[v4,01/16] drm: exynos/dp: fix code style
diff mbox

Message ID 1441086399-24889-1-git-send-email-ykk@rock-chips.com
State New
Headers show

Commit Message

Yakir Yang Sept. 1, 2015, 5:46 a.m. UTC
After run "checkpatch.pl -f --subjective" command, I see there
are lots of alignment problem in exynos_dp driver, so let just
fix them.

- Take Romain suggest, rebase on linux-next branch

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
---
Changes in v4: None
Changes in v3: None
Changes in v2:
- Take Joe Preches advise, improved commit message more readable, and
  avoid using some uncommon style like bellow:
  -  retval = exynos_dp_read_bytes_from_i2c(...
				...)
  +  retval =
  +  exynos_dp_read_bytes_from_i2c(......);

 drivers/gpu/drm/exynos/exynos_dp_core.c | 226 ++++++++++++++++----------------
 drivers/gpu/drm/exynos/exynos_dp_core.h |  54 ++++----
 drivers/gpu/drm/exynos/exynos_dp_reg.c  | 106 +++++++--------
 3 files changed, 188 insertions(+), 198 deletions(-)

Comments

Krzysztof Kozlowski Sept. 3, 2015, 12:21 a.m. UTC | #1
On 01.09.2015 14:46, Yakir Yang wrote:
> After run "checkpatch.pl -f --subjective" command, I see there
> are lots of alignment problem in exynos_dp driver, so let just
> fix them.

Hi,

Warnings from checkpatch are not a reason for a commit. Reason for a
commit could be for example an unreadable code, violation of
coding-style leading to decrease in code maintainability or just
improving the code readability so it will be easier to review and
maintain it.

You do not make commits because some tool tells you that. We do not
listen to machines :) ... If that would be the case, the commit could be
made automatically, without human interaction. Such automated commit
could be even easily tested by the machine by comparing object files.

Especially that you enabled "subjective" rule. This is not a valid
motivation for a commit.

Please rephrase this to sensible reason and convince that change is
worth the effort.

> 
> - Take Romain suggest, rebase on linux-next branch

That comment seems unrelated to the commit. Please remove it.

> 
> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
> ---
> Changes in v4: None
> Changes in v3: None
> Changes in v2:
> - Take Joe Preches advise, improved commit message more readable, and
>   avoid using some uncommon style like bellow:
>   -  retval = exynos_dp_read_bytes_from_i2c(...
> 				...)
>   +  retval =
>   +  exynos_dp_read_bytes_from_i2c(......);
> 
>  drivers/gpu/drm/exynos/exynos_dp_core.c | 226 ++++++++++++++++----------------
>  drivers/gpu/drm/exynos/exynos_dp_core.h |  54 ++++----
>  drivers/gpu/drm/exynos/exynos_dp_reg.c  | 106 +++++++--------
>  3 files changed, 188 insertions(+), 198 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
> index d66ade0..266f7f7 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
> @@ -115,8 +115,8 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>  
>  	/* Read Extension Flag, Number of 128-byte EDID extension blocks */
>  	retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
> -				EDID_EXTENSION_FLAG,
> -				&extend_block);
> +					      EDID_EXTENSION_FLAG,
> +					      &extend_block);
>  	if (retval)
>  		return retval;
>  
> @@ -124,10 +124,11 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>  		dev_dbg(dp->dev, "EDID data includes a single extension!\n");
>  
>  		/* Read EDID data */
> -		retval = exynos_dp_read_bytes_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
> -						EDID_HEADER_PATTERN,
> -						EDID_BLOCK_LENGTH,
> -						&edid[EDID_HEADER_PATTERN]);
> +		retval = exynos_dp_read_bytes_from_i2c(
> +					dp, I2C_EDID_DEVICE_ADDR,
> +					EDID_HEADER_PATTERN,
> +					EDID_BLOCK_LENGTH,
> +					&edid[EDID_HEADER_PATTERN]);
>  		if (retval != 0) {
>  			dev_err(dp->dev, "EDID Read failed!\n");
>  			return -EIO;
> @@ -139,11 +140,11 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>  		}
>  
>  		/* Read additional EDID data */
> -		retval = exynos_dp_read_bytes_from_i2c(dp,
> -				I2C_EDID_DEVICE_ADDR,
> -				EDID_BLOCK_LENGTH,
> -				EDID_BLOCK_LENGTH,
> -				&edid[EDID_BLOCK_LENGTH]);
> +		retval = exynos_dp_read_bytes_from_i2c(
> +					dp, I2C_EDID_DEVICE_ADDR,
> +					EDID_BLOCK_LENGTH,
> +					EDID_BLOCK_LENGTH,
> +					&edid[EDID_BLOCK_LENGTH]);
>  		if (retval != 0) {
>  			dev_err(dp->dev, "EDID Read failed!\n");
>  			return -EIO;
> @@ -155,24 +156,22 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>  		}
>  
>  		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
> -					&test_vector);
> +					      &test_vector);
>  		if (test_vector & DP_TEST_LINK_EDID_READ) {
> -			exynos_dp_write_byte_to_dpcd(dp,
> -				DP_TEST_EDID_CHECKSUM,
> +			exynos_dp_write_byte_to_dpcd(
> +				dp, DP_TEST_EDID_CHECKSUM,
>  				edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
> -			exynos_dp_write_byte_to_dpcd(dp,
> -				DP_TEST_RESPONSE,
> +			exynos_dp_write_byte_to_dpcd(
> +				dp, DP_TEST_RESPONSE,
>  				DP_TEST_EDID_CHECKSUM_WRITE);

To me, missing argument after opening parenthesis, looks worse. I would
prefer:

			exynos_dp_write_byte_to_dpcd(dp,

Why you moved the 'dp' argument to new line?

>  		}
>  	} else {
>  		dev_info(dp->dev, "EDID data does not include any extensions.\n");
>  
>  		/* Read EDID data */
> -		retval = exynos_dp_read_bytes_from_i2c(dp,
> -				I2C_EDID_DEVICE_ADDR,
> -				EDID_HEADER_PATTERN,
> -				EDID_BLOCK_LENGTH,
> -				&edid[EDID_HEADER_PATTERN]);
> +		retval = exynos_dp_read_bytes_from_i2c(
> +				dp, I2C_EDID_DEVICE_ADDR, EDID_HEADER_PATTERN,
> +				EDID_BLOCK_LENGTH, &edid[EDID_HEADER_PATTERN]);

ditto

>  		if (retval != 0) {
>  			dev_err(dp->dev, "EDID Read failed!\n");
>  			return -EIO;
> @@ -183,16 +182,15 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>  			return -EIO;
>  		}
>  
> -		exynos_dp_read_byte_from_dpcd(dp,
> -			DP_TEST_REQUEST,
> -			&test_vector);
> +		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
> +					      &test_vector);
>  		if (test_vector & DP_TEST_LINK_EDID_READ) {
> -			exynos_dp_write_byte_to_dpcd(dp,
> -				DP_TEST_EDID_CHECKSUM,
> -				edid[EDID_CHECKSUM]);
> -			exynos_dp_write_byte_to_dpcd(dp,
> -				DP_TEST_RESPONSE,
> -				DP_TEST_EDID_CHECKSUM_WRITE);
> +			exynos_dp_write_byte_to_dpcd(
> +					dp, DP_TEST_EDID_CHECKSUM,
> +					edid[EDID_CHECKSUM]);
> +			exynos_dp_write_byte_to_dpcd(
> +					dp, DP_TEST_RESPONSE,
> +					DP_TEST_EDID_CHECKSUM_WRITE);

ditto

>  		}
>  	}
>  
> @@ -207,8 +205,7 @@ static int exynos_dp_handle_edid(struct exynos_dp_device *dp)
>  	int retval;
>  
>  	/* Read DPCD DP_DPCD_REV~RECEIVE_PORT1_CAP_1 */
> -	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV,
> -				12, buf);
> +	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV, 12, buf);
>  	if (retval)
>  		return retval;
>  
> @@ -223,7 +220,7 @@ static int exynos_dp_handle_edid(struct exynos_dp_device *dp)
>  }
>  
>  static void exynos_dp_enable_rx_to_enhanced_mode(struct exynos_dp_device *dp,
> -						bool enable)
> +						 bool enable)
>  {
>  	u8 data;
>  
> @@ -231,11 +228,11 @@ static void exynos_dp_enable_rx_to_enhanced_mode(struct exynos_dp_device *dp,
>  
>  	if (enable)
>  		exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
> -			DP_LANE_COUNT_ENHANCED_FRAME_EN |
> -			DPCD_LANE_COUNT_SET(data));
> +					     DP_LANE_COUNT_ENHANCED_FRAME_EN |
> +					     DPCD_LANE_COUNT_SET(data));
>  	else
>  		exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
> -			DPCD_LANE_COUNT_SET(data));
> +					     DPCD_LANE_COUNT_SET(data));
>  }
>  
>  static int exynos_dp_is_enhanced_mode_available(struct exynos_dp_device *dp)
> @@ -262,13 +259,12 @@ static void exynos_dp_training_pattern_dis(struct exynos_dp_device *dp)
>  {
>  	exynos_dp_set_training_pattern(dp, DP_NONE);
>  
> -	exynos_dp_write_byte_to_dpcd(dp,
> -		DP_TRAINING_PATTERN_SET,
> -		DP_TRAINING_PATTERN_DISABLE);
> +	exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
> +				     DP_TRAINING_PATTERN_DISABLE);
>  }
>  
>  static void exynos_dp_set_lane_lane_pre_emphasis(struct exynos_dp_device *dp,
> -					int pre_emphasis, int lane)
> +						 int pre_emphasis, int lane)
>  {
>  	switch (lane) {
>  	case 0:
> @@ -308,15 +304,14 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp)
>  	/* Setup RX configuration */
>  	buf[0] = dp->link_train.link_rate;
>  	buf[1] = dp->link_train.lane_count;
> -	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET,
> -				2, buf);
> +	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET, 2, buf);
>  	if (retval)
>  		return retval;
>  
>  	/* Set TX pre-emphasis to minimum */
>  	for (lane = 0; lane < lane_count; lane++)
> -		exynos_dp_set_lane_lane_pre_emphasis(dp,
> -			PRE_EMPHASIS_LEVEL_0, lane);
> +		exynos_dp_set_lane_lane_pre_emphasis(dp, PRE_EMPHASIS_LEVEL_0,
> +						     lane);
>  
>  	/* Wait for PLL lock */
>  	pll_tries = 0;
> @@ -334,9 +329,9 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp)
>  	exynos_dp_set_training_pattern(dp, TRAINING_PTN1);
>  
>  	/* Set RX training pattern */
> -	retval = exynos_dp_write_byte_to_dpcd(dp,
> -			DP_TRAINING_PATTERN_SET,
> -			DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_1);
> +	retval = exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
> +					      DP_LINK_SCRAMBLING_DISABLE |
> +					      DP_TRAINING_PATTERN_1);
>  	if (retval)
>  		return retval;
>  
> @@ -345,7 +340,7 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp)
>  			    DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
>  
>  	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
> -			lane_count, buf);
> +					       lane_count, buf);
>  
>  	return retval;
>  }
> @@ -353,7 +348,7 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp)
>  static unsigned char exynos_dp_get_lane_status(u8 link_status[2], int lane)
>  {
>  	int shift = (lane & 1) * 4;
> -	u8 link_value = link_status[lane>>1];
> +	u8 link_value = link_status[lane >> 1];
>  
>  	return (link_value >> shift) & 0xf;
>  }
> @@ -372,7 +367,7 @@ static int exynos_dp_clock_recovery_ok(u8 link_status[2], int lane_count)
>  }
>  
>  static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
> -				int lane_count)
> +				   int lane_count)
>  {
>  	int lane;
>  	u8 lane_status;
> @@ -391,10 +386,10 @@ static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
>  }
>  
>  static unsigned char exynos_dp_get_adjust_request_voltage(u8 adjust_request[2],
> -							int lane)
> +							  int lane)
>  {
>  	int shift = (lane & 1) * 4;
> -	u8 link_value = adjust_request[lane>>1];
> +	u8 link_value = adjust_request[lane >> 1];
>  
>  	return (link_value >> shift) & 0x3;
>  }
> @@ -404,13 +399,13 @@ static unsigned char exynos_dp_get_adjust_request_pre_emphasis(
>  					int lane)
>  {
>  	int shift = (lane & 1) * 4;
> -	u8 link_value = adjust_request[lane>>1];
> +	u8 link_value = adjust_request[lane >> 1];
>  
>  	return ((link_value >> shift) & 0xc) >> 2;
>  }
>  
>  static void exynos_dp_set_lane_link_training(struct exynos_dp_device *dp,
> -					u8 training_lane_set, int lane)
> +					     u8 training_lane_set, int lane)
>  {
>  	switch (lane) {
>  	case 0:
> @@ -430,9 +425,8 @@ static void exynos_dp_set_lane_link_training(struct exynos_dp_device *dp,
>  	}
>  }
>  
> -static unsigned int exynos_dp_get_lane_link_training(
> -				struct exynos_dp_device *dp,
> -				int lane)
> +static unsigned int
> +exynos_dp_get_lane_link_training(struct exynos_dp_device *dp, int lane)
>  {
>  	u32 reg;
>  
> @@ -466,7 +460,7 @@ static void exynos_dp_reduce_link_rate(struct exynos_dp_device *dp)
>  }
>  
>  static void exynos_dp_get_adjust_training_lane(struct exynos_dp_device *dp,
> -					u8 adjust_request[2])
> +					       u8 adjust_request[2])
>  {
>  	int lane, lane_count;
>  	u8 voltage_swing, pre_emphasis, training_lane;
> @@ -499,13 +493,13 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
>  
>  	lane_count = dp->link_train.lane_count;
>  
> -	retval =  exynos_dp_read_bytes_from_dpcd(dp,
> -			DP_LANE0_1_STATUS, 2, link_status);
> +	retval =  exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
> +						 2, link_status);
>  	if (retval)
>  		return retval;
>  
> -	retval =  exynos_dp_read_bytes_from_dpcd(dp,
> -			DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
> +	retval =  exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1,
> +						 2, adjust_request);
>  	if (retval)
>  		return retval;
>  
> @@ -513,8 +507,8 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
>  		/* set training pattern 2 for EQ */
>  		exynos_dp_set_training_pattern(dp, TRAINING_PTN2);
>  
> -		retval = exynos_dp_write_byte_to_dpcd(dp,
> -				DP_TRAINING_PATTERN_SET,
> +		retval = exynos_dp_write_byte_to_dpcd(
> +				dp, DP_TRAINING_PATTERN_SET,
>  				DP_LINK_SCRAMBLING_DISABLE |
>  				DP_TRAINING_PATTERN_2);

ditto

>  		if (retval)
> @@ -552,11 +546,11 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
>  	exynos_dp_get_adjust_training_lane(dp, adjust_request);
>  
>  	for (lane = 0; lane < lane_count; lane++)
> -		exynos_dp_set_lane_link_training(dp,
> -			dp->link_train.training_lane[lane], lane);
> +		exynos_dp_set_lane_link_training(
> +				dp, dp->link_train.training_lane[lane], lane);
>  
> -	retval = exynos_dp_write_bytes_to_dpcd(dp,
> -			DP_TRAINING_LANE0_SET, lane_count,
> +	retval = exynos_dp_write_bytes_to_dpcd(
> +			dp, DP_TRAINING_LANE0_SET, lane_count,
>  			dp->link_train.training_lane);

