[v5,1/7] drm/rockchip: vop: initialize registers directly
diff mbox

Message ID 1500518603-30486-1-git-send-email-mark.yao@rock-chips.com
State New
Headers show

Commit Message

yao mark July 20, 2017, 2:43 a.m. UTC
At present we are using init_table to initialize some
registers, but the Register init table use un-document define,
it is unreadable, and sometimes we only want to update tiny
bits, init table method is not friendly, it's diffcult to
reuse for difference chips.

To make it clean, initialize registers directly, and drops
init_table mechanism out.

Changes in v3:
- Explain more in details

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c |  6 ++--
 drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 10 ++-----
 drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 43 +++--------------------------
 3 files changed, 10 insertions(+), 49 deletions(-)

Comments

Heiko Stuebner July 25, 2017, 10:36 p.m. UTC | #1
Hi Mark,

Am Donnerstag, 20. Juli 2017, 10:43:22 CEST schrieb Mark Yao:
> At present we are using init_table to initialize some
> registers, but the Register init table use un-document define,
> it is unreadable, and sometimes we only want to update tiny
> bits, init table method is not friendly, it's diffcult to
> reuse for difference chips.
> 
> To make it clean, initialize registers directly, and drops
> init_table mechanism out.
> 
> Changes in v3:
> - Explain more in details
> 
> Signed-off-by: Mark Yao <mark.yao@rock-chips.com>

[...]

> diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> index bafd698..00e9d79 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> @@ -127,13 +127,7 @@
>  	.cfg_done = VOP_REG(RK3036_REG_CFG_DONE, 0x1, 0),
>  };
>  
> -static const struct vop_reg_data rk3036_vop_init_reg_table[] = {
> -	{RK3036_DSP_CTRL1, 0x00000000},
> -};
> -
>  static const struct vop_data rk3036_vop = {
> -	.init_table = rk3036_vop_init_reg_table,
> -	.table_size = ARRAY_SIZE(rk3036_vop_init_reg_table),
>  	.ctrl = &rk3036_ctrl_data,
>  	.intr = &rk3036_intr,
>  	.win = rk3036_vop_win_data,

This seems to break vop initialization on my rk3036 kylin board.

Before, kylin was able to bring output to the hdmi but with this
patch applied this stops working. As the init-value is to zero it seems
there is still something turned on, that should be turned off instead.

rk3288 seems to stay in working condition though.


Heiko
yao mark July 26, 2017, 12:59 a.m. UTC | #2
On 2017年07月26日 06:36, Heiko Stuebner wrote:
> Hi Mark,
>
> Am Donnerstag, 20. Juli 2017, 10:43:22 CEST schrieb Mark Yao:
>> At present we are using init_table to initialize some
>> registers, but the Register init table use un-document define,
>> it is unreadable, and sometimes we only want to update tiny
>> bits, init table method is not friendly, it's diffcult to
>> reuse for difference chips.
>>
>> To make it clean, initialize registers directly, and drops
>> init_table mechanism out.
>>
>> Changes in v3:
>> - Explain more in details
>>
>> Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
> [...]
>
>> diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
>> index bafd698..00e9d79 100644
>> --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
>> +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
>> @@ -127,13 +127,7 @@
>>   	.cfg_done = VOP_REG(RK3036_REG_CFG_DONE, 0x1, 0),
>>   };
>>   
>> -static const struct vop_reg_data rk3036_vop_init_reg_table[] = {
>> -	{RK3036_DSP_CTRL1, 0x00000000},
>> -};
>> -
>>   static const struct vop_data rk3036_vop = {
>> -	.init_table = rk3036_vop_init_reg_table,
>> -	.table_size = ARRAY_SIZE(rk3036_vop_init_reg_table),
>>   	.ctrl = &rk3036_ctrl_data,
>>   	.intr = &rk3036_intr,
>>   	.win = rk3036_vop_win_data,
> This seems to break vop initialization on my rk3036 kylin board.
>
> Before, kylin was able to bring output to the hdmi but with this
> patch applied this stops working. As the init-value is to zero it seems
> there is still something turned on, that should be turned off instead.
>
> rk3288 seems to stay in working condition though.
>
>
> Heiko
>
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip
>
>
>
Hi Heiko

Thanks for your testing on rk3036 board.

I research the init table on rk3036, the dsp_blank reset value is 1, we need set the register to zero.

