diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/mips/hal2.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/mips/hal2.c | 938 |
1 files changed, 0 insertions, 938 deletions
diff --git a/ANDROID_3.4.5/sound/mips/hal2.c b/ANDROID_3.4.5/sound/mips/hal2.c deleted file mode 100644 index 5f88d1f0..00000000 --- a/ANDROID_3.4.5/sound/mips/hal2.c +++ /dev/null @@ -1,938 +0,0 @@ -/* - * Driver for A2 audio system used in SGI machines - * Copyright (c) 2008 Thomas Bogendoerfer <tsbogend@alpha.fanken.de> - * - * Based on OSS code from Ladislav Michl <ladis@linux-mips.org>, which - * was based on code from Ulf Carlsson - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/dma-mapping.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/slab.h> -#include <linux/module.h> - -#include <asm/sgi/hpc3.h> -#include <asm/sgi/ip22.h> - -#include <sound/core.h> -#include <sound/control.h> -#include <sound/pcm.h> -#include <sound/pcm-indirect.h> -#include <sound/initval.h> - -#include "hal2.h" - -static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ -static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ - -module_param(index, int, 0444); -MODULE_PARM_DESC(index, "Index value for SGI HAL2 soundcard."); -module_param(id, charp, 0444); -MODULE_PARM_DESC(id, "ID string for SGI HAL2 soundcard."); -MODULE_DESCRIPTION("ALSA driver for SGI HAL2 audio"); -MODULE_AUTHOR("Thomas Bogendoerfer"); -MODULE_LICENSE("GPL"); - - -#define H2_BLOCK_SIZE 1024 -#define H2_BUF_SIZE 16384 - -struct hal2_pbus { - struct hpc3_pbus_dmacregs *pbus; - int pbusnr; - unsigned int ctrl; /* Current state of pbus->pbdma_ctrl */ -}; - -struct hal2_desc { - struct hpc_dma_desc desc; - u32 pad; /* padding */ -}; - -struct hal2_codec { - struct snd_pcm_indirect pcm_indirect; - struct snd_pcm_substream *substream; - - unsigned char *buffer; - dma_addr_t buffer_dma; - struct hal2_desc *desc; - dma_addr_t desc_dma; - int desc_count; - struct hal2_pbus pbus; - int voices; /* mono/stereo */ - unsigned int sample_rate; - unsigned int master; /* Master frequency */ - unsigned short mod; /* MOD value */ - unsigned short inc; /* INC value */ -}; - -#define H2_MIX_OUTPUT_ATT 0 -#define H2_MIX_INPUT_GAIN 1 - -struct snd_hal2 { - struct snd_card *card; - - struct hal2_ctl_regs *ctl_regs; /* HAL2 ctl registers */ - struct hal2_aes_regs *aes_regs; /* HAL2 aes registers */ - struct hal2_vol_regs *vol_regs; /* HAL2 vol registers */ - struct hal2_syn_regs *syn_regs; /* HAL2 syn registers */ - - struct hal2_codec dac; - struct hal2_codec adc; -}; - -#define H2_INDIRECT_WAIT(regs) while (hal2_read(®s->isr) & H2_ISR_TSTATUS); - -#define H2_READ_ADDR(addr) (addr | (1<<7)) -#define H2_WRITE_ADDR(addr) (addr) - -static inline u32 hal2_read(u32 *reg) -{ - return __raw_readl(reg); -} - -static inline void hal2_write(u32 val, u32 *reg) -{ - __raw_writel(val, reg); -} - - -static u32 hal2_i_read32(struct snd_hal2 *hal2, u16 addr) -{ - u32 ret; - struct hal2_ctl_regs *regs = hal2->ctl_regs; - - hal2_write(H2_READ_ADDR(addr), ®s->iar); - H2_INDIRECT_WAIT(regs); - ret = hal2_read(®s->idr0) & 