ditto

>  	if (retval)
>  		return retval;
> @@ -574,8 +568,8 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
>  
>  	lane_count = dp->link_train.lane_count;
>  
> -	retval = exynos_dp_read_bytes_from_dpcd(dp,
> -			DP_LANE0_1_STATUS, 2, link_status);
> +	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
> +						2, link_status);
>  	if (retval)
>  		return retval;
>  
> @@ -584,13 +578,13 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
>  		return -EIO;
>  	}
>  
> -	retval = exynos_dp_read_bytes_from_dpcd(dp,
> -			DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
> +	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1,
> +						2, adjust_request);
>  	if (retval)
>  		return retval;
>  
> -	retval = exynos_dp_read_byte_from_dpcd(dp,
> -			DP_LANE_ALIGN_STATUS_UPDATED, &link_align);
> +	retval = exynos_dp_read_byte_from_dpcd(dp, DP_LANE_ALIGN_STATUS_UPDATED,
> +					       &link_align);
>  	if (retval)
>  		return retval;
>  
> @@ -629,17 +623,18 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
>  	}
>  
>  	for (lane = 0; lane < lane_count; lane++)
> -		exynos_dp_set_lane_link_training(dp,
> -			dp->link_train.training_lane[lane], lane);
> +		exynos_dp_set_lane_link_training(
> +				dp, dp->link_train.training_lane[lane], lane);

ditto

>  
>  	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
> -			lane_count, dp->link_train.training_lane);
> +					       lane_count,
> +					       dp->link_train.training_lane);
>  
>  	return retval;
>  }
>  
>  static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp,
> -					u8 *bandwidth)
> +					   u8 *bandwidth)
>  {
>  	u8 data;
>  
> @@ -652,7 +647,7 @@ static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp,
>  }
>  
>  static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp,
> -					u8 *lane_count)
> +					    u8 *lane_count)
>  {
>  	u8 data;
>  
> @@ -665,8 +660,8 @@ static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp,
>  }
>  
>  static void exynos_dp_init_training(struct exynos_dp_device *dp,
> -			enum link_lane_count_type max_lane,
> -			enum link_rate_type max_rate)
> +				    enum link_lane_count_type max_lane,
> +				    enum link_rate_type max_rate)
>  {
>  	/*
>  	 * MACRO_RST must be applied after the PLL_LOCK to avoid
> @@ -679,7 +674,7 @@ static void exynos_dp_init_training(struct exynos_dp_device *dp,
>  	exynos_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count);
>  
>  	if ((dp->link_train.link_rate != LINK_RATE_1_62GBPS) &&
> -	   (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) {
> +	    (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) {
>  		dev_err(dp->dev, "Rx Max Link Rate is abnormal :%x !\n",
>  			dp->link_train.link_rate);
>  		dp->link_train.link_rate = LINK_RATE_1_62GBPS;
> @@ -739,8 +734,7 @@ static int exynos_dp_sw_link_training(struct exynos_dp_device *dp)
>  }
>  
>  static int exynos_dp_set_link_train(struct exynos_dp_device *dp,
> -				u32 count,
> -				u32 bwtype)
> +				    u32 count, u32 bwtype)
>  {
>  	int i;
>  	int retval;
> @@ -828,21 +822,19 @@ static void exynos_dp_enable_scramble(struct exynos_dp_device *dp, bool enable)
>  	if (enable) {
>  		exynos_dp_enable_scrambling(dp);
>  
> -		exynos_dp_read_byte_from_dpcd(dp,
> -			DP_TRAINING_PATTERN_SET,
> -			&data);
> -		exynos_dp_write_byte_to_dpcd(dp,
> -			DP_TRAINING_PATTERN_SET,
> -			(u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
> +		exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
> +					      &data);
> +		exynos_dp_write_byte_to_dpcd(
> +				dp, DP_TRAINING_PATTERN_SET,
> +				(u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));

ditto

>  	} else {
>  		exynos_dp_disable_scrambling(dp);
>  
> -		exynos_dp_read_byte_from_dpcd(dp,
> -			DP_TRAINING_PATTERN_SET,
> -			&data);
> -		exynos_dp_write_byte_to_dpcd(dp,
> -			DP_TRAINING_PATTERN_SET,
> -			(u8)(data | DP_LINK_SCRAMBLING_DISABLE));
> +		exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
> +					      &data);
> +		exynos_dp_write_byte_to_dpcd(
> +				dp, DP_TRAINING_PATTERN_SET,
> +				(u8)(data | DP_LINK_SCRAMBLING_DISABLE));

ditto

>  	}
>  }
>  
> @@ -913,7 +905,7 @@ static void exynos_dp_commit(struct drm_encoder *encoder)
>  	}
>  
>  	ret = exynos_dp_set_link_train(dp, dp->video_info->lane_count,
> -					dp->video_info->link_rate);
> +				       dp->video_info->link_rate);
>  	if (ret) {
>  		dev_err(dp->dev, "unable to do link train\n");
>  		return;
> @@ -941,8 +933,8 @@ static void exynos_dp_commit(struct drm_encoder *encoder)
>  	exynos_dp_start_video(dp);
>  }
>  
> -static enum drm_connector_status exynos_dp_detect(
> -				struct drm_connector *connector, bool force)
> +static enum drm_connector_status
> +exynos_dp_detect(struct drm_connector *connector, bool force)
>  {
>  	return connector_status_connected;
>  }
> @@ -990,8 +982,8 @@ static int exynos_dp_get_modes(struct drm_connector *connector)
>  	return 1;
>  }
>  
> -static struct drm_encoder *exynos_dp_best_encoder(
> -			struct drm_connector *connector)
> +static struct drm_encoder *
> +exynos_dp_best_encoder(struct drm_connector *connector)
>  {
>  	struct exynos_dp_device *dp = ctx_from_connector(connector);
>  
> @@ -1005,7 +997,7 @@ static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
>  
>  /* returns the number of bridges attached */
>  static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
> -		struct drm_encoder *encoder)
> +					struct drm_encoder *encoder)
>  {
>  	int ret;
>  
> @@ -1036,7 +1028,8 @@ static int exynos_dp_create_connector(struct drm_encoder *encoder)
>  	connector->polled = DRM_CONNECTOR_POLL_HPD;
>  
>  	ret = drm_connector_init(dp->drm_dev, connector,
> -			&exynos_dp_connector_funcs, DRM_MODE_CONNECTOR_eDP);
> +				 &exynos_dp_connector_funcs,
> +				 DRM_MODE_CONNECTOR_eDP);
>  	if (ret) {
>  		DRM_ERROR("Failed to initialize connector with drm\n");
>  		return ret;
> @@ -1139,8 +1132,8 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
>  	struct device_node *dp_node = dev->of_node;
>  	struct video_info *dp_video_config;
>  
> -	dp_video_config = devm_kzalloc(dev,
> -				sizeof(*dp_video_config), GFP_KERNEL);
> +	dp_video_config = devm_kzalloc(dev, sizeof(*dp_video_config),
> +				       GFP_KERNEL);
>  	if (!dp_video_config)
>  		return ERR_PTR(-ENOMEM);
>  
> @@ -1154,37 +1147,37 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
>  		of_property_read_bool(dp_node, "interlaced");
>  
>  	if (of_property_read_u32(dp_node, "samsung,color-space",
> -				&dp_video_config->color_space)) {
> +				 &dp_video_config->color_space)) {
>  		dev_err(dev, "failed to get color-space\n");
>  		return ERR_PTR(-EINVAL);
>  	}
>  
>  	if (of_property_read_u32(dp_node, "samsung,dynamic-range",
> -				&dp_video_config->dynamic_range)) {
> +				 &dp_video_config->dynamic_range)) {
>  		dev_err(dev, "failed to get dynamic-range\n");
>  		return ERR_PTR(-EINVAL);
>  	}
>  
>  	if (of_property_read_u32(dp_node, "samsung,ycbcr-coeff",
> -				&dp_video_config->ycbcr_coeff)) {
> +				 &dp_video_config->ycbcr_coeff)) {
>  		dev_err(dev, "failed to get ycbcr-coeff\n");
>  		return ERR_PTR(-EINVAL);
>  	}
>  
>  	if (of_property_read_u32(dp_node, "samsung,color-depth",
> -				&dp_video_config->color_depth)) {
> +				 &dp_video_config->color_depth)) {
>  		dev_err(dev, "failed to get color-depth\n");
>  		return ERR_PTR(-EINVAL);
>  	}
>  
>  	if (of_property_read_u32(dp_node, "samsung,link-rate",
> -				&dp_video_config->link_rate)) {
> +				 &dp_video_config->link_rate)) {
>  		dev_err(dev, "failed to get link-rate\n");
>  		return ERR_PTR(-EINVAL);
>  	}
>  
>  	if (of_property_read_u32(dp_node, "samsung,lane-count",
> -				&dp_video_config->lane_count)) {
> +				 &dp_video_config->lane_count)) {
>  		dev_err(dev, "failed to get lane-count\n");
>  		return ERR_PTR(-EINVAL);
>  	}
> @@ -1197,7 +1190,7 @@ static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
>  	int ret;
>  
>  	ret = of_get_videomode(dp->dev->of_node, &dp->priv.vm,
> -			OF_USE_NATIVE_MODE);
> +			       OF_USE_NATIVE_MODE);
>  	if (ret) {
>  		DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
>  		return ret;
> @@ -1294,7 +1287,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>  	exynos_dp_init_dp(dp);
>  
>  	ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler,
> -			irq_flags, "exynos-dp", dp);
> +			       irq_flags, "exynos-dp", dp);
>  	if (ret) {
>  		dev_err(&pdev->dev, "failed to request irq\n");
>  		return ret;
> @@ -1328,7 +1321,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>  }
>  
>  static void exynos_dp_unbind(struct device *dev, struct device *master,
> -				void *data)
> +			     void *data)
>  {
>  	struct exynos_dp_device *dp = dev_get_drvdata(dev);
>  
> @@ -1347,7 +1340,7 @@ static int exynos_dp_probe(struct platform_device *pdev)
>  	struct exynos_dp_device *dp;
>  
>  	dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
> -				GFP_KERNEL);
> +			  GFP_KERNEL);
>  	if (!dp)
>  		return -ENOMEM;
>  
> @@ -1369,8 +1362,9 @@ static int exynos_dp_probe(struct platform_device *pdev)
>  			of_node_put(bridge_node);
>  			if (!dp->bridge)
>  				return -EPROBE_DEFER;
> -		} else
> +		} else {
>  			return -EPROBE_DEFER;
> +		}
>  	}
>  
>  	return component_add(&pdev->dev, &exynos_dp_ops);
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
> index e413b6f..71f2b86 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.h
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.h
> @@ -179,8 +179,8 @@ void exynos_dp_config_interrupt(struct exynos_dp_device *dp);
>  enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp);
>  void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable);
>  void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
> -				enum analog_power_block block,
> -				bool enable);
> +				     enum analog_power_block block,
> +				     bool enable);
>  void exynos_dp_init_analog_func(struct exynos_dp_device *dp);
>  void exynos_dp_init_hpd(struct exynos_dp_device *dp);
>  enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp);
> @@ -191,50 +191,50 @@ int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp);
>  void exynos_dp_enable_sw_function(struct exynos_dp_device *dp);
>  int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp);
>  int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
> -				unsigned int reg_addr,
> -				unsigned char data);
> +				 unsigned int reg_addr,
> +				 unsigned char data);
>  int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
> -				unsigned int reg_addr,
> -				unsigned char *data);
> +				  unsigned int reg_addr,
> +				  unsigned char *data);
>  int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
> -				unsigned int reg_addr,
> -				unsigned int count,
> -				unsigned char data[]);
> +				  unsigned int reg_addr,
> +				  unsigned int count,
> +				  unsigned char data[]);
>  int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
> -				unsigned int reg_addr,
> -				unsigned int count,
> -				unsigned char data[]);
> +				   unsigned int reg_addr,
> +				   unsigned int count,
> +				   unsigned char data[]);
>  int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
>  				unsigned int device_addr,
>  				unsigned int reg_addr);
>  int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
> -				unsigned int device_addr,
> -				unsigned int reg_addr,
> -				unsigned int *data);
> +				 unsigned int device_addr,
> +				 unsigned int reg_addr,
> +				 unsigned int *data);
>  int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
> -				unsigned int device_addr,
> -				unsigned int reg_addr,
> -				unsigned int count,
> -				unsigned char edid[]);
> +				  unsigned int device_addr,
> +				  unsigned int reg_addr,
> +				  unsigned int count,
> +				  unsigned char edid[]);
>  void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype);
>  void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype);
>  void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count);
>  void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count);
>  void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable);
>  void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
> -				 enum pattern_set pattern);
> +				    enum pattern_set pattern);
>  void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level);
>  void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level);
>  void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level);
>  void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level);
>  void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
> -				u32 training_lane);
> +				       u32 training_lane);
>  void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
> -				u32 training_lane);
> +				       u32 training_lane);
>  void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
> -				u32 training_lane);
> +				       u32 training_lane);
>  void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
> -				u32 training_lane);
> +				       u32 training_lane);
>  u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp);
>  u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp);
>  u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp);
> @@ -245,9 +245,9 @@ void exynos_dp_init_video(struct exynos_dp_device *dp);
>  void exynos_dp_set_video_color_format(struct exynos_dp_device *dp);
>  int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp);
>  void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
> -			enum clock_recovery_m_value_type type,
> -			u32 m_value,
> -			u32 n_value);
> +			       enum clock_recovery_m_value_type type,
> +			       u32 m_value,
> +			       u32 n_value);
>  void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type);
>  void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable);
>  void exynos_dp_start_video(struct exynos_dp_device *dp);
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_reg.c b/drivers/gpu/drm/exynos/exynos_dp_reg.c
> index c1f87a2..5aff19a 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_reg.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp_reg.c
> @@ -202,8 +202,8 @@ void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable)
>  }
>  
>  void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
> -				enum analog_power_block block,
> -				bool enable)
> +				     enum analog_power_block block,
> +				     bool enable)
>  {
>  	u32 reg;
>  
> @@ -399,8 +399,8 @@ void exynos_dp_init_aux(struct exynos_dp_device *dp)
>  	exynos_dp_reset_aux(dp);
>  
>  	/* Disable AUX transaction H/W retry */
> -	reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0)|
> -		AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
> +	reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0) |
> +	      AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
>  	writel(reg, dp->reg_base + EXYNOS_DP_AUX_HW_RETRY_CTL);
>  
>  	/* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
> @@ -483,8 +483,8 @@ int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp)
>  }
>  
>  int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
> -				unsigned int reg_addr,
> -				unsigned char data)
> +				 unsigned int reg_addr,
> +				 unsigned char data)
>  {
>  	u32 reg;
>  	int i;
> @@ -519,17 +519,16 @@ int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
>  		retval = exynos_dp_start_aux_transaction(dp);
>  		if (retval == 0)
>  			break;
> -		else
> -			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
> -				__func__);
> +
> +		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
>  	}
>  
>  	return retval;
>  }
>  
>  int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
> -				unsigned int reg_addr,
> -				unsigned char *data)
> +				  unsigned int reg_addr,
> +				  unsigned char *data)
>  {
>  	u32 reg;
>  	int i;
> @@ -560,9 +559,8 @@ int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
>  		retval = exynos_dp_start_aux_transaction(dp);
>  		if (retval == 0)
>  			break;
> -		else
> -			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
> -				__func__);
> +
> +		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
>  	}
>  
>  	/* Read data buffer */
> @@ -573,9 +571,9 @@ int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
>  }
>  
>  int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
> -				unsigned int reg_addr,
> -				unsigned int count,
> -				unsigned char data[])
> +				  unsigned int reg_addr,
> +				  unsigned int count,
> +				  unsigned char data[])
>  {
>  	u32 reg;
>  	unsigned int start_offset;
> @@ -625,9 +623,9 @@ int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
>  			retval = exynos_dp_start_aux_transaction(dp);
>  			if (retval == 0)
>  				break;
> -			else
> -				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
> -					__func__);
> +
> +			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
> +				__func__);
>  		}
>  
>  		start_offset += cur_data_count;
> @@ -637,9 +635,9 @@ int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
>  }
>  
>  int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
> -				unsigned int reg_addr,
> -				unsigned int count,
> -				unsigned char data[])
> +				   unsigned int reg_addr,
> +				   unsigned int count,
> +				   unsigned char data[])
>  {
>  	u32 reg;
>  	unsigned int start_offset;
> @@ -683,9 +681,9 @@ int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
>  			retval = exynos_dp_start_aux_transaction(dp);
>  			if (retval == 0)
>  				break;
> -			else
> -				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
> -					__func__);
> +
> +			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
> +				__func__);
>  		}
>  
>  		for (cur_data_idx = 0; cur_data_idx < cur_data_count;
> @@ -736,9 +734,9 @@ int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
>  }
>  
>  int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
> -				unsigned int device_addr,
> -				unsigned int reg_addr,
> -				unsigned int *data)
> +				 unsigned int device_addr,
> +				 unsigned int reg_addr,
> +				 unsigned int *data)
>  {
>  	u32 reg;
>  	int i;
> @@ -767,9 +765,8 @@ int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
>  		retval = exynos_dp_start_aux_transaction(dp);
>  		if (retval == 0)
>  			break;
> -		else
> -			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
> -				__func__);
> +
> +		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
>  	}
>  
>  	/* Read data */
> @@ -780,10 +777,10 @@ int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
>  }
>  
>  int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
> -				unsigned int device_addr,
> -				unsigned int reg_addr,
> -				unsigned int count,
> -				unsigned char edid[])
> +				  unsigned int device_addr,
> +				  unsigned int reg_addr,
> +				  unsigned int count,
> +				  unsigned char edid[])
>  {
>  	u32 reg;
>  	unsigned int i, j;
> @@ -807,8 +804,8 @@ int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
>  			 * request without sending address
>  			 */
>  			if (!defer)
> -				retval = exynos_dp_select_i2c_device(dp,
> -						device_addr, reg_addr + i);
> +				retval = exynos_dp_select_i2c_device(
> +						dp, device_addr, reg_addr + i);

