diff options
Diffstat (limited to 'sound/ppc/snd_ps3.c')
| -rw-r--r-- | sound/ppc/snd_ps3.c | 1125 |
1 files changed, 1125 insertions, 0 deletions
diff --git a/sound/ppc/snd_ps3.c b/sound/ppc/snd_ps3.c new file mode 100644 index 000000000000..1aa0b467599f --- /dev/null +++ b/sound/ppc/snd_ps3.c @@ -0,0 +1,1125 @@ +/* + * Audio support for PS3 + * Copyright (C) 2007 Sony Computer Entertainment Inc. + * All rights reserved. + * Copyright 2006, 2007 Sony Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License + * as published by the Free Software Foundation; version 2 of the Licence. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/interrupt.h> +#include <sound/driver.h> +#include <sound/core.h> +#include <sound/initval.h> +#include <sound/pcm.h> +#include <sound/asound.h> +#include <sound/memalloc.h> +#include <sound/pcm_params.h> +#include <sound/control.h> +#include <linux/dmapool.h> +#include <linux/dma-mapping.h> +#include <asm/firmware.h> +#include <linux/io.h> +#include <asm/dma.h> +#include <asm/lv1call.h> +#include <asm/ps3.h> +#include <asm/ps3av.h> + +#include "snd_ps3_reg.h" +#include "snd_ps3.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 + */ +static struct snd_ps3_card_info the_card; + +static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY; + +module_param_named(start_delay, snd_ps3_start_delay, uint, 0644); +MODULE_PARM_DESC(start_delay, "time to insert silent data in milisec"); + +static int index = SNDRV_DEFAULT_IDX1; +static char *id = SNDRV_DEFAULT_STR1; + +module_param(index, int, 0444); +MODULE_PARM_DESC(index, "Index value for PS3 soundchip."); +module_param(id, charp, 0444); +MODULE_PARM_DESC(id, "ID string for PS3 soundchip."); + + +/* + * PS3 audio register access + */ +static inline u32 read_reg(unsigned int reg) +{ + return in_be32(the_card.mapped_mmio_vaddr + reg); +} +static inline void write_reg(unsigned int reg, u32 val) +{ + out_be32(the_card.mapped_mmio_vaddr + reg, val); +} +static inline void update_reg(unsigned int reg, u32 or_val) +{ + u32 newval = read_reg(reg) | or_val; + write_reg(reg, newval); +} +static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val) +{ + u32 newval = (read_reg(reg) & mask) | or_val; + write_reg(reg, newval); +} + +/* + * ALSA defs + */ +const static struct snd_pcm_hardware snd_ps3_pcm_hw = { + .info = (SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_NONINTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = (SNDRV_PCM_FMTBIT_S16_BE | + SNDRV_PCM_FMTBIT_S24_BE), + .rates = (SNDRV_PCM_RATE_44100 | + SNDRV_PCM_RATE_48000 | + SNDRV_PCM_RATE_88200 | + SNDRV_PCM_RATE_96000), + .rate_min = 44100, + .rate_max = 96000, + + .channels_min = 2, /* stereo only */ + .channels_max = 2, + + .buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64, + + /* interrupt by four stages */ + .period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4, + .period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4, + + .periods_min = 16, + .periods_max = 32, /* buffer_size_max/ period_bytes_max */ + + .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) +{ + int dma_ch, done, retries, stop_forced = 0; + uint32_t status; + + for (dma_ch = 0; dma_ch < 8; dma_ch ++) { + retries = count; + do { + status = read_reg(PS3_AUDIO_KICK(dma_ch)) & + PS3_AUDIO_KICK_STATUS_MASK; + switch (status) { + case PS3_AUDIO_KICK_STATUS_DONE: + case PS3_AUDIO_KICK_STATUS_NOTIFY: + case PS3_AUDIO_KICK_STATUS_CLEAR: + case PS3_AUDIO_KICK_STATUS_ERROR: + done = 1; + break; + default: + done = 0; + udelay(10); + } + } while (!done && --retries); + if (!retries && force_stop) { + pr_info("%s: DMA ch %d is not stopped.", + __func__, dma_ch); + /* last resort. force to stop dma. + * NOTE: this cause DMA done interrupts + */ + update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR); + stop_forced = 1; + } + } + return stop_forced; +} + +/* + * wait for all dma is done. + * NOTE: caller should reset card->running before call. + * If not, the interrupt handler will