1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for Sound Core PDAudioCF soundcard
5 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
8 #include <linux/delay.h>
9 #include <linux/slab.h>
10 #include <sound/core.h>
11 #include <sound/info.h>
12 #include "pdaudiocf.h"
13 #include <sound/initval.h>
18 static unsigned char pdacf_ak4117_read(void *private_data, unsigned char reg)
20 struct snd_pdacf *chip = private_data;
21 unsigned long timeout;
25 spin_lock_irqsave(&chip->ak4117_lock, flags);
27 while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) {
30 spin_unlock_irqrestore(&chip->ak4117_lock, flags);
31 snd_printk(KERN_ERR "AK4117 ready timeout (read)\n");
35 pdacf_reg_write(chip, PDAUDIOCF_REG_AK_IFR, (u16)reg << 8);
37 while (pdacf_reg_read(chip, PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) {
40 spin_unlock_irqrestore(&chip->ak4117_lock, flags);
41 snd_printk(KERN_ERR "AK4117 read timeout (read2)\n");
45 res = (unsigned char)pdacf_reg_read(chip, PDAUDIOCF_REG_AK_IFR);
46 spin_unlock_irqrestore(&chip->ak4117_lock, flags);
50 static void pdacf_ak4117_write(void *private_data, unsigned char reg, unsigned char val)
52 struct snd_pdacf *chip = private_data;
53 unsigned long timeout;
56 spin_lock_irqsave(&chip->ak4117_lock, flags);
58 while (inw(chip->port + PDAUDIOCF_REG_SCR) & PDAUDIOCF_AK_SBP) {
61 spin_unlock_irqrestore(&chip->ak4117_lock, flags);
62 snd_printk(KERN_ERR "AK4117 ready timeout (write)\n");
66 outw((u16)reg << 8 | val | (1<<13), chip->port + PDAUDIOCF_REG_AK_IFR);
67 spin_unlock_irqrestore(&chip->ak4117_lock, flags);
71 void pdacf_dump(struct snd_pdacf *chip)
73 printk(KERN_DEBUG "PDAUDIOCF DUMP (0x%lx):\n", chip->port);
74 printk(KERN_DEBUG "WPD : 0x%x\n",
75 inw(chip->port + PDAUDIOCF_REG_WDP));
76 printk(KERN_DEBUG "RDP : 0x%x\n",
77 inw(chip->port + PDAUDIOCF_REG_RDP));
78 printk(KERN_DEBUG "TCR : 0x%x\n",
79 inw(chip->port + PDAUDIOCF_REG_TCR));
80 printk(KERN_DEBUG "SCR : 0x%x\n",
81 inw(chip->port + PDAUDIOCF_REG_SCR));
82 printk(KERN_DEBUG "ISR : 0x%x\n",
83 inw(chip->port + PDAUDIOCF_REG_ISR));
84 printk(KERN_DEBUG "IER : 0x%x\n",
85 inw(chip->port + PDAUDIOCF_REG_IER));
86 printk(KERN_DEBUG "AK_IFR : 0x%x\n",
87 inw(chip->port + PDAUDIOCF_REG_AK_IFR));
91 static int pdacf_reset(struct snd_pdacf *chip, int powerdown)
95 val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
97 val &= ~PDAUDIOCF_RECORD; /* for sure */
98 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
100 val |= PDAUDIOCF_RST;
101 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
103 val &= ~PDAUDIOCF_RST;
104 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
107 val &= ~PDAUDIOCF_PDN;
108 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
114 void pdacf_reinit(struct snd_pdacf *chip, int resume)
116 pdacf_reset(chip, 0);
118 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, chip->suspend_reg_scr);
119 snd_ak4117_reinit(chip->ak4117);
120 pdacf_reg_write(chip, PDAUDIOCF_REG_TCR, chip->regmap[PDAUDIOCF_REG_TCR>>1]);
121 pdacf_reg_write(chip, PDAUDIOCF_REG_IER, chip->regmap[PDAUDIOCF_REG_IER>>1]);
124 static void pdacf_proc_read(struct snd_info_entry * entry,
125 struct snd_info_buffer *buffer)
127 struct snd_pdacf *chip = entry->private_data;
130 snd_iprintf(buffer, "PDAudioCF\n\n");
131 tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
132 snd_iprintf(buffer, "FPGA revision : 0x%x\n", PDAUDIOCF_FPGAREV(tmp));
136 static void pdacf_proc_init(struct snd_pdacf *chip)
138 snd_card_ro_proc_new(chip->card, "pdaudiocf", chip, pdacf_proc_read);
141 struct snd_pdacf *snd_pdacf_create(struct snd_card *card)
143 struct snd_pdacf *chip;
145 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
149 mutex_init(&chip->reg_lock);
150 spin_lock_init(&chip->ak4117_lock);
151 card->private_data = chip;
153 pdacf_proc_init(chip);
157 static void snd_pdacf_ak4117_change(struct ak4117 *ak4117, unsigned char c0, unsigned char c1)
159 struct snd_pdacf *chip = ak4117->change_callback_private;
