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 <sound/core.h> 23 #include <sound/info.h> 24 #include "pdaudiocf.h" 25 #include <sound/initval.h> 26 27 /* 28 * 29 */ 30 static unsigned char pdacf_ak4117_read(void *private_data, unsigned char reg) 31 { 32 struct snd_pdacf *chip = private_data; 33 unsigned long timeout; 34 unsigned long flags; 35 unsigned char res; 36 37 spin_lock_irqsave(&chip->ak4117_lock, flags); 38 timeout = 1000; 39 while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) { 40 udelay(5); 41 if (--timeout == 0) { 42 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 43 snd_printk(KERN_ERR "AK4117 ready timeout (read)\n"); 44 return 0; 45 } 46 } 47 pdacf_reg_write(chip, PDAUDIOCF_REG_AK_IFR, (u16)reg << 8); 48 timeout = 1000; 49 while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) { 50 udelay(5); 51 if (--timeout == 0) { 52 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 53 snd_printk(KERN_ERR "AK4117 read timeout (read2)\n"); 54 return 0; 55 } 56 } 57 res = (unsigned char)pdacf_reg_read(chip, PDAUDIOCF_REG_AK_IFR); 58 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 59 return res; 60 } 61 62 static void pdacf_ak4117_write(void *private_data, unsigned char reg, unsigned char val) 63 { 64 struct snd_pdacf *chip = private_data; 65 unsigned long timeout; 66 unsigned long flags; 67 68 spin_lock_irqsave(&chip->ak4117_lock, flags); 69 timeout = 1000; 70 while (inw(chip->port + PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) { 71 udelay(5); 72 if (--timeout == 0) { 73 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 74 snd_printk(KERN_ERR "AK4117 ready timeout (write)\n"); 75 return; 76 } 77 } 78 outw((u16)reg << 8 | val | (1<<13), chip->port + PDAUDIOCF_REG_AK_IFR); 79 spin_unlock_irqrestore(&chip->ak4117_lock, flags); 80 } 81 82 #if 0 83 void pdacf_dump(struct snd_pdacf *chip) 84 { 85 printk(KERN_DEBUG "PDAUDIOCF DUMP (0x%lx):\n", chip->port); 86 printk(KERN_DEBUG "WPD : 0x%x\n", 87 inw(chip->port + PDAUDIOCF_REG_WDP)); 88 printk(KERN_DEBUG "RDP : 0x%x\n", 89 inw(chip->port + PDAUDIOCF_REG_RDP)); 90 printk(KERN_DEBUG "TCR : 0x%x\n", 91 inw(chip->port + PDAUDIOCF_REG_TCR)); 92 printk(KERN_DEBUG "SCR : 0x%x\n", 93 inw(chip->port + PDAUDIOCF_REG_SCR)); 94 printk(KERN_DEBUG "ISR : 0x%x\n", 95 inw(chip->port + PDAUDIOCF_REG_ISR)); 96 printk(KERN_DEBUG "IER : 0x%x\n", 97 inw(chip->port + PDAUDIOCF_REG_IER)); 98 printk(KERN_DEBUG "AK_IFR : 0x%x\n", 99 inw(chip->port + PDAUDIOCF_REG_AK_IFR)); 100 } 101 #endif 102 103 static int pdacf_reset(struct snd_pdacf *chip, int powerdown) 104 { 105 u16 val; 106 107 val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); 108 val |= PDAUDIOCF_PDN; 109 val &= ~PDAUDIOCF_RECORD; /* for sure */ 110 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 111 udelay(5); 112 val |= PDAUDIOCF_RST; 113 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 114 udelay(200); 115 val &= ~PDAUDIOCF_RST; 116 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 117 udelay(5); 118 if (!powerdown) { 119 val &= ~PDAUDIOCF_PDN; 120 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 