ALSA: hda - Move codec create to hda_controller

Codec creation and stream initialization can be shared between
hda_intel and hda platform drivers.  Move it and the static functions
it depends on to hda_controller.c.

Signed-off-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 227 insertions, 12 deletions

diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index 43b99b495347..6156d0a2c0f9 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -25,6 +25,7 @@
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/initval.h>
@@ -1022,7 +1023,6 @@ int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
 	pcm->dev = &codec->dev;
 	return 0;
 }
-EXPORT_SYMBOL_GPL(azx_attach_pcm_stream);
 
 /*
  * CORB / RIRB interface
@@ -1380,7 +1380,7 @@ static unsigned int azx_single_get_response(struct hda_bus *bus,
  */
 
 /* send a command */
-int azx_send_cmd(struct hda_bus *bus, unsigned int val)
+static int azx_send_cmd(struct hda_bus *bus, unsigned int val)
 {
 	struct azx *chip = bus->private_data;
 
@@ -1395,7 +1395,7 @@ int azx_send_cmd(struct hda_bus *bus, unsigned int val)
 EXPORT_SYMBOL_GPL(azx_send_cmd);
 
 /* get a response */
-unsigned int azx_get_response(struct hda_bus *bus,
+static unsigned int azx_get_response(struct hda_bus *bus,
 				     unsigned int addr)
 {
 	struct azx *chip = bus->private_data;
@@ -1420,9 +1420,9 @@ azx_get_dsp_loader_dev(struct azx *chip)
 	return &chip->azx_dev[chip->playback_index_offset];
 }
 
-int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
-			 unsigned int byte_size,
-			 struct snd_dma_buffer *bufp)
+static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
+				unsigned int byte_size,
+				struct snd_dma_buffer *bufp)
 {
 	u32 *bdl;
 	struct azx *chip = bus->private_data;
@@ -1480,9 +1480,8 @@ int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
 	dsp_unlock(azx_dev);
 	return err;
 }
-EXPORT_SYMBOL_GPL(azx_load_dsp_prepare);
 
-void azx_load_dsp_trigger(struct hda_bus *bus, bool start)
+static void azx_load_dsp_trigger(struct hda_bus *bus, bool start)
 {
 	struct azx *chip = bus->private_data;
 	struct azx_dev *azx_dev = azx_get_dsp_loader_dev(chip);
@@ -1493,10 +1492,9 @@ void azx_load_dsp_trigger(struct hda_bus *bus, bool start)
 		azx_stream_stop(chip, azx_dev);
 	azx_dev->running = start;
 }
-EXPORT_SYMBOL_GPL(azx_load_dsp_trigger);
 
-void azx_load_dsp_cleanup(struct hda_bus *bus,
-			  struct snd_dma_buffer *dmab)
+static void azx_load_dsp_cleanup(struct hda_bus *bus,
+				 struct snd_dma_buffer *dmab)
 {
 	struct azx *chip = bus->private_data;
 	struct azx_dev *azx_dev = azx_get_dsp_loader_dev(chip);
@@ -1523,7 +1521,6 @@ void azx_load_dsp_cleanup(struct hda_bus *bus,
 	spin_unlock_irq(&chip->reg_lock);
 	dsp_unlock(azx_dev);
 }
-EXPORT_SYMBOL_GPL(azx_load_dsp_cleanup);
 #endif /* CONFIG_SND_HDA_DSP_LOADER */
 
 int azx_alloc_stream_pages(struct azx *chip)
@@ -1746,6 +1743,7 @@ void azx_stop_chip(struct azx *chip)
 
 	chip->initialized = 0;
 }
+EXPORT_SYMBOL_GPL(azx_stop_chip);
 
 /*
  * interrupt handler
@@ -1812,5 +1810,222 @@ irqreturn_t azx_interrupt(int irq, void *dev_id)
 }
 EXPORT_SYMBOL_GPL(azx_interrupt);
 
