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Subject: Re: [PATCH v2 3/3] pinctrl: qcom: Add SC7280 lpass pin configuration
To:     Srinivasa Rao Mandadapu <srivasam@codeaurora.org>,
        agross@kernel.org, bjorn.andersson@linaro.org, lgirdwood@gmail.com,
        broonie@kernel.org, robh+dt@kernel.org, plai@codeaurora.org,
        bgoswami@codeaurora.org, perex@perex.cz, tiwai@suse.com,
        rohitkr@codeaurora.org, linux-arm-msm@vger.kernel.org,
        alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, swboyd@chromium.org,
        judyhsiao@chromium.org
Cc:     Venkata Prasad Potturu <potturu@codeaurora.org>
References: <1635342097-2726-1-git-send-email-srivasam@codeaurora.org>
 <1635342097-2726-4-git-send-email-srivasam@codeaurora.org>
From:   Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Message-ID: <3a05fc62-a060-3257-ad54-53e376763fe3@linaro.org>
Date:   Wed, 3 Nov 2021 11:22:20 +0000
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Thanks Srinivasa for the patches.

On 27/10/2021 14:41, Srinivasa Rao Mandadapu wrote:
> Update pin control support for SC7280 LPASS LPI.
> 
> Signed-off-by: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>
> Co-developed-by: Venkata Prasad Potturu <potturu@codeaurora.org>
> Signed-off-by: Venkata Prasad Potturu <potturu@codeaurora.org>
> ---
>   drivers/pinctrl/qcom/pinctrl-lpass-lpi.c | 40 ++++++++++++++++++++++++++++++++
>   1 file changed, 40 insertions(+)
> 
> diff --git a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
> index 0bd0c16..17a05a6 100644
> --- a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
> +++ b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
> @@ -122,6 +122,7 @@ static const struct pinctrl_pin_desc lpass_lpi_pins[] = {
>   	PINCTRL_PIN(11, "gpio11"),
>   	PINCTRL_PIN(12, "gpio12"),
>   	PINCTRL_PIN(13, "gpio13"),
> +	PINCTRL_PIN(14, "gpio14"),

I see your point in first patch making these names more generic, but 
this is not really going to work, as the above line just added new pin 
for sm8250 even though it really only has 0-13 pins.

I think it would be more clear if you could just make a dedicated 
structures for sc7280. Simillar comments apply for other changes too.

Other than that the patch looks good to me.