re-start DMA, + * then DMA is never stopped. + */ +static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card) +{ + int stop_forced; + /* + * wait for the last dma is done + */ + + /* + * expected maximum DMA done time is 5.7ms + something (DMA itself). + * 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next + * DMA kick event would occur. + */ + stop_forced = snd_ps3_verify_dma_stop(card, 700, 1); + + /* + * clear outstanding interrupts. + */ + update_reg(PS3_AUDIO_INTR_0, 0); + update_reg(PS3_AUDIO_AX_IS, 0); + + /* + *revert CLEAR bit since it will not reset automatically after DMA stop + */ + if (stop_forced) + update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0); + /* ensure the hardware sees changes */ + wmb(); +} + +static void snd_ps3_kick_dma(struct snd_ps3_card_info *card) +{ + + update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST); + /* ensure the hardware sees the change */ + wmb(); +} + +/* + * convert virtual addr to ioif bus addr. + */ +static dma_addr_t v_to_bus(struct snd_ps3_card_info *card, + void * paddr, + int ch) +{ + return card->dma_start_bus_addr[ch] + + (paddr - card->dma_start_vaddr[ch]); +}; + + +/* + * increment ring buffer pointer. + * NOTE: caller must hold write spinlock + */ +static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card, + enum snd_ps3_ch ch, size_t byte_count, + int stage) +{ + if (!stage) + card->dma_last_transfer_vaddr[ch] = + card->dma_next_transfer_vaddr[ch]; + card->dma_next_transfer_vaddr[ch] += byte_count; + if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <= + card->dma_next_transfer_vaddr[ch]) { + card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch]; + } +} +/* + * setup dmac to send data to audio and attenuate samples on the ring buffer + */ +static int snd_ps3_program_dma(struct snd_ps3_card_info *card, + enum snd_ps3_dma_filltype filltype) +{ + /* this dmac does not support over 4G */ + uint32_t dma_addr; + int fill_stages, dma_ch, stage; + enum snd_ps3_ch ch; + uint32_t ch0_kick_event = 0; /* initialize to mute gcc */ + void *start_vaddr; + unsigned long irqsave; + int silent = 0; + + switch (filltype) { + case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL: + silent = 1; + /* intentionally fall thru */ + case SND_PS3_DMA_FILLTYPE_FIRSTFILL: + ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS; + break; + + case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING: + silent = 1; + /* intentionally fall thru */ + case SND_PS3_DMA_FILLTYPE_RUNNING: + ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY; + break; + } + + snd_ps3_verify_dma_stop(card, 700, 0); + fill_stages = 4; + spin_lock_irqsave(&card->dma_lock, irqsave); + for (ch = 0; ch < 2; ch++) { + start_vaddr = card->dma_next_transfer_vaddr[0]; + for (stage = 0; stage < fill_stages; stage ++) { + dma_ch = stage * 2 + ch; + if (silent) + dma_addr = card->null_buffer_start_dma_addr; + else + dma_addr = + v_to_bus(card, + card->dma_next_transfer_vaddr[ch], + ch); + + write_reg(PS3_AUDIO_SOURCE(dma_ch), + (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY | + dma_addr)); + + /* dst: fixed to 3wire#0 */ + if (ch == 0) + write_reg(PS3_AUDIO_DEST(dma_ch), + (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | + PS3_AUDIO_AO_3W_LDATA(0))); + else + write_reg(PS3_AUDIO_DEST(dma_ch), + (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | + PS3_AUDIO_AO_3W_RDATA(0))); + + /* count always 1 DMA block (1/2 stage = 128 bytes) */ + write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0); + /* bump pointer if needed */ + if (!silent) + snd_ps3_bump_buffer(card, ch, + PS3_AUDIO_DMAC_BLOCK_SIZE, + stage); + + /* kick event */ + if (dma_ch == 0) + write_reg(PS3_AUDIO_KICK(dma_ch), + ch0_kick_event); + else + write_reg(PS3_AUDIO_KICK(dma_ch), + PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch + - 1) | + PS3_AUDIO_KICK_REQUEST); + } + } + /* ensure the hardware sees the change */ + wmb(); + spin_unlock_irqrestore(&card->dma_lock, irqsave); + + return 