162 if (!(c0 & AK4117_UNLCK))
164 mutex_lock(&chip->reg_lock);
165 val = chip->regmap[PDAUDIOCF_REG_SCR>>1];
166 if (ak4117->rcs0 & AK4117_UNLCK)
167 val |= PDAUDIOCF_BLUE_LED_OFF;
169 val &= ~PDAUDIOCF_BLUE_LED_OFF;
170 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
171 mutex_unlock(&chip->reg_lock);
174 int snd_pdacf_ak4117_create(struct snd_pdacf *chip)
178 /* design note: if we unmask PLL unlock, parity, valid, audio or auto bit interrupts */
179 /* from AK4117 then INT1 pin from AK4117 will be high all time, because PCMCIA interrupts are */
180 /* egde based and FPGA does logical OR for all interrupt sources, we cannot use these */
181 /* high-rate sources */
182 static const unsigned char pgm[5] = {
183 AK4117_XTL_24_576M | AK4117_EXCT, /* AK4117_REG_PWRDN */
184 AK4117_CM_PLL_XTAL | AK4117_PKCS_128fs | AK4117_XCKS_128fs, /* AK4117_REQ_CLOCK */
185 AK4117_EFH_1024LRCLK | AK4117_DIF_24R | AK4117_IPS, /* AK4117_REG_IO */
186 0xff, /* AK4117_REG_INT0_MASK */
187 AK4117_MAUTO | AK4117_MAUD | AK4117_MULK | AK4117_MPAR | AK4117_MV, /* AK4117_REG_INT1_MASK */
190 err = pdacf_reset(chip, 0);
193 err = snd_ak4117_create(chip->card, pdacf_ak4117_read, pdacf_ak4117_write, pgm, chip, &chip->ak4117);
197 val = pdacf_reg_read(chip, PDAUDIOCF_REG_TCR);
198 #if 1 /* normal operation */
199 val &= ~(PDAUDIOCF_ELIMAKMBIT|PDAUDIOCF_TESTDATASEL);
201 val |= PDAUDIOCF_ELIMAKMBIT;
202 val &= ~PDAUDIOCF_TESTDATASEL;
204 pdacf_reg_write(chip, PDAUDIOCF_REG_TCR, val);
206 /* setup the FPGA to match AK4117 setup */
207 val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
208 val &= ~(PDAUDIOCF_CLKDIV0 | PDAUDIOCF_CLKDIV1); /* use 24.576Mhz clock */
209 val &= ~(PDAUDIOCF_RED_LED_OFF|PDAUDIOCF_BLUE_LED_OFF);
210 val |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1; /* 24-bit data */
211 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
213 /* setup LEDs and IRQ */
214 val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
215 val &= ~(PDAUDIOCF_IRQLVLEN0 | PDAUDIOCF_IRQLVLEN1);
216 val &= ~(PDAUDIOCF_BLUEDUTY0 | PDAUDIOCF_REDDUTY0 | PDAUDIOCF_REDDUTY1);
217 val |= PDAUDIOCF_BLUEDUTY1 | PDAUDIOCF_HALFRATE;
218 val |= PDAUDIOCF_IRQOVREN | PDAUDIOCF_IRQAKMEN;
219 pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
221 chip->ak4117->change_callback_private = chip;
222 chip->ak4117->change_callback = snd_pdacf_ak4117_change;
224 /* update LED status */
225 snd_pdacf_ak4117_change(chip->ak4117, AK4117_UNLCK, 0);
230 void snd_pdacf_powerdown(struct snd_pdacf *chip)
234 val = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
235 chip->suspend_reg_scr = val;
236 val |= PDAUDIOCF_RED_LED_OFF | PDAUDIOCF_BLUE_LED_OFF;
237 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
238 /* disable interrupts, but use direct write to preserve old register value in chip->regmap */
239 val = inw(chip->port + PDAUDIOCF_REG_IER);
240 val &= ~(PDAUDIOCF_IRQOVREN|PDAUDIOCF_IRQAKMEN|PDAUDIOCF_IRQLVLEN0|PDAUDIOCF_IRQLVLEN1);
241 outw(val, chip->port + PDAUDIOCF_REG_IER);
242 pdacf_reset(chip, 1);
247 int snd_pdacf_suspend(struct snd_pdacf *chip)
251 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
252 /* disable interrupts, but use direct write to preserve old register value in chip->regmap */
253 val = inw(chip->port + PDAUDIOCF_REG_IER);
254 val &= ~(PDAUDIOCF_IRQOVREN|PDAUDIOCF_IRQAKMEN|PDAUDIOCF_IRQLVLEN0|PDAUDIOCF_IRQLVLEN1);
255 outw(val, chip->port + PDAUDIOCF_REG_IER);
256 chip->chip_status |= PDAUDIOCF_STAT_IS_SUSPENDED; /* ignore interrupts from now */
257 snd_pdacf_powerdown(chip);
261 static inline int check_signal(struct snd_pdacf *chip)
263 return (chip->ak4117->rcs0 & AK4117_UNLCK) == 0;
266 int snd_pdacf_resume(struct snd_pdacf *chip)
270 pdacf_reinit(chip, 1);
271 /* wait for AK4117's PLL */
272 while (timeout-- > 0 &&
273 (snd_ak4117_external_rate(chip->ak4117) <= 0 || !check_signal(chip)))
275 chip->chip_status &= ~PDAUDIOCF_STAT_IS_SUSPENDED;
276 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);