diff options
Diffstat (limited to 'sound/pcmcia/vx/vxp_ops.c')
| -rw-r--r-- | sound/pcmcia/vx/vxp_ops.c | 599 |
1 files changed, 599 insertions, 0 deletions
diff --git a/sound/pcmcia/vx/vxp_ops.c b/sound/pcmcia/vx/vxp_ops.c new file mode 100644 index 000000000..45eeb0f57 --- /dev/null +++ b/sound/pcmcia/vx/vxp_ops.c @@ -0,0 +1,599 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Digigram VXpocket soundcards + * + * lowlevel routines for VXpocket soundcards + * + * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> + */ + +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/firmware.h> +#include <linux/io.h> +#include <sound/core.h> +#include "vxpocket.h" + + +static const int vxp_reg_offset[VX_REG_MAX] = { + [VX_ICR] = 0x00, // ICR + [VX_CVR] = 0x01, // CVR + [VX_ISR] = 0x02, // ISR + [VX_IVR] = 0x03, // IVR + [VX_RXH] = 0x05, // RXH + [VX_RXM] = 0x06, // RXM + [VX_RXL] = 0x07, // RXL + [VX_DMA] = 0x04, // DMA + [VX_CDSP] = 0x08, // CDSP + [VX_LOFREQ] = 0x09, // LFREQ + [VX_HIFREQ] = 0x0a, // HFREQ + [VX_DATA] = 0x0b, // DATA + [VX_MICRO] = 0x0c, // MICRO + [VX_DIALOG] = 0x0d, // DIALOG + [VX_CSUER] = 0x0e, // CSUER + [VX_RUER] = 0x0f, // RUER +}; + + +static inline unsigned long vxp_reg_addr(struct vx_core *_chip, int reg) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + return chip->port + vxp_reg_offset[reg]; +} + +/* + * snd_vx_inb - read a byte from the register + * @offset: register offset + */ +static unsigned char vxp_inb(struct vx_core *chip, int offset) +{ + return inb(vxp_reg_addr(chip, offset)); +} + +/* + * snd_vx_outb - write a byte on the register + * @offset: the register offset + * @val: the value to write + */ +static void vxp_outb(struct vx_core *chip, int offset, unsigned char val) +{ + outb(val, vxp_reg_addr(chip, offset)); +} + +/* + * redefine macros to call directly + */ +#undef vx_inb +#define vx_inb(chip,reg) vxp_inb((struct vx_core *)(chip), VX_##reg) +#undef vx_outb +#define vx_outb(chip,reg,val) vxp_outb((struct vx_core *)(chip), VX_##reg,val) + + +/* + * vx_check_magic - check the magic word on xilinx + * + * returns zero if a magic word is detected, or a negative error code. + */ +static int vx_check_magic(struct vx_core *chip) +{ + unsigned long end_time = jiffies + HZ / 5; + int c; + do { + c = vx_inb(chip, CDSP); + if (c == CDSP_MAGIC) + return 0; + msleep(10); + } while (time_after_eq(end_time, jiffies)); + snd_printk(KERN_ERR "cannot find xilinx magic word (%x)\n", c); + return -EIO; +} + + +/* + * vx_reset_dsp - reset the DSP + */ + +#define XX_DSP_RESET_WAIT_TIME 2 /* ms */ + +static void vxp_reset_dsp(struct vx_core *_chip) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + + /* set the reset dsp bit to 1 */ + vx_outb(chip, CDSP, chip->regCDSP | VXP_CDSP_DSP_RESET_MASK); + vx_inb(chip, CDSP); + mdelay(XX_DSP_RESET_WAIT_TIME); + /* reset the bit */ + chip->regCDSP &= ~VXP_CDSP_DSP_RESET_MASK; + vx_outb(chip, CDSP, chip->regCDSP); + vx_inb(chip, CDSP); + mdelay(XX_DSP_RESET_WAIT_TIME); +} + +/* + * reset codec bit + */ +static void vxp_reset_codec(struct vx_core *_chip) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + + /* Set the reset CODEC bit to 1. */ + vx_outb(chip, CDSP, chip->regCDSP | VXP_CDSP_CODEC_RESET_MASK); + vx_inb(chip, CDSP); + msleep(10); + /* Set the reset CODEC bit to 0. */ + chip->regCDSP &= ~VXP_CDSP_CODEC_RESET_MASK; + vx_outb(chip, CDSP, chip->regCDSP); + vx_inb(chip, CDSP); + msleep(1); +} + +/* + * vx_load_xilinx_binary - load the xilinx binary image + * the binary image is the binary array converted from the bitstream file. + */ +static int vxp_load_xilinx_binary(struct vx_core *_chip, const struct firmware *fw) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + unsigned int i; + int c; + int regCSUER, regRUER; + const unsigned char *image; + unsigned char data; + + /* Switch to programmation mode */ + chip->regDIALOG |= VXP_DLG_XILINX_REPROG_MASK; + vx_outb(chip, DIALOG, chip->regDIALOG); + + /* Save register CSUER and RUER */ + regCSUER = vx_inb(chip, CSUER); + regRUER = vx_inb(chip, RUER); + + /* reset HF0 and HF1 */ + vx_outb(chip, ICR, 0); + + /* Wait for answer HF2 equal to 1 */ + snd_printdd(KERN_DEBUG "check ISR_HF2\n"); + if (vx_check_isr(_chip, ISR_HF2, ISR_HF2, 20) < 0) + goto _error; + + /* set HF1 for loading xilinx binary */ + vx_outb(chip, ICR, ICR_HF1); + image = fw->data; + for (i = 0; i < fw->size; i++, image++) { + data = *image; + if (vx_wait_isr_bit(_chip, ISR_TX_EMPTY) < 0) + goto _error; + vx_outb(chip, TXL, data); + /* wait for reading */ + if (vx_wait_for_rx_full(_chip) < 0) + goto _error; + c = vx_inb(chip, RXL); + if (c != (int)data) + snd_printk(KERN_ERR "vxpocket: load xilinx mismatch at %d: 0x%x != 0x%x\n", i, c, (int)data); + } + + /* reset HF1 */ + vx_outb(chip, ICR, 0); + + /* wait for HF3 */ + if (vx_check_isr(_chip, ISR_HF3, ISR_HF3, 20) < 0) + goto _error; + + /* read the number of bytes received */ + if (vx_wait_for_rx_full(_chip) < 0) + goto _error; + + c = (int)vx_inb(chip, RXH) << 16; + c |= (int)vx_inb(chip, RXM) << 8; + c |= vx_inb(chip, RXL); + + snd_printdd(KERN_DEBUG "xilinx: dsp size received 0x%x, orig 0x%zx\n", c, fw->size); + + vx_outb(chip, ICR, ICR_HF0); + + /* TEMPO 250ms : wait until Xilinx is downloaded */ + msleep(300); + + /* test magical word */ + if (vx_check_magic(_chip) < 0) + goto _error; + + /* Restore register 0x0E and 0x0F (thus replacing COR and FCSR) */ + vx_outb(chip, CSUER, regCSUER); + vx_outb(chip, RUER, regRUER); + + /* Reset the Xilinx's signal enabling IO access */ + chip->regDIALOG |= VXP_DLG_XILINX_REPROG_MASK; + vx_outb(chip, DIALOG, chip->regDIALOG); + vx_inb(chip, DIALOG); + msleep(10); + chip->regDIALOG &= ~VXP_DLG_XILINX_REPROG_MASK; + vx_outb(chip, DIALOG, chip->regDIALOG); + vx_inb(chip, DIALOG); + + /* Reset of the Codec */ + vxp_reset_codec(_chip); + vx_reset_dsp(_chip); + + return 0; + + _error: + vx_outb(chip, CSUER, regCSUER); + vx_outb(chip, RUER, regRUER); + chip->regDIALOG &= ~VXP_DLG_XILINX_REPROG_MASK; + vx_outb(chip, DIALOG, chip->regDIALOG); + return -EIO; +} + + +/* + * vxp_load_dsp - load_dsp callback + */ +static int vxp_load_dsp(struct vx_core *vx, int index, const struct firmware *fw) +{ + int err; + + switch (index) { + case 0: + /* xilinx boot */ + if ((err = vx_check_magic(vx)) < 0) + return err; + if ((err = snd_vx_load_boot_image(vx, fw)) < 0) + return err; + return 0; + case 1: + /* xilinx image */ + return vxp_load_xilinx_binary(vx, fw); + case 2: + /* DSP boot */ + return snd_vx_dsp_boot(vx, fw); + case 3: + /* DSP image */ + return snd_vx_dsp_load(vx, fw); + default: + snd_BUG(); + return -EINVAL; + } +} + + +/* + * vx_test_and_ack - test and acknowledge interrupt + * + * called from irq hander, too + * + * spinlock held! + */ +static int vxp_test_and_ack(struct vx_core *_chip) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + + /* not booted yet? */ + if (! (_chip->chip_status & VX_STAT_XILINX_LOADED)) + return -ENXIO; + + if (! (vx_inb(chip, DIALOG) & VXP_DLG_MEMIRQ_MASK)) + return -EIO; + + /* ok, interrupts generated, now ack it */ + /* set ACQUIT bit up and down */ + vx_outb(chip, DIALOG, chip->regDIALOG | VXP_DLG_ACK_MEMIRQ_MASK); + /* useless read just to spend some time and maintain + * the ACQUIT signal up for a while ( a bus cycle ) + */ + vx_inb(chip, DIALOG); + vx_outb(chip, DIALOG, chip->regDIALOG & ~VXP_DLG_ACK_MEMIRQ_MASK); + + return 0; +} + + +/* + * vx_validate_irq - enable/disable IRQ + */ +static void vxp_validate_irq(struct vx_core *_chip, int enable) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + + /* Set the interrupt enable bit to 1 in CDSP register */ + if (enable) + chip->regCDSP |= VXP_CDSP_VALID_IRQ_MASK; + else + chip->regCDSP &= ~VXP_CDSP_VALID_IRQ_MASK; + vx_outb(chip, CDSP, chip->regCDSP); +} + +/* + * vx_setup_pseudo_dma - set up the pseudo dma read/write mode. + * @do_write: 0 = read, 1 = set up for DMA write + */ +static void vx_setup_pseudo_dma(struct vx_core *_chip, int do_write) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + + /* Interrupt mode and HREQ pin enabled for host transmit / receive data transfers */ + vx_outb(chip, ICR, do_write ? ICR_TREQ : ICR_RREQ); + /* Reset the pseudo-dma register */ + vx_inb(chip, ISR); + vx_outb(chip, ISR, 0); + + /* Select DMA in read/write transfer mode and in 16-bit accesses */ + chip->regDIALOG |= VXP_DLG_DMA16_SEL_MASK; + chip->regDIALOG |= do_write ? VXP_DLG_DMAWRITE_SEL_MASK : VXP_DLG_DMAREAD_SEL_MASK; + vx_outb(chip, DIALOG, chip->regDIALOG); + +} + +/* + * vx_release_pseudo_dma - disable the pseudo-DMA mode + */ +static void vx_release_pseudo_dma(struct vx_core *_chip) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + + /* Disable DMA and 16-bit accesses */ + chip->regDIALOG &= ~(VXP_DLG_DMAWRITE_SEL_MASK| + VXP_DLG_DMAREAD_SEL_MASK| + VXP_DLG_DMA16_SEL_MASK); + vx_outb(chip, DIALOG, chip->regDIALOG); + /* HREQ pin disabled. */ + vx_outb(chip, ICR, 0); +} + +/* + * vx_pseudo_dma_write - write bulk data on pseudo-DMA mode + * @count: data length to transfer in bytes + * + * data size must be aligned to 6 bytes to ensure the 24bit alignment on DSP. + * NB: call with a certain lock! + */ +static void vxp_dma_write(struct vx_core *chip, struct snd_pcm_runtime *runtime, + struct vx_pipe *pipe, int count) +{ + long port = vxp_reg_addr(chip, VX_DMA); + int offset = pipe->hw_ptr; + unsigned