121 udelay(200); 122 } 123 return 0; 124 } 125 126 void pdacf_reinit(struct snd_pdacf *chip, int resume) 127 { 128 pdacf_reset(chip, 0); 129 if (resume) 130 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, chip->suspend_reg_scr); 131 snd_ak4117_reinit(chip->ak4117); 132 pdacf_reg_write(chip, PDAUDIOCF_REG_TCR, chip->regmap[PDAUDIOCF_REG_TCR>>1]); 133 pdacf_reg_write(chip, PDAUDIOCF_REG_IER, chip->regmap[PDAUDIOCF_REG_IER>>1]); 134 } 135 136 static void pdacf_proc_read(struct snd_info_entry * entry, 137 struct snd_info_buffer *buffer) 138 { 139 struct snd_pdacf *chip = entry->private_data; 140 u16 tmp; 141 142 snd_iprintf(buffer, "PDAudioCF\n\n"); 143 tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); 144 snd_iprintf(buffer, "FPGA revision : 0x%x\n", PDAUDIOCF_FPGAREV(tmp)); 145 146 } 147 148 static void pdacf_proc_init(struct snd_pdacf *chip) 149 { 150 struct snd_info_entry *entry; 151 152 if (! snd_card_proc_new(chip->card, "pdaudiocf", &entry)) 153 snd_info_set_text_ops(entry, chip, pdacf_proc_read); 154 } 155 156 struct snd_pdacf *snd_pdacf_create(struct snd_card *card) 157 { 158 struct snd_pdacf *chip; 159 160 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 161 if (chip == NULL) 162 return NULL; 163 chip->card = card; 164 spin_lock_init(&chip->reg_lock); 165 spin_lock_init(&chip->ak4117_lock); 166 tasklet_init(&chip->tq, pdacf_tasklet, (unsigned long)chip); 167 card->private_data = chip; 168 169 pdacf_proc_init(chip); 170 return chip; 171 } 172 173 static void snd_pdacf_ak4117_change(struct ak4117 *ak4117, unsigned char c0, unsigned char c1) 174 { 175 struct snd_pdacf *chip = ak4117->change_callback_private; 176 unsigned long flags; 177 u16 val; 178 179 if (!(c0 & AK4117_UNLCK)) 180 return; 181 spin_lock_irqsave(&chip->reg_lock, flags); 182 val = chip->regmap[PDAUDIOCF_REG_SCR>>1]; 183 if (ak4117->rcs0 & AK4117_UNLCK) 184 val |= PDAUDIOCF_BLUE_LED_OFF; 185 else 186 val &= ~PDAUDIOCF_BLUE_LED_OFF; 187 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 188 spin_unlock_irqrestore(&chip->reg_lock, flags); 189 } 190 191 int snd_pdacf_ak4117_create(struct snd_pdacf *chip) 192 { 193 int err; 194 u16 val; 195 /* design note: if we unmask PLL unlock, parity, valid, audio or auto bit interrupts */ 196 /* from AK4117 then INT1 pin from AK4117 will be high all time, because PCMCIA interrupts are */ 197 /* egde based and FPGA does logical OR for all interrupt sources, we cannot use these */ 198 /* high-rate sources */ 199 static unsigned char pgm[5] = { 200 AK4117_XTL_24_576M | AK4117_EXCT, /* AK4117_REG_PWRDN */ 201 AK4117_CM_PLL_XTAL | AK4117_PKCS_128fs | AK4117_XCKS_128fs, /* AK4117_REQ_CLOCK */ 202 AK4117_EFH_1024LRCLK | AK4117_DIF_24R | AK4117_IPS, /* AK4117_REG_IO */ 203 0xff, /* AK4117_REG_INT0_MASK */ 204 AK4117_MAUTO | AK4117_MAUD | AK4117_MULK | AK4117_MPAR | AK4117_MV, /* AK4117_REG_INT1_MASK */ 205 }; 206 207 err = pdacf_reset(chip, 0); 208 if (err < 0) 209 return err; 210 err = snd_ak4117_create(chip->card, pdacf_ak4117_read, pdacf_ak4117_write, pgm, chip, &chip->ak4117); 211 if (err < 0) 212 return err; 213 214 val = pdacf_reg_read(chip, PDAUDIOCF_REG_TCR); 215 #if 1 /* normal operation */ 216 val &= ~(PDAUDIOCF_ELIMAKMBIT|PDAUDIOCF_TESTDATASEL); 217 #else /* debug */ 218 val |= PDAUDIOCF_ELIMAKMBIT; 219 val &= ~PDAUDIOCF_TESTDATASEL; 220 #endif 221 pdacf_reg_write(chip, PDAUDIOCF_REG_TCR, val); 222 223 /* setup the FPGA to match AK4117 setup */ 224 val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); 225 val &= ~(PDAUDIOCF_CLKDIV0 | PDAUDIOCF_CLKDIV1); /* use 24.576Mhz clock */ 226 val &= ~(PDAUDIOCF_RED_LED_OFF|PDAUDIOCF_BLUE_LED_OFF); 227 val |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1; /* 24-bit data */ 228 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 229 230 /* setup LEDs and IRQ */ 231 val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER); 232 val &= ~(PDAUDIOCF_IRQLVLEN0 | PDAUDIOCF_IRQLVLEN1); 233 val &= ~(PDAUDIOCF_BLUEDUTY0 | PDAUDIOCF_REDDUTY0 | PDAUDIOCF_REDDUTY1); 234 val |= PDAUDIOCF_BLUEDUTY1 | PDAUDIOCF_HALFRATE; 235 val |= PDAUDIOCF_IRQOVREN | PDAUDIOCF_IRQAKMEN; 236 pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val); 237 238 chip->ak4117->change_callback_private = chip; 239 chip->ak4117->change_callback = snd_pdacf_ak4117_change; 240 241 /* update LED status */ 242 snd_pdacf_ak4117_change(chip->ak4117, AK4117_UNLCK, 0); 243 244 return 0; 245 } 246 247 void snd_pdacf_powerdown(struct snd_pdacf *chip) 248 { 249 u16 val; 250 251 val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); 252 chip->suspend_reg_scr = val; 253 val |= PDAUDIOCF_RED_LED_OFF | PDAUDIOCF_BLUE_LED_OFF; 254 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); 255 /* disable interrupts, but use direct write to preserve old register value in chip->regmap */ 256 val = inw(chip->port + PDAUDIOCF_REG_IER); 257 val &= ~(PDAUDIOCF_IRQOVREN|PDAUDIOCF_IRQAKMEN|PDAUDIOCF_IRQLVLEN0|PDAUDIOCF_IRQLVLEN1); 258 outw(val, chip->port + PDAUDIOCF_REG_IER); 259 pdacf_reset(chip, 1); 260 } 261 262 #ifdef CONFIG_PM 263 264 int snd_pdacf_suspend(struct snd_pdacf *chip, pm_message_t state) 265 { 266 u16 val; 267 268 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); 269 snd_pcm_suspend_all(chip->pcm); 270 /* disable interrupts, but use direct write to preserve old register value in chip->regmap */ 271 val = inw(chip->port + PDAUDIOCF_REG_IER); 272 val &= ~(PDAUDIOCF_IRQOVREN|PDAUDIOCF_IRQAKMEN|PDAUDIOCF_IRQLVLEN0|PDAUDIOCF_IRQLVLEN1); 273 outw(val, chip->port + PDAUDIOCF_REG_IER); 274 chip->chip_status |= PDAUDIOCF_STAT_IS_SUSPENDED; /* ignore interrupts from now */ 275 snd_pdacf_powerdown(chip); 276 return 0; 277 } 278 279 static inline int check_signal(struct snd_pdacf *chip) 280 { 281 return (chip->ak4117->rcs0 & AK4117_UNLCK) == 0; 282 } 283 284 int snd_pdacf_resume(struct snd_pdacf *chip) 285 { 286 int timeout = 40; 287 288 pdacf_reinit(chip, 1); 289 /* wait for AK4117's PLL */ 290 while (timeout-- > 0 && 291 (snd_ak4117_external_rate(chip->ak4117) <= 0 || !check_signal(chip))) 292 mdelay(1); 293 chip->chip_status &= ~PDAUDIOCF_STAT_IS_SUSPENDED; 294 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); 295 return 0; 296 } 297 #endif 298