0xffff; - hal2_write(H2_READ_ADDR(addr) | 0x1, ®s->iar); - H2_INDIRECT_WAIT(regs); - ret |= (hal2_read(®s->idr0) & 0xffff) << 16; - return ret; -} - -static void hal2_i_write16(struct snd_hal2 *hal2, u16 addr, u16 val) -{ - struct hal2_ctl_regs *regs = hal2->ctl_regs; - - hal2_write(val, ®s->idr0); - hal2_write(0, ®s->idr1); - hal2_write(0, ®s->idr2); - hal2_write(0, ®s->idr3); - hal2_write(H2_WRITE_ADDR(addr), ®s->iar); - H2_INDIRECT_WAIT(regs); -} - -static void hal2_i_write32(struct snd_hal2 *hal2, u16 addr, u32 val) -{ - struct hal2_ctl_regs *regs = hal2->ctl_regs; - - hal2_write(val & 0xffff, ®s->idr0); - hal2_write(val >> 16, ®s->idr1); - hal2_write(0, ®s->idr2); - hal2_write(0, ®s->idr3); - hal2_write(H2_WRITE_ADDR(addr), ®s->iar); - H2_INDIRECT_WAIT(regs); -} - -static void hal2_i_setbit16(struct snd_hal2 *hal2, u16 addr, u16 bit) -{ - struct hal2_ctl_regs *regs = hal2->ctl_regs; - - hal2_write(H2_READ_ADDR(addr), ®s->iar); - H2_INDIRECT_WAIT(regs); - hal2_write((hal2_read(®s->idr0) & 0xffff) | bit, ®s->idr0); - hal2_write(0, ®s->idr1); - hal2_write(0, ®s->idr2); - hal2_write(0, ®s->idr3); - hal2_write(H2_WRITE_ADDR(addr), ®s->iar); - H2_INDIRECT_WAIT(regs); -} - -static void hal2_i_clearbit16(struct snd_hal2 *hal2, u16 addr, u16 bit) -{ - struct hal2_ctl_regs *regs = hal2->ctl_regs; - - hal2_write(H2_READ_ADDR(addr), ®s->iar); - H2_INDIRECT_WAIT(regs); - hal2_write((hal2_read(®s->idr0) & 0xffff) & ~bit, ®s->idr0); - hal2_write(0, ®s->idr1); - hal2_write(0, ®s->idr2); - hal2_write(0, ®s->idr3); - hal2_write(H2_WRITE_ADDR(addr), ®s->iar); - H2_INDIRECT_WAIT(regs); -} - -static int hal2_gain_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - uinfo->count = 2; - uinfo->value.integer.min = 0; - switch ((int)kcontrol->private_value) { - case H2_MIX_OUTPUT_ATT: - uinfo->value.integer.max = 31; - break; - case H2_MIX_INPUT_GAIN: - uinfo->value.integer.max = 15; - break; - } - return 0; -} - -static int hal2_gain_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_hal2 *hal2 = snd_kcontrol_chip(kcontrol); - u32 tmp; - int l, r; - - switch ((int)kcontrol->private_value) { - case H2_MIX_OUTPUT_ATT: - tmp = hal2_i_read32(hal2, H2I_DAC_C2); - if (tmp & H2I_C2_MUTE) { - l = 0; - r = 0; - } else { - l = 31 - ((tmp >> H2I_C2_L_ATT_SHIFT) & 31); - r = 31 - ((tmp >> H2I_C2_R_ATT_SHIFT) & 31); - } - break; - case H2_MIX_INPUT_GAIN: - tmp = hal2_i_read32(hal2, H2I_ADC_C2); - l = (tmp >> H2I_C2_L_GAIN_SHIFT) & 15; - r = (tmp >> H2I_C2_R_GAIN_SHIFT) & 15; - break; - } - ucontrol->value.integer.value[0] = l; - ucontrol->value.integer.value[1] = r; - - return 0; -} - -static int hal2_gain_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_hal2 *hal2 = snd_kcontrol_chip(kcontrol); - u32 old, new; - int l, r; - - l = ucontrol->value.integer.value[0]; - r = ucontrol->value.integer.value[1]; - - switch ((int)kcontrol->private_value) { - case H2_MIX_OUTPUT_ATT: - old = hal2_i_read32(hal2, H2I_DAC_C2); - new = old & ~(H2I_C2_L_ATT_M | H2I_C2_R_ATT_M | H2I_C2_MUTE); - if (l | r) { - l = 31 - l; - r = 31 - r; - new |= (l << H2I_C2_L_ATT_SHIFT); - new |= (r << H2I_C2_R_ATT_SHIFT); - } else - new |= H2I_C2_L_ATT_M | H2I_C2_R_ATT_M | H2I_C2_MUTE; - hal2_i_write32(hal2, H2I_DAC_C2, new); - break; - case H2_MIX_INPUT_GAIN: - old = hal2_i_read32(hal2, H2I_ADC_C2); - new = old & ~(H2I_C2_L_GAIN_M | H2I_C2_R_GAIN_M); - new |= (l << H2I_C2_L_GAIN_SHIFT); - new |= (r << H2I_C2_R_GAIN_SHIFT); - hal2_i_write32(hal2, H2I_ADC_C2, new); - break; - } - return old != new; -} - -static struct snd_kcontrol_new hal2_ctrl_headphone __devinitdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Headphone Playback Volume", - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .private_value = H2_MIX_OUTPUT_ATT, - .info = hal2_gain_info, - .get = hal2_gain_get, - .put = hal2_gain_put, -}; - -static struct snd_kcontrol_new hal2_ctrl_mic __devinitdata = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "Mic Capture Volume", - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .private_value = H2_MIX_INPUT_GAIN, - .info = hal2_gain_info, - .get = hal2_gain_get, - .put = hal2_gain_put, -}; - -static int __devinit hal2_mixer_create(struct snd_hal2 *hal2) -{ - int err; - - /* mute DAC */ - hal2_i_write32(hal2, H2I_DAC_C2, - H2I_C2_L_ATT_M | H2I_C2_R_ATT_M | H2I_C2_MUTE); - /* mute ADC */ - hal2_i_write32(hal2, H2I_ADC_C2, 0); - - err = snd_ctl_add(hal2->card, - snd_ctl_new1(&hal2_ctrl_headphone, hal2)); - if (err < 0) - return err; - - err = snd_ctl_add(hal2->card, - snd_ctl_new1(&hal2_ctrl_mic, hal2)); - if (err < 0) - return err; - - return 0; -} - -static irqreturn_t hal2_interrupt(int irq, void *dev_id) -{ - struct snd_hal2 *hal2 = dev_id; - irqreturn_t ret = IRQ_NONE; - - /* decide what caused this interrupt */ - if (hal2->dac.pbus.pbus->pbdma_ctrl & HPC3_PDMACTRL_INT) { - snd_pcm_period_elapsed(hal2->dac.substream); - ret = IRQ_HANDLED; - } - if (hal2->adc.pbus.pbus->pbdma_ctrl & HPC3_PDMACTRL_INT) { - snd_pcm_period_elapsed(hal2->adc.substream); - ret = IRQ_HANDLED; - } - return ret; -} - -static int hal2_compute_rate(struct hal2_codec *codec, unsigned int rate) -{ - unsigned short mod; - - if (44100 % rate < 48000 % rate) { - mod = 4 * 44100 / rate; - codec->master = 44100; - } else { - mod = 4 * 48000 / rate; - codec->master = 48000; - } - - codec->inc = 4; - codec->mod = mod; - rate = 4 * codec->master / mod; - - return rate; -} - -static void hal2_set_dac_rate(struct snd_hal2 *hal2) -{ - unsigned int master = hal2->dac.master; - int inc = hal2->dac.inc; - int mod = hal2->dac.mod; - - hal2_i_write16(hal2, H2I_BRES1_C1, (master == 44100) ? 1 : 0); - hal2_i_write32(hal2, H2I_BRES1_C2, - ((0xffff & (inc - mod - 1)) << 16) | inc); -} - -static void hal2_set_adc_rate(struct snd_hal2 *hal2) -{ - unsigned int master = hal2->adc.master; - int inc = hal2->adc.inc; - int mod = hal2->adc.mod; - - hal2_i_write16(hal2, H2I_BRES2_C1, (master == 44100) ? 