Merge tag 'asoc-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Updates for v3.12

- DAPM is now mandatory for CODEC drivers in order to avoid the repeated
  regressions in the special cases for non-DAPM CODECs and make it
  easier to integrate with other components on boards.  All existing
  drivers have had some level of DAPM support added.
- A lot of cleanups in DAPM plus support for maintaining controls in a
  specific state while a DAPM widget all contributed by Lars-Peter Clausen.
- Core helpers for bitbanged AC'97 reset from Markus Pargmann.
- New drivers and support for Analog Devices ADAU1702 and ADAU1401(a),
  Asahi Kasei Microdevices AK4554, Atmel AT91ASM9x5 and WM8904 based
  machines, Freescale S/PDIF and SSI AC'97, Renesas R-Car SoCs, Samsung
  Exynos5420 SoCs, Texas Instruments PCM1681 and PCM1792A and Wolfson
  Microelectronics WM8997.
- Support for building drivers that can support it cross-platform for
  compile test.

1 files changed, 182 insertions, 58 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 88daa649fc06..5471940dc0f7 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -30,9 +30,12 @@
 #include <linux/bitops.h>
 #include <linux/debugfs.h>
 #include <linux/platform_device.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/ctype.h>
 #include <linux/slab.h>
 #include <linux/of.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
 #include <sound/ac97_codec.h>
 #include <sound/core.h>
 #include <sound/jack.h>
@@ -47,8 +50,6 @@
 
 #define NAME_SIZE       32
 
-static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
-
 #ifdef CONFIG_DEBUG_FS
 struct dentry *snd_soc_debugfs_root;
 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
@@ -69,6 +70,16 @@ static int pmdown_time = 5000;
 module_param(pmdown_time, int, 0);
 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
 
+struct snd_ac97_reset_cfg {
+        struct pinctrl *pctl;
+        struct pinctrl_state *pstate_reset;
+        struct pinctrl_state *pstate_warm_reset;
+        struct pinctrl_state *pstate_run;
+        int gpio_sdata;
+        int gpio_sync;
+        int gpio_reset;
+};
+
 /* returns the minimum number of bytes needed to represent
  * a particular given value */
 static int min_bytes_needed(unsigned long val)
@@ -532,6 +543,15 @@ static int soc_ac97_dev_register(struct snd_soc_codec *codec)
 }
 #endif
 
+static void codec2codec_close_delayed_work(struct work_struct *work)
+{
+        /* Currently nothing to do for c2c links
+         * Since c2c links are internal nodes in the DAPM graph and
+         * don't interface with the outside world or application layer
+         * we don't have to do any special handling on close.
+         */
+}
+
 #ifdef CONFIG_PM_SLEEP
 /* powers down audio subsystem for suspend */
 int snd_soc_suspend(struct device *dev)
@@ -1430,6 +1450,9 @@ static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
                                 return ret;
                         }
                 } else {
+                        INIT_DELAYED_WORK(&rtd->delayed_work,
+                                                codec2codec_close_delayed_work);
+
                         /* link the DAI widgets */
                         play_w = codec_dai->playback_widget;
                         capture_w = cpu_dai->capture_widget;
@@ -2082,6 +2105,117 @@ int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 }
 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
 
+static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
+
+static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
+{
+        struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
+
+        pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
+
+        gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
+
+        udelay(10);
+
+        gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
+
+        pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
+        msleep(2);
+}
+
+static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
+{
+        struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
+
+        pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
+
+        gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
+        gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
+        gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
+
+        udelay(10);
+
+        gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
+
+        pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
+        msleep(2);
+}
+
+static int snd_soc_ac97_parse_pinctl(struct device *dev,
+                struct snd_ac97_reset_cfg *cfg)
+{
+        struct pinctrl *p;
+        struct pinctrl_state *state;
+        int gpio;
+        int ret;
+
+        p = devm_pinctrl_get(dev);
+        if (IS_ERR(p)) {
+                dev_err(dev, "Failed to get pinctrl\n");
+                return PTR_RET(p);
+        }
+        cfg->pctl = p;
+
+        state = pinctrl_lookup_state(p, "ac97-reset");
+        if (IS_ERR(state)) {
+                dev_err(dev, "Can't find pinctrl state ac97-reset\n");
+                return PTR_RET(state);
+        }
+        cfg->pstate_reset = state;
+
+        state = pinctrl_lookup_state(p, "ac97-warm-reset");
+        if (IS_ERR(state)) {
+                dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
+                return PTR_RET(state);
+        }
+        cfg->pstate_warm_reset = state;
+
+        state = pinctrl_lookup_state(p, "ac97-running");
+        if (IS_ERR(state)) {
+                dev_err(dev, "Can't find pinctrl state ac97-running\n");
+                return PTR_RET(state);
+        }
+        cfg->pstate_run = state;
+
+        gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
+        if (gpio < 0) {
+                dev_err(dev, "Can't find ac97-sync gpio\n");
+                return gpio;
+        }
+        ret = devm_gpio_request(dev, gpio, "AC97 link sync");
+        if (ret) {
+                dev_err(dev, "Failed requesting ac97-sync gpio\n");
+                return ret;
+        }
+        cfg->gpio_sync = gpio;
+
+        gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
+        if (gpio < 0) {
+                dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
+                return gpio;
+        }
+        ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
+        if (ret) {
+                dev_err(dev, "Failed requesting ac97-sdata gpio\n");
+                return ret;
+        }
+        cfg->gpio_sdata = gpio;
+
+        gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
+        if (gpio < 0) {
+                dev_err(dev, "Can't find ac97-reset gpio\n");
+                return gpio;
+        }
+        ret = devm_gpio_request(dev, gpio, "AC97 link reset");
+        if (ret) {
+                dev_err(dev, "Failed requesting ac97-reset gpio\n");
+                return ret;
+        }
+        cfg->gpio_reset = gpio;
+
+        return 0;
+}
+
 struct snd_ac97_bus_ops *soc_ac97_ops;
 EXPORT_SYMBOL_GPL(soc_ac97_ops);
 