ditto

Best regards,
Krzysztof

>  			else
>  				defer = 0;
>  
> @@ -819,24 +816,23 @@ int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
>  				 * If Bit 3 is 0, I2C transaction.
>  				 */
>  				reg = AUX_LENGTH(16) |
> -					AUX_TX_COMM_I2C_TRANSACTION |
> -					AUX_TX_COMM_READ;
> +				      AUX_TX_COMM_I2C_TRANSACTION |
> +				      AUX_TX_COMM_READ;
>  				writel(reg, dp->reg_base +
> -					EXYNOS_DP_AUX_CH_CTL_1);
> +				       EXYNOS_DP_AUX_CH_CTL_1);
>  
>  				/* Start AUX transaction */
>  				retval = exynos_dp_start_aux_transaction(dp);
>  				if (retval == 0)
>  					break;
> -				else
> -					dev_dbg(dp->dev,
> -						"%s: Aux Transaction fail!\n",
> -						__func__);
> +
> +				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
> +					__func__);
>  			}
>  			/* Check if Rx sends defer */
>  			reg = readl(dp->reg_base + EXYNOS_DP_AUX_RX_COMM);
>  			if (reg == AUX_RX_COMM_AUX_DEFER ||
> -				reg == AUX_RX_COMM_I2C_DEFER) {
> +			    reg == AUX_RX_COMM_I2C_DEFER) {
>  				dev_err(dp->dev, "Defer: %d\n\n", reg);
>  				defer = 1;
>  			}
> @@ -901,7 +897,7 @@ void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable)
>  }
>  
>  void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
> -				 enum pattern_set pattern)
> +				    enum pattern_set pattern)
>  {
>  	u32 reg;
>  
> @@ -974,7 +970,7 @@ void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level)
>  }
>  
>  void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
> -					u32 training_lane)
> +				       u32 training_lane)
>  {
>  	u32 reg;
>  
> @@ -983,7 +979,7 @@ void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
>  }
>  
>  void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
> -					u32 training_lane)
> +				       u32 training_lane)
>  {
>  	u32 reg;
>  
> @@ -992,7 +988,7 @@ void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
>  }
>  
>  void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
> -					u32 training_lane)
> +				       u32 training_lane)
>  {
>  	u32 reg;
>  
> @@ -1001,7 +997,7 @@ void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
>  }
>  
>  void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
> -					u32 training_lane)
> +				       u32 training_lane)
>  {
>  	u32 reg;
>  
> @@ -1125,9 +1121,9 @@ int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp)
>  }
>  
>  void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
> -		enum clock_recovery_m_value_type type,
> -		u32 m_value,
> -		u32 n_value)
> +			       enum clock_recovery_m_value_type type,
> +			       u32 m_value,
> +			       u32 n_value)
>  {
>  	u32 reg;
>  
> @@ -1221,7 +1217,7 @@ void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp)
>  	u32 reg;
>  
>  	reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_1);
> -	reg &= ~(MASTER_VID_FUNC_EN_N|SLAVE_VID_FUNC_EN_N);
> +	reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
>  	reg |= MASTER_VID_FUNC_EN_N;
>  	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1);
>  
>
Yakir Yang Sept. 3, 2015, 5:04 a.m. UTC | #2
Hi Krzysztof,

? 09/03/2015 08:21 AM, Krzysztof Kozlowski ??:
> On 01.09.2015 14:46, Yakir Yang wrote:
>> After run "checkpatch.pl -f --subjective" command, I see there
>> are lots of alignment problem in exynos_dp driver, so let just
>> fix them.
> Hi,
>
> Warnings from checkpatch are not a reason for a commit. Reason for a
> commit could be for example an unreadable code, violation of
> coding-style leading to decrease in code maintainability or just
> improving the code readability so it will be easier to review and
> maintain it.
>
> You do not make commits because some tool tells you that. We do not
> listen to machines :) ... If that would be the case, the commit could be
> made automatically, without human interaction. Such automated commit
> could be even easily tested by the machine by comparing object files.
>
> Especially that you enabled "subjective" rule. This is not a valid
> motivation for a commit.
>
> Please rephrase this to sensible reason and convince that change is
> worth the effort.

Oh, nice, thanks for your remind. I would rephrase the commit.

>> - Take Romain suggest, rebase on linux-next branch
> That comment seems unrelated to the commit. Please remove it.

Done,

>
>> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
>> ---
>> Changes in v4: None
>> Changes in v3: None
>> Changes in v2:
>> - Take Joe Preches advise, improved commit message more readable, and
>>    avoid using some uncommon style like bellow:
>>    -  retval = exynos_dp_read_bytes_from_i2c(...
>> 				...)
>>    +  retval =
>>    +  exynos_dp_read_bytes_from_i2c(......);
>>
>>   drivers/gpu/drm/exynos/exynos_dp_core.c | 226 ++++++++++++++++----------------
>>   drivers/gpu/drm/exynos/exynos_dp_core.h |  54 ++++----
>>   drivers/gpu/drm/exynos/exynos_dp_reg.c  | 106 +++++++--------
>>   3 files changed, 188 insertions(+), 198 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
>> index d66ade0..266f7f7 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
>> @@ -115,8 +115,8 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>>   
>>   	/* Read Extension Flag, Number of 128-byte EDID extension blocks */
>>   	retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>> -				EDID_EXTENSION_FLAG,
>> -				&extend_block);
>> +					      EDID_EXTENSION_FLAG,
>> +					      &extend_block);
>>   	if (retval)
>>   		return retval;
>>   
>> @@ -124,10 +124,11 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>>   		dev_dbg(dp->dev, "EDID data includes a single extension!\n");
>>   
>>   		/* Read EDID data */
>> -		retval = exynos_dp_read_bytes_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>> -						EDID_HEADER_PATTERN,
>> -						EDID_BLOCK_LENGTH,
>> -						&edid[EDID_HEADER_PATTERN]);
>> +		retval = exynos_dp_read_bytes_from_i2c(
>> +					dp, I2C_EDID_DEVICE_ADDR,
>> +					EDID_HEADER_PATTERN,
>> +					EDID_BLOCK_LENGTH,
>> +					&edid[EDID_HEADER_PATTERN]);
>>   		if (retval != 0) {
>>   			dev_err(dp->dev, "EDID Read failed!\n");
>>   			return -EIO;
>> @@ -139,11 +140,11 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>>   		}
>>   
>>   		/* Read additional EDID data */
>> -		retval = exynos_dp_read_bytes_from_i2c(dp,
>> -				I2C_EDID_DEVICE_ADDR,
>> -				EDID_BLOCK_LENGTH,
>> -				EDID_BLOCK_LENGTH,
>> -				&edid[EDID_BLOCK_LENGTH]);
>> +		retval = exynos_dp_read_bytes_from_i2c(
>> +					dp, I2C_EDID_DEVICE_ADDR,
>> +					EDID_BLOCK_LENGTH,
>> +					EDID_BLOCK_LENGTH,
>> +					&edid[EDID_BLOCK_LENGTH]);
>>   		if (retval != 0) {
>>   			dev_err(dp->dev, "EDID Read failed!\n");
>>   			return -EIO;
>> @@ -155,24 +156,22 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>>   		}
>>   
>>   		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
>> -					&test_vector);
>> +					      &test_vector);
>>   		if (test_vector & DP_TEST_LINK_EDID_READ) {
>> -			exynos_dp_write_byte_to_dpcd(dp,
>> -				DP_TEST_EDID_CHECKSUM,
>> +			exynos_dp_write_byte_to_dpcd(
>> +				dp, DP_TEST_EDID_CHECKSUM,
>>   				edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
>> -			exynos_dp_write_byte_to_dpcd(dp,
>> -				DP_TEST_RESPONSE,
>> +			exynos_dp_write_byte_to_dpcd(
>> +				dp, DP_TEST_RESPONSE,
>>   				DP_TEST_EDID_CHECKSUM_WRITE);
> To me, missing argument after opening parenthesis, looks worse. I would
> prefer:
>
> 			exynos_dp_write_byte_to_dpcd(dp,
>
> Why you moved the 'dp' argument to new line?

Hmm... Just like style tool indicate, no more warning after
that change.

For now, I would like to follow the original style, just improved
some obvious style problem.  :-)

>
>>   		}
>>   	} else {
>>   		dev_info(dp->dev, "EDID data does not include any extensions.\n");
>>   
>>   		/* Read EDID data */
>> -		retval = exynos_dp_read_bytes_from_i2c(dp,
>> -				I2C_EDID_DEVICE_ADDR,
>> -				EDID_HEADER_PATTERN,
>> -				EDID_BLOCK_LENGTH,
>> -				&edid[EDID_HEADER_PATTERN]);
>> +		retval = exynos_dp_read_bytes_from_i2c(
>> +				dp, I2C_EDID_DEVICE_ADDR, EDID_HEADER_PATTERN,
>> +				EDID_BLOCK_LENGTH, &edid[EDID_HEADER_PATTERN]);
> ditto

Done

>
>>   		if (retval != 0) {
>>   			dev_err(dp->dev, "EDID Read failed!\n");
>>   			return -EIO;
>> @@ -183,16 +182,15 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>>   			return -EIO;
>>   		}
>>   
>> -		exynos_dp_read_byte_from_dpcd(dp,
>> -			DP_TEST_REQUEST,
>> -			&test_vector);
>> +		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
>> +					      &test_vector);
>>   		if (test_vector & DP_TEST_LINK_EDID_READ) {
>> -			exynos_dp_write_byte_to_dpcd(dp,
>> -				DP_TEST_EDID_CHECKSUM,
>> -				edid[EDID_CHECKSUM]);
>> -			exynos_dp_write_byte_to_dpcd(dp,
>> -				DP_TEST_RESPONSE,
>> -				DP_TEST_EDID_CHECKSUM_WRITE);
>> +			exynos_dp_write_byte_to_dpcd(
>> +					dp, DP_TEST_EDID_CHECKSUM,
>> +					edid[EDID_CHECKSUM]);
>> +			exynos_dp_write_byte_to_dpcd(
>> +					dp, DP_TEST_RESPONSE,
>> +					DP_TEST_EDID_CHECKSUM_WRITE);
> ditto

