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From:   Arnd Bergmann <arnd@arndb.de>
To:     Daniel Mack <daniel@zonque.org>,
        Haojian Zhuang <haojian.zhuang@gmail.com>,
        Robert Jarzmik <robert.jarzmik@free.fr>
Cc:     linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Linus Walleij <linus.walleij@linaro.org>,
        Arnd Bergmann <arnd@arndb.de>, Mark Brown <broonie@kernel.org>,
        alsa-devel@alsa-project.org
Subject: [PATCH 18/46] ARM: pxa: corgi: use gpio descriptors for audio
Date:   Fri, 18 Oct 2019 17:41:33 +0200
Message-Id: <20191018154201.1276638-18-arnd@arndb.de>
In-Reply-To: <20191018154052.1276506-1-arnd@arndb.de>
References: <20191018154052.1276506-1-arnd@arndb.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

The audio driver should not use a hardwired gpio number
from the header. Change it to use a lookup table.

Cc: Mark Brown <broonie@kernel.org>
Cc: alsa-devel@alsa-project.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/mach-pxa/corgi.c                    | 22 ++++++++++-
 arch/arm/mach-pxa/{include/mach => }/corgi.h |  2 +-
 arch/arm/mach-pxa/corgi_pm.c                 |  2 +-
 sound/soc/pxa/corgi.c                        | 40 +++++++++++++-------
 4 files changed, 50 insertions(+), 16 deletions(-)
 rename arch/arm/mach-pxa/{include/mach => }/corgi.h (98%)

diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index e9743ebbee86..0ff8e8140513 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -49,7 +49,7 @@
 #include <linux/platform_data/irda-pxaficp.h>
 #include <linux/platform_data/mmc-pxamci.h>
 #include "udc.h"
-#include <mach/corgi.h>
+#include "corgi.h"
 #include "sharpsl_pm.h"
 
 #include <asm/mach/sharpsl_param.h>
@@ -472,6 +472,25 @@ static struct platform_device corgiled_device = {
 	},
 };
 
+static struct gpiod_lookup_table corgi_audio_gpio_table = {
+	.dev_id = "corgi-audio",
+	.table = {
+		GPIO_LOOKUP("sharp-scoop",
+			    CORGI_GPIO_MUTE_L - CORGI_SCOOP_GPIO_BASE,
+			    "mute-l", GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP("sharp-scoop",
+			    CORGI_GPIO_MUTE_R - CORGI_SCOOP_GPIO_BASE,
+			    "mute-r", GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP("sharp-scoop",
+			    CORGI_GPIO_APM_ON - CORGI_SCOOP_GPIO_BASE,
+			    "apm-on", GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP("sharp-scoop",
+			    CORGI_GPIO_MIC_BIAS - CORGI_SCOOP_GPIO_BASE,
+			    "mic-bias", GPIO_ACTIVE_HIGH),
+		{ },
+	},
+};
+
 /*
  * Corgi Audio
  */
@@ -740,6 +759,7 @@ static void __init corgi_init(void)
 
  	pxa_set_udc_info(&udc_info);
 	gpiod_add_lookup_table(&corgi_mci_gpio_table);
+	gpiod_add_lookup_table(&corgi_audio_gpio_table);
 	pxa_set_mci_info(&corgi_mci_platform_data);
 	pxa_set_ficp_info(&corgi_ficp_platform_data);
 	pxa_set_i2c_info(NULL);
diff --git a/arch/arm/mach-pxa/include/mach/corgi.h b/arch/arm/mach-pxa/corgi.h
similarity index 98%
rename from arch/arm/mach-pxa/include/mach/corgi.h
rename to arch/arm/mach-pxa/corgi.h
index b565ca7b8cda..fe2fcf6532b9 100644
--- a/arch/arm/mach-pxa/include/mach/corgi.h
+++ b/arch/arm/mach-pxa/corgi.h
@@ -9,7 +9,7 @@
 #ifndef __ASM_ARCH_CORGI_H
 #define __ASM_ARCH_CORGI_H  1
 
-#include "irqs.h" /* PXA_NR_BUILTIN_GPIO */
+#include <mach/irqs.h> /* PXA_NR_BUILTIN_GPIO */
 
 /*
  * Corgi (Non Standard) GPIO Definitions
diff --git a/arch/arm/mach-pxa/corgi_pm.c b/arch/arm/mach-pxa/corgi_pm.c
index ff1ac9bf37cb..c6ddfc737644 100644
--- a/arch/arm/mach-pxa/corgi_pm.c
+++ b/arch/arm/mach-pxa/corgi_pm.c
@@ -20,7 +20,7 @@
 #include <asm/irq.h>
 #include <asm/mach-types.h>
 