1 : 0); - hal2_i_write32(hal2, H2I_BRES2_C2, - ((0xffff & (inc - mod - 1)) << 16) | inc); -} - -static void hal2_setup_dac(struct snd_hal2 *hal2) -{ - unsigned int fifobeg, fifoend, highwater, sample_size; - struct hal2_pbus *pbus = &hal2->dac.pbus; - - /* Now we set up some PBUS information. The PBUS needs information about - * what portion of the fifo it will use. If it's receiving or - * transmitting, and finally whether the stream is little endian or big - * endian. The information is written later, on the start call. - */ - sample_size = 2 * hal2->dac.voices; - /* Fifo should be set to hold exactly four samples. Highwater mark - * should be set to two samples. */ - highwater = (sample_size * 2) >> 1; /* halfwords */ - fifobeg = 0; /* playback is first */ - fifoend = (sample_size * 4) >> 3; /* doublewords */ - pbus->ctrl = HPC3_PDMACTRL_RT | HPC3_PDMACTRL_LD | - (highwater << 8) | (fifobeg << 16) | (fifoend << 24); - /* We disable everything before we do anything at all */ - pbus->pbus->pbdma_ctrl = HPC3_PDMACTRL_LD; - hal2_i_clearbit16(hal2, H2I_DMA_PORT_EN, H2I_DMA_PORT_EN_CODECTX); - /* Setup the HAL2 for playback */ - hal2_set_dac_rate(hal2); - /* Set endianess */ - hal2_i_clearbit16(hal2, H2I_DMA_END, H2I_DMA_END_CODECTX); - /* Set DMA bus */ - hal2_i_setbit16(hal2, H2I_DMA_DRV, (1 << pbus->pbusnr)); - /* We are using 1st Bresenham clock generator for playback */ - hal2_i_write16(hal2, H2I_DAC_C1, (pbus->pbusnr << H2I_C1_DMA_SHIFT) - | (1 << H2I_C1_CLKID_SHIFT) - | (hal2->dac.voices << H2I_C1_DATAT_SHIFT)); -} - -static void hal2_setup_adc(struct snd_hal2 *hal2) -{ - unsigned int fifobeg, fifoend, highwater, sample_size; - struct hal2_pbus *pbus = &hal2->adc.pbus; - - sample_size = 2 * hal2->adc.voices; - highwater = (sample_size * 2) >> 1; /* halfwords */ - fifobeg = (4 * 4) >> 3; /* record is second */ - fifoend = (4 * 4 + sample_size * 4) >> 3; /* doublewords */ - pbus->ctrl = HPC3_PDMACTRL_RT | HPC3_PDMACTRL_RCV | HPC3_PDMACTRL_LD | - (highwater << 8) | (fifobeg << 16) | (fifoend << 24); - pbus->pbus->pbdma_ctrl = HPC3_PDMACTRL_LD; - hal2_i_clearbit16(hal2, H2I_DMA_PORT_EN, H2I_DMA_PORT_EN_CODECR); - /* Setup the HAL2 for record */ - hal2_set_adc_rate(hal2); - /* Set endianess */ - hal2_i_clearbit16(hal2, H2I_DMA_END, H2I_DMA_END_CODECR); - /* Set DMA bus */ - hal2_i_setbit16(hal2, H2I_DMA_DRV, (1 << pbus->pbusnr)); - /* We are using 2nd Bresenham clock generator for record */ - hal2_i_write16(hal2, H2I_ADC_C1, (pbus->pbusnr << H2I_C1_DMA_SHIFT) - | (2 << H2I_C1_CLKID_SHIFT) - | (hal2->adc.voices << H2I_C1_DATAT_SHIFT)); -} - -static void hal2_start_dac(struct snd_hal2 *hal2) -{ - struct hal2_pbus *pbus = &hal2->dac.pbus; - - pbus->pbus->pbdma_dptr = hal2->dac.desc_dma; - pbus->pbus->pbdma_ctrl = pbus->ctrl | HPC3_PDMACTRL_ACT; - /* enable DAC */ - hal2_i_setbit16(hal2, H2I_DMA_PORT_EN, H2I_DMA_PORT_EN_CODECTX); -} - -static void hal2_start_adc(struct snd_hal2 *hal2) -{ - struct hal2_pbus *pbus = &hal2->adc.pbus; - - pbus->pbus->pbdma_dptr = hal2->adc.desc_dma; - pbus->pbus->pbdma_ctrl = pbus->ctrl | HPC3_PDMACTRL_ACT; - /* enable ADC */ - hal2_i_setbit16(hal2, H2I_DMA_PORT_EN, H2I_DMA_PORT_EN_CODECR); -} - -static inline void hal2_stop_dac(struct snd_hal2 *hal2) -{ - hal2->dac.pbus.pbus->pbdma_ctrl = HPC3_PDMACTRL_LD; - /* The HAL2 itself may remain enabled safely */ -} - -static inline void