Done

>
>>   		}
>>   	}
>>   
>> @@ -207,8 +205,7 @@ static int exynos_dp_handle_edid(struct exynos_dp_device *dp)
>>   	int retval;
>>   
>>   	/* Read DPCD DP_DPCD_REV~RECEIVE_PORT1_CAP_1 */
>> -	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV,
>> -				12, buf);
>> +	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV, 12, buf);
>>   	if (retval)
>>   		return retval;
>>   
>> @@ -223,7 +220,7 @@ static int exynos_dp_handle_edid(struct exynos_dp_device *dp)
>>   }
>>   
>>   static void exynos_dp_enable_rx_to_enhanced_mode(struct exynos_dp_device *dp,
>> -						bool enable)
>> +						 bool enable)
>>   {
>>   	u8 data;
>>   
>> @@ -231,11 +228,11 @@ static void exynos_dp_enable_rx_to_enhanced_mode(struct exynos_dp_device *dp,
>>   
>>   	if (enable)
>>   		exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
>> -			DP_LANE_COUNT_ENHANCED_FRAME_EN |
>> -			DPCD_LANE_COUNT_SET(data));
>> +					     DP_LANE_COUNT_ENHANCED_FRAME_EN |
>> +					     DPCD_LANE_COUNT_SET(data));
>>   	else
>>   		exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
>> -			DPCD_LANE_COUNT_SET(data));
>> +					     DPCD_LANE_COUNT_SET(data));
>>   }
>>   
>>   static int exynos_dp_is_enhanced_mode_available(struct exynos_dp_device *dp)
>> @@ -262,13 +259,12 @@ static void exynos_dp_training_pattern_dis(struct exynos_dp_device *dp)
>>   {
>>   	exynos_dp_set_training_pattern(dp, DP_NONE);
>>   
>> -	exynos_dp_write_byte_to_dpcd(dp,
>> -		DP_TRAINING_PATTERN_SET,
>> -		DP_TRAINING_PATTERN_DISABLE);
>> +	exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
>> +				     DP_TRAINING_PATTERN_DISABLE);
>>   }
>>   
>>   static void exynos_dp_set_lane_lane_pre_emphasis(struct exynos_dp_device *dp,
>> -					int pre_emphasis, int lane)
>> +						 int pre_emphasis, int lane)
>>   {
>>   	switch (lane) {
>>   	case 0:
>> @@ -308,15 +304,14 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp)
>>   	/* Setup RX configuration */
>>   	buf[0] = dp->link_train.link_rate;
>>   	buf[1] = dp->link_train.lane_count;
>> -	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET,
>> -				2, buf);
>> +	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET, 2, buf);
>>   	if (retval)
>>   		return retval;
>>   
>>   	/* Set TX pre-emphasis to minimum */
>>   	for (lane = 0; lane < lane_count; lane++)
>> -		exynos_dp_set_lane_lane_pre_emphasis(dp,
>> -			PRE_EMPHASIS_LEVEL_0, lane);
>> +		exynos_dp_set_lane_lane_pre_emphasis(dp, PRE_EMPHASIS_LEVEL_0,
>> +						     lane);
>>   
>>   	/* Wait for PLL lock */
>>   	pll_tries = 0;
>> @@ -334,9 +329,9 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp)
>>   	exynos_dp_set_training_pattern(dp, TRAINING_PTN1);
>>   
>>   	/* Set RX training pattern */
>> -	retval = exynos_dp_write_byte_to_dpcd(dp,
>> -			DP_TRAINING_PATTERN_SET,
>> -			DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_1);
>> +	retval = exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
>> +					      DP_LINK_SCRAMBLING_DISABLE |
>> +					      DP_TRAINING_PATTERN_1);
>>   	if (retval)
>>   		return retval;
>>   
>> @@ -345,7 +340,7 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp)
>>   			    DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
>>   
>>   	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
>> -			lane_count, buf);
>> +					       lane_count, buf);
>>   
>>   	return retval;
>>   }
>> @@ -353,7 +348,7 @@ static int exynos_dp_link_start(struct exynos_dp_device *dp)
>>   static unsigned char exynos_dp_get_lane_status(u8 link_status[2], int lane)
>>   {
>>   	int shift = (lane & 1) * 4;
>> -	u8 link_value = link_status[lane>>1];
>> +	u8 link_value = link_status[lane >> 1];
>>   
>>   	return (link_value >> shift) & 0xf;
>>   }
>> @@ -372,7 +367,7 @@ static int exynos_dp_clock_recovery_ok(u8 link_status[2], int lane_count)
>>   }
>>   
>>   static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
>> -				int lane_count)
>> +				   int lane_count)
>>   {
>>   	int lane;
>>   	u8 lane_status;
>> @@ -391,10 +386,10 @@ static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
>>   }
>>   
>>   static unsigned char exynos_dp_get_adjust_request_voltage(u8 adjust_request[2],
>> -							int lane)
>> +							  int lane)
>>   {
>>   	int shift = (lane & 1) * 4;
>> -	u8 link_value = adjust_request[lane>>1];
>> +	u8 link_value = adjust_request[lane >> 1];
>>   
>>   	return (link_value >> shift) & 0x3;
>>   }
>> @@ -404,13 +399,13 @@ static unsigned char exynos_dp_get_adjust_request_pre_emphasis(
>>   					int lane)
>>   {
>>   	int shift = (lane & 1) * 4;
>> -	u8 link_value = adjust_request[lane>>1];
>> +	u8 link_value = adjust_request[lane >> 1];
>>   
>>   	return ((link_value >> shift) & 0xc) >> 2;
>>   }
>>   
>>   static void exynos_dp_set_lane_link_training(struct exynos_dp_device *dp,
>> -					u8 training_lane_set, int lane)
>> +					     u8 training_lane_set, int lane)
>>   {
>>   	switch (lane) {
>>   	case 0:
>> @@ -430,9 +425,8 @@ static void exynos_dp_set_lane_link_training(struct exynos_dp_device *dp,
>>   	}
>>   }
>>   
>> -static unsigned int exynos_dp_get_lane_link_training(
>> -				struct exynos_dp_device *dp,
>> -				int lane)
>> +static unsigned int
>> +exynos_dp_get_lane_link_training(struct exynos_dp_device *dp, int lane)
>>   {
>>   	u32 reg;
>>   
>> @@ -466,7 +460,7 @@ static void exynos_dp_reduce_link_rate(struct exynos_dp_device *dp)
>>   }
>>   
>>   static void exynos_dp_get_adjust_training_lane(struct exynos_dp_device *dp,
>> -					u8 adjust_request[2])
>> +					       u8 adjust_request[2])
>>   {
>>   	int lane, lane_count;
>>   	u8 voltage_swing, pre_emphasis, training_lane;
>> @@ -499,13 +493,13 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
>>   
>>   	lane_count = dp->link_train.lane_count;
>>   
>> -	retval =  exynos_dp_read_bytes_from_dpcd(dp,
>> -			DP_LANE0_1_STATUS, 2, link_status);
>> +	retval =  exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
>> +						 2, link_status);
>>   	if (retval)
>>   		return retval;
>>   
>> -	retval =  exynos_dp_read_bytes_from_dpcd(dp,
>> -			DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
>> +	retval =  exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1,
>> +						 2, adjust_request);
>>   	if (retval)
>>   		return retval;
>>   
>> @@ -513,8 +507,8 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
>>   		/* set training pattern 2 for EQ */
>>   		exynos_dp_set_training_pattern(dp, TRAINING_PTN2);
>>   
>> -		retval = exynos_dp_write_byte_to_dpcd(dp,
>> -				DP_TRAINING_PATTERN_SET,
>> +		retval = exynos_dp_write_byte_to_dpcd(
>> +				dp, DP_TRAINING_PATTERN_SET,
>>   				DP_LINK_SCRAMBLING_DISABLE |
>>   				DP_TRAINING_PATTERN_2);
> ditto

Done

>
>>   		if (retval)
>> @@ -552,11 +546,11 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
>>   	exynos_dp_get_adjust_training_lane(dp, adjust_request);
>>   
>>   	for (lane = 0; lane < lane_count; lane++)
>> -		exynos_dp_set_lane_link_training(dp,
>> -			dp->link_train.training_lane[lane], lane);
>> +		exynos_dp_set_lane_link_training(
>> +				dp, dp->link_train.training_lane[lane], lane);
>>   
>> -	retval = exynos_dp_write_bytes_to_dpcd(dp,
>> -			DP_TRAINING_LANE0_SET, lane_count,
>> +	retval = exynos_dp_write_bytes_to_dpcd(
>> +			dp, DP_TRAINING_LANE0_SET, lane_count,
>>   			dp->link_train.training_lane);
> ditto

Done

>
>>   	if (retval)
>>   		return retval;
>> @@ -574,8 +568,8 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
>>   
>>   	lane_count = dp->link_train.lane_count;
>>   
>> -	retval = exynos_dp_read_bytes_from_dpcd(dp,
>> -			DP_LANE0_1_STATUS, 2, link_status);
>> +	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
>> +						2, link_status);
>>   	if (retval)
>>   		return retval;
>>   
>> @@ -584,13 +578,13 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
>>   		return -EIO;
>>   	}
>>   
>> -	retval = exynos_dp_read_bytes_from_dpcd(dp,
>> -			DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
>> +	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1,
>> +						2, adjust_request);
>>   	if (retval)
>>   		return retval;
>>   
>> -	retval = exynos_dp_read_byte_from_dpcd(dp,
>> -			DP_LANE_ALIGN_STATUS_UPDATED, &link_align);
>> +	retval = exynos_dp_read_byte_from_dpcd(dp, DP_LANE_ALIGN_STATUS_UPDATED,
>> +					       &link_align);
>>   	if (retval)
>>   		return retval;
>>   
>> @@ -629,17 +623,18 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
>>   	}
>>   
>>   	for (lane = 0; lane < lane_count; lane++)
>> -		exynos_dp_set_lane_link_training(dp,
>> -			dp->link_train.training_lane[lane], lane);
>> +		exynos_dp_set_lane_link_training(
>> +				dp, dp->link_train.training_lane[lane], lane);
> ditto

Done

>
>>   
>>   	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
>> -			lane_count, dp->link_train.training_lane);
>> +					       lane_count,
>> +					       dp->link_train.training_lane);
>>   
>>   	return retval;
>>   }
>>   
>>   static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp,
>> -					u8 *bandwidth)
>> +					   u8 *bandwidth)
>>   {
>>   	u8 data;
>>   
>> @@ -652,7 +647,7 @@ static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp,
>>   }
>>   
>>   static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp,
>> -					u8 *lane_count)
>> +					    u8 *lane_count)
>>   {
>>   	u8 data;
>>   
>> @@ -665,8 +660,8 @@ static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp,
>>   }
>>   
>>   static void exynos_dp_init_training(struct exynos_dp_device *dp,
>> -			enum link_lane_count_type max_lane,
>> -			enum link_rate_type max_rate)
>> +				    enum link_lane_count_type max_lane,
>> +				    enum link_rate_type max_rate)
>>   {
>>   	/*
>>   	 * MACRO_RST must be applied after the PLL_LOCK to avoid
>> @@ -679,7 +674,7 @@ static void exynos_dp_init_training(struct exynos_dp_device *dp,
>>   	exynos_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count);
>>   
>>   	if ((dp->link_train.link_rate != LINK_RATE_1_62GBPS) &&
>> -	   (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) {
>> +	    (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) {
>>   		dev_err(dp->dev, "Rx Max Link Rate is abnormal :%x !\n",
>>   			dp->link_train.link_rate);
>>   		dp->link_train.link_rate = LINK_RATE_1_62GBPS;
>> @@ -739,8 +734,7 @@ static int exynos_dp_sw_link_training(struct exynos_dp_device *dp)
>>   }
>>   
>>   static int exynos_dp_set_link_train(struct exynos_dp_device *dp,
>> -				u32 count,
>> -				u32 bwtype)
>> +				    u32 count, u32 bwtype)
>>   {
>>   	int i;
>>   	int retval;
>> @@ -828,21 +822,19 @@ static void exynos_dp_enable_scramble(struct exynos_dp_device *dp, bool enable)
>>   	if (enable) {
>>   		exynos_dp_enable_scrambling(dp);
>>   
>> -		exynos_dp_read_byte_from_dpcd(dp,
>> -			DP_TRAINING_PATTERN_SET,
>> -			&data);
>> -		exynos_dp_write_byte_to_dpcd(dp,
>> -			DP_TRAINING_PATTERN_SET,
>> -			(u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
>> +		exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
>> +					      &data);
>> +		exynos_dp_write_byte_to_dpcd(
>> +				dp, DP_TRAINING_PATTERN_SET,
>> +				(u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
> ditto

Done

>
>>   	} else {
>>   		exynos_dp_disable_scrambling(dp);
>>   
>> -		exynos_dp_read_byte_from_dpcd(dp,
>> -			DP_TRAINING_PATTERN_SET,
>> -			&data);
>> -		exynos_dp_write_byte_to_dpcd(dp,
>> -			DP_TRAINING_PATTERN_SET,
>> -			(u8)(data | DP_LINK_SCRAMBLING_DISABLE));
>> +		exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
>> +					      &data);
>> +		exynos_dp_write_byte_to_dpcd(
>> +				dp, DP_TRAINING_PATTERN_SET,
>> +				(u8)(data | DP_LINK_SCRAMBLING_DISABLE));
> ditto

Done

>
>>   	}
>>   }
>>   
>> @@ -913,7 +905,7 @@ static void exynos_dp_commit(struct drm_encoder *encoder)
>>   	}
>>   
>>   	ret = exynos_dp_set_link_train(dp, dp->video_info->lane_count,
>> -					dp->video_info->link_rate);
>> +				       dp->video_info->link_rate);
>>   	if (ret) {
>>   		dev_err(dp->dev, "unable to do link train\n");
>>   		return;
>> @@ -941,8 +933,8 @@ static void exynos_dp_commit(struct drm_encoder *encoder)
>>   	exynos_dp_start_video(dp);
>>   }
>>   
>> -static enum drm_connector_status exynos_dp_detect(
>> -				struct drm_connector *connector, bool force)
>> +static enum drm_connector_status
>> +exynos_dp_detect(struct drm_connector *connector, bool force)
>>   {
>>   	return connector_status_connected;
>>   }
>> @@ -990,8 +982,8 @@ static int exynos_dp_get_modes(struct drm_connector *connector)
>>   	return 1;
>>   }
>>   
>> -static struct drm_encoder *exynos_dp_best_encoder(
>> -			struct drm_connector *connector)
>> +static struct drm_encoder *
>> +exynos_dp_best_encoder(struct drm_connector *connector)
>>   {
>>   	struct exynos_dp_device *dp = ctx_from_connector(connector);
>>   
>> @@ -1005,7 +997,7 @@ static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
>>   
>>   /* returns the number of bridges attached */
>>   static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
>> -		struct drm_encoder *encoder)
>> +					struct drm_encoder *encoder)
>>   {
>>   	int ret;
>>   
>> @@ -1036,7 +1028,8 @@ static int exynos_dp_create_connector(struct drm_encoder *encoder)
>>   	connector->polled = DRM_CONNECTOR_POLL_HPD;
>>   
>>   	ret = drm_connector_init(dp->drm_dev, connector,
>> -			&exynos_dp_connector_funcs, DRM_MODE_CONNECTOR_eDP);
>> +				 &exynos_dp_connector_funcs,
>> +				 DRM_MODE_CONNECTOR_eDP);
>>   	if (ret) {
>>   		DRM_ERROR("Failed to initialize connector with drm\n");
>>   		return ret;
>> @@ -1139,8 +1132,8 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
>>   	struct device_node *dp_node = dev->of_node;
>>   	struct video_info *dp_video_config;
>>   
>> -	dp_video_config = devm_kzalloc(dev,
>> -				sizeof(*dp_video_config), GFP_KERNEL);
>> +	dp_video_config = devm_kzalloc(dev, sizeof(*dp_video_config),
>> +				       GFP_KERNEL);
>>   	if (!dp_video_config)
>>   		return ERR_PTR(-ENOMEM);
>>   
>> @@ -1154,37 +1147,37 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
>>   		of_property_read_bool(dp_node, "interlaced");
>>   
>>   	if (of_property_read_u32(dp_node, "samsung,color-space",
>> -				&dp_video_config->color_space)) {
>> +				 &dp_video_config->color_space)) {
>>   		dev_err(dev, "failed to get color-space\n");
>>   		return ERR_PTR(-EINVAL);
>>   	}
>>   
>>   	if (of_property_read_u32(dp_node, "samsung,dynamic-range",
>> -				&dp_video_config->dynamic_range)) {
>> +				 &dp_video_config->dynamic_range)) {
>>   		dev_err(dev, "failed to get dynamic-range\n");
>>   		return ERR_PTR(-EINVAL);
>>   	}
>>   
>>   	if (of_property_read_u32(dp_node, "samsung,ycbcr-coeff",
>> -				&dp_video_config->ycbcr_coeff)) {
>> +				 &dp_video_config->ycbcr_coeff)) {
>>   		dev_err(dev, "failed to get ycbcr-coeff\n");
>>   		return ERR_PTR(-EINVAL);
>>   	}
>>   
>>   	if (of_property_read_u32(dp_node, "samsung,color-depth",
>> -				&dp_video_config->color_depth)) {
>> +				 &dp_video_config->color_depth)) {
>>   		dev_err(dev, "failed to get color-depth\n");
>>   		return ERR_PTR(-EINVAL);
>>   	}
>>   
>>   	if (of_property_read_u32(dp_node, "samsung,link-rate",
>> -				&dp_video_config->link_rate)) {
>> +				 &dp_video_config->link_rate)) {
>>   		dev_err(dev, "failed to get link-rate\n");
>>   		return ERR_PTR(-EINVAL);
>>   	}
>>   
>>   	if (of_property_read_u32(dp_node, "samsung,lane-count",
>> -				&dp_video_config->lane_count)) {
>> +				 &dp_video_config->lane_count)) {
>>   		dev_err(dev, "failed to get lane-count\n");
>>   		return ERR_PTR(-EINVAL);
>>   	}
>> @@ -1197,7 +1190,7 @@ static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
>>   	int ret;
>>   
>>   	ret = of_get_videomode(dp->dev->of_node, &dp->priv.vm,
>> -			OF_USE_NATIVE_MODE);
>> +			       OF_USE_NATIVE_MODE);
>>   	if (ret) {
>>   		DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
>>   		return ret;
>> @@ -1294,7 +1287,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>>   	exynos_dp_init_dp(dp);
>>   
>>   	ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler,
>> -			irq_flags, "exynos-dp", dp);
>> +			       irq_flags, "exynos-dp", dp);
>>   	if (ret) {
>>   		dev_err(&pdev->dev, "failed to request irq\n");
>>   		return ret;
>> @@ -1328,7 +1321,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>>   }
>>   
>>   static void exynos_dp_unbind(struct device *dev, struct device *master,
>> -				void *data)
>> +			     void *data)
>>   {
>>   	struct exynos_dp_device *dp = dev_get_drvdata(dev);
>>   
>> @@ -1347,7 +1340,7 @@ static int exynos_dp_probe(struct platform_device *pdev)
>>   	struct exynos_dp_device *dp;
>>   
>>   	dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
>> -				GFP_KERNEL);
>> +			  GFP_KERNEL);
>>   	if (!dp)
>>   		return -ENOMEM;
>>   
>> @@ -1369,8 +1362,9 @@ static int exynos_dp_probe(struct platform_device *pdev)
>>   			of_node_put(bridge_node);
>>   			if (!dp->bridge)
>>   				return -EPROBE_DEFER;
>> -		} else
>> +		} else {
>>   			return -EPROBE_DEFER;
>> +		}
>>   	}
>>   
>>   	return component_add(&pdev->dev, &exynos_dp_ops);
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
>> index e413b6f..71f2b86 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.h
>> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.h
>> @@ -179,8 +179,8 @@ void exynos_dp_config_interrupt(struct exynos_dp_device *dp);
>>   enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp);
>>   void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable);
>>   void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
>> -				enum analog_power_block block,
>> -				bool enable);
>> +				     enum analog_power_block block,
>> +				     bool enable);
>>   void exynos_dp_init_analog_func(struct exynos_dp_device *dp);
>>   void exynos_dp_init_hpd(struct exynos_dp_device *dp);
>>   enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp);
>> @@ -191,50 +191,50 @@ int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp);
>>   void exynos_dp_enable_sw_function(struct exynos_dp_device *dp);
>>   int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp);
>>   int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
>> -				unsigned int reg_addr,
>> -				unsigned char data);
>> +				 unsigned int reg_addr,
>> +				 unsigned char data);
>>   int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
>> -				unsigned int reg_addr,
>> -				unsigned char *data);
>> +				  unsigned int reg_addr,
>> +				  unsigned char *data);
>>   int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
>> -				unsigned int reg_addr,
>> -				unsigned int count,
>> -				unsigned char data[]);
>> +				  unsigned int reg_addr,
>> +				  unsigned int count,
>> +				  unsigned char data[]);
>>   int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
>> -				unsigned int reg_addr,
>> -				unsigned int count,
>> -				unsigned char data[]);
>> +				   unsigned int reg_addr,
>> +				   unsigned int count,
>> +				   unsigned char data[]);
>>   int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
>>   				unsigned int device_addr,
>>   				unsigned int reg_addr);
>>   int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
>> -				unsigned int device_addr,
>> -				unsigned int reg_addr,
>> -				unsigned int *data);
>> +				 unsigned int device_addr,
>> +				 unsigned int reg_addr,
>> +				 unsigned int *data);
>>   int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
>> -				unsigned int device_addr,
>> -				unsigned int reg_addr,
>> -				unsigned int count,
>> -				unsigned char edid[]);
>> +				  unsigned int device_addr,
>> +				  unsigned int reg_addr,
>> +				  unsigned int count,
>> +				  unsigned char edid[]);
>>   void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype);
>>   void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype);
>>   void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count);
>>   void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count);
>>   void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable);
>>   void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
>> -				 enum pattern_set pattern);
>> +				    enum pattern_set pattern);
>>   void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level);
>>   void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level);
>>   void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level);
>>   void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level);
>>   void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
>> -				u32 training_lane);
>> +				       u32 training_lane);
>>   void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
>> -				u32 training_lane);
>> +				       u32 training_lane);
>>   void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
>> -				u32 training_lane);
>> +				       u32 training_lane);
>>   void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
>> -				u32 training_lane);
>> +				       u32 training_lane);
>>   u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp);
>>   u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp);
>>   u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp);
>> @@ -245,9 +245,9 @@ void exynos_dp_init_video(struct exynos_dp_device *dp);
>>   void exynos_dp_set_video_color_format(struct exynos_dp_device *dp);
>>   int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp);
>>   void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
>> -			enum clock_recovery_m_value_type type,
>> -			u32 m_value,
>> -			u32 n_value);
>> +			       enum clock_recovery_m_value_type type,
>> +			       u32 m_value,
>> +			       u32 n_value);
>>   void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type);
>>   void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable);
>>   void exynos_dp_start_video(struct exynos_dp_device *dp);
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_reg.c b/drivers/gpu/drm/exynos/exynos_dp_reg.c
>> index c1f87a2..5aff19a 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_reg.c
>> +++ b/drivers/gpu/drm/exynos/exynos_dp_reg.c
>> @@ -202,8 +202,8 @@ void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable)
>>   }
>>   
>>   void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
>> -				enum analog_power_block block,
>> -				bool enable)
>> +				     enum analog_power_block block,
>> +				     bool enable)
>>   {
>>   	u32 reg;
>>   
>> @@ -399,8 +399,8 @@ void exynos_dp_init_aux(struct exynos_dp_device *dp)
>>   	exynos_dp_reset_aux(dp);
>>   
>>   	/* Disable AUX transaction H/W retry */
>> -	reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0)|
>> -		AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
>> +	reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0) |
>> +	      AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
>>   	writel(reg, dp->reg_base + EXYNOS_DP_AUX_HW_RETRY_CTL);
>>   
>>   	/* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
>> @@ -483,8 +483,8 @@ int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp)
>>   }
>>   
>>   int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
>> -				unsigned int reg_addr,
>> -				unsigned char data)
>> +				 unsigned int reg_addr,
>> +				 unsigned char data)
>>   {
>>   	u32 reg;
>>   	int i;
>> @@ -519,17 +519,16 @@ int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
>>   		retval = exynos_dp_start_aux_transaction(dp);
>>   		if (retval == 0)
>>   			break;
>> -		else
>> -			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
>> -				__func__);
>> +
>> +		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
>>   	}
>>   
>>   	return retval;
>>   }
>>   
>>   int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
>> -				unsigned int reg_addr,
>> -				unsigned char *data)
>> +				  unsigned int reg_addr,
>> +				  unsigned char *data)
>>   {
>>   	u32 reg;
>>   	int i;
>> @@ -560,9 +559,8 @@ int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
>>   		retval = exynos_dp_start_aux_transaction(dp);
>>   		if (retval == 0)
>>   			break;
>> -		else
>> -			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
>> -				__func__);
>> +
>> +		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
>>   	}
>>   
>>   	/* Read data buffer */
>> @@ -573,9 +571,9 @@ int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
>>   }
>>   
>>   int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
>> -				unsigned int reg_addr,
>> -				unsigned int count,
>> -				unsigned char data[])
>> +				  unsigned int reg_addr,
>> +				  unsigned int count,
>> +				  unsigned char data[])
>>   {
>>   	u32 reg;
>>   	unsigned int start_offset;
>> @@ -625,9 +623,9 @@ int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
>>   			retval = exynos_dp_start_aux_transaction(dp);
>>   			if (retval == 0)
>>   				break;
>> -			else
>> -				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
>> -					__func__);
>> +
>> +			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
>> +				__func__);
>>   		}
>>   
>>   		start_offset += cur_data_count;
>> @@ -637,9 +635,9 @@ int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
>>   }
>>   
>>   int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
>> -				unsigned int reg_addr,
>> -				unsigned int count,
>> -				unsigned char data[])
>> +				   unsigned int reg_addr,
>> +				   unsigned int count,
>> +				   unsigned char data[])
>>   {
>>   	u32 reg;
>>   	unsigned int start_offset;
>> @@ -683,9 +681,9 @@ int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
>>   			retval = exynos_dp_start_aux_transaction(dp);
>>   			if (retval == 0)
>>   				break;
>> -			else
>> -				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
>> -					__func__);
>> +
>> +			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
>> +				__func__);
>>   		}
>>   
>>   		for (cur_data_idx = 0; cur_data_idx < cur_data_count;
>> @@ -736,9 +734,9 @@ int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
>>   }
>>   
>>   int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
>> -				unsigned int device_addr,
>> -				unsigned int reg_addr,
>> -				unsigned int *data)
>> +				 unsigned int device_addr,
>> +				 unsigned int reg_addr,
>> +				 unsigned int *data)
>>   {
>>   	u32 reg;
>>   	int i;
>> @@ -767,9 +765,8 @@ int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
>>   		retval = exynos_dp_start_aux_transaction(dp);
>>   		if (retval == 0)
>>   			break;
>> -		else
>> -			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
>> -				__func__);
>> +
>> +		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
>>   	}
>>   
>>   	/* Read data */
>> @@ -780,10 +777,10 @@ int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
>>   }
>>   
>>   int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
>> -				unsigned int device_addr,
>> -				unsigned int reg_addr,
>> -				unsigned int count,
>> -				unsigned char edid[])
>> +				  unsigned int device_addr,
>> +				  unsigned int reg_addr,
>> +				  unsigned int count,
>> +				  unsigned char edid[])
>>   {
>>   	u32 reg;
>>   	unsigned int i, j;
>> @@ -807,8 +804,8 @@ int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
>>   			 * request without sending address
>>   			 */
>>   			if (!defer)
>> -				retval = exynos_dp_select_i2c_device(dp,
>> -						device_addr, reg_addr + i);
>> +				retval = exynos_dp_select_i2c_device(
>> +						dp, device_addr, reg_addr + i);
> ditto

Done

Thanks,
- Yakir

>
> Best regards,
> Krzysztof
>
>>   			else
>>   				defer = 0;
>>   
>> @@ -819,24 +816,23 @@ int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
>>   				 * If Bit 3 is 0, I2C transaction.
>>   				 */
>>   				reg = AUX_LENGTH(16) |
>> -					AUX_TX_COMM_I2C_TRANSACTION |
>> -					AUX_TX_COMM_READ;
>> +				      AUX_TX_COMM_I2C_TRANSACTION |
>> +				      AUX_TX_COMM_READ;
>>   				writel(reg, dp->reg_base +
>> -					EXYNOS_DP_AUX_CH_CTL_1);
>> +				       EXYNOS_DP_AUX_CH_CTL_1);
>>   
>>   				/* Start AUX transaction */
>>   				retval = exynos_dp_start_aux_transaction(dp);
>>   				if (retval == 0)
>>   					break;
>> -				else
>> -					dev_dbg(dp->dev,
>> -						"%s: Aux Transaction fail!\n",
>> -						__func__);
>> +
>> +				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
>> +					__func__);
>>   			}
>>   			/* Check if Rx sends defer */
>>   			reg = readl(dp->reg_base + EXYNOS_DP_AUX_RX_COMM);
>>   			if (reg == AUX_RX_COMM_AUX_DEFER ||
>> -				reg == AUX_RX_COMM_I2C_DEFER) {
>> +			    reg == AUX_RX_COMM_I2C_DEFER) {
>>   				dev_err(dp->dev, "Defer: %d\n\n", reg);
>>   				defer = 1;
>>   			}
>> @@ -901,7 +897,7 @@ void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable)
>>   }
>>   
>>   void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
>> -				 enum pattern_set pattern)
>> +				    enum pattern_set pattern)
>>   {
>>   	u32 reg;
>>   
>> @@ -974,7 +970,7 @@ void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level)
>>   }
>>   
>>   void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
>> -					u32 training_lane)
>> +				       u32 training_lane)
>>   {
>>   	u32 reg;
>>   
>> @@ -983,7 +979,7 @@ void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
>>   }
>>   
>>   void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
>> -					u32 training_lane)
>> +				       u32 training_lane)
>>   {
>>   	u32 reg;
>>   
>> @@ -992,7 +988,7 @@ void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
>>   }
>>   
>>   void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
>> -					u32 training_lane)
>> +				       u32 training_lane)
>>   {
>>   	u32 reg;
>>   
>> @@ -1001,7 +997,7 @@ void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
>>   }
>>   
>>   void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
>> -					u32 training_lane)
>> +				       u32 training_lane)
>>   {
>>   	u32 reg;
>>   
>> @@ -1125,9 +1121,9 @@ int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp)
>>   }
>>   
>>   void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
>> -		enum clock_recovery_m_value_type type,
>> -		u32 m_value,
>> -		u32 n_value)
>> +			       enum clock_recovery_m_value_type type,
>> +			       u32 m_value,
>> +			       u32 n_value)
>>   {
>>   	u32 reg;
>>   
>> @@ -1221,7 +1217,7 @@ void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp)
>>   	u32 reg;
>>   
>>   	reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_1);
>> -	reg &= ~(MASTER_VID_FUNC_EN_N|SLAVE_VID_FUNC_EN_N);
>> +	reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
>>   	reg |= MASTER_VID_FUNC_EN_N;
>>   	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1);
>>   
>>
>
>
>
Krzysztof Kozlowski Sept. 3, 2015, 5:08 a.m. UTC | #3
On 03.09.2015 14:04, Yakir Yang wrote:
> Hi Krzysztof,
> 
> ? 09/03/2015 08:21 AM, Krzysztof Kozlowski ??:
>> On 01.09.2015 14:46, Yakir Yang wrote:
>>> After run "checkpatch.pl -f --subjective" command, I see there
>>> are lots of alignment problem in exynos_dp driver, so let just
>>> fix them.
>> Hi,
>>
>> Warnings from checkpatch are not a reason for a commit. Reason for a
>> commit could be for example an unreadable code, violation of
>> coding-style leading to decrease in code maintainability or just
>> improving the code readability so it will be easier to review and
>> maintain it.
>>
>> You do not make commits because some tool tells you that. We do not
>> listen to machines :) ... If that would be the case, the commit could be
>> made automatically, without human interaction. Such automated commit
>> could be even easily tested by the machine by comparing object files.
>>
>> Especially that you enabled "subjective" rule. This is not a valid
>> motivation for a commit.
>>
>> Please rephrase this to sensible reason and convince that change is
>> worth the effort.
> 
> Oh, nice, thanks for your remind. I would rephrase the commit.
> 
>>> - Take Romain suggest, rebase on linux-next branch
>> That comment seems unrelated to the commit. Please remove it.
> 
> Done,
> 
>>
>>> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
>>> ---
>>> Changes in v4: None
>>> Changes in v3: None
>>> Changes in v2:
>>> - Take Joe Preches advise, improved commit message more readable, and
>>>    avoid using some uncommon style like bellow:
>>>    -  retval = exynos_dp_read_bytes_from_i2c(...
>>>                 ...)
>>>    +  retval =
>>>    +  exynos_dp_read_bytes_from_i2c(......);
>>>
>>>   drivers/gpu/drm/exynos/exynos_dp_core.c | 226
>>> ++++++++++++++++----------------
>>>   drivers/gpu/drm/exynos/exynos_dp_core.h |  54 ++++----
>>>   drivers/gpu/drm/exynos/exynos_dp_reg.c  | 106 +++++++--------
>>>   3 files changed, 188 insertions(+), 198 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
>>> b/drivers/gpu/drm/exynos/exynos_dp_core.c
>>> index d66ade0..266f7f7 100644
>>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>>> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
>>> @@ -115,8 +115,8 @@ static int exynos_dp_read_edid(struct
>>> exynos_dp_device *dp)
>>>         /* Read Extension Flag, Number of 128-byte EDID extension
>>> blocks */
>>>       retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>>> -                EDID_EXTENSION_FLAG,
>>> -                &extend_block);
>>> +                          EDID_EXTENSION_FLAG,
>>> +                          &extend_block);
>>>       if (retval)
>>>           return retval;
>>>   @@ -124,10 +124,11 @@ static int exynos_dp_read_edid(struct
>>> exynos_dp_device *dp)
>>>           dev_dbg(dp->dev, "EDID data includes a single extension!\n");
>>>             /* Read EDID data */
>>> -        retval = exynos_dp_read_bytes_from_i2c(dp,
>>> I2C_EDID_DEVICE_ADDR,
>>> -                        EDID_HEADER_PATTERN,
>>> -                        EDID_BLOCK_LENGTH,
>>> -                        &edid[EDID_HEADER_PATTERN]);
>>> +        retval = exynos_dp_read_bytes_from_i2c(
>>> +                    dp, I2C_EDID_DEVICE_ADDR,
>>> +                    EDID_HEADER_PATTERN,
>>> +                    EDID_BLOCK_LENGTH,
>>> +                    &edid[EDID_HEADER_PATTERN]);
>>>           if (retval != 0) {
>>>               dev_err(dp->dev, "EDID Read failed!\n");
>>>               return -EIO;
>>> @@ -139,11 +140,11 @@ static int exynos_dp_read_edid(struct
>>> exynos_dp_device *dp)
>>>           }
>>>             /* Read additional EDID data */
>>> -        retval = exynos_dp_read_bytes_from_i2c(dp,
>>> -                I2C_EDID_DEVICE_ADDR,
>>> -                EDID_BLOCK_LENGTH,
>>> -                EDID_BLOCK_LENGTH,
>>> -                &edid[EDID_BLOCK_LENGTH]);
>>> +        retval = exynos_dp_read_bytes_from_i2c(
>>> +                    dp, I2C_EDID_DEVICE_ADDR,
>>> +                    EDID_BLOCK_LENGTH,
>>> +                    EDID_BLOCK_LENGTH,
>>> +                    &edid[EDID_BLOCK_LENGTH]);
>>>           if (retval != 0) {
>>>               dev_err(dp->dev, "EDID Read failed!\n");
>>>               return -EIO;
>>> @@ -155,24 +156,22 @@ static int exynos_dp_read_edid(struct
>>> exynos_dp_device *dp)
>>>           }
>>>             exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
>>> -                    &test_vector);
>>> +                          &test_vector);
>>>           if (test_vector & DP_TEST_LINK_EDID_READ) {
>>> -            exynos_dp_write_byte_to_dpcd(dp,
>>> -                DP_TEST_EDID_CHECKSUM,
>>> +            exynos_dp_write_byte_to_dpcd(
>>> +                dp, DP_TEST_EDID_CHECKSUM,
>>>                   edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
>>> -            exynos_dp_write_byte_to_dpcd(dp,
>>> -                DP_TEST_RESPONSE,
>>> +            exynos_dp_write_byte_to_dpcd(
>>> +                dp, DP_TEST_RESPONSE,
>>>                   DP_TEST_EDID_CHECKSUM_WRITE);
>> To me, missing argument after opening parenthesis, looks worse. I would
>> prefer:
>>
>>             exynos_dp_write_byte_to_dpcd(dp,
>>
>> Why you moved the 'dp' argument to new line?
> 
> Hmm... Just like style tool indicate, no more warning after
> that change.
> 
> For now, I would like to follow the original style, just improved
> some obvious style problem.  :-)

