ALSA: sound/ps3: Restructure driver source
Sort includes, and reorder code so we can kill the forward declarations
No functional changes
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/ppc/snd_ps3.c b/sound/ppc/snd_ps3.c
index d660b0f..cd9109a 100644
--- a/sound/ppc/snd_ps3.c
+++ b/sound/ppc/snd_ps3.c
@@ -18,80 +18,30 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/io.h>
#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+#include <sound/asound.h>
+#include <sound/control.h>
#include <sound/core.h>
#include <sound/initval.h>
-#include <sound/pcm.h>
-#include <sound/asound.h>
#include <sound/memalloc.h>
+#include <sound/pcm.h>
#include <sound/pcm_params.h>
-#include <sound/control.h>
-#include <linux/dmapool.h>
-#include <linux/dma-mapping.h>
-#include <asm/firmware.h>
+
#include <asm/dma.h>
+#include <asm/firmware.h>
#include <asm/lv1call.h>
#include <asm/ps3.h>
#include <asm/ps3av.h>
-#include "snd_ps3_reg.h"
#include "snd_ps3.h"
+#include "snd_ps3_reg.h"
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("PS3 sound driver");
-MODULE_AUTHOR("Sony Computer Entertainment Inc.");
-
-/* module entries */
-static int __init snd_ps3_init(void);
-static void __exit snd_ps3_exit(void);
-
-/* ALSA snd driver ops */
-static int snd_ps3_pcm_open(struct snd_pcm_substream *substream);
-static int snd_ps3_pcm_close(struct snd_pcm_substream *substream);
-static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream);
-static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
- int cmd);
-static snd_pcm_uframes_t snd_ps3_pcm_pointer(struct snd_pcm_substream
- *substream);
-static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params);
-static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream);
-
-
-/* ps3_system_bus_driver entries */
-static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev);
-static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev);
-
-/* address setup */
-static int snd_ps3_map_mmio(void);
-static void snd_ps3_unmap_mmio(void);
-static int snd_ps3_allocate_irq(void);
-static void snd_ps3_free_irq(void);
-static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start);
-
-/* interrupt handler */
-static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id);
-
-
-/* set sampling rate/format */
-static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream);
-/* take effect parameter change */
-static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card);
-/* initialize avsetting and take it effect */
-static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card);
-/* setup dma */
-static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
- enum snd_ps3_dma_filltype filltype);
-static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card);
-
-static dma_addr_t v_to_bus(struct snd_ps3_card_info *, void *vaddr, int ch);
-
-
-module_init(snd_ps3_init);
-module_exit(snd_ps3_exit);
/*
* global
@@ -165,17 +115,6 @@
.fifo_size = PS3_AUDIO_FIFO_SIZE
};
-static struct snd_pcm_ops snd_ps3_pcm_spdif_ops = {
- .open = snd_ps3_pcm_open,
- .close = snd_ps3_pcm_close,
- .prepare = snd_ps3_pcm_prepare,
- .ioctl = snd_pcm_lib_ioctl,
- .trigger = snd_ps3_pcm_trigger,
- .pointer = snd_ps3_pcm_pointer,
- .hw_params = snd_ps3_pcm_hw_params,
- .hw_free = snd_ps3_pcm_hw_free
-};
-
static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card,
int count, int force_stop)
{
@@ -369,6 +308,71 @@
}
/*
+ * Interrupt handler
+ */
+static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id)
+{
+
+ uint32_t port_intr;
+ int underflow_occured = 0;
+ struct snd_ps3_card_info *card = dev_id;
+
+ if (!card->running) {
+ update_reg(PS3_AUDIO_AX_IS, 0);
+ update_reg(PS3_AUDIO_INTR_0, 0);
+ return IRQ_HANDLED;
+ }
+
+ port_intr = read_reg(PS3_AUDIO_AX_IS);
+ /*
+ *serial buffer empty detected (every 4 times),
+ *program next dma and kick it
+ */
+ if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) {
+ write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0));
+ if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
+ write_reg(PS3_AUDIO_AX_IS, port_intr);
+ underflow_occured = 1;
+ }
+ if (card->silent) {
+ /* we are still in silent time */
+ snd_ps3_program_dma(card,
+ (underflow_occured) ?
+ SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL :
+ SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
+ snd_ps3_kick_dma(card);
+ card->silent--;
+ } else {
+ snd_ps3_program_dma(card,
+ (underflow_occured) ?
+ SND_PS3_DMA_FILLTYPE_FIRSTFILL :
+ SND_PS3_DMA_FILLTYPE_RUNNING);
+ snd_ps3_kick_dma(card);
+ snd_pcm_period_elapsed(card->substream);
+ }
+ } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
+ write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0));
+ /*
+ * serial out underflow, but buffer empty not detected.
+ * in this case, fill fifo with 0 to recover. After
+ * filling dummy data, serial automatically start to
+ * consume them and then will generate normal buffer
+ * empty interrupts.
+ * If both buffer underflow and buffer empty are occured,
+ * it is better to do nomal data transfer than empty one
+ */
+ snd_ps3_program_dma(card,
+ SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
+ snd_ps3_kick_dma(card);
+ snd_ps3_program_dma(card,
+ SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
+ snd_ps3_kick_dma(card);
+ }
+ /* clear interrupt cause */
+ return IRQ_HANDLED;
+};
+
+/*
* audio mute on/off
* mute_on : 0 output enabled
* 1 mute
@@ -379,6 +383,142 @@
}
/*
+ * av setting
+ * NOTE: calling this function may generate audio interrupt.
+ */
+static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card)
+{
+ int ret, retries, i;
+ pr_debug("%s: start\n", __func__);
+
+ ret = ps3av_set_audio_mode(card->avs.avs_audio_ch,
+ card->avs.avs_audio_rate,
+ card->avs.avs_audio_width,
+ card->avs.avs_audio_format,
+ card->avs.avs_audio_source);
+ /*
+ * Reset the following unwanted settings:
+ */
+
+ /* disable all 3wire buffers */
+ update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
+ ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) |
+ PS3_AUDIO_AO_3WMCTRL_ASOEN(1) |
+ PS3_AUDIO_AO_3WMCTRL_ASOEN(2) |
+ PS3_AUDIO_AO_3WMCTRL_ASOEN(3)),
+ 0);
+ wmb(); /* ensure the hardware sees the change */
+ /* wait for actually stopped */
+ retries = 1000;
+ while ((read_reg(PS3_AUDIO_AO_3WMCTRL) &
+ (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) |
+ PS3_AUDIO_AO_3WMCTRL_ASORUN(1) |
+ PS3_AUDIO_AO_3WMCTRL_ASORUN(2) |
+ PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) &&
+ --retries) {
+ udelay(1);
+ }
+
+ /* reset buffer pointer */
+ for (i = 0; i < 4; i++) {
+ update_reg(PS3_AUDIO_AO_3WCTRL(i),
+ PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET);
+ udelay(10);
+ }
+ wmb(); /* ensure the hardware actually start resetting */
+
+ /* enable 3wire#0 buffer */
+ update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0));
+
+
+ /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */
+ update_mask_reg(PS3_AUDIO_AO_3WCTRL(0),
+ ~PS3_AUDIO_AO_3WCTRL_ASODF,
+ PS3_AUDIO_AO_3WCTRL_ASODF_LSB);
+ update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0),
+ ~PS3_AUDIO_AO_SPDCTRL_SPODF,
+ PS3_AUDIO_AO_SPDCTRL_SPODF_LSB);
+ /* ensure all the setting above is written back to register */
+ wmb();
+ /* avsetting driver altered AX_IE, caller must reset it if you want */
+ pr_debug("%s: end\n", __func__);
+ return ret;
+}
+
+/*
+ * set sampling rate according to the substream
+ */
+static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream)
+{
+ struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
