1/* 2 * Driver for Sound Core PDAudioCF soundcard 3 * 4 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21#include <linux/delay.h> 22#include <linux/slab.h> 23#include <sound/core.h> 24#include <sound/info.h> 25#include "pdaudiocf.h" 26#include <sound/initval.h> 27 28/* 29 * 30 */ 31static unsigned char pdacf_ak4117_read(void *private_data, unsigned char reg) 32{ 33 struct snd_pdacf *chip = private_data; 34 unsigned long timeout; 35 unsigned long flags; 36 unsigned char res; 37 38 spin_lock_irqsave(&chip->ak4117_lock, flags); 39 timeout = 1000; 40 while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) { 41 udelay(5); 42 if (--timeout == 0) { 43 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 44 snd_printk(KERN_ERR "AK4117 ready timeout (read)\n"); 45 return 0; 46 } 47 } 48 pdacf_reg_write(chip, PDAUDIOCF_REG_AK_IFR, (u16)reg << 8); 49 timeout = 1000; 50 while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) { 51 udelay(5); 52 if (--timeout == 0) { 53 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 54 snd_printk(KERN_ERR "AK4117 read timeout (read2)\n"); 55 return 0; 56 } 57 } 58 res = (unsigned char)pdacf_reg_read(chip, PDAUDIOCF_REG_AK_IFR); 59 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 60 return res; 61} 62 63static void pdacf_ak4117_write(void *private_data, unsigned char reg, unsigned char val) 64{ 65 struct snd_pdacf *chip = private_data; 66 unsigned long timeout; 67 unsigned long flags; 68 69 spin_lock_irqsave(&chip->ak4117_lock, flags); 70 timeout = 1000; 71 while (inw(chip->port + PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) { 72 udelay(5); 73 if (--timeout == 0) { 74 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 75 snd_printk(KERN_ERR "AK4117 ready timeout (write)\n"); 76 return; 77 } 78 } 79 outw((u16)reg << 8 | val | (1<<13), chip->port + PDAUDIOCF_REG_AK_IFR); 80 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 81} 82 83 84static int pdacf_reset(struct snd_pdacf *chip, int powerdown) 85{ 86 u16 val; 87 88 val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); 89 val |= PDAUDIOCF_PDN; 90 val &= ~PDAUDIOCF_RECORD; /* for sure */ 91 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 92 udelay(5); 93 val |= PDAUDIOCF_RST; 94 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 95 udelay(200); 96 val &= ~PDAUDIOCF_RST; 97 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 98 udelay(5); 99 if (!powerdown) { 100 val &= ~PDAUDIOCF_PDN; 101 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 102 udelay(200); 103 } 104 return 0; 105} 106 107void pdacf_reinit(struct snd_pdacf *chip, int resume) 108{ 109 pdacf_reset(chip, 0); 110 if (resume) 111 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, chip->suspend_reg_scr); 112 snd_ak4117_reinit(chip->ak4117); 113 pdacf_reg_write(chip, PDAUDIOCF_REG_TCR, chip->regmap[PDAUDIOCF_REG_TCR>>1]); 114 pdacf_reg_write(chip, PDAUDIOCF_REG_IER, chip->regmap[PDAUDIOCF_REG_IER>>1]); 115} 116 117static void pdacf_proc_read(struct snd_info_entry * entry, 118 struct snd_info_buffer *buffer) 119{ 120 struct snd_pdacf *chip = entry->private_data; 121 u16 tmp; 122 123 snd_iprintf(buffer, "PDAudioCF\n\n"); 124 tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); 125 snd_iprintf(buffer, "FPGA revision : 0x%x\n", PDAUDIOCF_FPGAREV(tmp)); 126 127} 128 129static void pdacf_proc_init(struct snd_pdacf *chip) 130{ 131 struct snd_info_entry *entry; 132 133 if (! snd_card_proc_new(chip->card, "pdaudiocf", &entry)) 134 snd_info_set_text_ops(entry, chip, pdacf_proc_read); 135} 136 137struct snd_pdacf *snd_pdacf_create(struct snd_card *card) 138{ 139 struct snd_pdacf *chip; 140 141 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 142 if (chip == NULL) 143 return NULL; 144 chip->card = card; 145 spin_lock_init(&chip->reg_lock); 146 spin_lock_init(&chip->ak4117_lock); 147 tasklet_init(&chip->tq, pdacf_tasklet, (unsigned long)chip); 148 card->private_data = chip; 149 150 pdacf_proc_init(chip); 151 return chip; 152} 153 154static void snd_pdacf_ak4117_change(struct ak4117 *ak4117, unsigned char c0, unsigned char c1) 155{ 156 struct snd_pdacf *chip = ak4117->change_callback_private; 157 unsigned long flags; 158 u16 val; 159 160 if (!