diff options
Diffstat (limited to 'sound/pci/bt87x.c')
| -rw-r--r-- | sound/pci/bt87x.c | 930 |
1 files changed, 930 insertions, 0 deletions
diff --git a/sound/pci/bt87x.c b/sound/pci/bt87x.c new file mode 100644 index 000000000000..89a7ffe5e7d7 --- /dev/null +++ b/sound/pci/bt87x.c @@ -0,0 +1,930 @@ +/* + * 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 <linux/moduleparam.h> +#include <linux/bitops.h> +#include <asm/io.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/control.h> +#include <sound/initval.h> + +MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); +MODULE_DESCRIPTION("Brooktree Bt87x audio driver"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878}," + "{Brooktree,Bt879}}"); + +static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */ +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 */ +static int load_all; /* allow to load the non-whitelisted cards */ + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for Bt87x soundcard"); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for Bt87x soundcard"); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable Bt87x soundcard"); +module_param_array(digital_rate, int, NULL, 0444); +MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard"); +module_param(load_all, bool, 0444); +MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards"); + + +#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 ANALOG_CLOCK 1792000 +#ifdef CONFIG_SND_BT87X_OVERCLOCK +#define CLOCK_DIV_MIN 1 +#else +#define CLOCK_DIV_MIN 4 +#endif +#define CLOCK_DIV_MAX 15 + +#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) + +typedef struct snd_bt87x bt87x_t; +struct snd_bt87x { + snd_card_t *card; + struct pci_dev *pci; + + void __iomem *mmio; + int irq; + + int dig_rate; + + spinlock_t reg_lock; + long opened; + snd_pcm_substream_t *substream; + + struct snd_dma_buffer dma_risc; + unsigned int line_bytes; + unsigned int lines; + + u32 reg_control; + u32 interrupt_mask; + + int current_line; + + int pci_parity_errors; +}; + +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->dma_risc.area == NULL) { + if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), + PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0) + return -ENOMEM; + } + risc = (u32 *)chip->dma_risc.area; + 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->dma_risc.addr); + chip->line_bytes = period_bytes; + chip->lines = periods; + return 0; +} + +static void snd_bt87x_free_risc(bt87x_t *chip) +{ + if (chip->dma_risc.area) { + snd_dma_free_pages(&chip->dma_risc); + chip->dma_risc.area = NULL; + } +} + +static void snd_bt87x_pci_error(bt87x_t *chip, unsigned int status) +{ + u16 pci_status; + + pci_read_config_word(chip->pci, PCI_STATUS, &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; + pci_write_config_word(chip->pci, PCI_STATUS, pci_status); + if (pci_status != PCI_STATUS_DETECTED_PARITY) + snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n", + status & ERROR_INTERRUPTS, pci_status); + else { + snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n"); + /* error 'handling' similar to aic7xxx_pci.c: */ + chip->pci_parity_errors++; + if (chip->pci_parity_errors > 20) { + snd_printk(KERN_ERR "Too many PCI parity errors observed.\n"); + snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n"); + snd_printk(KERN_ERR "This is an error *observed by*, not *generated by*, this card.\n"); + snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n"); + chip->interrupt_mask &= ~(INT_PPERR | INT_RIPERR); + snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask); + } + } +} + +static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + bt87x_t *chip = dev_id; + unsigned int status, irq_status; + + status = snd_bt87x_readl(chip, REG_INT_STAT); + irq_status = status & chip->interrupt_mask; + if (!irq_status) + return IRQ_NONE; + snd_bt87x_writel(chip, REG_INT_STAT, irq_status); + + if (irq_status & ERROR_INTERRUPTS) { + if (irq_status & (INT_FBUS | INT_FTRGT)) + snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status); + if (irq_status & INT_OCERR) + snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status); + if (irq_status & (INT_PPERR | INT_RIPERR | INT_PABORT)) + snd_bt87x_pci_error(chip, irq_status); + } + if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) { + 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 = ANALOG_CLOCK / CLOCK_DIV_MAX, + .rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN, + .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 ratnum_t analog_clock = { + .num = ANALOG_CLOCK, + .den_min = CLOCK_DIV_MIN, + .den_max = CLOCK_DIV_MAX, + .den_step = 1 + }; + static snd_pcm_hw_constraint_ratnums_t constraint_rates = { + .nrats = 1, + .rats = &analog_clock + }; + + chip->reg_control &= ~CTL_DA_IOM_DA; + runtime->hw = snd_bt87x_analog_hw; + return snd_pcm_hw_constraint_ratnums(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; + int decimation; + + spin_lock_irq(&chip->reg_lock); + chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR); + decimation = (ANALOG_CLOCK + runtime->rate / 4) / 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_irq(&chip->reg_lock); + return 0; +} + +static int snd_bt87x_start(bt87x_t *chip) +{ + spin_lock(&chip->reg_lock); + 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->dma_risc.addr); + snd_bt87x_writel(chip, REG_PACKET_LEN, + chip->line_bytes | (chip->lines << 16)); + snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask); + snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control); + spin_unlock(&chip->reg_lock); + return 0; +} + +static int snd_bt87x_stop(bt87x_t *chip) +{ + spin_lock(&chip->reg_lock); + 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(&chip->reg_lock); + 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); + u32 old_control; + int changed; + + spin_lock_irq(&chip->reg_lock); + 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_irq(&chip->reg_lock); + 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); + u32 old_control; + int changed; + + spin_lock_irq(&chip->reg_lock); + 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_irq(&chip->reg_lock); + 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); + u32 old_control; + int changed; + + spin_lock_irq(&chip->reg_lock); + 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_irq(&chip->reg_lock); + 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->irq >= 0) + free_irq(chip->irq, chip); + pci_release_regions(chip->pci); + pci_disable_device(chip->pci); + kfree(chip); + return 0; +} + +static int snd_bt87x_dev_free(snd_device_t *device) +{ + bt87x_t *chip = device->device_data; + 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_pages_for_all(pcm, + SNDRV_DMA_TYPE_DEV_SG, + snd_dma_pci_data(chip->pci), + 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 = kcalloc(1, sizeof(*chip), GFP_KERNEL); + if (!chip) { + pci_disable_device(pci); + return -ENOMEM; + } + chip->card = card; + chip->pci = pci; + chip->irq = -1; + spin_lock_init(&chip->reg_lock); + + if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) { + kfree(chip); + pci_disable_device(pci); + return err; + } + 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); + chip->interrupt_mask = MY_INTERRUPTS; + 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; +} + +#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, 0x13eb, 32000), /* Hauppauge WinTV series */ + BT_DEVICE(879, 0x0070, 0x13eb, 32000), /* Hauppauge WinTV series */ + BT_DEVICE(878, 0x0070, 0xff01, 44100), /* Viewcast Osprey 200 */ + { } +}; +MODULE_DEVICE_TABLE(pci, snd_bt87x_ids); + +/* cards known not to have audio + * (DVB cards use the audio function to transfer MPEG data) */ +static struct { + unsigned short subvendor, subdevice; +} blacklist[] __devinitdata = { + {0x0071, 0x0101}, /* Nebula Electronics DigiTV */ + {0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */ + {0x1461, 0x0761}, /* AVermedia AverTV DVB-T */ + {0x1461, 0x0771}, /* AVermedia DVB-T 771 */ + {0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */ + {0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */ + {0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */ +}; + +/* return the rate of the card, or a negative value if it's blacklisted */ +static int __devinit snd_bt87x_detect_card(struct pci_dev *pci) +{ + int i; + const struct pci_device_id *supported; + + supported = pci_match_device(snd_bt87x_ids, pci); + if (supported) + return supported->driver_data; + + for (i = 0; i < ARRAY_SIZE(blacklist); ++i) + if (blacklist[i].subvendor == pci->subsystem_vendor && + blacklist[i].subdevice == pci->subsystem_device) { + snd_printdd(KERN_INFO "card %#04x:%#04x has no audio\n", + pci->subsystem_vendor, pci->subsystem_device); + return -EBUSY; + } + + snd_printk(KERN_INFO "unknown card %#04x:%#04x, using default rate 32000\n", + pci->subsystem_vendor, pci->subsystem_device); + snd_printk(KERN_DEBUG "please mail id, board name, and, " + "if it works, the correct digital_rate option to " + "<alsa-devel@lists.sf.net>\n"); + return 32000; /* default rate */ +} + +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, rate; + + rate = pci_id->driver_data; + if (! rate) + if ((rate = snd_bt87x_detect_card(pci)) <= 0) + return -ENODEV; + + 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 = rate; + + 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, card); + ++dev; + return 0; + +_error: + snd_card_free(card); + return err; +} + +static void __devexit snd_bt87x_remove(struct pci_dev *pci) +{ + snd_card_free(pci_get_drvdata(pci)); + pci_set_drvdata(pci, NULL); +} + +/* default entries for all Bt87x cards - it's not exported */ +/* driver_data is set to 0 to call detection */ +static struct pci_device_id snd_bt87x_default_ids[] = { + BT_DEVICE(878, PCI_ANY_ID, PCI_ANY_ID, 0), + BT_DEVICE(879, PCI_ANY_ID, PCI_ANY_ID, 0), + { } +}; + +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) +{ + if (load_all) + driver.id_table = snd_bt87x_default_ids; + return pci_module_init(&driver); +} + +static void __exit alsa_card_bt87x_exit(void) +{ + pci_unregister_driver(&driver); +} + +module_init(alsa_card_bt87x_init) +module_exit(alsa_card_bt87x_exit) |