+ struct snd_ps3_avsetting_info avs;
+ int ret;
+
+ avs = card->avs;
+
+ pr_debug("%s: called freq=%d width=%d\n", __func__,
+ substream->runtime->rate,
+ snd_pcm_format_width(substream->runtime->format));
+
+ pr_debug("%s: before freq=%d width=%d\n", __func__,
+ card->avs.avs_audio_rate, card->avs.avs_audio_width);
+
+ /* sample rate */
+ switch (substream->runtime->rate) {
+ case 44100:
+ avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K;
+ break;
+ case 48000:
+ avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
+ break;
+ case 88200:
+ avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K;
+ break;
+ case 96000:
+ avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K;
+ break;
+ default:
+ pr_info("%s: invalid rate %d\n", __func__,
+ substream->runtime->rate);
+ return 1;
+ }
+
+ /* width */
+ switch (snd_pcm_format_width(substream->runtime->format)) {
+ case 16:
+ avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
+ break;
+ case 24:
+ avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24;
+ break;
+ default:
+ pr_info("%s: invalid width %d\n", __func__,
+ snd_pcm_format_width(substream->runtime->format));
+ return 1;
+ }
+
+ memcpy(avs.avs_cs_info, ps3av_mode_cs_info, 8);
+
+ if (memcmp(&card->avs, &avs, sizeof(avs))) {
+ pr_debug("%s: after freq=%d width=%d\n", __func__,
+ card->avs.avs_audio_rate, card->avs.avs_audio_width);
+
+ card->avs = avs;
+ snd_ps3_change_avsetting(card);
+ ret = 0;
+ } else
+ ret = 1;
+
+ /* check CS non-audio bit and mute accordingly */
+ if (avs.avs_cs_info[0] & 0x02)
+ ps3av_audio_mute_analog(1); /* mute if non-audio */
+ else
+ ps3av_audio_mute_analog(0);
+
+ return ret;
+}
+
+/*
* PCM operators
*/
static int snd_ps3_pcm_open(struct snd_pcm_substream *substream)
@@ -403,6 +543,13 @@
return 0;
};
+static int snd_ps3_pcm_close(struct snd_pcm_substream *substream)
+{
+ /* mute on */
+ snd_ps3_mute(1);
+ return 0;
+};
+
static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
@@ -414,6 +561,13 @@
return 0;
};
+static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+ int ret;
+ ret = snd_pcm_lib_free_pages(substream);
+ return ret;
+};
+
static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream,
unsigned int delay_ms)
{
@@ -553,202 +707,6 @@
return ret;
};
-static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- int ret;
- ret = snd_pcm_lib_free_pages(substream);
- return ret;
-};
-
-static int snd_ps3_pcm_close(struct snd_pcm_substream *substream)
-{
- /* mute on */
- snd_ps3_mute(1);
- return 0;
-};
-
-static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card)
-{
- /*
- * avsetting driver seems to never change the followings
- * so, init them here once
- */
-
- /* no dma interrupt needed */
- write_reg(PS3_AUDIO_INTR_EN_0, 0);
-
- /* use every 4 buffer empty interrupt */
- update_mask_reg(PS3_AUDIO_AX_IC,
- PS3_AUDIO_AX_IC_AASOIMD_MASK,
- PS3_AUDIO_AX_IC_AASOIMD_EVERY4);
-
- /* enable 3wire clocks */
- update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
- ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED |
- PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED),
- 0);
- update_reg(PS3_AUDIO_AO_3WMCTRL,
- PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT);
-}
-
-/*
- * av setting
- * NOTE: calling this function may generate audio interrupt.