What was the checkpatch warning that said 'dp' has to move to new line?
I tried this and I don't see it.

Best regards,
Krzysztof
Yakir Yang Sept. 3, 2015, 5:33 a.m. UTC | #4
Hi Krzysztof,

? 09/03/2015 01:08 PM, Krzysztof Kozlowski ??:
> On 03.09.2015 14:04, Yakir Yang wrote:
>> Hi Krzysztof,
>>
>> ? 09/03/2015 08:21 AM, Krzysztof Kozlowski ??:
>>> On 01.09.2015 14:46, Yakir Yang wrote:
>>>> After run "checkpatch.pl -f --subjective" command, I see there
>>>> are lots of alignment problem in exynos_dp driver, so let just
>>>> fix them.
>>> Hi,
>>>
>>> Warnings from checkpatch are not a reason for a commit. Reason for a
>>> commit could be for example an unreadable code, violation of
>>> coding-style leading to decrease in code maintainability or just
>>> improving the code readability so it will be easier to review and
>>> maintain it.
>>>
>>> You do not make commits because some tool tells you that. We do not
>>> listen to machines :) ... If that would be the case, the commit could be
>>> made automatically, without human interaction. Such automated commit
>>> could be even easily tested by the machine by comparing object files.
>>>
>>> Especially that you enabled "subjective" rule. This is not a valid
>>> motivation for a commit.
>>>
>>> Please rephrase this to sensible reason and convince that change is
>>> worth the effort.
>> Oh, nice, thanks for your remind. I would rephrase the commit.
>>
>>>> - Take Romain suggest, rebase on linux-next branch
>>> That comment seems unrelated to the commit. Please remove it.
>> Done,
>>
>>>> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
>>>> ---
>>>> Changes in v4: None
>>>> Changes in v3: None
>>>> Changes in v2:
>>>> - Take Joe Preches advise, improved commit message more readable, and
>>>>     avoid using some uncommon style like bellow:
>>>>     -  retval = exynos_dp_read_bytes_from_i2c(...
>>>>                  ...)
>>>>     +  retval =
>>>>     +  exynos_dp_read_bytes_from_i2c(......);
>>>>
>>>>    drivers/gpu/drm/exynos/exynos_dp_core.c | 226
>>>> ++++++++++++++++----------------
>>>>    drivers/gpu/drm/exynos/exynos_dp_core.h |  54 ++++----
>>>>    drivers/gpu/drm/exynos/exynos_dp_reg.c  | 106 +++++++--------
>>>>    3 files changed, 188 insertions(+), 198 deletions(-)
>>>>
>>>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
>>>> b/drivers/gpu/drm/exynos/exynos_dp_core.c
>>>> index d66ade0..266f7f7 100644
>>>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>>>> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
>>>> @@ -115,8 +115,8 @@ static int exynos_dp_read_edid(struct
>>>> exynos_dp_device *dp)
>>>>          /* Read Extension Flag, Number of 128-byte EDID extension
>>>> blocks */
>>>>        retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>>>> -                EDID_EXTENSION_FLAG,
>>>> -                &extend_block);
>>>> +                          EDID_EXTENSION_FLAG,
>>>> +                          &extend_block);
>>>>        if (retval)
>>>>            return retval;
>>>>    @@ -124,10 +124,11 @@ static int exynos_dp_read_edid(struct
>>>> exynos_dp_device *dp)
>>>>            dev_dbg(dp->dev, "EDID data includes a single extension!\n");
>>>>              /* Read EDID data */
>>>> -        retval = exynos_dp_read_bytes_from_i2c(dp,
>>>> I2C_EDID_DEVICE_ADDR,
>>>> -                        EDID_HEADER_PATTERN,
>>>> -                        EDID_BLOCK_LENGTH,
>>>> -                        &edid[EDID_HEADER_PATTERN]);
>>>> +        retval = exynos_dp_read_bytes_from_i2c(
>>>> +                    dp, I2C_EDID_DEVICE_ADDR,
>>>> +                    EDID_HEADER_PATTERN,
>>>> +                    EDID_BLOCK_LENGTH,
>>>> +                    &edid[EDID_HEADER_PATTERN]);
>>>>            if (retval != 0) {
>>>>                dev_err(dp->dev, "EDID Read failed!\n");
>>>>                return -EIO;
>>>> @@ -139,11 +140,11 @@ static int exynos_dp_read_edid(struct
>>>> exynos_dp_device *dp)
>>>>            }
>>>>              /* Read additional EDID data */
>>>> -        retval = exynos_dp_read_bytes_from_i2c(dp,
>>>> -                I2C_EDID_DEVICE_ADDR,
>>>> -                EDID_BLOCK_LENGTH,
>>>> -                EDID_BLOCK_LENGTH,
>>>> -                &edid[EDID_BLOCK_LENGTH]);
>>>> +        retval = exynos_dp_read_bytes_from_i2c(
>>>> +                    dp, I2C_EDID_DEVICE_ADDR,
>>>> +                    EDID_BLOCK_LENGTH,
>>>> +                    EDID_BLOCK_LENGTH,
>>>> +                    &edid[EDID_BLOCK_LENGTH]);
>>>>            if (retval != 0) {
>>>>                dev_err(dp->dev, "EDID Read failed!\n");
>>>>                return -EIO;
>>>> @@ -155,24 +156,22 @@ static int exynos_dp_read_edid(struct
>>>> exynos_dp_device *dp)
>>>>            }
>>>>              exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
>>>> -                    &test_vector);
>>>> +                          &test_vector);
>>>>            if (test_vector & DP_TEST_LINK_EDID_READ) {
>>>> -            exynos_dp_write_byte_to_dpcd(dp,
>>>> -                DP_TEST_EDID_CHECKSUM,
>>>> +            exynos_dp_write_byte_to_dpcd(
>>>> +                dp, DP_TEST_EDID_CHECKSUM,
>>>>                    edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
>>>> -            exynos_dp_write_byte_to_dpcd(dp,
>>>> -                DP_TEST_RESPONSE,
>>>> +            exynos_dp_write_byte_to_dpcd(
>>>> +                dp, DP_TEST_RESPONSE,
>>>>                    DP_TEST_EDID_CHECKSUM_WRITE);
>>> To me, missing argument after opening parenthesis, looks worse. I would
>>> prefer:
>>>
>>>              exynos_dp_write_byte_to_dpcd(dp,
>>>
>>> Why you moved the 'dp' argument to new line?
>> Hmm... Just like style tool indicate, no more warning after
>> that change.
>>
>> For now, I would like to follow the original style, just improved
>> some obvious style problem.  :-)
> What was the checkpatch warning that said 'dp' has to move to new line?
> I tried this and I don't see it.

checkpatch haven't remind me that put dp to new line would fix
this warning, this just come from my experiments. And I works,
no more warnings from checkpatch, so I toke this style.

- Yakir

> Best regards,
> Krzysztof
>
>
>
>
Joe Perches Sept. 3, 2015, 5:57 a.m. UTC | #5
On Thu, 2015-09-03 at 13:33 +0800, Yakir Yang wrote:
[]
> >>>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
[]
> >>>> @@ -155,24 +156,22 @@ static int exynos_dp_read_edid(struct
> >>>> exynos_dp_device *dp)
> >>>>            }
> >>>>              exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
> >>>> -                    &test_vector);
> >>>> +                          &test_vector);
> >>>>            if (test_vector & DP_TEST_LINK_EDID_READ) {
> >>>> -            exynos_dp_write_byte_to_dpcd(dp,
> >>>> -                DP_TEST_EDID_CHECKSUM,
> >>>> +            exynos_dp_write_byte_to_dpcd(
> >>>> +                dp, DP_TEST_EDID_CHECKSUM,
> >>>>                    edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
> >>>> -            exynos_dp_write_byte_to_dpcd(dp,
> >>>> -                DP_TEST_RESPONSE,
> >>>> +            exynos_dp_write_byte_to_dpcd(
> >>>> +                dp, DP_TEST_RESPONSE,
> >>>>                    DP_TEST_EDID_CHECKSUM_WRITE);
> >>> To me, missing argument after opening parenthesis, looks worse. I would
> >>> prefer:
> >>>
> >>>              exynos_dp_write_byte_to_dpcd(dp,
> >>>
> >>> Why you moved the 'dp' argument to new line?
> >> Hmm... Just like style tool indicate, no more warning after
> >> that change.
> >>
> >> For now, I would like to follow the original style, just improved
> >> some obvious style problem.  :-)
> > What was the checkpatch warning that said 'dp' has to move to new line?
> > I tried this and I don't see it.
> 
> checkpatch haven't remind me that put dp to new line would fix
> this warning, this just come from my experiments. And I works,
> no more warnings from checkpatch, so I toke this style.

Checkpatch isn't a great arbiter of style.
It's just a brainless tool.

Always use your instead of anything brainless.

If it were code I was writing, I'd ignore 80 columns warnings
where appropriate.

These are long function names and long macro defines, so it's
inappropriate to use 80 columns as a guiding style.

I'd write:

		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST, &test_vector);
		if (test_vector & DP_TEST_LINK_EDID_READ) {
			exynos_dp_write_byte_to_dpcd(dp, DP_TEST_EDID_CHECKSUM,
						     edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
			exynos_dp_write_byte_to_dpcd(dp, DP_TEST_RESPONSE,
						     DP_TEST_EDID_CHECKSUM_WRITE);
		}
Yakir Yang Sept. 6, 2015, 1:33 a.m. UTC | #6
Hi Joe,

? 09/03/2015 01:57 PM, Joe Perches ??:
> On Thu, 2015-09-03 at 13:33 +0800, Yakir Yang wrote:
> []
>>>>>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
> []
>>>>>> @@ -155,24 +156,22 @@ static int exynos_dp_read_edid(struct
>>>>>> exynos_dp_device *dp)
>>>>>>             }
>>>>>>               exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
>>>>>> -                    &test_vector);
>>>>>> +                          &test_vector);
>>>>>>             if (test_vector & DP_TEST_LINK_EDID_READ) {
>>>>>> -            exynos_dp_write_byte_to_dpcd(dp,
>>>>>> -                DP_TEST_EDID_CHECKSUM,
>>>>>> +            exynos_dp_write_byte_to_dpcd(
>>>>>> +                dp, DP_TEST_EDID_CHECKSUM,
>>>>>>                     edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
>>>>>> -            exynos_dp_write_byte_to_dpcd(dp,
>>>>>> -                DP_TEST_RESPONSE,
>>>>>> +            exynos_dp_write_byte_to_dpcd(
>>>>>> +                dp, DP_TEST_RESPONSE,
>>>>>>                     DP_TEST_EDID_CHECKSUM_WRITE);
>>>>> To me, missing argument after opening parenthesis, looks worse. I would
>>>>> prefer:
>>>>>
>>>>>               exynos_dp_write_byte_to_dpcd(dp,
>>>>>
>>>>> Why you moved the 'dp' argument to new line?
>>>> Hmm... Just like style tool indicate, no more warning after
>>>> that change.
>>>>
>>>> For now, I would like to follow the original style, just improved
>>>> some obvious style problem.  :-)
>>> What was the checkpatch warning that said 'dp' has to move to new line?
>>> I tried this and I don't see it.
>> checkpatch haven't remind me that put dp to new line would fix
>> this warning, this just come from my experiments. And I works,
>> no more warnings from checkpatch, so I toke this style.
> Checkpatch isn't a great arbiter of style.
> It's just a brainless tool.
>
> Always use your instead of anything brainless.
>
> If it were code I was writing, I'd ignore 80 columns warnings
> where appropriate.
>
> These are long function names and long macro defines, so it's
> inappropriate to use 80 columns as a guiding style.
>
> I'd write:
>
> 		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST, &test_vector);
> 		if (test_vector & DP_TEST_LINK_EDID_READ) {
> 			exynos_dp_write_byte_to_dpcd(dp, DP_TEST_EDID_CHECKSUM,
> 						     edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
> 			exynos_dp_write_byte_to_dpcd(dp, DP_TEST_RESPONSE,
> 						     DP_TEST_EDID_CHECKSUM_WRITE);
> 		}
>

So... just ignore the 80 columns warnings. Actually I prefer to
keep the original style in this case.