--srini

>   };
>   
>   enum lpass_lpi_functions {
> @@ -136,6 +137,7 @@ enum lpass_lpi_functions {
>   	LPI_MUX_i2s1_ws,
>   	LPI_MUX_i2s2_clk,
>   	LPI_MUX_i2s2_data,
> +	LPI_MUX_sc7280_i2s2_data,
>   	LPI_MUX_i2s2_ws,
>   	LPI_MUX_qua_mi2s_data,
>   	LPI_MUX_qua_mi2s_sclk,
> @@ -144,6 +146,7 @@ enum lpass_lpi_functions {
>   	LPI_MUX_swr_rx_data,
>   	LPI_MUX_swr_tx_clk,
>   	LPI_MUX_swr_tx_data,
> +	LPI_MUX_sc7280_swr_tx_data,
>   	LPI_MUX_wsa_swr_clk,
>   	LPI_MUX_wsa_swr_data,
>   	LPI_MUX_gpio,
> @@ -164,8 +167,11 @@ static const unsigned int gpio10_pins[] = { 10 };
>   static const unsigned int gpio11_pins[] = { 11 };
>   static const unsigned int gpio12_pins[] = { 12 };
>   static const unsigned int gpio13_pins[] = { 13 };
> +static const unsigned int gpio14_pins[] = { 14 };
> +
>   static const char * const swr_tx_clk_groups[] = { "gpio0" };
>   static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio5" };
> +static const char * const sc7280_swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio14" };
>   static const char * const swr_rx_clk_groups[] = { "gpio3" };
>   static const char * const swr_rx_data_groups[] = { "gpio4", "gpio5" };
>   static const char * const dmic1_clk_groups[] = { "gpio6" };
> @@ -185,6 +191,7 @@ static const char * const i2s1_data_groups[] = { "gpio8", "gpio9" };
>   static const char * const wsa_swr_clk_groups[] = { "gpio10" };
>   static const char * const wsa_swr_data_groups[] = { "gpio11" };
>   static const char * const i2s2_data_groups[] = { "gpio12", "gpio12" };
> +static const char * const sc7280_i2s2_data_groups[] = { "gpio12", "gpio13" };
>   
>   static const struct lpi_pingroup sm8250_groups[] = {
>   	LPI_PINGROUP(0, 0, swr_tx_clk, qua_mi2s_sclk, _, _),
> @@ -203,6 +210,24 @@ static const struct lpi_pingroup sm8250_groups[] = {
>   	LPI_PINGROUP(13, NO_SLEW, dmic3_data, i2s2_data, _, _),
>   };
>   
> +static const struct lpi_pingroup sc7280_groups[] = {
> +	LPI_PINGROUP(0, 0, swr_tx_clk, qua_mi2s_sclk, _, _),
> +	LPI_PINGROUP(1, 2, swr_tx_data, qua_mi2s_ws, _, _),
> +	LPI_PINGROUP(2, 4, swr_tx_data, qua_mi2s_data, _, _),
> +	LPI_PINGROUP(3, 8, swr_rx_clk, qua_mi2s_data, _, _),
> +	LPI_PINGROUP(4, 10, swr_rx_data, qua_mi2s_data, _, _),
> +	LPI_PINGROUP(5, 12, swr_rx_data, _, _, _),
> +	LPI_PINGROUP(6, NO_SLEW, dmic1_clk, i2s1_clk, _,  _),
> +	LPI_PINGROUP(7, NO_SLEW, dmic1_data, i2s1_ws, _, _),
> +	LPI_PINGROUP(8, NO_SLEW, dmic2_clk, i2s1_data, _, _),
> +	LPI_PINGROUP(9, NO_SLEW, dmic2_data, i2s1_data, _, _),
> +	LPI_PINGROUP(10, 16, i2s2_clk, wsa_swr_clk, _, _),
> +	LPI_PINGROUP(11, 18, i2s2_ws, wsa_swr_data, _, _),
> +	LPI_PINGROUP(12, NO_SLEW, dmic3_clk, sc7280_i2s2_data, _, _),
> +	LPI_PINGROUP(13, NO_SLEW, dmic3_data, sc7280_i2s2_data, _, _),
> +	LPI_PINGROUP(14, 6, sc7280_swr_tx_data, _, _, _),
> +};
> +
>   static const struct lpi_function lpass_functions[] = {
>   	LPI_FUNCTION(dmic1_clk),
>   	LPI_FUNCTION(dmic1_data),
> @@ -215,6 +240,7 @@ static const struct lpi_function lpass_functions[] = {
>   	LPI_FUNCTION(i2s1_ws),
>   	LPI_FUNCTION(i2s2_clk),
>   	LPI_FUNCTION(i2s2_data),
> +	LPI_FUNCTION(sc7280_i2s2_data),
>   	LPI_FUNCTION(i2s2_ws),
>   	LPI_FUNCTION(qua_mi2s_data),
>   	LPI_FUNCTION(qua_mi2s_sclk),
> @@ -223,6 +249,7 @@ static const struct lpi_function lpass_functions[] = {
>   	LPI_FUNCTION(swr_rx_data),
>   	LPI_FUNCTION(swr_tx_clk),
>   	LPI_FUNCTION(swr_tx_data),
> +	LPI_FUNCTION(sc7280_swr_tx_data),
>   	LPI_FUNCTION(wsa_swr_clk),
>   	LPI_FUNCTION(wsa_swr_data),
>   };
> @@ -236,6 +263,15 @@ static struct lpi_pinctrl_variant_data sm8250_lpi_data = {
>   	.nfunctions = ARRAY_SIZE(lpass_functions),
>   };
>   
> +static const struct lpi_pinctrl_variant_data sc7280_lpi_data = {
> +	.pins = lpass_lpi_pins,
> +	.npins = ARRAY_SIZE(lpass_lpi_pins),
> +	.groups = sc7280_groups,
> +	.ngroups = ARRAY_SIZE(sc7280_groups),
> +	.functions = lpass_functions,
> +	.nfunctions = ARRAY_SIZE(lpass_functions),
> +};
> +
>   static int lpi_gpio_read(struct lpi_pinctrl *state, unsigned int pin,
>   			 unsigned int addr)
>   {
> @@ -677,6 +713,10 @@ static const struct of_device_id lpi_pinctrl_of_match[] = {
>   	       .compatible = "qcom,sm8250-lpass-lpi-pinctrl",
>   	       .data = &sm8250_lpi_data,
>   	},
> +	{
> +	       .compatible = "qcom,sc7280-lpass-lpi-pinctrl",
> +	       .data = &sc7280_lpi_data,
> +	},
>   	{ }
>   };
>   MODULE_DEVICE_TABLE(of, lpi_pinctrl_of_match);
>