1 // SPDX-License-Identifier: GPL-2.0-only
3  * C-Media CMI8788 driver - helper functions
16 u8 oxygen_read8(struct oxygen *chip, unsigned int reg)  in oxygen_read8()  argument
18 	return inb(chip->addr + reg);  in oxygen_read8()
22 u16 oxygen_read16(struct oxygen *chip, unsigned int reg)  in oxygen_read16()  argument
24 	return inw(chip->addr + reg);  in oxygen_read16()
28 u32 oxygen_read32(struct oxygen *chip, unsigned int reg)  in oxygen_read32()  argument
30 	return inl(chip->addr + reg);  in oxygen_read32()
34 void oxygen_write8(struct oxygen *chip, unsigned int reg, u8 value)  in oxygen_write8()  argument
36 	outb(value, chip->addr + reg);  in oxygen_write8()
37 	chip->saved_registers._8[reg] = value;  in oxygen_write8()
41 void oxygen_write16(struct oxygen *chip, unsigned int reg, u16 value)  in oxygen_write16()  argument
43 	outw(value, chip->addr + reg);  in oxygen_write16()
44 	chip->saved_registers._16[reg / 2] = cpu_to_le16(value);  in oxygen_write16()
48 void oxygen_write32(struct oxygen *chip, unsigned int reg, u32 value)  in oxygen_write32()  argument
50 	outl(value, chip->addr + reg);  in oxygen_write32()
51 	chip->saved_registers._32[reg / 4] = cpu_to_le32(value);  in oxygen_write32()
55 void oxygen_write8_masked(struct oxygen *chip, unsigned int reg,  in oxygen_write8_masked()  argument
58 	u8 tmp = inb(chip->addr + reg);  in oxygen_write8_masked()
61 	outb(tmp, chip->addr + reg);  in oxygen_write8_masked()
62 	chip->saved_registers._8[reg] = tmp;  in oxygen_write8_masked()
66 void oxygen_write16_masked(struct oxygen *chip, unsigned int reg,  in oxygen_write16_masked()  argument
69 	u16 tmp = inw(chip->addr + reg);  in oxygen_write16_masked()
72 	outw(tmp, chip->addr + reg);  in oxygen_write16_masked()
73 	chip->saved_registers._16[reg / 2] = cpu_to_le16(tmp);  in oxygen_write16_masked()
77 void oxygen_write32_masked(struct oxygen *chip, unsigned int reg,  in oxygen_write32_masked()  argument
80 	u32 tmp = inl(chip->addr + reg);  in oxygen_write32_masked()
83 	outl(tmp, chip->addr + reg);  in oxygen_write32_masked()
84 	chip->saved_registers._32[reg / 4] = cpu_to_le32(tmp);  in oxygen_write32_masked()
96 	wait_event_timeout(chip->ac97_waitqueue,  in oxygen_ac97_wait()
105 	return status & mask ? 0 : -EIO;  in oxygen_ac97_wait()
114  * were made by C-Media ...
121 	u32 reg;  in oxygen_write_ac97()  local
123 	reg = data;  in oxygen_write_ac97()
124 	reg |= index << OXYGEN_AC97_REG_ADDR_SHIFT;  in oxygen_write_ac97()
125 	reg |= OXYGEN_AC97_REG_DIR_WRITE;  in oxygen_write_ac97()
126 	reg |= codec << OXYGEN_AC97_REG_CODEC_SHIFT;  in oxygen_write_ac97()
128 	for (count = 5; count > 0; --count) {  in oxygen_write_ac97()
130 		oxygen_write32(chip, OXYGEN_AC97_REGS, reg);  in oxygen_write_ac97()
134 			chip->saved_ac97_registers[codec][index / 2] = data;  in oxygen_write_ac97()
138 	dev_err(chip->card->dev, "AC'97 write timeout\n");  in oxygen_write_ac97()
147 	u32 reg;  in oxygen_read_ac97()  local
149 	reg = index << OXYGEN_AC97_REG_ADDR_SHIFT;  in oxygen_read_ac97()
150 	reg |= OXYGEN_AC97_REG_DIR_READ;  in oxygen_read_ac97()
151 	reg |= codec << OXYGEN_AC97_REG_CODEC_SHIFT;  in oxygen_read_ac97()
152 	for (count = 5; count > 0; --count) {  in oxygen_read_ac97()
154 		oxygen_write32(chip, OXYGEN_AC97_REGS, reg);  in oxygen_read_ac97()
167 			reg ^= 0xffff;  in oxygen_read_ac97()
170 	dev_err(chip->card->dev, "AC'97 read timeout on codec %u\n", codec);  in oxygen_read_ac97()
193 	for (count = 50; count > 0; count--) {  in oxygen_wait_spi()
199 	dev_err(chip->card->dev, "oxygen: SPI wait timeout\n");  in oxygen_wait_spi()
200 	return -EIO;  in oxygen_wait_spi()
279 	dev_err(chip->card->dev, "EEPROM write timeout\n");  in oxygen_write_eeprom()