Thanks,
- Yakir
]
>
>
>

Patch
diff mbox

diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index d66ade0..266f7f7 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -115,8 +115,8 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 
 	/* Read Extension Flag, Number of 128-byte EDID extension blocks */
 	retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
-				EDID_EXTENSION_FLAG,
-				&extend_block);
+					      EDID_EXTENSION_FLAG,
+					      &extend_block);
 	if (retval)
 		return retval;
 
@@ -124,10 +124,11 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 		dev_dbg(dp->dev, "EDID data includes a single extension!\n");
 
 		/* Read EDID data */
-		retval = exynos_dp_read_bytes_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
-						EDID_HEADER_PATTERN,
-						EDID_BLOCK_LENGTH,
-						&edid[EDID_HEADER_PATTERN]);
+		retval = exynos_dp_read_bytes_from_i2c(
+					dp, I2C_EDID_DEVICE_ADDR,
+					EDID_HEADER_PATTERN,
+					EDID_BLOCK_LENGTH,
+					&edid[EDID_HEADER_PATTERN]);
 		if (retval != 0) {
 			dev_err(dp->dev, "EDID Read failed!\n");
 			return -EIO;
@@ -139,11 +140,11 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 		}
 
 		/* Read additional EDID data */
-		retval = exynos_dp_read_bytes_from_i2c(dp,
-				I2C_EDID_DEVICE_ADDR,
-				EDID_BLOCK_LENGTH,
-				EDID_BLOCK_LENGTH,
-				&edid[EDID_BLOCK_LENGTH]);
+		retval = exynos_dp_read_bytes_from_i2c(
+					dp, I2C_EDID_DEVICE_ADDR,
+					EDID_BLOCK_LENGTH,
+					EDID_BLOCK_LENGTH,
+					&edid[EDID_BLOCK_LENGTH]);
 		if (retval != 0) {
 			dev_err(dp->dev, "EDID Read failed!\n");
 			return -EIO;
@@ -155,24 +156,22 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 		}
 
 		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
-					&test_vector);
+					      &test_vector);
 		if (test_vector & DP_TEST_LINK_EDID_READ) {
-			exynos_dp_write_byte_to_dpcd(dp,
-				DP_TEST_EDID_CHECKSUM,
+			exynos_dp_write_byte_to_dpcd(
+				dp, DP_TEST_EDID_CHECKSUM,
 				edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
-			exynos_dp_write_byte_to_dpcd(dp,
-				DP_TEST_RESPONSE,
+			exynos_dp_write_byte_to_dpcd(
+				dp, DP_TEST_RESPONSE,
 				DP_TEST_EDID_CHECKSUM_WRITE);
 		}
 	} else {
 		dev_info(dp->dev, "EDID data does not include any extensions.\n");
 
 		/* Read EDID data */
-		retval = exynos_dp_read_bytes_from_i2c(dp,
-				I2C_EDID_DEVICE_ADDR,
-				EDID_HEADER_PATTERN,
-				EDID_BLOCK_LENGTH,
-				&edid[EDID_HEADER_PATTERN]);
+		retval = exynos_dp_read_bytes_from_i2c(
+				dp, I2C_EDID_DEVICE_ADDR, EDID_HEADER_PATTERN,
+				EDID_BLOCK_LENGTH, &edid[EDID_HEADER_PATTERN]);
 		if (retval != 0) {
 			dev_err(dp->dev, "EDID Read failed!\n");
 			return -EIO;
@@ -183,16 +182,15 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 			return -EIO;
 		}
 
-		exynos_dp_read_byte_from_dpcd(dp,
-			DP_TEST_REQUEST,
-			&test_vector);
+		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
+					      &test_vector);
 		if (test_vector & DP_TEST_LINK_EDID_READ) {
-			exynos_dp_write_byte_to_dpcd(dp,
-				DP_TEST_EDID_CHECKSUM,
-				edid[EDID_CHECKSUM]);
-			exynos_dp_write_byte_to_dpcd(dp,
-				DP_TEST_RESPONSE,
-				DP_TEST_EDID_CHECKSUM_WRITE);
+			exynos_dp_write_byte_to_dpcd(
+					dp, DP_TEST_EDID_CHECKSUM,
+					edid[EDID_CHECKSUM]);
+			exynos_dp_write_byte_to_dpcd(
+					dp, DP_TEST_RESPONSE,
+					DP_TEST_EDID_CHECKSUM_WRITE);
 		}
 	}
 
@@ -207,8 +205,7 @@  static int exynos_dp_handle_edid(struct exynos_dp_device *dp)
 	int retval;
 
 	/* Read DPCD DP_DPCD_REV~RECEIVE_PORT1_CAP_1 */
-	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV,
-				12, buf);
+	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV, 12, buf);
 	if (retval)
 		return retval;
 
@@ -223,7 +220,7 @@  static int exynos_dp_handle_edid(struct exynos_dp_device *dp)
 }
 
 static void exynos_dp_enable_rx_to_enhanced_mode(struct exynos_dp_device *dp,
-						bool enable)
+						 bool enable)
 {
 	u8 data;
 
@@ -231,11 +228,11 @@  static void exynos_dp_enable_rx_to_enhanced_mode(struct exynos_dp_device *dp,
 
 	if (enable)
 		exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
-			DP_LANE_COUNT_ENHANCED_FRAME_EN |
-			DPCD_LANE_COUNT_SET(data));
+					     DP_LANE_COUNT_ENHANCED_FRAME_EN |
+					     DPCD_LANE_COUNT_SET(data));
 	else
 		exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
-			DPCD_LANE_COUNT_SET(data));
+					     DPCD_LANE_COUNT_SET(data));
 }
 
 static int exynos_dp_is_enhanced_mode_available(struct exynos_dp_device *dp)
@@ -262,13 +259,12 @@  static void exynos_dp_training_pattern_dis(struct exynos_dp_device *dp)
 {
 	exynos_dp_set_training_pattern(dp, DP_NONE);
 
-	exynos_dp_write_byte_to_dpcd(dp,
-		DP_TRAINING_PATTERN_SET,
-		DP_TRAINING_PATTERN_DISABLE);
+	exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
+				     DP_TRAINING_PATTERN_DISABLE);
 }
 
 static void exynos_dp_set_lane_lane_pre_emphasis(struct exynos_dp_device *dp,
-					int pre_emphasis, int lane)
+						 int pre_emphasis, int lane)
 {
 	switch (lane) {
 	case 0:
@@ -308,15 +304,14 @@  static int exynos_dp_link_start(struct exynos_dp_device *dp)
 	/* Setup RX configuration */
 	buf[0] = dp->link_train.link_rate;
 	buf[1] = dp->link_train.lane_count;
-	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET,
-				2, buf);
+	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET, 2, buf);
 	if (retval)
 		return retval;
 
 	/* Set TX pre-emphasis to minimum */
 	for (lane = 0; lane < lane_count; lane++)
-		exynos_dp_set_lane_lane_pre_emphasis(dp,
-			PRE_EMPHASIS_LEVEL_0, lane);
+		exynos_dp_set_lane_lane_pre_emphasis(dp, PRE_EMPHASIS_LEVEL_0,
+						     lane);
 
 	/* Wait for PLL lock */
 	pll_tries = 0;
@@ -334,9 +329,9 @@  static int exynos_dp_link_start(struct exynos_dp_device *dp)
 	exynos_dp_set_training_pattern(dp, TRAINING_PTN1);
 
 	/* Set RX training pattern */
-	retval = exynos_dp_write_byte_to_dpcd(dp,
-			DP_TRAINING_PATTERN_SET,
-			DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_1);
+	retval = exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
+					      DP_LINK_SCRAMBLING_DISABLE |
+					      DP_TRAINING_PATTERN_1);
 	if (retval)
 		return retval;
 
@@ -345,7 +340,7 @@  static int exynos_dp_link_start(struct exynos_dp_device *dp)
 			    DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
 
 	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
-			lane_count, buf);
+					       lane_count, buf);
 
 	return retval;
 }
@@ -353,7 +348,7 @@  static int exynos_dp_link_start(struct exynos_dp_device *dp)
 static unsigned char exynos_dp_get_lane_status(u8 link_status[2], int lane)
 {
 	int shift = (lane & 1) * 4;
-	u8 link_value = link_status[lane>>1];
+	u8 link_value = link_status[lane >> 1];
 
 	return (link_value >> shift) & 0xf;
 }
@@ -372,7 +367,7 @@  static int exynos_dp_clock_recovery_ok(u8 link_status[2], int lane_count)
 }
 
 static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
-				int lane_count)
+				   int lane_count)
 {
 	int lane;
 	u8 lane_status;
@@ -391,10 +386,10 @@  static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
 }
 
 static unsigned char exynos_dp_get_adjust_request_voltage(u8 adjust_request[2],
-							int lane)
+							  int lane)
 {
 	int shift = (lane & 1) * 4;
-	u8 link_value = adjust_request[lane>>1];
+	u8 link_value = adjust_request[lane >> 1];
 
 	return (link_value >> shift) & 0x3;
 }
@@ -404,13 +399,13 @@  static unsigned char exynos_dp_get_adjust_request_pre_emphasis(
 					int lane)
 {
 	int shift = (lane & 1) * 4;
-	u8 link_value = adjust_request[lane>>1];
+	u8 link_value = adjust_request[lane >> 1];
 
 	return ((link_value >> shift) & 0xc) >> 2;
 }
 
 static void exynos_dp_set_lane_link_training(struct exynos_dp_device *dp,
-					u8 training_lane_set, int lane)
+					     u8 training_lane_set, int lane)
 {
 	switch (lane) {
 	case 0:
@@ -430,9 +425,8 @@  static void exynos_dp_set_lane_link_training(struct exynos_dp_device *dp,
 	}
 }
 
-static unsigned int exynos_dp_get_lane_link_training(
-				struct exynos_dp_device *dp,
-				int lane)
+static unsigned int
+exynos_dp_get_lane_link_training(struct exynos_dp_device *dp, int lane)
 {
 	u32 reg;
 
@@ -466,7 +460,7 @@  static void exynos_dp_reduce_link_rate(struct exynos_dp_device *dp)
 }
 
 static void exynos_dp_get_adjust_training_lane(struct exynos_dp_device *dp,
-					u8 adjust_request[2])
+					       u8 adjust_request[2])
 {
 	int lane, lane_count;
 	u8 voltage_swing, pre_emphasis, training_lane;
@@ -499,13 +493,13 @@  static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
 
 	lane_count = dp->link_train.lane_count;
 
-	retval =  exynos_dp_read_bytes_from_dpcd(dp,
-			DP_LANE0_1_STATUS, 2, link_status);
+	retval =  exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
+						 2, link_status);
 	if (retval)
 		return retval;
 
-	retval =  exynos_dp_read_bytes_from_dpcd(dp,
-			DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
+	retval =  exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1,
+						 2, adjust_request);
 	if (retval)
 		return retval;
 
@@ -513,8 +507,8 @@  static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
 		/* set training pattern 2 for EQ */
 		exynos_dp_set_training_pattern(dp, TRAINING_PTN2);
 
-		retval = exynos_dp_write_byte_to_dpcd(dp,
-				DP_TRAINING_PATTERN_SET,
+		retval = exynos_dp_write_byte_to_dpcd(
+				dp, DP_TRAINING_PATTERN_SET,
 				DP_LINK_SCRAMBLING_DISABLE |
 				DP_TRAINING_PATTERN_2);
 		if (retval)
@@ -552,11 +546,11 @@  static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
 	exynos_dp_get_adjust_training_lane(dp, adjust_request);
 
 	for (lane = 0; lane < lane_count; lane++)
-		exynos_dp_set_lane_link_training(dp,
-			dp->link_train.training_lane[lane], lane);
+		exynos_dp_set_lane_link_training(
+				dp, dp->link_train.training_lane[lane], lane);
 
-	retval = exynos_dp_write_bytes_to_dpcd(dp,
-			DP_TRAINING_LANE0_SET, lane_count,
+	retval = exynos_dp_write_bytes_to_dpcd(
+			dp, DP_TRAINING_LANE0_SET, lane_count,
 			dp->link_train.training_lane);
 	if (retval)
 		return retval;
@@ -574,8 +568,8 @@  static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
 
 	lane_count = dp->link_train.lane_count;
 
-	retval = exynos_dp_read_bytes_from_dpcd(dp,
-			DP_LANE0_1_STATUS, 2, link_status);
+	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
+						2, link_status);
 	if (retval)
 		return retval;
 
@@ -584,13 +578,13 @@  static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
 		return -EIO;
 	}
 
-	retval = exynos_dp_read_bytes_from_dpcd(dp,
-			DP_ADJUST_REQUEST_LANE0_1, 2, adjust_request);
+	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1,
+						2, adjust_request);
 	if (retval)
 		return retval;
 
-	retval = exynos_dp_read_byte_from_dpcd(dp,
-			DP_LANE_ALIGN_STATUS_UPDATED, &link_align);
+	retval = exynos_dp_read_byte_from_dpcd(dp, DP_LANE_ALIGN_STATUS_UPDATED,
+					       &link_align);
 	if (retval)
 		return retval;
 
@@ -629,17 +623,18 @@  static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
 	}
 
 	for (lane = 0; lane < lane_count; lane++)
-		exynos_dp_set_lane_link_training(dp,
-			dp->link_train.training_lane[lane], lane);
+		exynos_dp_set_lane_link_training(
+				dp, dp->link_train.training_lane[lane], lane);
 
 	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
-			lane_count, dp->link_train.training_lane);
+					       lane_count,
+					       dp->link_train.training_lane);
 
 	return retval;
 }
 
 static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp,
-					u8 *bandwidth)
+					   u8 *bandwidth)
 {
 	u8 data;
 
@@ -652,7 +647,7 @@  static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp,
 }
 
 static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp,
-					u8 *lane_count)
+					    u8 *lane_count)
 {
 	u8 data;
 
@@ -665,8 +660,8 @@  static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp,
 }
 
 static void exynos_dp_init_training(struct exynos_dp_device *dp,
-			enum link_lane_count_type max_lane,
-			enum link_rate_type max_rate)
+				    enum link_lane_count_type max_lane,
+				    enum link_rate_type max_rate)
 {
 	/*
 	 * MACRO_RST must be applied after the PLL_LOCK to avoid
@@ -679,7 +674,7 @@  static void exynos_dp_init_training(struct exynos_dp_device *dp,
 	exynos_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count);
 
 	if ((dp->link_train.link_rate != LINK_RATE_1_62GBPS) &&
-	   (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) {
+	    (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) {
 		dev_err(dp->dev, "Rx Max Link Rate is abnormal :%x !\n",
 			dp->link_train.link_rate);
 		dp->link_train.link_rate = LINK_RATE_1_62GBPS;
@@ -739,8 +734,7 @@  static int exynos_dp_sw_link_training(struct exynos_dp_device *dp)
 }
 
 static int exynos_dp_set_link_train(struct exynos_dp_device *dp,
-				u32 count,
-				u32 bwtype)
+				    u32 count, u32 bwtype)
 {
 	int i;
 	int retval;
@@ -828,21 +822,19 @@  static void exynos_dp_enable_scramble(struct exynos_dp_device *dp, bool enable)
 	if (enable) {
 		exynos_dp_enable_scrambling(dp);
 
-		exynos_dp_read_byte_from_dpcd(dp,
-			DP_TRAINING_PATTERN_SET,
-			&data);
-		exynos_dp_write_byte_to_dpcd(dp,
-			DP_TRAINING_PATTERN_SET,
-			(u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
+		exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
+					      &data);
+		exynos_dp_write_byte_to_dpcd(
+				dp, DP_TRAINING_PATTERN_SET,
+				(u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
 	} else {
 		exynos_dp_disable_scrambling(dp);
 
-		exynos_dp_read_byte_from_dpcd(dp,
-			DP_TRAINING_PATTERN_SET,
-			&data);
-		exynos_dp_write_byte_to_dpcd(dp,
-			DP_TRAINING_PATTERN_SET,
-			(u8)(data | DP_LINK_SCRAMBLING_DISABLE));
+		exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
+					      &data);
+		exynos_dp_write_byte_to_dpcd(
+				dp, DP_TRAINING_PATTERN_SET,
+				(u8)(data | DP_LINK_SCRAMBLING_DISABLE));
 	}
 }
 