- */
-static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card)
-{
- int ret, retries, i;
- pr_debug("%s: start\n", __func__);
-
- ret = ps3av_set_audio_mode(card->avs.avs_audio_ch,
- card->avs.avs_audio_rate,
- card->avs.avs_audio_width,
- card->avs.avs_audio_format,
- card->avs.avs_audio_source);
- /*
- * Reset the following unwanted settings:
- */
-
- /* disable all 3wire buffers */
- update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
- ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) |
- PS3_AUDIO_AO_3WMCTRL_ASOEN(1) |
- PS3_AUDIO_AO_3WMCTRL_ASOEN(2) |
- PS3_AUDIO_AO_3WMCTRL_ASOEN(3)),
- 0);
- wmb(); /* ensure the hardware sees the change */
- /* wait for actually stopped */
- retries = 1000;
- while ((read_reg(PS3_AUDIO_AO_3WMCTRL) &
- (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) |
- PS3_AUDIO_AO_3WMCTRL_ASORUN(1) |
- PS3_AUDIO_AO_3WMCTRL_ASORUN(2) |
- PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) &&
- --retries) {
- udelay(1);
- }
-
- /* reset buffer pointer */
- for (i = 0; i < 4; i++) {
- update_reg(PS3_AUDIO_AO_3WCTRL(i),
- PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET);
- udelay(10);
- }
- wmb(); /* ensure the hardware actually start resetting */
-
- /* enable 3wire#0 buffer */
- update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0));
-
-
- /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */
- update_mask_reg(PS3_AUDIO_AO_3WCTRL(0),
- ~PS3_AUDIO_AO_3WCTRL_ASODF,
- PS3_AUDIO_AO_3WCTRL_ASODF_LSB);
- update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0),
- ~PS3_AUDIO_AO_SPDCTRL_SPODF,
- PS3_AUDIO_AO_SPDCTRL_SPODF_LSB);
- /* ensure all the setting above is written back to register */
- wmb();
- /* avsetting driver altered AX_IE, caller must reset it if you want */
- pr_debug("%s: end\n", __func__);
- return ret;
-}
-
-static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card)
-{
- int ret;
- pr_debug("%s: start\n", __func__);
- card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2;
- card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
- card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
- card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM;
- card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL;
- memcpy(card->avs.avs_cs_info, ps3av_mode_cs_info, 8);
-
- ret = snd_ps3_change_avsetting(card);
-
- snd_ps3_audio_fixup(card);
-
- /* to start to generate SPDIF signal, fill data */
- snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
- snd_ps3_kick_dma(card);
- pr_debug("%s: end\n", __func__);
- return ret;
-}
-
-/*
- * set sampling rate according to the substream
- */
-static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream)
-{
- struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
- struct snd_ps3_avsetting_info avs;
- int ret;
-
- avs = card->avs;
-
- pr_debug("%s: called freq=%d width=%d\n", __func__,
- substream->runtime->rate,
- snd_pcm_format_width(substream->runtime->format));
-
- pr_debug("%s: before freq=%d width=%d\n", __func__,
- card->avs.avs_audio_rate, card->avs.avs_audio_width);
-
- /* sample rate */
- switch (substream->runtime->rate) {
- case 44100:
- avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K;
- break;
- case 48000:
- avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
- break;
- case 88200:
- avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K;
- break;
- case 96000:
- avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K;
- break;
- default:
- pr_info("%s: invalid rate %d\n", __func__,
- substream->runtime->rate);
- return 1;
- }
-
- /* width */
- switch (snd_pcm_format_width(substream->runtime->format)) {
- case 16:
- avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
- break;
- case 24:
- avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24;
- break;
- default:
- pr_info("%s: invalid width %d\n", __func__,
- snd_pcm_format_width(substream->runtime->format));
- return 1;
- }
-
- memcpy(avs.avs_cs_info, ps3av_mode_cs_info, 8);
-
- if (memcmp(&card->avs, &avs, sizeof(avs))) {
- pr_debug("%s: after freq=%d width=%d\n", __func__,
- card->avs.avs_audio_rate, card->avs.avs_audio_width);
-
- card->avs = avs;
- snd_ps3_change_avsetting(card);
- ret = 0;
- } else
- ret = 1;
-
- /* check CS non-audio bit and mute accordingly */
- if (avs.avs_cs_info[0] & 0x02)
- ps3av_audio_mute_analog(1); /* mute if non-audio */
- else
- ps3av_audio_mute_analog(0);
-
- return ret;
