--- /dev/null
+/*
+ *
+ * Support for audio capture
+ * PCI function #1 of the cx2388x.
+ *
+ * (c) 2007 Trent Piepho <xyzzy@speakeasy.org>
+ * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
+ * (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
+ * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
+ * Based on dummy.c by Jaroslav Kysela <perex@perex.cz>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/vmalloc.h>
+#include <linux/dma-mapping.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+
+#include <asm/delay.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+#include <media/wm8775.h>
+
+#include "cx88.h"
+#include "cx88-reg.h"
+
+#define dprintk(level, fmt, arg...) do { \
+ if (debug + 1 > level) \
+ printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg);\
+} while(0)
+
+#define dprintk_core(level, fmt, arg...) do { \
+ if (debug + 1 > level) \
+ printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg);\
+} while(0)
+
+/****************************************************************************
+ Data type declarations - Can be moded to a header file later
+ ****************************************************************************/
+
+struct cx88_audio_buffer {
+ unsigned int bpl;
+ struct cx88_riscmem risc;
+ void *vaddr;
+ struct scatterlist *sglist;
+ int sglen;
+ int nr_pages;
+};
+
+struct cx88_audio_dev {
+ struct cx88_core *core;
+ struct cx88_dmaqueue q;
+
+ /* pci i/o */
+ struct pci_dev *pci;
+
+ /* audio controls */
+ int irq;
+
+ struct snd_card *card;
+
+ spinlock_t reg_lock;
+ atomic_t count;
+
+ unsigned int dma_size;
+ unsigned int period_size;
+ unsigned int num_periods;
+
+ struct cx88_audio_buffer *buf;
+
+ struct snd_pcm_substream *substream;
+};
+typedef struct cx88_audio_dev snd_cx88_card_t;
+
+
+
+/****************************************************************************
+ Module global static vars
+ ****************************************************************************/
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
+static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
+static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
+
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
+
+
+/****************************************************************************
+ Module macros
+ ****************************************************************************/
+
+MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
+MODULE_AUTHOR("Ricardo Cerqueira");
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(CX88_VERSION);
+
+MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
+ "{{Conexant,23882},"
+ "{{Conexant,23883}");
+static unsigned int debug;
+module_param(debug,int,0644);
+MODULE_PARM_DESC(debug,"enable debug messages");
+
+/****************************************************************************
+ Module specific funtions
+ ****************************************************************************/
+
+/*
+ * BOARD Specific: Sets audio DMA
+ */
+
+static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
+{
+ struct cx88_audio_buffer *buf = chip->buf;
+ struct cx88_core *core=chip->core;
+ const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
+
+ /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
+ cx_clear(MO_AUD_DMACNTRL, 0x11);
+
+ /* setup fifo + format - out channel */
+ cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
+
+ /* sets bpl size */
+ cx_write(MO_AUDD_LNGTH, buf->bpl);
+
+ /* reset counter */
+ cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
+ atomic_set(&chip->count, 0);
+
+ dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
+ "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
+ chip->num_periods, buf->bpl * chip->num_periods);
+
+ /* Enables corresponding bits at AUD_INT_STAT */
+ cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
+ AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
+
+ /* Clean any pending interrupt bits already set */
+ cx_write(MO_AUD_INTSTAT, ~0);
+
+ /* enable audio irqs */
+ cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
+
+ /* start dma */
+ cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
+ cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
+
+ if (debug)
+ cx88_sram_channel_dump(chip->core, audio_ch);
+
+ return 0;
+}
+
+/*
+ * BOARD Specific: Resets audio DMA
+ */
+static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
+{
+ struct cx88_core *core=chip->core;
+ dprintk(1, "Stopping audio DMA\n");
+
+ /* stop dma */
+ cx_clear(MO_AUD_DMACNTRL, 0x11);
+
+ /* disable irqs */
+ cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
+ cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
+ AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
+
+ if (debug)
+ cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
+
+ return 0;
+}
+
+#define MAX_IRQ_LOOP 50
+
+/*
+ * BOARD Specific: IRQ dma bits
+ */
+static const char *cx88_aud_irqs[32] = {
+ "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
+ NULL, /* reserved */
+ "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
+ NULL, /* reserved */
+ "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
+ NULL, /* reserved */
+ "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
+ NULL, /* reserved */
+ "opc_err", "par_err", "rip_err", /* 16-18 */
+ "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
+};
+
+/*
+ * BOARD Specific: Threats IRQ audio specific calls
+ */
+static void cx8801_aud_irq(snd_cx88_card_t *chip)
+{
+ struct cx88_core *core = chip->core;
+ u32 status, mask;
+
+ status = cx_read(MO_AUD_INTSTAT);
+ mask = cx_read(MO_AUD_INTMSK);
+ if (0 == (status & mask))
+ return;
+ cx_write(MO_AUD_INTSTAT, status);
+ if (debug > 1 || (status & mask & ~0xff))
+ cx88_print_irqbits(core->name, "irq aud",
+ cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
+ status, mask);
+ /* risc op code error */
+ if (status & AUD_INT_OPC_ERR) {
+ printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
+ cx_clear(MO_AUD_DMACNTRL, 0x11);
+ cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
+ }
+ if (status & AUD_INT_DN_SYNC) {
+ dprintk(1, "Downstream sync error\n");
+ cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
+ return;
+ }
+ /* risc1 downstream */
+ if (status & AUD_INT_DN_RISCI1) {
+ atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
+ snd_pcm_period_elapsed(chip->substream);
+ }
+ /* FIXME: Any other status should deserve a special handling? */
+}
+
+/*
+ * BOARD Specific: Handles IRQ calls
+ */
+static irqreturn_t cx8801_irq(int irq, void *dev_id)
+{
+ snd_cx88_card_t *chip = dev_id;
+ struct cx88_core *core = chip->core;
+ u32 status;
+ int loop, handled = 0;
+
+ for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
+ status = cx_read(MO_PCI_INTSTAT) &
+ (core->pci_irqmask | PCI_INT_AUDINT);
+ if (0 == status)
+ goto out;
+ dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
+ loop, MAX_IRQ_LOOP, status);
+ handled = 1;
+ cx_write(MO_PCI_INTSTAT, status);
+
+ if (status & core->pci_irqmask)
+ cx88_core_irq(core, status);
+ if (status & PCI_INT_AUDINT)
+ cx8801_aud_irq(chip);
+ }
+
+ if (MAX_IRQ_LOOP == loop) {
+ printk(KERN_ERR
+ "%s/1: IRQ loop detected, disabling interrupts\n",
+ core->name);
+ cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
+ }
+
+ out:
+ return IRQ_RETVAL(handled);
+}
+
+static int cx88_alsa_dma_init(struct cx88_audio_dev *chip, int nr_pages)
+{
+ struct cx88_audio_buffer *buf = chip->buf;
+ struct page *pg;
+ int i;
+
+ buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT);
+ if (NULL == buf->vaddr) {
+ dprintk(1, "vmalloc_32(%d pages) failed\n", nr_pages);
+ return -ENOMEM;
+ }
+
+ dprintk(1, "vmalloc is at addr 0x%08lx, size=%d\n",
+ (unsigned long)buf->vaddr,
+ nr_pages << PAGE_SHIFT);
+
+ memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);
+ buf->nr_pages = nr_pages;
+
+ buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist));
+ if (NULL == buf->sglist)
+ goto vzalloc_err;
+
+ sg_init_table(buf->sglist, buf->nr_pages);
+ for (i = 0; i < buf->nr_pages; i++) {
+ pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE);
+ if (NULL == pg)
+ goto vmalloc_to_page_err;
+ sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0);
+ }
+ return 0;
+
+vmalloc_to_page_err:
+ vfree(buf->sglist);
+ buf->sglist = NULL;
+vzalloc_err:
+ vfree(buf->vaddr);
+ buf->vaddr = NULL;
+ return -ENOMEM;
+}
+
+static int cx88_alsa_dma_map(struct cx88_audio_dev *dev)
+{
+ struct cx88_audio_buffer *buf = dev->buf;
+
+ buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist,
+ buf->nr_pages, PCI_DMA_FROMDEVICE);
+
+ if (0 == buf->sglen) {
+ pr_warn("%s: cx88_alsa_map_sg failed\n", __func__);
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+static int cx88_alsa_dma_unmap(struct cx88_audio_dev *dev)
+{
+ struct cx88_audio_buffer *buf = dev->buf;
+
+ if (!buf->sglen)
+ return 0;
+
+ dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->sglen, PCI_DMA_FROMDEVICE);
+ buf->sglen = 0;
+ return 0;
+}
+
+static int cx88_alsa_dma_free(struct cx88_audio_buffer *buf)
+{
+ vfree(buf->sglist);
+ buf->sglist = NULL;
+ vfree(buf->vaddr);
+ buf->vaddr = NULL;
+ return 0;
+}
+
+
+static int dsp_buffer_free(snd_cx88_card_t *chip)
+{
+ struct cx88_riscmem *risc = &chip->buf->risc;
+
+ BUG_ON(!chip->dma_size);
+
+ dprintk(2,"Freeing buffer\n");
+ cx88_alsa_dma_unmap(chip);
+ cx88_alsa_dma_free(chip->buf);
+ if (risc->cpu)
+ pci_free_consistent(chip->pci, risc->size, risc->cpu, risc->dma);
+ kfree(chip->buf);
+
+ chip->buf = NULL;
+
+ return 0;
+}
+
+/****************************************************************************
+ ALSA PCM Interface
+ ****************************************************************************/
+
+/*
+ * Digital hardware definition
+ */
+#define DEFAULT_FIFO_SIZE 4096
+static const struct snd_pcm_hardware snd_cx88_digital_hw = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP_VALID,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ /* Analog audio output will be full of clicks and pops if there
+ are not exactly four lines in the SRAM FIFO buffer. */
+ .period_bytes_min = DEFAULT_FIFO_SIZE/4,
+ .period_bytes_max = DEFAULT_FIFO_SIZE/4,
+ .periods_min = 1,
+ .periods_max = 1024,
+ .buffer_bytes_max = (1024*1024),
+};
+
+/*
+ * audio pcm capture open callback
+ */
+static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
+{
+ snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int err;
+
+ if (!chip) {
+ printk(KERN_ERR "BUG: cx88 can't find device struct."
+ " Can't proceed with open\n");
+ return -ENODEV;
+ }
+
+ err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
+ if (err < 0)
+ goto _error;
+
+ chip->substream = substream;
+
+ runtime->hw = snd_cx88_digital_hw;
+
+ if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
+ unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
+ bpl &= ~7; /* must be multiple of 8 */
+ runtime->hw.period_bytes_min = bpl;
+ runtime->hw.period_bytes_max = bpl;
+ }
+
+ return 0;
+_error:
+ dprintk(1,"Error opening PCM!\n");
+ return err;
+}
+
+/*
+ * audio close callback
+ */
+static int snd_cx88_close(struct snd_pcm_substream *substream)
+{
+ return 0;
+}
+
+/*
+ * hw_params callback
+ */
+static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
+ struct snd_pcm_hw_params * hw_params)
+{
+ snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
+
+ struct cx88_audio_buffer *buf;
+ int ret;
+
+ if (substream->runtime->dma_area) {
+ dsp_buffer_free(chip);
+ substream->runtime->dma_area = NULL;
+ }
+
+ chip->period_size = params_period_bytes(hw_params);
+ chip->num_periods = params_periods(hw_params);
+ chip->dma_size = chip->period_size * params_periods(hw_params);
+
+ BUG_ON(!chip->dma_size);
+ BUG_ON(chip->num_periods & (chip->num_periods-1));
+
+ buf = kzalloc(sizeof(*buf), GFP_KERNEL);
+ if (NULL == buf)
+ return -ENOMEM;
+
+ chip->buf = buf;
+ buf->bpl = chip->period_size;
+
+ ret = cx88_alsa_dma_init(chip,
+ (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
+ if (ret < 0)
+ goto error;
+
+ ret = cx88_alsa_dma_map(chip);
+ if (ret < 0)
+ goto error;
+
+ ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->sglist,
+ chip->period_size, chip->num_periods, 1);
+ if (ret < 0)
+ goto error;
+
+ /* Loop back to start of program */
+ buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
+ buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
+
+ substream->runtime->dma_area = chip->buf->vaddr;
+ substream->runtime->dma_bytes = chip->dma_size;
+ substream->runtime->dma_addr = 0;
+ return 0;
+
+error:
+ kfree(buf);
+ return ret;
+}
+
+/*
+ * hw free callback
+ */
+static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
+{
+
+ snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
+
+ if (substream->runtime->dma_area) {
+ dsp_buffer_free(chip);
+ substream->runtime->dma_area = NULL;
+ }
+
+ return 0;
+}
+
+/*
+ * prepare callback
+ */
+static int snd_cx88_prepare(struct snd_pcm_substream *substream)
+{
+ return 0;
+}
+
+/*
+ * trigger callback
+ */
+static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
+ int err;
+
+ /* Local interrupts are already disabled by ALSA */
+ spin_lock(&chip->reg_lock);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ err=_cx88_start_audio_dma(chip);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ err=_cx88_stop_audio_dma(chip);
+ break;
+ default:
+ err=-EINVAL;
+ break;
+ }
+
+ spin_unlock(&chip->reg_lock);
+
+ return err;
+}
+
+/*
+ * pointer callback
+ */
+static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
+{
+ snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ u16 count;
+
+ count = atomic_read(&chip->count);
+
+// dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
+// count, new, count & (runtime->periods-1),
+// runtime->period_size * (count & (runtime->periods-1)));
+ return runtime->period_size * (count & (runtime->periods-1));
+}
+
+/*
+ * page callback (needed for mmap)
+ */
+static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
+ unsigned long offset)
+{
+ void *pageptr = substream->runtime->dma_area + offset;
+ return vmalloc_to_page(pageptr);
+}
+
+/*
+ * operators
+ */
+static struct snd_pcm_ops snd_cx88_pcm_ops = {
+ .open = snd_cx88_pcm_open,
+ .close = snd_cx88_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_cx88_hw_params,
+ .hw_free = snd_cx88_hw_free,
+ .prepare = snd_cx88_prepare,
+ .trigger = snd_cx88_card_trigger,
+ .pointer = snd_cx88_pointer,
+ .page = snd_cx88_page,
+};
+
+/*
+ * create a PCM device
+ */
+static int snd_cx88_pcm(snd_cx88_card_t *chip, int device, const char *name)
+{
+ int err;
+ struct snd_pcm *pcm;
+
+ err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
+ if (err < 0)
+ return err;
+ pcm->private_data = chip;
+ strcpy(pcm->name, name);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
+
+ return 0;
+}
+
+/****************************************************************************
+ CONTROL INTERFACE
+ ****************************************************************************/
+static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *info)
+{
+ info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ info->count = 2;
+ info->value.integer.min = 0;
+ info->value.integer.max = 0x3f;
+
+ return 0;
+}
+
+static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *value)
+{
+ snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
+ struct cx88_core *core=chip->core;
+ int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
+ bal = cx_read(AUD_BAL_CTL);
+
+ value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
+ vol -= (bal & 0x3f);
+ value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
+
+ return 0;
+}
+
+static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *value)
+{
+ snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
+ struct cx88_core *core = chip->core;
+ int left = value->value.integer.value[0];
+ int right = value->value.integer.value[1];
+ int v, b;
+
+ /* Pass volume & balance onto any WM8775 */
+ if (left >= right) {
+ v = left << 10;
+ b = left ? (0x8000 * right) / left : 0x8000;
+ } else {
+ v = right << 10;
+ b = right ? 0xffff - (0x8000 * left) / right : 0x8000;
+ }
+ wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v);
+ wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b);