@@ -913,7 +905,7 @@  static void exynos_dp_commit(struct drm_encoder *encoder)
 	}
 
 	ret = exynos_dp_set_link_train(dp, dp->video_info->lane_count,
-					dp->video_info->link_rate);
+				       dp->video_info->link_rate);
 	if (ret) {
 		dev_err(dp->dev, "unable to do link train\n");
 		return;
@@ -941,8 +933,8 @@  static void exynos_dp_commit(struct drm_encoder *encoder)
 	exynos_dp_start_video(dp);
 }
 
-static enum drm_connector_status exynos_dp_detect(
-				struct drm_connector *connector, bool force)
+static enum drm_connector_status
+exynos_dp_detect(struct drm_connector *connector, bool force)
 {
 	return connector_status_connected;
 }
@@ -990,8 +982,8 @@  static int exynos_dp_get_modes(struct drm_connector *connector)
 	return 1;
 }
 
-static struct drm_encoder *exynos_dp_best_encoder(
-			struct drm_connector *connector)
+static struct drm_encoder *
+exynos_dp_best_encoder(struct drm_connector *connector)
 {
 	struct exynos_dp_device *dp = ctx_from_connector(connector);
 
@@ -1005,7 +997,7 @@  static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
 
 /* returns the number of bridges attached */
 static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
-		struct drm_encoder *encoder)
+					struct drm_encoder *encoder)
 {
 	int ret;
 
@@ -1036,7 +1028,8 @@  static int exynos_dp_create_connector(struct drm_encoder *encoder)
 	connector->polled = DRM_CONNECTOR_POLL_HPD;
 
 	ret = drm_connector_init(dp->drm_dev, connector,
-			&exynos_dp_connector_funcs, DRM_MODE_CONNECTOR_eDP);
+				 &exynos_dp_connector_funcs,
+				 DRM_MODE_CONNECTOR_eDP);
 	if (ret) {
 		DRM_ERROR("Failed to initialize connector with drm\n");
 		return ret;
@@ -1139,8 +1132,8 @@  static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
 	struct device_node *dp_node = dev->of_node;
 	struct video_info *dp_video_config;
 
-	dp_video_config = devm_kzalloc(dev,
-				sizeof(*dp_video_config), GFP_KERNEL);
+	dp_video_config = devm_kzalloc(dev, sizeof(*dp_video_config),
+				       GFP_KERNEL);
 	if (!dp_video_config)
 		return ERR_PTR(-ENOMEM);
 
@@ -1154,37 +1147,37 @@  static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
 		of_property_read_bool(dp_node, "interlaced");
 
 	if (of_property_read_u32(dp_node, "samsung,color-space",
-				&dp_video_config->color_space)) {
+				 &dp_video_config->color_space)) {
 		dev_err(dev, "failed to get color-space\n");
 		return ERR_PTR(-EINVAL);
 	}
 
 	if (of_property_read_u32(dp_node, "samsung,dynamic-range",
-				&dp_video_config->dynamic_range)) {
+				 &dp_video_config->dynamic_range)) {
 		dev_err(dev, "failed to get dynamic-range\n");
 		return ERR_PTR(-EINVAL);
 	}
 
 	if (of_property_read_u32(dp_node, "samsung,ycbcr-coeff",
-				&dp_video_config->ycbcr_coeff)) {
+				 &dp_video_config->ycbcr_coeff)) {
 		dev_err(dev, "failed to get ycbcr-coeff\n");
 		return ERR_PTR(-EINVAL);
 	}
 
 	if (of_property_read_u32(dp_node, "samsung,color-depth",
-				&dp_video_config->color_depth)) {
+				 &dp_video_config->color_depth)) {
 		dev_err(dev, "failed to get color-depth\n");
 		return ERR_PTR(-EINVAL);
 	}
 
 	if (of_property_read_u32(dp_node, "samsung,link-rate",
-				&dp_video_config->link_rate)) {
+				 &dp_video_config->link_rate)) {
 		dev_err(dev, "failed to get link-rate\n");
 		return ERR_PTR(-EINVAL);
 	}
 
 	if (of_property_read_u32(dp_node, "samsung,lane-count",
-				&dp_video_config->lane_count)) {
+				 &dp_video_config->lane_count)) {
 		dev_err(dev, "failed to get lane-count\n");
 		return ERR_PTR(-EINVAL);
 	}
@@ -1197,7 +1190,7 @@  static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
 	int ret;
 
 	ret = of_get_videomode(dp->dev->of_node, &dp->priv.vm,
-			OF_USE_NATIVE_MODE);
+			       OF_USE_NATIVE_MODE);
 	if (ret) {
 		DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
 		return ret;
@@ -1294,7 +1287,7 @@  static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 	exynos_dp_init_dp(dp);
 
 	ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler,
-			irq_flags, "exynos-dp", dp);
+			       irq_flags, "exynos-dp", dp);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to request irq\n");
 		return ret;
@@ -1328,7 +1321,7 @@  static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 }
 
 static void exynos_dp_unbind(struct device *dev, struct device *master,
-				void *data)
+			     void *data)
 {
 	struct exynos_dp_device *dp = dev_get_drvdata(dev);
 
@@ -1347,7 +1340,7 @@  static int exynos_dp_probe(struct platform_device *pdev)
 	struct exynos_dp_device *dp;
 
 	dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
-				GFP_KERNEL);
+			  GFP_KERNEL);
 	if (!dp)
 		return -ENOMEM;
 
@@ -1369,8 +1362,9 @@  static int exynos_dp_probe(struct platform_device *pdev)
 			of_node_put(bridge_node);
 			if (!dp->bridge)
 				return -EPROBE_DEFER;
-		} else
+		} else {
 			return -EPROBE_DEFER;
+		}
 	}
 
 	return component_add(&pdev->dev, &exynos_dp_ops);
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
index e413b6f..71f2b86 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.h
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.h
@@ -179,8 +179,8 @@  void exynos_dp_config_interrupt(struct exynos_dp_device *dp);
 enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp);
 void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable);
 void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
-				enum analog_power_block block,
-				bool enable);
+				     enum analog_power_block block,
+				     bool enable);
 void exynos_dp_init_analog_func(struct exynos_dp_device *dp);
 void exynos_dp_init_hpd(struct exynos_dp_device *dp);
 enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp);
@@ -191,50 +191,50 @@  int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp);
 void exynos_dp_enable_sw_function(struct exynos_dp_device *dp);
 int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp);
 int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
-				unsigned int reg_addr,
-				unsigned char data);
+				 unsigned int reg_addr,
+				 unsigned char data);
 int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
-				unsigned int reg_addr,
-				unsigned char *data);
+				  unsigned int reg_addr,
+				  unsigned char *data);
 int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
-				unsigned int reg_addr,
-				unsigned int count,
-				unsigned char data[]);
+				  unsigned int reg_addr,
+				  unsigned int count,
+				  unsigned char data[]);
 int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
-				unsigned int reg_addr,
-				unsigned int count,
-				unsigned char data[]);
+				   unsigned int reg_addr,
+				   unsigned int count,
+				   unsigned char data[]);
 int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
 				unsigned int device_addr,
 				unsigned int reg_addr);
 int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
-				unsigned int device_addr,
-				unsigned int reg_addr,
-				unsigned int *data);
+				 unsigned int device_addr,
+				 unsigned int reg_addr,
+				 unsigned int *data);
 int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
-				unsigned int device_addr,
-				unsigned int reg_addr,
-				unsigned int count,
-				unsigned char edid[]);
+				  unsigned int device_addr,
+				  unsigned int reg_addr,
+				  unsigned int count,
+				  unsigned char edid[]);
 void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype);
 void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype);
 void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count);
 void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count);
 void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable);
 void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
-				 enum pattern_set pattern);
+				    enum pattern_set pattern);
 void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level);
 void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level);
 void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level);
 void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level);
 void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
-				u32 training_lane);
+				       u32 training_lane);
 void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
-				u32 training_lane);
+				       u32 training_lane);
 void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
-				u32 training_lane);
+				       u32 training_lane);
 void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
-				u32 training_lane);
+				       u32 training_lane);
 u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp);
 u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp);
 u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp);
@@ -245,9 +245,9 @@  void exynos_dp_init_video(struct exynos_dp_device *dp);
 void exynos_dp_set_video_color_format(struct exynos_dp_device *dp);
 int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp);
 void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
-			enum clock_recovery_m_value_type type,
-			u32 m_value,
-			u32 n_value);
+			       enum clock_recovery_m_value_type type,
+			       u32 m_value,
+			       u32 n_value);
 void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type);
 void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable);
 void exynos_dp_start_video(struct exynos_dp_device *dp);
diff --git a/drivers/gpu/drm/exynos/exynos_dp_reg.c b/drivers/gpu/drm/exynos/exynos_dp_reg.c
index c1f87a2..5aff19a 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_reg.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_reg.c
@@ -202,8 +202,8 @@  void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable)
 }
 
 void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
-				enum analog_power_block block,
-				bool enable)
+				     enum analog_power_block block,
+				     bool enable)
 {
 	u32 reg;
 
@@ -399,8 +399,8 @@  void exynos_dp_init_aux(struct exynos_dp_device *dp)
 	exynos_dp_reset_aux(dp);
 
 	/* Disable AUX transaction H/W retry */
-	reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0)|
-		AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+	reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0) |
+	      AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
 	writel(reg, dp->reg_base + EXYNOS_DP_AUX_HW_RETRY_CTL);
 
 	/* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
@@ -483,8 +483,8 @@  int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp)
 }
 
 int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
-				unsigned int reg_addr,
-				unsigned char data)
+				 unsigned int reg_addr,
+				 unsigned char data)
 {
 	u32 reg;
 	int i;
@@ -519,17 +519,16 @@  int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
 		retval = exynos_dp_start_aux_transaction(dp);
 		if (retval == 0)
 			break;
-		else
-			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
-				__func__);
+
+		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
 	}
 
 	return retval;
 }
 
 int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
-				unsigned int reg_addr,
-				unsigned char *data)
+				  unsigned int reg_addr,
+				  unsigned char *data)
 {
 	u32 reg;
 	int i;
@@ -560,9 +559,8 @@  int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
 		retval = exynos_dp_start_aux_transaction(dp);
 		if (retval == 0)
 			break;
-		else
-			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
-				__func__);
+
+		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
 	}
 
 	/* Read data buffer */
@@ -573,9 +571,9 @@  int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
 }
 
 int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
-				unsigned int reg_addr,
-				unsigned int count,
-				unsigned char data[])
+				  unsigned int reg_addr,
+				  unsigned int count,
+				  unsigned char data[])
 {
 	u32 reg;
 	unsigned int start_offset;
@@ -625,9 +623,9 @@  int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
 			retval = exynos_dp_start_aux_transaction(dp);
 			if (retval == 0)
 				break;
-			else
-				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
-					__func__);
+
+			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
+				__func__);
 		}
 
 		start_offset += cur_data_count;
@@ -637,9 +635,9 @@  int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
 }
 
 int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
-				unsigned int reg_addr,
-				unsigned int count,
-				unsigned char data[])
+				   unsigned int reg_addr,
+				   unsigned int count,
+				   unsigned char data[])
 {
 	u32 reg;
 	unsigned int start_offset;
@@ -683,9 +681,9 @@  int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
 			retval = exynos_dp_start_aux_transaction(dp);
 			if (retval == 0)
 				break;
-			else
-				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
-					__func__);
+
+			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
+				__func__);
 		}
 
 		for (cur_data_idx = 0; cur_data_idx < cur_data_count;
@@ -736,9 +734,9 @@  int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
 }
 
 int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
-				unsigned int device_addr,
-				unsigned int reg_addr,
-				unsigned int *data)
+				 unsigned int device_addr,
+				 unsigned int reg_addr,
+				 unsigned int *data)
 {
 	u32 reg;
 	int i;
@@ -767,9 +765,8 @@  int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
 		retval = exynos_dp_start_aux_transaction(dp);
 		if (retval == 0)
 			break;
-		else
-			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
-				__func__);
+
+		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
 	}
 
 	/* Read data */
@@ -780,10 +777,10 @@  int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
 }
 
 int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
-				unsigned int device_addr,
-				unsigned int reg_addr,
-				unsigned int count,
-				unsigned char edid[])
+				  unsigned int device_addr,
+				  unsigned int reg_addr,
+				  unsigned int count,
+				  unsigned char edid[])
 {
 	u32 reg;
 	unsigned int i, j;
@@ -807,8 +804,8 @@  int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
 			 * request without sending address
 			 */
 			if (!defer)
-				retval = exynos_dp_select_i2c_device(dp,
-						device_addr, reg_addr + i);
+				retval = exynos_dp_select_i2c_device(
+						dp, device_addr, reg_addr + i);
 			else
 				defer = 0;
 
@@ -819,24 +816,23 @@  int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
 				 * If Bit 3 is 0, I2C transaction.
 				 */
 				reg = AUX_LENGTH(16) |
-					AUX_TX_COMM_I2C_TRANSACTION |
-					AUX_TX_COMM_READ;
+				      AUX_TX_COMM_I2C_TRANSACTION |
+				      AUX_TX_COMM_READ;
 				writel(reg, dp->reg_base +
-					EXYNOS_DP_AUX_CH_CTL_1);
+				       EXYNOS_DP_AUX_CH_CTL_1);
 
 				/* Start AUX transaction */
 				retval = exynos_dp_start_aux_transaction(dp);
 				if (retval == 0)
 					break;
-				else
-					dev_dbg(dp->dev,
-						"%s: Aux Transaction fail!\n",
-						__func__);
+
+				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
+					__func__);
 			}
 			/* Check if Rx sends defer */
 			reg = readl(dp->reg_base + EXYNOS_DP_AUX_RX_COMM);
 			if (reg == AUX_RX_COMM_AUX_DEFER ||
-				reg == AUX_RX_COMM_I2C_DEFER) {
+			    reg == AUX_RX_COMM_I2C_DEFER) {
 				dev_err(dp->dev, "Defer: %d\n\n", reg);
 				defer = 1;
 			}
@@ -901,7 +897,7 @@  void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable)
 }
 
 void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
-				 enum pattern_set pattern)
+				    enum pattern_set pattern)
 {
 	u32 reg;
 
@@ -974,7 +970,7 @@  void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level)
 }
 
 void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
-					u32 training_lane)
+				       u32 training_lane)
 {
 	u32 reg;
 
@@ -983,7 +979,7 @@  void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
 }
 
 void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
-					u32 training_lane)
+				       u32 training_lane)
 {
 	u32 reg;
 
@@ -992,7 +988,7 @@  void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
 }
 
 void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
-					u32 training_lane)
+				       u32 training_lane)
 {
 	u32 reg;
 
@@ -1001,7 +997,7 @@  void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
 }
 
 void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
-					u32 training_lane)
+				       u32 training_lane)
 {
 	u32 reg;
 
@@ -1125,9 +1121,9 @@  int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp)
 }
 
 void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
-		enum clock_recovery_m_value_type type,
-		u32 m_value,
-		u32 n_value)
+			       enum clock_recovery_m_value_type type,
+			       u32 m_value,
+			       u32 n_value)
 {
 	u32 reg;
 
@@ -1221,7 +1217,7 @@  void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp)
 	u32 reg;
 
 	reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_1);
-	reg &= ~(MASTER_VID_FUNC_EN_N|SLAVE_VID_FUNC_EN_N);
+	reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
 	reg |= MASTER_VID_FUNC_EN_N;
 	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1);