So I think not working problem can be fixed by following change:

     drivers/gpu/drm/rockchip/rockchip_vop_reg.c:
     static const struct vop_ctrl rk3036_ctrl_data = {
             .standby = VOP_REG(RK3036_SYS_CTRL, 0x1, 30),
     +       .dsp_blank = VOP_REG(RK3036_DSP_CTRL1, 0x1, 24),
             .out_mode = VOP_REG(RK3036_DSP_CTRL0, 0xf, 0),
             .pin_pol = VOP_REG(RK3036_DSP_CTRL0, 0xf, 4),
             .htotal_pw = VOP_REG(RK3036_DSP_HTOTAL_HS_END, 0x1fff1fff, 0),

Patch
diff mbox

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 5d45033..81164d6 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1395,7 +1395,6 @@  static void vop_destroy_crtc(struct vop *vop)
 static int vop_initial(struct vop *vop)
 {
 	const struct vop_data *vop_data = vop->data;
-	const struct vop_reg_data *init_table = vop_data->init_table;
 	struct reset_control *ahb_rst;
 	int i, ret;
 
@@ -1455,13 +1454,14 @@  static int vop_initial(struct vop *vop)
 
 	memcpy(vop->regsbak, vop->regs, vop->len);
 
-	for (i = 0; i < vop_data->table_size; i++)
-		vop_writel(vop, init_table[i].offset, init_table[i].value);
+	VOP_CTRL_SET(vop, global_regdone_en, 1);
+	VOP_CTRL_SET(vop, dsp_blank, 0);
 
 	for (i = 0; i < vop_data->win_size; i++) {
 		const struct vop_win_data *win = &vop_data->win[i];
 
 		VOP_WIN_SET(vop, win, enable, 0);
+		VOP_WIN_SET(vop, win, gate, 1);
 	}
 
 	vop_cfg_done(vop);
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
index 9979fd0..084d3b2 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
@@ -24,11 +24,6 @@  enum vop_data_format {
 	VOP_FMT_YUV444SP,
 };
 
-struct vop_reg_data {
-	uint32_t offset;
-	uint32_t value;
-};
-
 struct vop_reg {
 	uint32_t offset;
 	uint32_t shift;
@@ -46,6 +41,7 @@  struct vop_ctrl {
 	struct vop_reg hdmi_en;
 	struct vop_reg mipi_en;
 	struct vop_reg dp_en;
+	struct vop_reg dsp_blank;
 	struct vop_reg out_mode;
 	struct vop_reg dither_down;
 	struct vop_reg dither_up;
@@ -65,6 +61,7 @@  struct vop_ctrl {
 
 	struct vop_reg line_flag_num[2];
 
+	struct vop_reg global_regdone_en;
 	struct vop_reg cfg_done;
 };
 
@@ -115,6 +112,7 @@  struct vop_win_phy {
 	uint32_t nformats;
 
 	struct vop_reg enable;
+	struct vop_reg gate;
 	struct vop_reg format;
 	struct vop_reg rb_swap;
 	struct vop_reg act_info;
@@ -136,8 +134,6 @@  struct vop_win_data {
 };
 
 struct vop_data {
-	const struct vop_reg_data *init_table;
-	unsigned int table_size;
 	const struct vop_ctrl *ctrl;
 	const struct vop_intr *intr;
 	const struct vop_win_data *win;
diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
index bafd698..00e9d79 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
@@ -127,13 +127,7 @@ 
 	.cfg_done = VOP_REG(RK3036_REG_CFG_DONE, 0x1, 0),
 };
 