+/*
+ * Codec initerface
+ */
+
+/*
+ * Probe the given codec address
+ */
+static int probe_codec(struct azx *chip, int addr)
+{
+	unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) |
+		(AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
+	unsigned int res;
+
+	mutex_lock(&chip->bus->cmd_mutex);
+	chip->probing = 1;
+	azx_send_cmd(chip->bus, cmd);
+	res = azx_get_response(chip->bus, addr);
+	chip->probing = 0;
+	mutex_unlock(&chip->bus->cmd_mutex);
+	if (res == -1)
+		return -EIO;
+	dev_dbg(chip->card->dev, "codec #%d probed OK\n", addr);
+	return 0;
+}
+
+static void azx_bus_reset(struct hda_bus *bus)
+{
+	struct azx *chip = bus->private_data;
+
+	bus->in_reset = 1;
+	azx_stop_chip(chip);
+	azx_init_chip(chip, 1);
+#ifdef CONFIG_PM
+	if (chip->initialized) {
+		struct azx_pcm *p;
+		list_for_each_entry(p, &chip->pcm_list, list)
+			snd_pcm_suspend_all(p->pcm);
+		snd_hda_suspend(chip->bus);
+		snd_hda_resume(chip->bus);
+	}
+#endif
+	bus->in_reset = 0;
+}
+
+#ifdef CONFIG_PM
+/* power-up/down the controller */
+static void azx_power_notify(struct hda_bus *bus, bool power_up)
+{
+	struct azx *chip = bus->private_data;
+
+	if (!(chip->driver_caps & AZX_DCAPS_PM_RUNTIME))
+		return;
+
+	if (power_up)
+		pm_runtime_get_sync(chip->card->dev);
+	else
+		pm_runtime_put_sync(chip->card->dev);
+}
+#endif
+
+static int get_jackpoll_interval(struct azx *chip)
+{
+	int i;
+	unsigned int j;
+
+	if (!chip->jackpoll_ms)
+		return 0;
+
+	i = chip->jackpoll_ms[chip->dev_index];
+	if (i == 0)
+		return 0;
+	if (i < 50 || i > 60000)
+		j = 0;
+	else
+		j = msecs_to_jiffies(i);
+	if (j == 0)
+		dev_warn(chip->card->dev,
+			 "jackpoll_ms value out of range: %d\n", i);
+	return j;
+}
+
+/* Codec initialization */
+int azx_codec_create(struct azx *chip, const char *model,
+		     unsigned int max_slots,
+		     int *power_save_to)
+{
+	struct hda_bus_template bus_temp;
+	int c, codecs, err;
+
+	memset(&bus_temp, 0, sizeof(bus_temp));
+	bus_temp.private_data = chip;
+	bus_temp.modelname = model;
+	bus_temp.pci = chip->pci;
+	bus_temp.ops.command = azx_send_cmd;
+	bus_temp.ops.get_response = azx_get_response;
+	bus_temp.ops.attach_pcm = azx_attach_pcm_stream;
+	bus_temp.ops.bus_reset = azx_bus_reset;
+#ifdef CONFIG_PM
+	bus_temp.power_save = power_save_to;
+	bus_temp.ops.pm_notify = azx_power_notify;
+#endif
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+	bus_temp.ops.load_dsp_prepare = azx_load_dsp_prepare;
+	bus_temp.ops.load_dsp_trigger = azx_load_dsp_trigger;
+	bus_temp.ops.load_dsp_cleanup = azx_load_dsp_cleanup;
+#endif
+
+	err = snd_hda_bus_new(chip->card, &bus_temp, &chip->bus);
+	if (err < 0)
+		return err;
+
+	if (chip->driver_caps & AZX_DCAPS_RIRB_DELAY) {
+		dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");
+		chip->bus->needs_damn_long_delay = 1;
+	}
+
+	codecs = 0;
+	if (!max_slots)
+		max_slots = AZX_DEFAULT_CODECS;
+
+	/* First try to probe all given codec slots */
+	for (c = 0; c < max_slots; c++) {
+		if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
+			if (probe_codec(chip, c) < 0) {
+				/* Some BIOSen give you wrong codec addresses
+				 * that don't exist
+				 */
+				dev_warn(chip->card->dev,
+					 "Codec #%d probe error; disabling it...\n", c);
+				chip->codec_mask &= ~(1 << c);
+				/* More badly, accessing to a non-existing
+				 * codec often screws up the controller chip,
+				 * and disturbs the further communications.
+				 * Thus if an error occurs during probing,
+				 * better to reset the controller chip to
+				 * get back to the sanity state.
+				 */
+				azx_stop_chip(chip);
+				azx_init_chip(chip, 1);
+			}
+		}
+	}
+
+	/* AMD chipsets often cause the communication stalls upon certain
+	 * sequence like the pin-detection.  It seems that forcing the synced
+	 * access works around the stall.  Grrr...
+	 */
+	if (chip->driver_caps & AZX_DCAPS_SYNC_WRITE) {
+		dev_dbg(chip->card->dev, "Enable sync_write for stable communication\n");
+		chip->bus->sync_write = 1;
+		chip->bus->allow_bus_reset = 1;
+	}
+
+	/* Then create codec instances */
+	for (c = 0; c < max_slots; c++) {
+		if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
+			struct hda_codec *codec;
+			err = snd_hda_codec_new(chip->bus, c, &codec);
+			if (err < 0)
+				continue;
+			codec->jackpoll_interval = get_jackpoll_interval(chip);
+			codec->beep_mode = chip->beep_mode;
+			codecs++;
+		}
+	}
+	if (!codecs) {
+		dev_err(chip->card->dev, "no codecs initialized\n");
+		return -ENXIO;
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(azx_codec_create);
+
+/* configure each codec instance */
+int azx_codec_configure(struct azx *chip)
+{
+	struct hda_codec *codec;
+	list_for_each_entry(codec, &chip->bus->codec_list, list) {
+		snd_hda_codec_configure(codec);
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(azx_codec_configure);
+
+/* mixer creation - all stuff is implemented in hda module */
+int azx_mixer_create(struct azx *chip)
+{
+	return snd_hda_build_controls(chip->bus);
+}
+EXPORT_SYMBOL_GPL(azx_mixer_create);
+
+
+/* initialize SD streams */
+int azx_init_stream(struct azx *chip)
+{
+	int i;
+
+	/* initialize each stream (aka device)
+	 * assign the starting bdl address to each stream (device)
+	 * and initialize
+	 */
+	for (i = 0; i < chip->num_streams; i++) {
+		struct azx_dev *azx_dev = &chip->azx_dev[i];
+		azx_dev->posbuf = (u32 __iomem *)(chip->posbuf.area + i * 8);
+		/* offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
+		azx_dev->sd_addr = chip->remap_addr + (0x20 * i + 0x80);
+		/* int mask: SDI0=0x01, SDI1=0x02, ... SDO3=0x80 */
+		azx_dev->sd_int_sta_mask = 1 << i;
+		/* stream tag: must be non-zero and unique */
+		azx_dev->index = i;
+		azx_dev->stream_tag = i + 1;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(azx_init_stream);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Common HDA driver funcitons");