hal2_stop_adc(struct snd_hal2 *hal2) -{ - hal2->adc.pbus.pbus->pbdma_ctrl = HPC3_PDMACTRL_LD; -} - -static int hal2_alloc_dmabuf(struct hal2_codec *codec) -{ - struct hal2_desc *desc; - dma_addr_t desc_dma, buffer_dma; - int count = H2_BUF_SIZE / H2_BLOCK_SIZE; - int i; - - codec->buffer = dma_alloc_noncoherent(NULL, H2_BUF_SIZE, - &buffer_dma, GFP_KERNEL); - if (!codec->buffer) - return -ENOMEM; - desc = dma_alloc_noncoherent(NULL, count * sizeof(struct hal2_desc), - &desc_dma, GFP_KERNEL); - if (!desc) { - dma_free_noncoherent(NULL, H2_BUF_SIZE, - codec->buffer, buffer_dma); - return -ENOMEM; - } - codec->buffer_dma = buffer_dma; - codec->desc_dma = desc_dma; - codec->desc = desc; - for (i = 0; i < count; i++) { - desc->desc.pbuf = buffer_dma + i * H2_BLOCK_SIZE; - desc->desc.cntinfo = HPCDMA_XIE | H2_BLOCK_SIZE; - desc->desc.pnext = (i == count - 1) ? - desc_dma : desc_dma + (i + 1) * sizeof(struct hal2_desc); - desc++; - } - dma_cache_sync(NULL, codec->desc, count * sizeof(struct hal2_desc), - DMA_TO_DEVICE); - codec->desc_count = count; - return 0; -} - -static void hal2_free_dmabuf(struct hal2_codec *codec) -{ - dma_free_noncoherent(NULL, codec->desc_count * sizeof(struct hal2_desc), - codec->desc, codec->desc_dma); - dma_free_noncoherent(NULL, H2_BUF_SIZE, codec->buffer, - codec->buffer_dma); -} - -static struct snd_pcm_hardware hal2_pcm_hw = { - .info = (SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_MMAP_VALID | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_BLOCK_TRANSFER), - .formats = SNDRV_PCM_FMTBIT_S16_BE, - .rates = SNDRV_PCM_RATE_8000_48000, - .rate_min = 8000, - .rate_max = 48000, - .channels_min = 2, - .channels_max = 2, - .buffer_bytes_max = 65536, - .period_bytes_min = 1024, - .period_bytes_max = 65536, - .periods_min = 2, - .periods_max = 1024, -}; - -static int hal2_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) -{ - int err; - - err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); - if (err < 0) - return err; - - return 0; -} - -static int hal2_pcm_hw_free(struct snd_pcm_substream *substream) -{ - return snd_pcm_lib_free_pages(substream); -} - -static int hal2_playback_open(struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - int err; - - runtime->hw = hal2_pcm_hw; - - err = hal2_alloc_dmabuf(&hal2->dac); - if (err) - return err; - return 0; -} - -static int hal2_playback_close(struct snd_pcm_substream *substream) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - - hal2_free_dmabuf(&hal2->dac); - return 0; -} - -static int hal2_playback_prepare(struct snd_pcm_substream *substream) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - struct hal2_codec *dac = &hal2->dac; - - dac->voices = runtime->channels; - dac->sample_rate = hal2_compute_rate(dac, runtime->rate); - memset(&dac->pcm_indirect, 0, sizeof(dac->pcm_indirect)); - dac->pcm_indirect.hw_buffer_size = H2_BUF_SIZE; - dac->pcm_indirect.sw_buffer_size = snd_pcm_lib_buffer_bytes(substream); - dac->substream = substream; - hal2_setup_dac(hal2); - return 0; -} - -static int hal2_playback_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - hal2->dac.pcm_indirect.hw_io = hal2->dac.buffer_dma; - hal2->dac.pcm_indirect.hw_data = 0; - substream->ops->ack(substream); - hal2_start_dac(hal2); - break; - case SNDRV_PCM_TRIGGER_STOP: - hal2_stop_dac(hal2); - break; - default: - return -EINVAL; - } - return 0; -} - -static snd_pcm_uframes_t -hal2_playback_pointer(struct snd_pcm_substream *substream) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - struct hal2_codec *dac = &hal2->dac; - - return snd_pcm_indirect_playback_pointer(substream, &dac->pcm_indirect, - dac->pbus.pbus->pbdma_bptr); -} - -static void hal2_playback_transfer(struct snd_pcm_substream *substream, - struct snd_pcm_indirect *rec, size_t bytes) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - unsigned char *buf = hal2->dac.buffer + rec->hw_data; - - memcpy(buf, substream->runtime->dma_area + rec->sw_data, bytes); - dma_cache_sync(NULL, buf, bytes, DMA_TO_DEVICE); - -} - -static int hal2_playback_ack(struct snd_pcm_substream *substream) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - struct hal2_codec *dac = &hal2->dac; - - dac->pcm_indirect.hw_queue_size = H2_BUF_SIZE / 2; - snd_pcm_indirect_playback_transfer(substream, - &dac->pcm_indirect, - hal2_playback_transfer); - return 0; -} - -static int hal2_capture_open(struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - struct hal2_codec *adc = &hal2->adc; - int err; - - runtime->hw = hal2_pcm_hw; - - err = hal2_alloc_dmabuf(adc); - if (err) - return err; - return 0; -} - -static int hal2_capture_close(struct snd_pcm_substream *substream) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - - hal2_free_dmabuf(&hal2->adc); - return 0; -} - -static int hal2_capture_prepare(struct snd_pcm_substream *substream) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - struct hal2_codec *adc = &hal2->adc; - - adc->voices = runtime->channels; - adc->sample_rate = hal2_compute_rate(adc, runtime->rate); - memset(&adc->pcm_indirect, 0, sizeof(adc->pcm_indirect)); - adc->pcm_indirect.hw_buffer_size = H2_BUF_SIZE; - adc->pcm_indirect.hw_queue_size = H2_BUF_SIZE / 2; - adc->pcm_indirect.sw_buffer_size = snd_pcm_lib_buffer_bytes(substream); - adc->substream = substream; - hal2_setup_adc(hal2); - return 0; -} - -static int hal2_capture_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - hal2->adc.pcm_indirect.hw_io = hal2->adc.buffer_dma; - hal2->adc.pcm_indirect.hw_data = 0; - printk(KERN_DEBUG "buffer_dma %x\n", hal2->adc.buffer_dma); - hal2_start_adc(hal2); - break; - case SNDRV_PCM_TRIGGER_STOP: - hal2_stop_adc(hal2); - break; - default: - return -EINVAL; - } - return 0; -} - -static snd_pcm_uframes_t -hal2_capture_pointer(struct snd_pcm_substream *substream) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - struct hal2_codec *adc = &hal2->adc; - - return snd_pcm_indirect_capture_pointer(substream, &adc->pcm_indirect, - adc->pbus.pbus->pbdma_bptr); -} - -static void hal2_capture_transfer(struct snd_pcm_substream *substream, - struct snd_pcm_indirect *rec, size_t bytes) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - unsigned char *buf = hal2->adc.buffer + rec->hw_data; - - dma_cache_sync(NULL, buf, bytes, DMA_FROM_DEVICE); - memcpy(substream->runtime->dma_area + rec->sw_data, buf, bytes); -} - -static int hal2_capture_ack(struct snd_pcm_substream *substream) -{ - struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream); - struct hal2_codec *adc = &hal2->adc; - - snd_pcm_indirect_capture_transfer(substream, - &adc->pcm_indirect, - hal2_capture_transfer); - return 0; -} - -static struct snd_pcm_ops hal2_playback_ops = { - .open = hal2_playback_open, - .close = hal2_playback_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = hal2_pcm_hw_params, - .hw_free = hal2_pcm_hw_free, - .prepare = hal2_playback_prepare, - .trigger = hal2_playback_trigger, - .pointer = hal2_playback_pointer, - .ack = hal2_playback_ack, -}; - -static struct snd_pcm_ops hal2_capture_ops = { - .open = hal2_capture_open, - .close = hal2_capture_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = hal2_pcm_hw_params, - .hw_free = hal2_pcm_hw_free, - .prepare = hal2_capture_prepare, - .trigger = hal2_capture_trigger, - .pointer = hal2_capture_pointer, - .ack = hal2_capture_ack, -}; - -static int __devinit hal2_pcm_create(struct snd_hal2 *hal2) -{ - struct snd_pcm *pcm; - int err; - - /* create first pcm device with one outputs and one input */ - err = snd_pcm_new(hal2->card, "SGI HAL2 Audio", 0, 1, 1, &pcm); - if (err < 0) - return err; - - pcm->private_data = hal2; - strcpy(pcm->name, "SGI HAL2"); - - /* set operators */ - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, - &hal2_playback_ops); - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, - &hal2_capture_ops); - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, - snd_dma_continuous_data(GFP_KERNEL), - 0, 1024 * 1024); - - return 0; -} - -static int hal2_dev_free(struct snd_device *device) -{ - struct snd_hal2 *hal2 = device->device_data; - - free_irq(SGI_HPCDMA_IRQ, hal2); - kfree(hal2); - return 0; -} - -static struct snd_device_ops hal2_ops = { - .dev_free = hal2_dev_free, -}; - -static void hal2_init_codec(struct hal2_codec *codec, struct hpc3_regs *hpc3, - int index) -{ - codec->pbus.pbusnr = index; - codec->pbus.pbus = &hpc3->pbdma[index]; -} - -static int hal2_detect(struct snd_hal2 *hal2) -{ - unsigned short board, major, minor; - unsigned short rev; - - /* reset HAL2 */ - hal2_write(0, &hal2->ctl_regs->isr); - - /* release reset */ - hal2_write(H2_ISR_GLOBAL_RESET_N | H2_ISR_CODEC_RESET_N, - &hal2->ctl_regs->isr); - - - hal2_i_write16(hal2, H2I_RELAY_C, H2I_RELAY_C_STATE); - rev = hal2_read(&hal2->ctl_regs->rev); - if (rev & H2_REV_AUDIO_PRESENT) - return -ENODEV; - - board = (rev & H2_REV_BOARD_M) >> 12; - major = (rev & H2_REV_MAJOR_CHIP_M) >> 4; - minor = (rev & H2_REV_MINOR_CHIP_M); - - printk(KERN_INFO "SGI HAL2 revision %i.%i.