-#include <mach/corgi.h>
+#include "corgi.h"
 #include <mach/pxa2xx-regs.h>
 #include "sharpsl_pm.h"
 
diff --git a/sound/soc/pxa/corgi.c b/sound/soc/pxa/corgi.c
index 47647a1c3124..9db5a3d3606e 100644
--- a/sound/soc/pxa/corgi.c
+++ b/sound/soc/pxa/corgi.c
@@ -21,7 +21,6 @@
 #include <sound/soc.h>
 
 #include <asm/mach-types.h>
-#include <mach/corgi.h>
 #include <linux/platform_data/asoc-pxa.h>
 
 #include "../codecs/wm8731.h"
@@ -41,6 +40,8 @@
 static int corgi_jack_func;
 static int corgi_spk_func;
 
+struct gpio_desc *gpiod_mute_l, *gpiod_mute_r, *gpiod_apm_on, *gpiod_mic_bias;
+
 static void corgi_ext_control(struct snd_soc_dapm_context *dapm)
 {
 	snd_soc_dapm_mutex_lock(dapm);
@@ -49,8 +50,8 @@ static void corgi_ext_control(struct snd_soc_dapm_context *dapm)
 	switch (corgi_jack_func) {
 	case CORGI_HP:
 		/* set = unmute headphone */
-		gpio_set_value(CORGI_GPIO_MUTE_L, 1);
-		gpio_set_value(CORGI_GPIO_MUTE_R, 1);
+		gpiod_set_value(gpiod_mute_l, 1);
+		gpiod_set_value(gpiod_mute_r, 1);
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
@@ -58,24 +59,24 @@ static void corgi_ext_control(struct snd_soc_dapm_context *dapm)
 		break;
 	case CORGI_MIC:
 		/* reset = mute headphone */
-		gpio_set_value(CORGI_GPIO_MUTE_L, 0);
-		gpio_set_value(CORGI_GPIO_MUTE_R, 0);
+		gpiod_set_value(gpiod_mute_l, 0);
+		gpiod_set_value(gpiod_mute_r, 0);
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 		break;
 	case CORGI_LINE:
-		gpio_set_value(CORGI_GPIO_MUTE_L, 0);
-		gpio_set_value(CORGI_GPIO_MUTE_R, 0);
+		gpiod_set_value(gpiod_mute_l, 0);
+		gpiod_set_value(gpiod_mute_r, 0);
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 		break;
 	case CORGI_HEADSET:
-		gpio_set_value(CORGI_GPIO_MUTE_L, 0);
-		gpio_set_value(CORGI_GPIO_MUTE_R, 1);
+		gpiod_set_value(gpiod_mute_l, 0);
+		gpiod_set_value(gpiod_mute_r, 1);
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
@@ -108,8 +109,8 @@ static int corgi_startup(struct snd_pcm_substream *substream)
 static void corgi_shutdown(struct snd_pcm_substream *substream)
 {
 	/* set = unmute headphone */
-	gpio_set_value(CORGI_GPIO_MUTE_L, 1);
-	gpio_set_value(CORGI_GPIO_MUTE_R, 1);
+	gpiod_set_value(gpiod_mute_l, 1);
+	gpiod_set_value(gpiod_mute_r, 1);
 }
 
 static int corgi_hw_params(struct snd_pcm_substream *substream,
@@ -199,14 +200,14 @@ static int corgi_set_spk(struct snd_kcontrol *kcontrol,
 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *k, int event)
 {
-	gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
+	gpiod_set_value(gpiod_apm_on, SND_SOC_DAPM_EVENT_ON(event));
 	return 0;
 }
 
 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *k, int event)
 {
-	gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
+	gpiod_set_value(gpiod_mic_bias, SND_SOC_DAPM_EVENT_ON(event));
 	return 0;
 }
 
@@ -293,6 +294,19 @@ static int corgi_probe(struct platform_device *pdev)
 
 	card->dev = &pdev->dev;
 
+	gpiod_mute_l = devm_gpiod_get(&pdev->dev, "mute-l", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpiod_mute_l))
+		return PTR_ERR(gpiod_mute_l);
+	gpiod_mute_r = devm_gpiod_get(&pdev->dev, "mute-r", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpiod_mute_r))
+		return PTR_ERR(gpiod_mute_r);
+	gpiod_apm_on = devm_gpiod_get(&pdev->dev, "apm-on", GPIOD_OUT_LOW);
+	if (IS_ERR(gpiod_apm_on))
+		return PTR_ERR(gpiod_apm_on);
+	gpiod_mic_bias = devm_gpiod_get(&pdev->dev, "mic-bias", GPIOD_OUT_LOW);
+	if (IS_ERR(gpiod_mic_bias))
+		return PTR_ERR(gpiod_mic_bias);
+
 	ret = devm_snd_soc_register_card(&pdev->dev, card);
 	if (ret)
 		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
-- 
2.20.0