short *addr = (unsigned short *)(runtime->dma_area + offset); + + vx_setup_pseudo_dma(chip, 1); + if (offset + count >= pipe->buffer_bytes) { + int length = pipe->buffer_bytes - offset; + count -= length; + length >>= 1; /* in 16bit words */ + /* Transfer using pseudo-dma. */ + for (; length > 0; length--) { + outw(*addr, port); + addr++; + } + addr = (unsigned short *)runtime->dma_area; + pipe->hw_ptr = 0; + } + pipe->hw_ptr += count; + count >>= 1; /* in 16bit words */ + /* Transfer using pseudo-dma. */ + for (; count > 0; count--) { + outw(*addr, port); + addr++; + } + vx_release_pseudo_dma(chip); +} + + +/* + * vx_pseudo_dma_read - read bulk data on pseudo DMA mode + * @offset: buffer offset in bytes + * @count: data length to transfer in bytes + * + * the read length must be aligned to 6 bytes, as well as write. + * NB: call with a certain lock! + */ +static void vxp_dma_read(struct vx_core *chip, struct snd_pcm_runtime *runtime, + struct vx_pipe *pipe, int count) +{ + struct snd_vxpocket *pchip = to_vxpocket(chip); + long port = vxp_reg_addr(chip, VX_DMA); + int offset = pipe->hw_ptr; + unsigned short *addr = (unsigned short *)(runtime->dma_area + offset); + + if (snd_BUG_ON(count % 2)) + return; + vx_setup_pseudo_dma(chip, 0); + if (offset + count >= pipe->buffer_bytes) { + int length = pipe->buffer_bytes - offset; + count -= length; + length >>= 1; /* in 16bit words */ + /* Transfer using pseudo-dma. */ + for (; length > 0; length--) + *addr++ = inw(port); + addr = (unsigned short *)runtime->dma_area; + pipe->hw_ptr = 0; + } + pipe->hw_ptr += count; + count >>= 1; /* in 16bit words */ + /* Transfer using pseudo-dma. */ + for (; count > 1; count--) + *addr++ = inw(port); + /* Disable DMA */ + pchip->regDIALOG &= ~VXP_DLG_DMAREAD_SEL_MASK; + vx_outb(chip, DIALOG, pchip->regDIALOG); + /* Read the last word (16 bits) */ + *addr = inw(port); + /* Disable 16-bit accesses */ + pchip->regDIALOG &= ~VXP_DLG_DMA16_SEL_MASK; + vx_outb(chip, DIALOG, pchip->regDIALOG); + /* HREQ pin disabled. */ + vx_outb(chip, ICR, 0); +} + + +/* + * write a codec data (24bit) + */ +static void vxp_write_codec_reg(struct vx_core *chip, int codec, unsigned int data) +{ + int i; + + /* Activate access to the corresponding codec register */ + if (! codec) + vx_inb(chip, LOFREQ); + else + vx_inb(chip, CODEC2); + + /* We have to send 24 bits (3 x 8 bits). Start with most signif. Bit */ + for (i = 0; i < 24; i++, data <<= 1) + vx_outb(chip, DATA, ((data & 0x800000) ? VX_DATA_CODEC_MASK : 0)); + + /* Terminate access to codec registers */ + vx_inb(chip, HIFREQ); +} + + +/* + * vx_set_mic_boost - set mic boost level (on vxp440 only) + * @boost: 0 = 20dB, 1 = +38dB + */ +void vx_set_mic_boost(struct vx_core *chip, int boost) +{ + struct snd_vxpocket *pchip = to_vxpocket(chip); + + if (chip->chip_status & VX_STAT_IS_STALE) + return; + + mutex_lock(&chip->lock); + if (pchip->regCDSP & P24_CDSP_MICS_SEL_MASK) { + if (boost) { + /* boost: 38 dB */ + pchip->regCDSP &= ~P24_CDSP_MIC20_SEL_MASK; + pchip->regCDSP |= P24_CDSP_MIC38_SEL_MASK; + } else { + /* minimum value: 20 dB */ + pchip->regCDSP |= P24_CDSP_MIC20_SEL_MASK; + pchip->regCDSP &= ~P24_CDSP_MIC38_SEL_MASK; + } + vx_outb(chip, CDSP, pchip->regCDSP); + } + mutex_unlock(&chip->lock); +} + +/* + * remap the linear value (0-8) to the actual value (0-15) + */ +static int vx_compute_mic_level(int level) +{ + switch (level) { + case 5: level = 6 ; break; + case 6: level = 8 ; break; + case 7: level = 11; break; + case 8: level = 15; break; + default: break ; + } + return level; +} + +/* + * vx_set_mic_level - set mic level (on vxpocket only) + * @level: the mic level = 0 - 8 (max) + */ +void vx_set_mic_level(struct vx_core *chip, int level) +{ + struct snd_vxpocket *pchip = to_vxpocket(chip); + + if (chip->chip_status & VX_STAT_IS_STALE) + return; + + mutex_lock(&chip->lock); + if (pchip->regCDSP & VXP_CDSP_MIC_SEL_MASK) { + level = vx_compute_mic_level(level); + vx_outb(chip, MICRO, level); + } + mutex_unlock(&chip->lock); +} + + +/* + * change the input audio source + */ +static void vxp_change_audio_source(struct vx_core *_chip, int src) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + + switch (src) { + case VX_AUDIO_SRC_DIGITAL: + chip->regCDSP |= VXP_CDSP_DATAIN_SEL_MASK; + vx_outb(chip, CDSP, chip->regCDSP); + break; + case VX_AUDIO_SRC_LINE: + chip->regCDSP &= ~VXP_CDSP_DATAIN_SEL_MASK; + if (_chip->type == VX_TYPE_VXP440) + chip->regCDSP &= ~P24_CDSP_MICS_SEL_MASK; + else + chip->regCDSP &= ~VXP_CDSP_MIC_SEL_MASK; + vx_outb(chip, CDSP, chip->regCDSP); + break; + case VX_AUDIO_SRC_MIC: + chip->regCDSP &= ~VXP_CDSP_DATAIN_SEL_MASK; + /* reset mic levels */ + if (_chip->type == VX_TYPE_VXP440) { + chip->regCDSP &= ~P24_CDSP_MICS_SEL_MASK; + if (chip->mic_level) + chip->regCDSP |= P24_CDSP_MIC38_SEL_MASK; + else + chip->regCDSP |= P24_CDSP_MIC20_SEL_MASK; + vx_outb(chip, CDSP, chip->regCDSP); + } else { + chip->regCDSP |= VXP_CDSP_MIC_SEL_MASK; + vx_outb(chip, CDSP, chip->regCDSP); + vx_outb(chip, MICRO, vx_compute_mic_level(chip->mic_level)); + } + break; + } +} + +/* + * change the clock source + * source = INTERNAL_QUARTZ or UER_SYNC + */ +static void vxp_set_clock_source(struct vx_core *_chip, int source) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + + if (source == INTERNAL_QUARTZ) + chip->regCDSP &= ~VXP_CDSP_CLOCKIN_SEL_MASK; + else + chip->regCDSP |= VXP_CDSP_CLOCKIN_SEL_MASK; + vx_outb(chip, CDSP, chip->regCDSP); +} + + +/* + * reset the board + */ +static void vxp_reset_board(struct vx_core *_chip, int cold_reset) +{ + struct snd_vxpocket *chip = to_vxpocket(_chip); + + chip->regCDSP = 0; + chip->regDIALOG = 0; +} + + +/* + * callbacks + */ +/* exported */ +const struct snd_vx_ops snd_vxpocket_ops = { + .in8 = vxp_inb, + .out8 = vxp_outb, + .test_and_ack = vxp_test_and_ack, + .validate_irq = vxp_validate_irq, + .write_codec = vxp_write_codec_reg, + .reset_codec = vxp_reset_codec, + .change_audio_source = vxp_change_audio_source, + .set_clock_source = vxp_set_clock_source, + .load_dsp = vxp_load_dsp, + .add_controls = vxp_add_mic_controls, + .reset_dsp = vxp_reset_dsp, + .reset_board = vxp_reset_board, + .dma_write = vxp_dma_write, + .dma_read = vxp_dma_read, +}; |