[PATCH v9 1/4] mfd: Add Rockchip rk817 audio CODEC support

[Lee Jones]

On Wed, 05 May 2021, Chris Morgan wrote:

> From: Chris Morgan <macromorgan at hotmail.com>
> 
> Add rk817 codec support cell to rk808 mfd driver.
> 
> Tested-by: Maciej Matuszczyk <maccraft123mc at gmail.com>
> Signed-off-by: Chris Morgan <macromorgan at hotmail.com>

Nit: These should be chronological.

> ---
> Changes in v9:
>  - Add cover letter.
>  - Remove documentation for interrupt parent per Rob Herring's request.
>  - Remove unused MODULE_DEVICE_TABLE to fix a bug identified by kernel test
>    robot.
> Changes in v8:
>  - Added additional documentation for missing properties of #sound-dai-cells,
>    interrupt-parent, and wakeup-source for mfd documentation.
>  - Corrected order of elements descriptions in device tree documentation.
>  - Changed name of "mic-in-differential" to "rockchip,mic-in-differential".
>  - Changed name of sound card from "rockchip,rk817-codec" to "Analog".
>  - Removed unused resets and reset-names from the i2s1_2ch node.
> Changes in v7:
>  - Removed ifdef around register definitions for MFD.
>  - Replaced codec documentation with updates to MFD documentation.
>  - Reordered elements in example to comply with upstream rules.
>  - Added binding update back for Odroid Go Advance as requested.
>  - Submitting patches from gmail now.
> Changes in v6:
>  - Included additional project maintainers for correct subsystems.
>  - Removed unneeded compatible from DT documentation.
>  - Removed binding update for Odroid Go Advance (will do in seperate series).
> Changes in v5:
>  - Move register definitions from rk817_codec.h to main rk808.h register
>    definitions.
>  - Add volatile register for codec bits.
>  - Add default values for codec bits.
>  - Removed of_compatible from mtd driver (not necessary).
>  - Switched to using parent regmap instead of private regmap for codec.
> Changes in v4:
>  - Created set_pll() call.
>  - Created user visible gain control in mic.
>  - Check for return value of clk_prepare_enable().
>  - Removed duplicate clk_prepare_enable().
>  - Split DT documentation to separate commit.
> Changes in v3:
>  - Use DAPM macros to set audio path.
>  - Updated devicetree binding (as every rk817 has this codec chip).
>  - Changed documentation to yaml format.
>  - Split MFD changes to separate commit.
> Changes in v2:
>  - Fixed audio path registers to solve some bugs.
> 
>  drivers/mfd/rk808.c       | 85 +++++++++++++++++++++++++++++++++++++++
>  include/linux/mfd/rk808.h | 81 +++++++++++++++++++++++++++++++++++++
>  2 files changed, 166 insertions(+)
> 
> diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c
> index ad923dd4e007..9231209184e0 100644
> --- a/drivers/mfd/rk808.c
> +++ b/drivers/mfd/rk808.c
> @@ -65,6 +65,7 @@ static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg)
>  	switch (reg) {
>  	case RK817_SECONDS_REG ... RK817_WEEKS_REG:
>  	case RK817_RTC_STATUS_REG:
> +	case RK817_CODEC_DTOP_LPT_SRST:
>  	case RK817_INT_STS_REG0:
>  	case RK817_INT_STS_REG1:
>  	case RK817_INT_STS_REG2:
> @@ -163,6 +164,11 @@ static const struct mfd_cell rk817s[] = {
>  		.num_resources = ARRAY_SIZE(rk817_rtc_resources),
>  		.resources = &rk817_rtc_resources[0],
>  	},
> +#ifdef CONFIG_SND_SOC_RK817
> +	{
> +		.name = "rk817-codec",
> +	},
> +#endif

No #ifery please.

Just replace it with a comment.

If no associated driver exists, it just won't match/bind.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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