0; +} + +/* + * audio mute on/off + * mute_on : 0 output enabled + * 1 mute + */ +static int snd_ps3_mute(int mute_on) +{ + return ps3av_audio_mute(mute_on); +} + +/* + * PCM operators + */ +static int snd_ps3_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); + int pcm_index; + + pcm_index = substream->pcm->device; + /* to retrieve substream/runtime in interrupt handler */ + card->substream = substream; + + runtime->hw = snd_ps3_pcm_hw; + + card->start_delay = snd_ps3_start_delay; + + /* mute off */ + snd_ps3_mute(0); /* this function sleep */ + + snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, + PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2); + return 0; +}; + +static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + size_t size; + + /* alloc transport buffer */ + size = params_buffer_bytes(hw_params); + snd_pcm_lib_malloc_pages(substream, size); + return 0; +}; + +static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream, + unsigned int delay_ms) +{ + int ret; + int rate ; + + rate = substream->runtime->rate; + ret = snd_pcm_format_size(substream->runtime->format, + rate * delay_ms / 1000) + * substream->runtime->channels; + + pr_debug(KERN_ERR "%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n", + __func__, + delay_ms, + rate, + snd_pcm_format_size(substream->runtime->format, rate), + rate * delay_ms / 1000, + ret); + + return ret; +}; + +static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); + unsigned long irqsave; + + if (!snd_ps3_set_avsetting(substream)) { + /* some parameter changed */ + write_reg(PS3_AUDIO_AX_IE, + PS3_AUDIO_AX_IE_ASOBEIE(0) | + PS3_AUDIO_AX_IE_ASOBUIE(0)); + /* + * let SPDIF device re-lock with SPDIF signal, + * start with some silence + */ + card->silent = snd_ps3_delay_to_bytes(substream, + card->start_delay) / + (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */ + } + + /* restart ring buffer pointer */ + spin_lock_irqsave(&card->dma_lock, irqsave); + { + card->dma_buffer_size = runtime->dma_bytes; + + card->dma_last_transfer_vaddr[SND_PS3_CH_L] = + card->dma_next_transfer_vaddr[SND_PS3_CH_L] = + card->dma_start_vaddr[SND_PS3_CH_L] = + runtime->dma_area; + card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr; + + card->dma_last_transfer_vaddr[SND_PS3_CH_R] = + card->dma_next_transfer_vaddr[SND_PS3_CH_R] = + card->dma_start_vaddr[SND_PS3_CH_R] = + runtime->dma_area + (runtime->dma_bytes / 2); + card->dma_start_bus_addr[SND_PS3_CH_R] = + runtime->dma_addr + (runtime->dma_bytes / 2); + + pr_debug("%s: vaddr=%p bus=%#lx\n", __func__, + card->dma_start_vaddr[SND_PS3_CH_L], + card->dma_start_bus_addr[SND_PS3_CH_L]); + + } + spin_unlock_irqrestore(&card->dma_lock, irqsave); + + /* ensure the hardware sees the change */ + mb(); + + return 0; +}; + +static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + /* clear outstanding interrupts */ + update_reg(PS3_AUDIO_AX_IS, 0); + + spin_lock(&card->dma_lock); + { + card->running = 1; + } + spin_unlock(&card->dma_lock); + + snd_ps3_program_dma(card, + SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); + snd_ps3_kick_dma(card); + while (read_reg(PS3_AUDIO_KICK(7)) & + PS3_AUDIO_KICK_STATUS_MASK) { + udelay(1); + } + snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); + snd_ps3_kick_dma(card); + break; + + case SNDRV_PCM_TRIGGER_STOP: + spin_lock(&card->dma_lock); + { + card->running = 0; + } + spin_unlock(&card->dma_lock); + snd_ps3_wait_for_dma_stop(card); + break; + default: + break; + + } + + return ret; +}; + +/* + * report current pointer + */ +static snd_pcm_uframes_t snd_ps3_pcm_pointer( + struct snd_pcm_substream *substream) +{ + struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); + size_t bytes; + snd_pcm_uframes_t ret; + + spin_lock(&card->dma_lock); + { + bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] - + card->dma_start_vaddr[SND_PS3_CH_L]); + } + spin_unlock(&card->dma_lock); + + ret = bytes_to_frames(substream->runtime, bytes * 2); + + 