-}
-
/*
* SPDIF status bits controls
*/
@@ -815,6 +773,17 @@
},
};
+static struct snd_pcm_ops snd_ps3_pcm_spdif_ops = {
+ .open = snd_ps3_pcm_open,
+ .close = snd_ps3_pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_ps3_pcm_hw_params,
+ .hw_free = snd_ps3_pcm_hw_free,
+ .prepare = snd_ps3_pcm_prepare,
+ .trigger = snd_ps3_pcm_trigger,
+ .pointer = snd_ps3_pcm_pointer,
+};
+
static int snd_ps3_map_mmio(void)
{
@@ -912,6 +881,52 @@
ret);
}
+static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card)
+{
+ /*
+ * avsetting driver seems to never change the followings
+ * so, init them here once
+ */
+
+ /* no dma interrupt needed */
+ write_reg(PS3_AUDIO_INTR_EN_0, 0);
+
+ /* use every 4 buffer empty interrupt */
+ update_mask_reg(PS3_AUDIO_AX_IC,
+ PS3_AUDIO_AX_IC_AASOIMD_MASK,
+ PS3_AUDIO_AX_IC_AASOIMD_EVERY4);
+
+ /* enable 3wire clocks */
+ update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
+ ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED |
+ PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED),
+ 0);
+ update_reg(PS3_AUDIO_AO_3WMCTRL,
+ PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT);
+}
+
+static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card)
+{
+ int ret;
+ pr_debug("%s: start\n", __func__);
+ card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2;
+ card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
+ card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
+ card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM;
+ card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL;
+ memcpy(card->avs.avs_cs_info, ps3av_mode_cs_info, 8);
+
+ ret = snd_ps3_change_avsetting(card);
+
+ snd_ps3_audio_fixup(card);
+
+ /* to start to generate SPDIF signal, fill data */
+ snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
+ snd_ps3_kick_dma(card);
+ pr_debug("%s: end\n", __func__);
+ return ret;
+}
+
static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev)
{
int i, ret;
@@ -1113,71 +1128,6 @@
/*
- * Interrupt handler
- */
-static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id)
-{
-
- uint32_t port_intr;
- int underflow_occured = 0;
- struct snd_ps3_card_info *card = dev_id;
-
- if (!card->running) {
- update_reg(PS3_AUDIO_AX_IS, 0);
- update_reg(PS3_AUDIO_INTR_0, 0);
- return IRQ_HANDLED;
- }
-
- port_intr = read_reg(PS3_AUDIO_AX_IS);
- /*
- *serial buffer empty detected (every 4 times),
- *program next dma and kick it
- */
- if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) {
- write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0));
- if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
- write_reg(PS3_AUDIO_AX_IS, port_intr);
- underflow_occured = 1;
- }
- if (card->silent) {
- /* we are still in silent time */
- snd_ps3_program_dma(card,
- (underflow_occured) ?
- SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL :
- SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
- snd_ps3_kick_dma(card);
- card->silent--;
- } else {
- snd_ps3_program_dma(card,
- (underflow_occured) ?
- SND_PS3_DMA_FILLTYPE_FIRSTFILL :
- SND_PS3_DMA_FILLTYPE_RUNNING);
- snd_ps3_kick_dma(card);
- snd_pcm_period_elapsed(card->substream);
- }
- } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
- write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0));
- /*
- * serial out underflow, but buffer empty not detected.
- * in this case, fill fifo with 0 to recover. After
- * filling dummy data, serial automatically start to
- * consume them and then will generate normal buffer
- * empty interrupts.
- * If both buffer underflow and buffer empty are occured,
- * it is better to do nomal data transfer than empty one
- */
- snd_ps3_program_dma(card,
- SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
- snd_ps3_kick_dma(card);
- snd_ps3_program_dma(card,
- SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
- snd_ps3_kick_dma(card);
- }
- /* clear interrupt cause */
- return IRQ_HANDLED;
-};
-
-/*
* module/subsystem initialize/terminate
*/
static int __init snd_ps3_init(void)
@@ -1195,10 +1145,15 @@
return ret;
}
+module_init(snd_ps3_init);
static void __exit snd_ps3_exit(void)
{
ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info);
}
+module_exit(snd_ps3_exit);
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("PS3 sound driver");
+MODULE_AUTHOR("Sony Computer Entertainment Inc.");
MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND);