--- /dev/null
+/*
+ * bt87x.c - Brooktree Bt878/Bt879 driver for ALSA
+ *
+ * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
+ *
+ * based on btaudio.c by Gerd Knorr <kraxel@bytesex.org>
+ *
+ *
+ * This driver 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 driver 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 <sound/driver.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <asm/io.h>
+#include <asm/bitops.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/control.h>
+#define SNDRV_GET_ID
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
+MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
+MODULE_LICENSE("GPL");
+MODULE_CLASSES("{sound}");
+MODULE_DEVICES("{{Brooktree,Bt878},"
+ "{Brooktree,Bt879}}");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
+static int digital_rate[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = 0 }; /* digital input rate */
+
+MODULE_PARM(index, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
+MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
+MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC);
+MODULE_PARM(id, "1-" __MODULE_STRING(SNDRV_CARDS) "s");
+MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
+MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC);
+MODULE_PARM(enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
+MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
+MODULE_PARM_SYNTAX(enable, SNDRV_ENABLE_DESC);
+MODULE_PARM(digital_rate, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
+MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
+MODULE_PARM_SYNTAX(digital_rate, SNDRV_ENABLED);
+
+
+#ifndef PCI_VENDOR_ID_BROOKTREE
+#define PCI_VENDOR_ID_BROOKTREE 0x109e
+#endif
+#ifndef PCI_DEVICE_ID_BROOKTREE_878
+#define PCI_DEVICE_ID_BROOKTREE_878 0x0878
+#endif
+#ifndef PCI_DEVICE_ID_BROOKTREE_879
+#define PCI_DEVICE_ID_BROOKTREE_879 0x0879
+#endif
+
+/* register offsets */
+#define REG_INT_STAT 0x100 /* interrupt status */
+#define REG_INT_MASK 0x104 /* interrupt mask */
+#define REG_GPIO_DMA_CTL 0x10c /* audio control */
+#define REG_PACKET_LEN 0x110 /* audio packet lengths */
+#define REG_RISC_STRT_ADD 0x114 /* RISC program start address */
+#define REG_RISC_COUNT 0x120 /* RISC program counter */
+
+/* interrupt bits */
+#define INT_OFLOW (1 << 3) /* audio A/D overflow */
+#define INT_RISCI (1 << 11) /* RISC instruction IRQ bit set */
+#define INT_FBUS (1 << 12) /* FIFO overrun due to bus access latency */
+#define INT_FTRGT (1 << 13) /* FIFO overrun due to target latency */
+#define INT_FDSR (1 << 14) /* FIFO data stream resynchronization */
+#define INT_PPERR (1 << 15) /* PCI parity error */
+#define INT_RIPERR (1 << 16) /* RISC instruction parity error */
+#define INT_PABORT (1 << 17) /* PCI master or target abort */
+#define INT_OCERR (1 << 18) /* invalid opcode */
+#define INT_SCERR (1 << 19) /* sync counter overflow */
+#define INT_RISC_EN (1 << 27) /* DMA controller running */
+#define INT_RISCS_SHIFT 28 /* RISC status bits */
+
+/* audio control bits */
+#define CTL_FIFO_ENABLE (1 << 0) /* enable audio data FIFO */
+#define CTL_RISC_ENABLE (1 << 1) /* enable audio DMA controller */
+#define CTL_PKTP_4 (0 << 2) /* packet mode FIFO trigger point - 4 DWORDs */
+#define CTL_PKTP_8 (1 << 2) /* 8 DWORDs */
+#define CTL_PKTP_16 (2 << 2) /* 16 DWORDs */
+#define CTL_ACAP_EN (1 << 4) /* enable audio capture */
+#define CTL_DA_APP (1 << 5) /* GPIO input */
+#define CTL_DA_IOM_AFE (0 << 6) /* audio A/D input */
+#define CTL_DA_IOM_DA (1 << 6) /* digital audio input */
+#define CTL_DA_SDR_SHIFT 8 /* DDF first stage decimation rate */
+#define CTL_DA_SDR_MASK (0xf<< 8)
+#define CTL_DA_LMT (1 << 12) /* limit audio data values */
+#define CTL_DA_ES2 (1 << 13) /* enable DDF stage 2 */
+#define CTL_DA_SBR (1 << 14) /* samples rounded to 8 bits */
+#define CTL_DA_DPM (1 << 15) /* data packet mode */
+#define CTL_DA_LRD_SHIFT 16 /* ALRCK delay */
+#define CTL_DA_MLB (1 << 21) /* MSB/LSB format */
+#define CTL_DA_LRI (1 << 22) /* left/right indication */
+#define CTL_DA_SCE (1 << 23) /* sample clock edge */
+#define CTL_A_SEL_STV (0 << 24) /* TV tuner audio input */
+#define CTL_A_SEL_SFM (1 << 24) /* FM audio input */
+#define CTL_A_SEL_SML (2 << 24) /* mic/line audio input */
+#define CTL_A_SEL_SMXC (3 << 24) /* MUX bypass */
+#define CTL_A_SEL_SHIFT 24
+#define CTL_A_SEL_MASK (3 << 24)
+#define CTL_A_PWRDN (1 << 26) /* analog audio power-down */
+#define CTL_A_G2X (1 << 27) /* audio gain boost */
+#define CTL_A_GAIN_SHIFT 28 /* audio input gain */
+#define CTL_A_GAIN_MASK (0xf<<28)
+
+/* RISC instruction opcodes */
+#define RISC_WRITE (0x1 << 28) /* write FIFO data to memory at address */
+#define RISC_WRITEC (0x5 << 28) /* write FIFO data to memory at current address */
+#define RISC_SKIP (0x2 << 28) /* skip FIFO data */
+#define RISC_JUMP (0x7 << 28) /* jump to address */
+#define RISC_SYNC (0x8 << 28) /* synchronize with FIFO */
+
+/* RISC instruction bits */
+#define RISC_BYTES_ENABLE (0xf << 12) /* byte enable bits */
+#define RISC_RESYNC ( 1 << 15) /* disable FDSR errors */
+#define RISC_SET_STATUS_SHIFT 16 /* set status bits */
+#define RISC_RESET_STATUS_SHIFT 20 /* clear status bits */
+#define RISC_IRQ ( 1 << 24) /* interrupt */
+#define RISC_EOL ( 1 << 26) /* end of line */
+#define RISC_SOL ( 1 << 27) /* start of line */
+
+/* SYNC status bits values */
+#define RISC_SYNC_FM1 0x6
+#define RISC_SYNC_VRO 0xc
+
+#define ERROR_INTERRUPTS (INT_FBUS | INT_FTRGT | INT_PPERR | \
+ INT_RIPERR | INT_PABORT | INT_OCERR)
+#define MY_INTERRUPTS (INT_RISCI | ERROR_INTERRUPTS)
+
+/* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
+#define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
+
+#define chip_t bt87x_t
+typedef struct snd_bt87x bt87x_t;
+struct snd_bt87x {
+ snd_card_t *card;
+ struct pci_dev *pci;
+
+ void *mmio;
+ struct resource *res_mmio;
+ int irq;
+
+ int dig_rate;
+
+ spinlock_t reg_lock;
+ long opened;
+ snd_pcm_substream_t *substream;
+
+ u32 *risc;
+ dma_addr_t risc_dma;
+ unsigned int line_bytes;
+ unsigned int lines;
+
+ u32 reg_control;
+ int current_line;
+};
+
+enum { DEVICE_DIGITAL, DEVICE_ANALOG };
+
+static inline u32 snd_bt87x_readl(bt87x_t *chip, u32 reg)
+{
+ return readl(chip->mmio + reg);
+}
+
+static inline void snd_bt87x_writel(bt87x_t *chip, u32 reg, u32 value)
+{
+ writel(value, chip->mmio + reg);
+}
+
+static int snd_bt87x_create_risc(bt87x_t *chip, snd_pcm_substream_t *substream,
+ unsigned int periods, unsigned int period_bytes)
+{
+ struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
+ unsigned int i, offset;
+ u32 *risc;
+
+ if (!chip->risc) {
+ chip->risc = (u32*)snd_malloc_pci_pages
+ (chip->pci, PAGE_ALIGN(MAX_RISC_SIZE), &chip->risc_dma);
+ if (!chip->risc)
+ return -ENOMEM;
+ }
+ risc = chip->risc;
+ offset = 0;
+ *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_FM1);
+ *risc++ = cpu_to_le32(0);
+ for (i = 0; i < periods; ++i) {
+ u32 rest;
+
+ rest = period_bytes;
+ do {
+ u32 cmd, len;
+
+ len = PAGE_SIZE - (offset % PAGE_SIZE);
+ if (len > rest)
+ len = rest;
+ cmd = RISC_WRITE | len;
+ if (rest == period_bytes) {
+ u32 block = i * 16 / periods;
+ cmd |= RISC_SOL;
+ cmd |= block << RISC_SET_STATUS_SHIFT;
+ cmd |= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
+ }
+ if (len == rest)
+ cmd |= RISC_EOL | RISC_IRQ;
+ *risc++ = cpu_to_le32(cmd);
+ *risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
+ offset += len;
+ rest -= len;
+ } while (rest > 0);
+ }
+ *risc++ = cpu_to_le32(RISC_SYNC | RISC_SYNC_VRO);
+ *risc++ = cpu_to_le32(0);
+ *risc++ = cpu_to_le32(RISC_JUMP);
+ *risc++ = cpu_to_le32(chip->risc_dma);
+ chip->line_bytes = period_bytes;
+ chip->lines = periods;
+ return 0;
+}
+
+static void snd_bt87x_free_risc(bt87x_t *chip)
+{
+ if (chip->risc) {
+ snd_free_pci_pages(chip->pci, PAGE_ALIGN(MAX_RISC_SIZE),
+ chip->risc, chip->risc_dma);
+ chip->risc = NULL;
+ }
+}
+
+static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ bt87x_t *chip = snd_magic_cast(bt87x_t, dev_id, return IRQ_NONE);
+ unsigned int status;
+
+ status = snd_bt87x_readl(chip, REG_INT_STAT);
+ if (!(status & MY_INTERRUPTS))
+ return IRQ_NONE;
+ snd_bt87x_writel(chip, REG_INT_STAT, status & MY_INTERRUPTS);
+
+ if (status & ERROR_INTERRUPTS) {
+ if (status & (INT_FBUS | INT_FTRGT))
+ snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
+ if (status & INT_OCERR)
+ snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
+ if (status & (INT_PPERR | INT_RIPERR | INT_PABORT)) {
+ u16 pci_status;
+ pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
+ pci_write_config_word(chip->pci, PCI_STATUS, pci_status &
+ (PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
+ PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
+ PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
+ snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
+ status, pci_status);
+ }
+ }
+ if (status & INT_RISCI) {
+ int current_block, irq_block;
+
+ /* assume that exactly one line has been recorded */
+ chip->current_line = (chip->current_line + 1) % chip->lines;
+ /* but check if some interrupts have been skipped */
+ current_block = chip->current_line * 16 / chip->lines;
+ irq_block = status >> INT_RISCS_SHIFT;
+ if (current_block != irq_block)
+ chip->current_line = (irq_block * chip->lines + 15) / 16;
+
+ snd_pcm_period_elapsed(chip->substream);
+ }
+ return IRQ_HANDLED;
+}
+
+static snd_pcm_hardware_t snd_bt87x_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 = 0, /* set at runtime */
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = 255 * 4092,
+ .period_bytes_min = 32,
+ .period_bytes_max = 4092,
+ .periods_min = 2,
+ .periods_max = 255,
+};
+
+static snd_pcm_hardware_t snd_bt87x_analog_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 | SNDRV_PCM_FMTBIT_S8,
+ .rates = SNDRV_PCM_RATE_KNOT,
+ .rate_min = 119467,
+ .rate_max = 448000,
+ .channels_min = 1,
+ .channels_max = 1,
+ .buffer_bytes_max = 255 * 4092,
+ .period_bytes_min = 32,
+ .period_bytes_max = 4092,
+ .periods_min = 2,
+ .periods_max = 255,
+};
+
+static int snd_bt87x_set_digital_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
+{
+ static struct {
+ int rate;
+ unsigned int bit;
+ } ratebits[] = {
+ {8000, SNDRV_PCM_RATE_8000},
+ {11025, SNDRV_PCM_RATE_11025},
+ {16000, SNDRV_PCM_RATE_16000},
+ {22050, SNDRV_PCM_RATE_22050},
+ {32000, SNDRV_PCM_RATE_32000},
+ {44100, SNDRV_PCM_RATE_44100},
+ {48000, SNDRV_PCM_RATE_48000}
+ };
+ int i;
+
+ chip->reg_control |= CTL_DA_IOM_DA;
+ runtime->hw = snd_bt87x_digital_hw;
+ runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
+ for (i = 0; i < ARRAY_SIZE(ratebits); ++i)
+ if (chip->dig_rate == ratebits[i].rate) {
+ runtime->hw.rates = ratebits[i].bit;
+ break;
+ }
+ runtime->hw.rate_min = chip->dig_rate;
+ runtime->hw.rate_max = chip->dig_rate;
+ return 0;
+}
+
+static int snd_bt87x_set_analog_hw(bt87x_t *chip, snd_pcm_runtime_t *runtime)
+{
+ static unsigned int rates[] = {
+ 119467, 128000, 137846, 149333, 162909, 179200,
+ 199111, 224000, 256000, 298667, 358400, 448000
+ };
+ static snd_pcm_hw_constraint_list_t constraint_rates = {
+ .count = ARRAY_SIZE(rates),
+ .list = rates,
+ .mask = 0,
+ };
+
+ chip->reg_control &= ~CTL_DA_IOM_DA;
+ runtime->hw = snd_bt87x_analog_hw;
+ return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &constraint_rates);
+}
+
+static int snd_bt87x_pcm_open(snd_pcm_substream_t *substream)
+{
+ bt87x_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ int err;
+
+ if (test_and_set_bit(0, &chip->opened))
+ return -EBUSY;
+
+ if (substream->pcm->device == DEVICE_DIGITAL)
+ err = snd_bt87x_set_digital_hw(chip, runtime);
+ else
+ err = snd_bt87x_set_analog_hw(chip, runtime);
+ if (err < 0)
+ goto _error;
+
+ err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+ if (err < 0)
+ goto _error;
+
+ chip->substream = substream;
+ return 0;
+
+_error:
+ clear_bit(0, &chip->opened);
+ smp_mb__after_clear_bit();
+ return err;
+}
+
+static int snd_bt87x_close(snd_pcm_substream_t *substream)
+{
+ bt87x_t *chip = snd_pcm_substream_chip(substream);
+
+ chip->substream = NULL;
+ clear_bit(0, &chip->opened);
+ smp_mb__after_clear_bit();
+ return 0;
+}
+
+static int snd_bt87x_hw_params(snd_pcm_substream_t *substream,
+ snd_pcm_hw_params_t *hw_params)
+{
+ bt87x_t *chip = snd_pcm_substream_chip(substream);
+ int err;
+
+ err = snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+ if (err < 0)
+ return err;
+ return snd_bt87x_create_risc(chip, substream,
+ params_periods(hw_params),
+ params_period_bytes(hw_params));
+}
+
+static int snd_bt87x_hw_free(snd_pcm_substream_t *substream)
+{
+ bt87x_t *chip = snd_pcm_substream_chip(substream);
+
+ snd_bt87x_free_risc(chip);
+ snd_pcm_lib_free_pages(substream);
+ return 0;
+}
+
+static int snd_bt87x_prepare(snd_pcm_substream_t *substream)
+{
+ bt87x_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ unsigned long flags;
+ int decimation;
+
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
+ decimation = (1792000 + 5) / runtime->rate;
+ chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
+ if (runtime->format == SNDRV_PCM_FORMAT_S8)
+ chip->reg_control |= CTL_DA_SBR;
+ snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+ return 0;
+}
+
+static int snd_bt87x_start(bt87x_t *chip)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ chip->current_line = 0;
+ chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
+ snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->risc_dma);
+ snd_bt87x_writel(chip, REG_PACKET_LEN,
+ chip->line_bytes | (chip->lines << 16));
+ snd_bt87x_writel(chip, REG_INT_MASK, MY_INTERRUPTS);
+ snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+ return 0;
+}
+
+static int snd_bt87x_stop(bt87x_t *chip)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
+ snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
+ snd_bt87x_writel(chip, REG_INT_MASK, 0);
+ snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+ return 0;
+}
+
+static int snd_bt87x_trigger(snd_pcm_substream_t *substream, int cmd)
+{
+ bt87x_t *chip = snd_pcm_substream_chip(substream);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ return snd_bt87x_start(chip);
+ case SNDRV_PCM_TRIGGER_STOP:
+ return snd_bt87x_stop(chip);
+ default:
+ return -EINVAL;
+ }
+}
+
+static snd_pcm_uframes_t snd_bt87x_pointer(snd_pcm_substream_t *substream)
+{
+ bt87x_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+
+ return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
+}
+
+static snd_pcm_ops_t snd_bt87x_pcm_ops = {
+ .open = snd_bt87x_pcm_open,
+ .close = snd_bt87x_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_bt87x_hw_params,
+ .hw_free = snd_bt87x_hw_free,
+ .prepare = snd_bt87x_prepare,
+ .trigger = snd_bt87x_trigger,
+ .pointer = snd_bt87x_pointer,
+ .page = snd_pcm_sgbuf_ops_page,
+};
+
+static int snd_bt87x_capture_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
+{
+ info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ info->count = 1;
+ info->value.integer.min = 0;
+ info->value.integer.max = 15;
+ return 0;
+}
+
+static int snd_bt87x_capture_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
+{
+ bt87x_t *chip = snd_kcontrol_chip(kcontrol);
+
+ value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
+ return 0;
+}
+
+static int snd_bt87x_capture_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
+{
+ bt87x_t *chip = snd_kcontrol_chip(kcontrol);
+ unsigned long flags;
+ u32 old_control;
+ int changed;
+
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ old_control = chip->reg_control;
+ chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
+ | (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
+ snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
+ changed = old_control != chip->reg_control;
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+ return changed;
+}
+
+static snd_kcontrol_new_t snd_bt87x_capture_volume = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Capture Volume",
+ .info = snd_bt87x_capture_volume_info,
+ .get = snd_bt87x_capture_volume_get,
+ .put = snd_bt87x_capture_volume_put,
+};
+
+static int snd_bt87x_capture_boost_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
+{
+ info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ info->count = 1;
+ info->value.integer.min = 0;
+ info->value.integer.max = 1;
+ return 0;
+}
+
+static int snd_bt87x_capture_boost_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
+{
+ bt87x_t *chip = snd_kcontrol_chip(kcontrol);
+
+ value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
+ return 0;
+}
+
+static int snd_bt87x_capture_boost_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
+{
+ bt87x_t *chip = snd_kcontrol_chip(kcontrol);
+ unsigned long flags;
+ u32 old_control;
+ int changed;
+
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ old_control = chip->reg_control;
+ chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
+ | (value->value.integer.value[0] ? CTL_A_G2X : 0);
+ snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
+ changed = chip->reg_control != old_control;
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+ return changed;
+}
+
+static snd_kcontrol_new_t snd_bt87x_capture_boost = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Capture Boost",
+ .info = snd_bt87x_capture_boost_info,
+ .get = snd_bt87x_capture_boost_get,
+ .put = snd_bt87x_capture_boost_put,
+};
+
+static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *info)
+{
+ static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
+
+ info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ info->count = 1;
+ info->value.enumerated.items = 3;
+ if (info->value.enumerated.item > 2)
+ info->value.enumerated.item = 2;
+ strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
+ return 0;
+}
+
+static int snd_bt87x_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
+{
+ bt87x_t *chip = snd_kcontrol_chip(kcontrol);
+
+ value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
+ return 0;
+}
+
+static int snd_bt87x_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *value)
+{
+ bt87x_t *chip = snd_kcontrol_chip(kcontrol);
+ unsigned long flags;
+ u32 old_control;
+ int changed;
+
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ old_control = chip->reg_control;
+ chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
+ | (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
+ snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
+ changed = chip->reg_control != old_control;
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+ return changed;
+}
+
+static snd_kcontrol_new_t snd_bt87x_capture_source = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Capture Source",
+ .info = snd_bt87x_capture_source_info,
+ .get = snd_bt87x_capture_source_get,
+ .put = snd_bt87x_capture_source_put,
+};
+
+static int snd_bt87x_free(bt87x_t *chip)
+{
+ if (chip->mmio) {
+ snd_bt87x_stop(chip);
+ if (chip->irq >= 0)
+ synchronize_irq(chip->irq);
+
+ iounmap(chip->mmio);
+ }
+ if (chip->res_mmio) {
+ release_resource(chip->res_mmio);
+ kfree_nocheck(chip->res_mmio);
+ }
+ if (chip->irq >= 0)
+ free_irq(chip->irq, chip);
+ snd_magic_kfree(chip);
+ return 0;
+}
+
+static int snd_bt87x_dev_free(snd_device_t *device)
+{
+ bt87x_t *chip = snd_magic_cast(bt87x_t, device->device_data, return -ENXIO);
+ return snd_bt87x_free(chip);
+}
+
+static int __devinit snd_bt87x_pcm(bt87x_t *chip, int device, char *name)
+{
+ int err;
+ snd_pcm_t *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_bt87x_pcm_ops);
+ return snd_pcm_lib_preallocate_sg_pages_for_all(chip->pci, pcm,
+ 128 * 1024,
+ (255 * 4092 + 1023) & ~1023);
+}
+
+static int __devinit snd_bt87x_create(snd_card_t *card,
+ struct pci_dev *pci,
+ bt87x_t **rchip)
+{
+ bt87x_t *chip;
+ int err;
+ static snd_device_ops_t ops = {
+ .dev_free = snd_bt87x_dev_free
+ };
+
+ *rchip = NULL;
+
+ err = pci_enable_device(pci);
+ if (err < 0)
+ return err;
+
+ chip = snd_magic_kcalloc(bt87x_t, 0, GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+ chip->card = card;
+ chip->pci = pci;
+ chip->irq = -1;
+ spin_lock_init(&chip->reg_lock);
+
+ chip->res_mmio = request_mem_region(pci_resource_start(pci, 0),
+ pci_resource_len(pci, 0),
+ "Bt87x audio");
+ if (!chip->res_mmio) {
+ snd_bt87x_free(chip);
+ snd_printk(KERN_ERR "cannot allocate io memory\n");
+ return -EBUSY;
+ }
+ chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
+ pci_resource_len(pci, 0));
+ if (!chip->mmio) {
+ snd_bt87x_free(chip);
+ snd_printk(KERN_ERR "cannot remap io memory\n");
+ return -ENOMEM;
+ }
+
+ chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
+ snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
+ snd_bt87x_writel(chip, REG_INT_MASK, 0);
+ snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
+
+ if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ,
+ "Bt87x audio", chip)) {
+ snd_bt87x_free(chip);
+ snd_printk(KERN_ERR "cannot grab irq\n");
+ return -EBUSY;
+ }
+ chip->irq = pci->irq;
+ pci_set_master(pci);