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; + + 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; + + 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; + } + + if ((card->avs.avs_audio_width != avs.avs_audio_width) || + (card->avs.avs_audio_rate != avs.avs_audio_rate)) { + card->avs = avs; + snd_ps3_change_avsetting(card); + + pr_debug("%s: after freq=%d width=%d\n", __func__, + card->avs.avs_audio_rate, card->avs.avs_audio_width); + + return 0; + } else + return 1; +} + + + +static int snd_ps3_map_mmio(void) +{ + the_card.mapped_mmio_vaddr = + ioremap(the_card.ps3_dev->m_region->bus_addr, + the_card.ps3_dev->m_region->len); + + if (!the_card.mapped_mmio_vaddr) { + pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n", + __func__, the_card.ps3_dev->m_region->lpar_addr, + the_card.ps3_dev->m_region->len); + return -ENXIO; + } + + return 0; +}; + +static void snd_ps3_unmap_mmio(void) +{ + iounmap(the_card.mapped_mmio_vaddr); + the_card.mapped_mmio_vaddr = NULL; +} + +static int snd_ps3_allocate_irq(void) +{ + int ret; + u64 lpar_addr, lpar_size; + u64 __iomem *mapped; + + /* FIXME: move this to device_init (H/W probe) */ + + /* get irq outlet */ + ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size); + if (ret) { + pr_info("%s: device map 1 failed %d\n", __func__, + ret); + return -ENXIO; + } + + mapped = ioremap(lpar_addr, lpar_size); + if (!mapped) { + pr_info("%s: ioremap 1 failed \n", __func__); + return -ENXIO; + } + + the_card.audio_irq_outlet = in_be64(mapped); + + iounmap(mapped); + ret = lv1_gpu_device_unmap(1); + if (ret) + pr_info("%s: unmap 1 failed\n", __func__); + + /* irq */ + ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, + the_card.audio_irq_outlet, + &the_card.irq_no); + if (ret) { + pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret); + return ret; + } + + ret = request_irq(the_card.irq_no, snd_ps3_interrupt, IRQF_DISABLED, + SND_PS3_DRIVER_NAME, &the_card); + if (ret) { + pr_info("%s: request_irq failed (%d)\n", __func__, ret); + goto cleanup_irq; + } + + return 0; + + cleanup_irq: + ps3_irq_plug_destroy(the_card.irq_no); + return ret; +}; + +static void snd_ps3_free_irq(void) +{ + free_irq(the_card.irq_no, &the_card); + ps3_irq_plug_destroy(the_card.irq_no); +} + +static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start) +{ + uint64_t val; + int ret; + + val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) | + (0x03UL << 24) | + (0x0fUL << 12) | + (PS3_AUDIO_IOID); + + ret = lv1_gpu_attribute(0x100, 0x007, val, 0, 0); + if (ret) + pr_info("%s: gpu_attribute failed %d\n", __func__, + ret); +} + +static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev) +{ + int ret; + u64 lpar_addr, lpar_size; + + BUG_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1)); + BUG_ON(dev->match_id != PS3_MATCH_ID_SOUND); + + the_card.ps3_dev = dev; + + ret = ps3_open_hv_device(dev); + + if (ret) + return -ENXIO; + + /* setup MMIO */ + ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size); + if (ret) { + pr_info("%s: device map 2 failed %d\n", __func__, ret); + goto clean_open; + } + ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size, + PAGE_SHIFT); + + ret = snd_ps3_map_mmio(); + if (ret) + goto clean_dev_map; + + /* setup DMA area */ + ps3_dma_region_init(dev, dev->d_region, + PAGE_SHIFT, /* use system page size */ + 0, /* dma type; not used */ + NULL, + _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE)); + dev->d_region->ioid = PS3_AUDIO_IOID; + + ret = ps3_dma_region_create(dev->d_region); + if (ret) { + pr_info("%s: region_create\n", __func__); + goto clean_mmio; + } + + snd_ps3_audio_set_base_addr(dev->d_region->bus_addr); + + /* CONFIG_SND_PS3_DEFAULT_START_DELAY */ + the_card.start_delay = snd_ps3_start_delay; + + /* irq */ + if (snd_ps3_allocate_irq()) { + ret = -ENXIO; + goto clean_dma_region; + } + + /* create card instance */ + the_card.card = snd_card_new(index, id, THIS_MODULE, 0); + if (!the_card.card) { + ret = -ENXIO; + goto