+}
+
+/* OK - TODO: test it */
+static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *value)
+{
+ snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
+ struct cx88_core *core=chip->core;
+ int left, right, v, b;
+ int changed = 0;
+ u32 old;
+
+ if (core->sd_wm8775)
+ snd_cx88_wm8775_volume_put(kcontrol, value);
+
+ left = value->value.integer.value[0] & 0x3f;
+ right = value->value.integer.value[1] & 0x3f;
+ b = right - left;
+ if (b < 0) {
+ v = 0x3f - left;
+ b = (-b) | 0x40;
+ } else {
+ v = 0x3f - right;
+ }
+ /* Do we really know this will always be called with IRQs on? */
+ spin_lock_irq(&chip->reg_lock);
+ old = cx_read(AUD_VOL_CTL);
+ if (v != (old & 0x3f)) {
+ cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
+ changed = 1;
+ }
+ if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
+ cx_write(AUD_BAL_CTL, b);
+ changed = 1;
+ }
+ spin_unlock_irq(&chip->reg_lock);
+
+ return changed;
+}
+
+static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
+
+static const struct snd_kcontrol_new snd_cx88_volume = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
+ SNDRV_CTL_ELEM_ACCESS_TLV_READ,
+ .name = "Analog-TV Volume",
+ .info = snd_cx88_volume_info,
+ .get = snd_cx88_volume_get,
+ .put = snd_cx88_volume_put,
+ .tlv.p = snd_cx88_db_scale,
+};
+
+static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *value)
+{
+ snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
+ struct cx88_core *core = chip->core;
+ u32 bit = kcontrol->private_value;
+
+ value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
+ return 0;
+}
+
+static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *value)
+{
+ snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
+ struct cx88_core *core = chip->core;
+ u32 bit = kcontrol->private_value;
+ int ret = 0;
+ u32 vol;
+
+ spin_lock_irq(&chip->reg_lock);
+ vol = cx_read(AUD_VOL_CTL);
+ if (value->value.integer.value[0] != !(vol & bit)) {
+ vol ^= bit;
+ cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
+ /* Pass mute onto any WM8775 */
+ if (core->sd_wm8775 && ((1<<6) == bit))
+ wm8775_s_ctrl(core, V4L2_CID_AUDIO_MUTE, 0 != (vol & bit));
+ ret = 1;
+ }
+ spin_unlock_irq(&chip->reg_lock);
+ return ret;
+}
+
+static const struct snd_kcontrol_new snd_cx88_dac_switch = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Audio-Out Switch",
+ .info = snd_ctl_boolean_mono_info,
+ .get = snd_cx88_switch_get,
+ .put = snd_cx88_switch_put,
+ .private_value = (1<<8),
+};
+
+static const struct snd_kcontrol_new snd_cx88_source_switch = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Analog-TV Switch",
+ .info = snd_ctl_boolean_mono_info,
+ .get = snd_cx88_switch_get,
+ .put = snd_cx88_switch_put,
+ .private_value = (1<<6),
+};
+
+static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *value)
+{
+ snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
+ struct cx88_core *core = chip->core;
+ s32 val;
+
+ val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS);
+ value->value.integer.value[0] = val ? 1 : 0;
+ return 0;
+}
+
+static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *value)
+{
+ snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
+ struct cx88_core *core = chip->core;
+ struct v4l2_control client_ctl;
+
+ memset(&client_ctl, 0, sizeof(client_ctl));
+ client_ctl.value = 0 != value->value.integer.value[0];
+ client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
+ call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
+
+ return 0;
+}
+
+static struct snd_kcontrol_new snd_cx88_alc_switch = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Line-In ALC Switch",
+ .info = snd_ctl_boolean_mono_info,
+ .get = snd_cx88_alc_get,
+ .put = snd_cx88_alc_put,
+};
+
+/****************************************************************************
+ Basic Flow for Sound Devices
+ ****************************************************************************/
+
+/*
+ * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
+ * Only boards with eeprom and byte 1 at eeprom=1 have it
+ */
+