+ synchronize_irq(chip->irq);
+
+ err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+ if (err < 0) {
+ snd_bt87x_free(chip);
+ return err;
+ }
+ snd_card_set_dev(card, &pci->dev);
+ *rchip = chip;
+ return 0;
+}
+
+static int __devinit snd_bt87x_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
+{
+ static int dev;
+ snd_card_t *card;
+ bt87x_t *chip;
+ int err;
+
+ if (dev >= SNDRV_CARDS)
+ return -ENODEV;
+ if (!enable[dev]) {
+ ++dev;
+ return -ENOENT;
+ }
+
+ card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+ if (!card)
+ return -ENOMEM;
+
+ err = snd_bt87x_create(card, pci, &chip);
+ if (err < 0)
+ goto _error;
+
+ if (digital_rate[dev] > 0)
+ chip->dig_rate = digital_rate[dev];
+ else
+ chip->dig_rate = (int)pci_id->driver_data;
+
+ err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
+ if (err < 0)
+ goto _error;
+ err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
+ if (err < 0)
+ goto _error;
+
+ err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
+ if (err < 0)
+ goto _error;
+ err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
+ if (err < 0)
+ goto _error;
+ err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
+ if (err < 0)
+ goto _error;
+
+ strcpy(card->driver, "Bt87x");
+ sprintf(card->shortname, "Brooktree Bt%x", pci->device);
+ sprintf(card->longname, "%s at %#lx, irq %i",
+ card->shortname, pci_resource_start(pci, 0), chip->irq);
+ strcpy(card->mixername, "Bt87x");
+
+ err = snd_card_register(card);
+ if (err < 0)
+ goto _error;
+
+ pci_set_drvdata(pci, chip);
+ ++dev;
+ return 0;
+
+_error:
+ snd_card_free(card);
+ return err;
+}
+
+static void __devexit snd_bt87x_remove(struct pci_dev *pci)
+{
+ bt87x_t *chip = snd_magic_cast(bt87x_t, pci_get_drvdata(pci), return);
+ if (chip)
+ snd_card_free(chip->card);
+ pci_set_drvdata(pci, NULL);
+}
+
+#define BT_DEVICE(chip, subvend, subdev, rate) \
+ { .vendor = PCI_VENDOR_ID_BROOKTREE, \
+ .device = PCI_DEVICE_ID_BROOKTREE_##chip, \
+ .subvendor = subvend, .subdevice = subdev, \
+ .driver_data = rate }
+
+/* driver_data is the default digital_rate value for that device */
+static struct pci_device_id snd_bt87x_ids[] = {
+ BT_DEVICE(878, 0x0070, 0xff01, 44100), /* Osprey 200 */
+
+ /* default entries for 32kHz and generic Bt87x cards */
+ BT_DEVICE(878, PCI_ANY_ID, PCI_ANY_ID, 32000),
+ BT_DEVICE(879, PCI_ANY_ID, PCI_ANY_ID, 32000),
+ { }
+};
+MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
+
+static struct pci_driver driver = {
+ .name = "Bt87x",
+ .id_table = snd_bt87x_ids,
+ .probe = snd_bt87x_probe,
+ .remove = __devexit_p(snd_bt87x_remove),
+};
+
+static int __init alsa_card_bt87x_init(void)
+{
+ int err;
+
+ err = pci_module_init(&driver);
+ if (err < 0) {
+#ifdef MODULE
+ printk(KERN_ERR "Bt87x soundcard not found or device busy\n");
+#endif
+ return err;
+ }
+ return 0;
+}
+
+static void __exit alsa_card_bt87x_exit(void)
+{
+ pci_unregister_driver(&driver);
+}
+
+module_init(alsa_card_bt87x_init)
+module_exit(alsa_card_bt87x_exit)
+
+#ifndef MODULE
+
+/* format is: snd-bt87x=enable,index,id */
+
+static int __init alsa_card_bt87x_setup(char *str)
+{
+ static unsigned __initdata nr_dev = 0;
+
+ if (nr_dev >= SNDRV_CARDS)
+ return 0;
+ (void)(get_option(&str,&enable[nr_dev]) == 2 &&
+ get_option(&str,&index[nr_dev]) == 2 &&
+ get_id(&str,&id[nr_dev]) == 2);
+ nr_dev++;
+ return 1;
+}
+
+__setup("snd-bt87x=", alsa_card_bt87x_setup);
+
+#endif /* ifndef MODULE */
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