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