%i\n", - board, major, minor); - - return 0; -} - -static int hal2_create(struct snd_card *card, struct snd_hal2 **rchip) -{ - struct snd_hal2 *hal2; - struct hpc3_regs *hpc3 = hpc3c0; - int err; - - hal2 = kzalloc(sizeof(struct snd_hal2), GFP_KERNEL); - if (!hal2) - return -ENOMEM; - - hal2->card = card; - - if (request_irq(SGI_HPCDMA_IRQ, hal2_interrupt, IRQF_SHARED, - "SGI HAL2", hal2)) { - printk(KERN_ERR "HAL2: Can't get irq %d\n", SGI_HPCDMA_IRQ); - kfree(hal2); - return -EAGAIN; - } - - hal2->ctl_regs = (struct hal2_ctl_regs *)hpc3->pbus_extregs[0]; - hal2->aes_regs = (struct hal2_aes_regs *)hpc3->pbus_extregs[1]; - hal2->vol_regs = (struct hal2_vol_regs *)hpc3->pbus_extregs[2]; - hal2->syn_regs = (struct hal2_syn_regs *)hpc3->pbus_extregs[3]; - - if (hal2_detect(hal2) < 0) { - kfree(hal2); - return -ENODEV; - } - - hal2_init_codec(&hal2->dac, hpc3, 0); - hal2_init_codec(&hal2->adc, hpc3, 1); - - /* - * All DMA channel interfaces in HAL2 are designed to operate with - * PBUS programmed for 2 cycles in D3, 2 cycles in D4 and 2 cycles - * in D5. HAL2 is a 16-bit device which can accept both big and little - * endian format. It assumes that even address bytes are on high - * portion of PBUS (15:8) and assumes that HPC3 is programmed to - * accept a live (unsynchronized) version of P_DREQ_N from HAL2. - */ -#define HAL2_PBUS_DMACFG ((0 << HPC3_DMACFG_D3R_SHIFT) | \ - (2 << HPC3_DMACFG_D4R_SHIFT) | \ - (2 << HPC3_DMACFG_D5R_SHIFT) | \ - (0 << HPC3_DMACFG_D3W_SHIFT) | \ - (2 << HPC3_DMACFG_D4W_SHIFT) | \ - (2 << HPC3_DMACFG_D5W_SHIFT) | \ - HPC3_DMACFG_DS16 | \ - HPC3_DMACFG_EVENHI | \ - HPC3_DMACFG_RTIME | \ - (8 << HPC3_DMACFG_BURST_SHIFT) | \ - HPC3_DMACFG_DRQLIVE) - /* - * Ignore what's mentioned in the specification and write value which - * works in The Real World (TM) - */ - hpc3->pbus_dmacfg[hal2->dac.pbus.pbusnr][0] = 0x8208844; - hpc3->pbus_dmacfg[hal2->adc.pbus.pbusnr][0] = 0x8208844; - - err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, hal2, &hal2_ops); - if (err < 0) { - free_irq(SGI_HPCDMA_IRQ, hal2); - kfree(hal2); - return err; - } - *rchip = hal2; - return 0; -} - -static int __devinit hal2_probe(struct platform_device *pdev) -{ - struct snd_card *card; - struct snd_hal2 *chip; - int err; - - err = snd_card_create(index, id, THIS_MODULE, 0, &card); - if (err < 0) - return err; - - err = hal2_create(card, &chip); - if (err < 0) { - snd_card_free(card); - return err; - } - snd_card_set_dev(card, &pdev->dev); - - err = hal2_pcm_create(chip); - if (err < 0) { - snd_card_free(card); - return err; - } - err = hal2_mixer_create(chip); - if (err < 0) { - snd_card_free(card); - return err; - } - - strcpy(card->driver, "SGI HAL2 Audio"); - strcpy(card->shortname, "SGI HAL2 Audio"); - sprintf(card->longname, "%s irq %i", - card->shortname, - SGI_HPCDMA_IRQ); - - err = snd_card_register(card); - if (err < 0) { - snd_card_free(card); - return err; - } - platform_set_drvdata(pdev, card); - return 0; -} - -static int __devexit hal2_remove(struct platform_device *pdev) -{ - struct snd_card *card = platform_get_drvdata(pdev); - - snd_card_free(card); - platform_set_drvdata(pdev, NULL); - return 0; -} - -static struct platform_driver hal2_driver = { - .probe = hal2_probe, - .remove = __devexit_p(hal2_remove), - .driver = { - .name = "sgihal2", - .owner = THIS_MODULE, - } -}; - -module_platform_driver(hal2_driver); |