clean_irq; + } + + strcpy(the_card.card->driver, "PS3"); + strcpy(the_card.card->shortname, "PS3"); + strcpy(the_card.card->longname, "PS3 sound"); + /* create PCM devices instance */ + /* NOTE:this driver works assuming pcm:substream = 1:1 */ + ret = snd_pcm_new(the_card.card, + "SPDIF", + 0, /* instance index, will be stored pcm.device*/ + 1, /* output substream */ + 0, /* input substream */ + &(the_card.pcm)); + if (ret) + goto clean_card; + + the_card.pcm->private_data = &the_card; + strcpy(the_card.pcm->name, "SPDIF"); + + /* set pcm ops */ + snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK, + &snd_ps3_pcm_spdif_ops); + + the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED; + /* pre-alloc PCM DMA buffer*/ + ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm, + SNDRV_DMA_TYPE_DEV, + &dev->core, + SND_PS3_PCM_PREALLOC_SIZE, + SND_PS3_PCM_PREALLOC_SIZE); + if (ret < 0) { + pr_info("%s: prealloc failed\n", __func__); + goto clean_card; + } + + /* + * allocate null buffer + * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2 + * PAGE_SIZE is enogh + */ + if (!(the_card.null_buffer_start_vaddr = + dma_alloc_coherent(&the_card.ps3_dev->core, + PAGE_SIZE, + &the_card.null_buffer_start_dma_addr, + GFP_KERNEL))) { + pr_info("%s: nullbuffer alloc failed\n", __func__); + goto clean_preallocate; + } + pr_debug("%s: null vaddr=%p dma=%#lx\n", __func__, + the_card.null_buffer_start_vaddr, + the_card.null_buffer_start_dma_addr); + /* set default sample rate/word width */ + snd_ps3_init_avsetting(&the_card); + + /* register the card */ + ret = snd_card_register(the_card.card); + if (ret < 0) + goto clean_dma_map; + + pr_info("%s started. start_delay=%dms\n", + the_card.card->longname, the_card.start_delay); + return 0; + +clean_dma_map: + dma_free_coherent(&the_card.ps3_dev->core, + PAGE_SIZE, + the_card.null_buffer_start_vaddr, + the_card.null_buffer_start_dma_addr); +clean_preallocate: + snd_pcm_lib_preallocate_free_for_all(the_card.pcm); +clean_card: + snd_card_free(the_card.card); +clean_irq: + snd_ps3_free_irq(); +clean_dma_region: + ps3_dma_region_free(dev->d_region); +clean_mmio: + snd_ps3_unmap_mmio(); +clean_dev_map: + lv1_gpu_device_unmap(2); +clean_open: + ps3_close_hv_device(dev); + /* + * there is no destructor function to pcm. + * midlayer automatically releases if the card removed + */ + return ret; +}; /* snd_ps3_probe */ + +/* called when module removal */ +static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev) +{ + int ret; + pr_info("%s:start id=%d\n", __func__, dev->match_id); + if (dev->match_id != PS3_MATCH_ID_SOUND) + return -ENXIO; + + /* + * ctl and preallocate buffer will be freed in + * snd_card_free + */ + ret = snd_card_free(the_card.card); + if (ret) + pr_info("%s: ctl freecard=%d\n", __func__, ret); + + dma_free_coherent(&dev->core, + PAGE_SIZE, + the_card.null_buffer_start_vaddr, + the_card.null_buffer_start_dma_addr); + + ps3_dma_region_free(dev->d_region); + + snd_ps3_free_irq(); + snd_ps3_unmap_mmio(); + + lv1_gpu_device_unmap(2); + ps3_close_hv_device(dev); + pr_info("%s:end id=%d\n", __func__, dev->match_id); + return 0; +} /* snd_ps3_remove */ + +static struct ps3_system_bus_driver snd_ps3_bus_driver_info = { + .match_id = PS3_MATCH_ID_SOUND, + .probe = snd_ps3_driver_probe, + .remove = snd_ps3_driver_remove, + .shutdown = snd_ps3_driver_remove, + .core = { + .name = SND_PS3_DRIVER_NAME, + .owner = THIS_MODULE, + }, +}; + + +/* + * 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) +{ + int ret; + + if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) + return -ENXIO; + + memset(&the_card, 0, sizeof(the_card)); + spin_lock_init(&the_card.dma_lock); + + /* register systembus DRIVER, this calls our probe() func */ + ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info); + + return ret; +} + +static void __exit snd_ps3_exit(void) +{ + ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info); +} + +MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND); |
