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[v7,5/9] i2c: rk3x: Change SoC data to not use array

Message ID 1462372418-6349-1-git-send-email-david.wu@rock-chips.com (mailing list archive)
State New, archived
Headers show

Commit Message

David Wu May 4, 2016, 2:33 p.m. UTC
Signed-off-by: David Wu <david.wu@rock-chips.com>
---
 drivers/i2c/busses/i2c-rk3x.c | 38 ++++++++++++++++++++++++++++++--------
 1 file changed, 30 insertions(+), 8 deletions(-)

Comments

Heiko Stübner May 5, 2016, 9:36 p.m. UTC | #1
Am Mittwoch, 4. Mai 2016, 22:33:38 schrieb David Wu:
> Signed-off-by: David Wu <david.wu@rock-chips.com>

that makes the code look nicer (and of course prepares for you further 
changes), so

Reviewed-by: Heiko Stuebner <heiko@sntech.de>

> ---
>  drivers/i2c/busses/i2c-rk3x.c | 38 ++++++++++++++++++++++++++++++--------
>  1 file changed, 30 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
> index 0838fcf..9686c81 100644
> --- a/drivers/i2c/busses/i2c-rk3x.c
> +++ b/drivers/i2c/busses/i2c-rk3x.c
> @@ -867,17 +867,39 @@ static const struct i2c_algorithm rk3x_i2c_algorithm =
> { .functionality		= rk3x_i2c_func,
>  };
> 
> -static struct rk3x_i2c_soc_data soc_data[3] = {
> -	{ .grf_offset = 0x154 }, /* rk3066 */
> -	{ .grf_offset = 0x0a4 }, /* rk3188 */
> -	{ .grf_offset = -1 },    /* no I2C switching needed */
> +static const struct rk3x_i2c_soc_data rk3066_soc_data = {
> +	.grf_offset = 0x154,
> +};
> +
> +static const struct rk3x_i2c_soc_data rk3188_soc_data = {
> +	.grf_offset = 0x0a4,
> +};
> +
> +static const struct rk3x_i2c_soc_data rk3228_soc_data = {
> +	.grf_offset = -1,
> +};
> +
> +static const struct rk3x_i2c_soc_data rk3288_soc_data = {
> +	.grf_offset = -1,
>  };
> 
>  static const struct of_device_id rk3x_i2c_match[] = {
> -	{ .compatible = "rockchip,rk3066-i2c", .data = (void *)&soc_data[0] },
> -	{ .compatible = "rockchip,rk3188-i2c", .data = (void *)&soc_data[1] },
> -	{ .compatible = "rockchip,rk3228-i2c", .data = (void *)&soc_data[2] },
> -	{ .compatible = "rockchip,rk3288-i2c", .data = (void *)&soc_data[2] },
> +	{
> +		.compatible = "rockchip,rk3066-i2c",
> +		.data = (void *)&rk3066_soc_data
> +	},
> +	{
> +		.compatible = "rockchip,rk3188-i2c",
> +		.data = (void *)&rk3188_soc_data
> +	},
> +	{
> +		.compatible = "rockchip,rk3228-i2c",
> +		.data = (void *)&rk3228_soc_data
> +	},
> +	{
> +		.compatible = "rockchip,rk3288-i2c",
> +		.data = (void *)&rk3288_soc_data
> +	},
>  	{},
>  };
>  MODULE_DEVICE_TABLE(of, rk3x_i2c_match);
Doug Anderson May 5, 2016, 10:57 p.m. UTC | #2
Hi,

On Wed, May 4, 2016 at 7:33 AM, David Wu <david.wu@rock-chips.com> wrote:
> Signed-off-by: David Wu <david.wu@rock-chips.com>

nit: $SUBJECT should probably mention that this also constifies the SoC data.


Again, needs description, like maybe:

Specifying the i2c SoC data in an array provides very little benefit and
gets unwieldly / confusing as the array grows since the next bit of code
needs to refer to elements in the array by their raw integral index.

Let's just create a single 'static const' structure for each SoC so that
we can refer to these structures by ID.


IMHO this can be applied any time independent of any earlier patches.

Suggested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
diff mbox

Patch

diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
index 0838fcf..9686c81 100644
--- a/drivers/i2c/busses/i2c-rk3x.c
+++ b/drivers/i2c/busses/i2c-rk3x.c
@@ -867,17 +867,39 @@  static const struct i2c_algorithm rk3x_i2c_algorithm = {
 	.functionality		= rk3x_i2c_func,
 };
 
-static struct rk3x_i2c_soc_data soc_data[3] = {
-	{ .grf_offset = 0x154 }, /* rk3066 */
-	{ .grf_offset = 0x0a4 }, /* rk3188 */
-	{ .grf_offset = -1 },    /* no I2C switching needed */
+static const struct rk3x_i2c_soc_data rk3066_soc_data = {
+	.grf_offset = 0x154,
+};
+
+static const struct rk3x_i2c_soc_data rk3188_soc_data = {
+	.grf_offset = 0x0a4,
+};
+
+static const struct rk3x_i2c_soc_data rk3228_soc_data = {
+	.grf_offset = -1,
+};
+
+static const struct rk3x_i2c_soc_data rk3288_soc_data = {
+	.grf_offset = -1,
 };
 
 static const struct of_device_id rk3x_i2c_match[] = {
-	{ .compatible = "rockchip,rk3066-i2c", .data = (void *)&soc_data[0] },
-	{ .compatible = "rockchip,rk3188-i2c", .data = (void *)&soc_data[1] },
-	{ .compatible = "rockchip,rk3228-i2c", .data = (void *)&soc_data[2] },
-	{ .compatible = "rockchip,rk3288-i2c", .data = (void *)&soc_data[2] },
+	{
+		.compatible = "rockchip,rk3066-i2c",
+		.data = (void *)&rk3066_soc_data
+	},
+	{
+		.compatible = "rockchip,rk3188-i2c",
+		.data = (void *)&rk3188_soc_data
+	},
+	{
+		.compatible = "rockchip,rk3228-i2c",
+		.data = (void *)&rk3228_soc_data
+	},
+	{
+		.compatible = "rockchip,rk3288-i2c",
+		.data = (void *)&rk3288_soc_data
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, rk3x_i2c_match);