@@ -2100,6 +2234,35 @@ int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
 
 /**
+ * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
+ *
+ * This function sets the reset and warm_reset properties of ops and parses
+ * the device node of pdev to get pinctrl states and gpio numbers to use.
+ */
+int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
+                struct platform_device *pdev)
+{
+        struct device *dev = &pdev->dev;
+        struct snd_ac97_reset_cfg cfg;
+        int ret;
+
+        ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
+        if (ret)
+                return ret;
+
+        ret = snd_soc_set_ac97_ops(ops);
+        if (ret)
+                return ret;
+
+        ops->warm_reset = snd_soc_ac97_warm_reset;
+        ops->reset = snd_soc_ac97_reset;
+
+        snd_ac97_rst_cfg = cfg;
+        return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
+
+/**
  * snd_soc_free_ac97_codec - free AC97 codec device
  * @codec: audio codec
  *
@@ -2301,6 +2464,22 @@ static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
         return 0;
 }
 
+struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
+                                               const char *name)
+{
+        struct snd_card *card = soc_card->snd_card;
+        struct snd_kcontrol *kctl;
+
+        if (unlikely(!name))
+                return NULL;
+
+        list_for_each_entry(kctl, &card->controls, list)
+                if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
+                        return kctl;
+        return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
+
 /**
  * snd_soc_add_codec_controls - add an array of controls to a codec.
  * Convenience function to add a list of controls. Many codecs were
@@ -2543,59 +2722,6 @@ int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
 
 /**
- * snd_soc_info_enum_ext - external enumerated single mixer info callback
- * @kcontrol: mixer control
- * @uinfo: control element information
- *
- * Callback to provide information about an external enumerated
- * single mixer.
- *
- * Returns 0 for success.
- */
-int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
-        struct snd_ctl_elem_info *uinfo)
-{
-        struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
-
-        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-        uinfo->count = 1;
-        uinfo->value.enumerated.items = e->max;
-
-        if (uinfo->value.enumerated.item > e->max - 1)
-                uinfo->value.enumerated.item = e->max - 1;
-        strcpy(uinfo->value.enumerated.name,
-                e->texts[uinfo->value.enumerated.item]);
-        return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
-
-/**
- * snd_soc_info_volsw_ext - external single mixer info callback
- * @kcontrol: mixer control
- * @uinfo: control element information
- *
- * Callback to provide information about a single external mixer control.
- *
- * Returns 0 for success.
- */
-int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
-        struct snd_ctl_elem_info *uinfo)
-{
-        int max = kcontrol->private_value;
-
-        if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
-                uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
-        else
-                uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-
-        uinfo->count = 1;
-        uinfo->value.integer.min = 0;
-        uinfo->value.integer.max = max;
-        return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
-
-/**
  * snd_soc_info_volsw - single mixer info callback
  * @kcontrol: mixer control
  * @uinfo: control element information
@@ -3910,10 +4036,8 @@ int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
 {
         /* create platform component name */
         platform->name = fmt_single_name(dev, &platform->id);
-        if (platform->name == NULL) {
-                kfree(platform);
+        if (platform->name == NULL)
                 return -ENOMEM;
-        }
 
         platform->dev = dev;
         platform->driver = platform_drv;