+static const struct pci_device_id cx88_audio_pci_tbl[] = {
+ {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
+ {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
+ {0, }
+};
+MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
+
+/*
+ * Chip-specific destructor
+ */
+
+static int snd_cx88_free(snd_cx88_card_t *chip)
+{
+
+ if (chip->irq >= 0)
+ free_irq(chip->irq, chip);
+
+ cx88_core_put(chip->core,chip->pci);
+
+ pci_disable_device(chip->pci);
+ return 0;
+}
+
+/*
+ * Component Destructor
+ */
+static void snd_cx88_dev_free(struct snd_card * card)
+{
+ snd_cx88_card_t *chip = card->private_data;
+
+ snd_cx88_free(chip);
+}
+
+
+/*
+ * Alsa Constructor - Component probe
+ */
+
+static int devno;
+static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci,
+ snd_cx88_card_t **rchip,
+ struct cx88_core **core_ptr)
+{
+ snd_cx88_card_t *chip;
+ struct cx88_core *core;
+ int err;
+ unsigned char pci_lat;
+
+ *rchip = NULL;
+
+ err = pci_enable_device(pci);
+ if (err < 0)
+ return err;
+
+ pci_set_master(pci);
+
+ chip = card->private_data;
+
+ core = cx88_core_get(pci);
+ if (NULL == core) {
+ err = -EINVAL;
+ return err;
+ }
+
+ if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
+ dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
+ err = -EIO;
+ cx88_core_put(core, pci);
+ return err;
+ }
+
+
+ /* pci init */
+ chip->card = card;
+ chip->pci = pci;
+ chip->irq = -1;
+ spin_lock_init(&chip->reg_lock);
+
+ chip->core = core;
+
+ /* get irq */
+ err = request_irq(chip->pci->irq, cx8801_irq,
+ IRQF_SHARED, chip->core->name, chip);
+ if (err < 0) {
+ dprintk(0, "%s: can't get IRQ %d\n",
+ chip->core->name, chip->pci->irq);
+ return err;
+ }
+
+ /* print pci info */
+ pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
+
+ dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
+ "latency: %d, mmio: 0x%llx\n", core->name, devno,
+ pci_name(pci), pci->revision, pci->irq,
+ pci_lat, (unsigned long long)pci_resource_start(pci,0));
+
+ chip->irq = pci->irq;
+ synchronize_irq(chip->irq);
+
+ *rchip = chip;
+ *core_ptr = core;
+
+ return 0;
+}
+
+static int cx88_audio_initdev(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
+{
+ struct snd_card *card;
+ snd_cx88_card_t *chip;
+ struct cx88_core *core = NULL;
+ int err;
+
+ if (devno >= SNDRV_CARDS)
+ return (-ENODEV);
+
+ if (!enable[devno]) {
+ ++devno;
+ return (-ENOENT);
+ }
+
+ err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
+ sizeof(snd_cx88_card_t), &card);
+ if (err < 0)
+ return err;
+
+ card->private_free = snd_cx88_dev_free;
+
+ err = snd_cx88_create(card, pci, &chip, &core);
+ if (err < 0)
+ goto error;
+
+ err = snd_cx88_pcm(chip, 0, "CX88 Digital");
+ if (err < 0)
+ goto error;
+
+ err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
+ if (err < 0)
+ goto error;
+ err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
+ if (err < 0)
+ goto error;
+ err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
+ if (err < 0)
+ goto error;
+
+ /* If there's a wm8775 then add a Line-In ALC switch */
+ if (core->sd_wm8775)
+ snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
+
+ strcpy (card->driver, "CX88x");
+ sprintf(card->shortname, "Conexant CX%x", pci->device);
+ sprintf(card->longname, "%s at %#llx",
+ card->shortname,(unsigned long long)pci_resource_start(pci, 0));
+ strcpy (card->mixername, "CX88");
+
+ dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
+ card->driver,devno);
+
+ err = snd_card_register(card);
+ if (err < 0)
+ goto error;
+ pci_set_drvdata(pci,card);
+
+ devno++;
+ return 0;
+
+error:
+ snd_card_free(card);
+ return err;
+}
+/*
+ * ALSA destructor
+ */
+static void cx88_audio_finidev(struct pci_dev *pci)
+{
+ struct snd_card *card = pci_get_drvdata(pci);
+
+ snd_card_free(card);
+
+ devno--;
+}
+
+/*
+ * PCI driver definition
+ */
+
+static struct pci_driver cx88_audio_pci_driver = {
+ .name = "cx88_audio",
+ .id_table = cx88_audio_pci_tbl,
+ .probe = cx88_audio_initdev,
+ .remove = cx88_audio_finidev,
+};
+
+module_pci_driver(cx88_audio_pci_driver);
Code Review / kvmfornfv.git / blobdiff