(c0 & AK4117_UNLCK)) 161 return; 162 spin_lock_irqsave(&chip->reg_lock, flags); 163 val = chip->regmap[PDAUDIOCF_REG_SCR>>1]; 164 if (ak4117->rcs0 & AK4117_UNLCK) 165 val |= PDAUDIOCF_BLUE_LED_OFF; 166 else 167 val &= ~PDAUDIOCF_BLUE_LED_OFF; 168 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 169 spin_unlock_irqrestore(&chip->reg_lock, flags); 170} 171 172int snd_pdacf_ak4117_create(struct snd_pdacf *chip) 173{ 174 int err; 175 u16 val; 176 /* design note: if we unmask PLL unlock, parity, valid, audio or auto bit interrupts */ 177 /* from AK4117 then INT1 pin from AK4117 will be high all time, because PCMCIA interrupts are */ 178 /* egde based and FPGA does logical OR for all interrupt sources, we cannot use these */ 179 /* high-rate sources */ 180 static unsigned char pgm[5] = { 181 AK4117_XTL_24_576M | AK4117_EXCT, /* AK4117_REG_PWRDN */ 182 AK4117_CM_PLL_XTAL | AK4117_PKCS_128fs | AK4117_XCKS_128fs, /* AK4117_REQ_CLOCK */ 183 AK4117_EFH_1024LRCLK | AK4117_DIF_24R | AK4117_IPS, /* AK4117_REG_IO */ 184 0xff, /* AK4117_REG_INT0_MASK */ 185 AK4117_MAUTO | AK4117_MAUD | AK4117_MULK | AK4117_MPAR | AK4117_MV, /* AK4117_REG_INT1_MASK */ 186 }; 187 188 err = pdacf_reset(chip, 0); 189 if (err < 0) 190 return err; 191 err = snd_ak4117_create(chip->card, pdacf_ak4117_read, pdacf_ak4117_write, pgm, chip, &chip->ak4117); 192 if (err < 0) 193 return err; 194 195 val = pdacf_reg_read(chip, PDAUDIOCF_REG_TCR); 196 val &= ~(PDAUDIOCF_ELIMAKMBIT|PDAUDIOCF_TESTDATASEL); 197 pdacf_reg_write(chip, PDAUDIOCF_REG_TCR, val); 198 199 /* setup the FPGA to match AK4117 setup */ 200 val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); 201 val &= ~(PDAUDIOCF_CLKDIV0 | PDAUDIOCF_CLKDIV1); /* use 24.576Mhz clock */ 202 val &= ~(PDAUDIOCF_RED_LED_OFF|PDAUDIOCF_BLUE_LED_OFF); 203 val |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1; /* 24-bit data */ 204 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 205 206 /* setup LEDs and IRQ */ 207 val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER); 208 val &= ~(PDAUDIOCF_IRQLVLEN0 | PDAUDIOCF_IRQLVLEN1); 209 val &= ~(PDAUDIOCF_BLUEDUTY0 | PDAUDIOCF_REDDUTY0 | PDAUDIOCF_REDDUTY1); 210 val |= PDAUDIOCF_BLUEDUTY1 | PDAUDIOCF_HALFRATE; 211 val |= PDAUDIOCF_IRQOVREN | PDAUDIOCF_IRQAKMEN; 212 pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val); 213 214 chip->ak4117->change_callback_private = chip; 215 chip->ak4117->change_callback = snd_pdacf_ak4117_change; 216 217 /* update LED status */ 218 snd_pdacf_ak4117_change(chip->ak4117, AK4117_UNLCK, 0); 219 220 return 0; 221} 222 223void snd_pdacf_powerdown(struct snd_pdacf *chip) 224{ 225 u16 val; 226 227 val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); 228 chip->suspend_reg_scr = val; 229 val |= PDAUDIOCF_RED_LED_OFF | PDAUDIOCF_BLUE_LED_OFF; 230 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 231 /* disable interrupts, but use direct write to preserve old register value in chip->regmap */ 232 val = inw(chip->port + PDAUDIOCF_REG_IER); 233 val &= ~(PDAUDIOCF_IRQOVREN|PDAUDIOCF_IRQAKMEN|PDAUDIOCF_IRQLVLEN0|PDAUDIOCF_IRQLVLEN1); 234 outw(val, chip->port + PDAUDIOCF_REG_IER); 235 pdacf_reset(chip, 1); 236} 237 238#ifdef CONFIG_PM 239 240int snd_pdacf_suspend(struct snd_pdacf *chip, pm_message_t state) 241{ 242 u16 val; 243 244 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); 245 snd_pcm_suspend_all(chip->pcm); 246 /* disable interrupts, but use direct write to preserve old register value in chip->regmap */ 247 val = inw(chip->port + PDAUDIOCF_REG_IER); 248 val &= ~(PDAUDIOCF_IRQOVREN|PDAUDIOCF_IRQAKMEN|PDAUDIOCF_IRQLVLEN0|PDAUDIOCF_IRQLVLEN1); 249 outw(val, chip->port + PDAUDIOCF_REG_IER); 250 chip->chip_status |= PDAUDIOCF_STAT_IS_SUSPENDED; /* ignore interrupts from now */ 251 snd_pdacf_powerdown(chip); 252 return 0; 253} 254 255static inline int check_signal(struct snd_pdacf *chip) 256{ 257 return (chip->ak4117->rcs0 & AK4117_UNLCK) == 0; 258} 259 260int snd_pdacf_resume(struct snd_pdacf *chip) 261{ 262 int timeout = 40; 263 264 pdacf_reinit(chip, 1); 265 /* wait for AK4117's PLL */ 266 while (timeout-- > 0 && 267 (snd_ak4117_external_rate(chip->ak4117) <= 0 || !check_signal(chip))) 268 mdelay(1); 269 chip->chip_status &= ~PDAUDIOCF_STAT_IS_SUSPENDED; 270 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); 271 return 0; 272} 273#endif 274