-static const struct vop_reg_data rk3036_vop_init_reg_table[] = {
-	{RK3036_DSP_CTRL1, 0x00000000},
-};
-
 static const struct vop_data rk3036_vop = {
-	.init_table = rk3036_vop_init_reg_table,
-	.table_size = ARRAY_SIZE(rk3036_vop_init_reg_table),
 	.ctrl = &rk3036_ctrl_data,
 	.intr = &rk3036_intr,
 	.win = rk3036_vop_win_data,
@@ -193,7 +187,8 @@ 
 static const struct vop_win_phy rk3288_win23_data = {
 	.data_formats = formats_win_lite,
 	.nformats = ARRAY_SIZE(formats_win_lite),
-	.enable = VOP_REG(RK3288_WIN2_CTRL0, 0x1, 0),
+	.enable = VOP_REG(RK3288_WIN2_CTRL0, 0x1, 4),
+	.gate = VOP_REG(RK3288_WIN2_CTRL0, 0x1, 0),
 	.format = VOP_REG(RK3288_WIN2_CTRL0, 0x7, 1),
 	.rb_swap = VOP_REG(RK3288_WIN2_CTRL0, 0x1, 12),
 	.dsp_info = VOP_REG(RK3288_WIN2_DSP_INFO0, 0x0fff0fff, 0),
@@ -215,6 +210,7 @@ 
 	.dither_down = VOP_REG(RK3288_DSP_CTRL1, 0xf, 1),
 	.dither_up = VOP_REG(RK3288_DSP_CTRL1, 0x1, 6),
 	.data_blank = VOP_REG(RK3288_DSP_CTRL0, 0x1, 19),
+	.dsp_blank = VOP_REG(RK3288_DSP_CTRL0, 0x3, 18),
 	.out_mode = VOP_REG(RK3288_DSP_CTRL0, 0xf, 0),
 	.pin_pol = VOP_REG(RK3288_DSP_CTRL0, 0xf, 4),
 	.htotal_pw = VOP_REG(RK3288_DSP_HTOTAL_HS_END, 0x1fff1fff, 0),
@@ -224,22 +220,10 @@ 
 	.hpost_st_end = VOP_REG(RK3288_POST_DSP_HACT_INFO, 0x1fff1fff, 0),
 	.vpost_st_end = VOP_REG(RK3288_POST_DSP_VACT_INFO, 0x1fff1fff, 0),
 	.line_flag_num[0] = VOP_REG(RK3288_INTR_CTRL0, 0x1fff, 12),
+	.global_regdone_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 11),
 	.cfg_done = VOP_REG(RK3288_REG_CFG_DONE, 0x1, 0),
 };
 
-static const struct vop_reg_data rk3288_init_reg_table[] = {
-	{RK3288_SYS_CTRL, 0x00c00000},
-	{RK3288_DSP_CTRL0, 0x00000000},
-	{RK3288_WIN0_CTRL0, 0x00000080},
-	{RK3288_WIN1_CTRL0, 0x00000080},
-	/* TODO: Win2/3 support multiple area function, but we haven't found
-	 * a suitable way to use it yet, so let's just use them as other windows
-	 * with only area 0 enabled.
-	 */
-	{RK3288_WIN2_CTRL0, 0x00000010},
-	{RK3288_WIN3_CTRL0, 0x00000010},
-};
-
 /*
  * Note: rk3288 has a dedicated 'cursor' window, however, that window requires
  * special support to get alpha blending working.  For now, just use overlay
@@ -273,8 +257,6 @@ 
 };
 
 static const struct vop_data rk3288_vop = {
-	.init_table = rk3288_init_reg_table,
-	.table_size = ARRAY_SIZE(rk3288_init_reg_table),
 	.feature = VOP_FEATURE_OUTPUT_RGB10,
 	.intr = &rk3288_vop_intr,
 	.ctrl = &rk3288_ctrl_data,
@@ -328,22 +310,7 @@ 
 	.clear = VOP_REG_MASK(RK3399_INTR_CLEAR0, 0xffff, 0),
 };
 
-static const struct vop_reg_data rk3399_init_reg_table[] = {
-	{RK3399_SYS_CTRL, 0x2000f800},
-	{RK3399_DSP_CTRL0, 0x00000000},
-	{RK3399_WIN0_CTRL0, 0x00000080},
-	{RK3399_WIN1_CTRL0, 0x00000080},
-	/* TODO: Win2/3 support multiple area function, but we haven't found
-	 * a suitable way to use it yet, so let's just use them as other windows
-	 * with only area 0 enabled.
-	 */
-	{RK3399_WIN2_CTRL0, 0x00000010},
-	{RK3399_WIN3_CTRL0, 0x00000010},
-};
-
 static const struct vop_data rk3399_vop_big = {
-	.init_table = rk3399_init_reg_table,
-	.table_size = ARRAY_SIZE(rk3399_init_reg_table),
 	.feature = VOP_FEATURE_OUTPUT_RGB10,
 	.intr = &rk3399_vop_intr,
 	.ctrl = &rk3399_ctrl_data,
@@ -362,8 +329,6 @@ 
 };
 
 static const struct vop_data rk3399_vop_lit = {
-	.init_table = rk3399_init_reg_table,
-	.table_size = ARRAY_SIZE(rk3399_init_reg_table),
 	.intr = &rk3399_vop_intr,
 	.ctrl = &rk3399_ctrl_data,
 	/*