diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/pci/oxygen/oxygen_io.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/pci/oxygen/oxygen_io.c | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/ANDROID_3.4.5/sound/pci/oxygen/oxygen_io.c b/ANDROID_3.4.5/sound/pci/oxygen/oxygen_io.c deleted file mode 100644 index 521eae45..00000000 --- a/ANDROID_3.4.5/sound/pci/oxygen/oxygen_io.c +++ /dev/null @@ -1,279 +0,0 @@ -/* - * C-Media CMI8788 driver - helper functions - * - * Copyright (c) Clemens Ladisch <clemens@ladisch.de> - * - * - * This driver is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2. - * - * This driver is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this driver; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/export.h> -#include <sound/core.h> -#include <sound/mpu401.h> -#include <asm/io.h> -#include "oxygen.h" - -u8 oxygen_read8(struct oxygen *chip, unsigned int reg) -{ - return inb(chip->addr + reg); -} -EXPORT_SYMBOL(oxygen_read8); - -u16 oxygen_read16(struct oxygen *chip, unsigned int reg) -{ - return inw(chip->addr + reg); -} -EXPORT_SYMBOL(oxygen_read16); - -u32 oxygen_read32(struct oxygen *chip, unsigned int reg) -{ - return inl(chip->addr + reg); -} -EXPORT_SYMBOL(oxygen_read32); - -void oxygen_write8(struct oxygen *chip, unsigned int reg, u8 value) -{ - outb(value, chip->addr + reg); - chip->saved_registers._8[reg] = value; -} -EXPORT_SYMBOL(oxygen_write8); - -void oxygen_write16(struct oxygen *chip, unsigned int reg, u16 value) -{ - outw(value, chip->addr + reg); - chip->saved_registers._16[reg / 2] = cpu_to_le16(value); -} -EXPORT_SYMBOL(oxygen_write16); - -void oxygen_write32(struct oxygen *chip, unsigned int reg, u32 value) -{ - outl(value, chip->addr + reg); - chip->saved_registers._32[reg / 4] = cpu_to_le32(value); -} -EXPORT_SYMBOL(oxygen_write32); - -void oxygen_write8_masked(struct oxygen *chip, unsigned int reg, - u8 value, u8 mask) -{ - u8 tmp = inb(chip->addr + reg); - tmp &= ~mask; - tmp |= value & mask; - outb(tmp, chip->addr + reg); - chip->saved_registers._8[reg] = tmp; -} -EXPORT_SYMBOL(oxygen_write8_masked); - -void oxygen_write16_masked(struct oxygen *chip, unsigned int reg, - u16 value, u16 mask) -{ - u16 tmp = inw(chip->addr + reg); - tmp &= ~mask; - tmp |= value & mask; - outw(tmp, chip->addr + reg); - chip->saved_registers._16[reg / 2] = cpu_to_le16(tmp); -} -EXPORT_SYMBOL(oxygen_write16_masked); - -void oxygen_write32_masked(struct oxygen *chip, unsigned int reg, - u32 value, u32 mask) -{ - u32 tmp = inl(chip->addr + reg); - tmp &= ~mask; - tmp |= value & mask; - outl(tmp, chip->addr + reg); - chip->saved_registers._32[reg / 4] = cpu_to_le32(tmp); -} -EXPORT_SYMBOL(oxygen_write32_masked); - -static int oxygen_ac97_wait(struct oxygen *chip, unsigned int mask) -{ - u8 status = 0; - - /* - * Reading the status register also clears the bits, so we have to save - * the read bits in status. - */ - wait_event_timeout(chip->ac97_waitqueue, - ({ status |= oxygen_read8(chip, OXYGEN_AC97_INTERRUPT_STATUS); - status & mask; }), - msecs_to_jiffies(1) + 1); - /* - * Check even after a timeout because this function should not require - * the AC'97 interrupt to be enabled. - */ - status |= oxygen_read8(chip, OXYGEN_AC97_INTERRUPT_STATUS); - return status & mask ? 0 : -EIO; -} - -/* - * About 10% of AC'97 register reads or writes fail to complete, but even those - * where the controller indicates completion aren't guaranteed to have actually - * happened. - * - * It's hard to assign blame to either the controller or the codec because both - * were made by C-Media ... - */ - -void oxygen_write_ac97(struct oxygen *chip, unsigned int codec, - unsigned int index, u16 data) -{ - unsigned int count, succeeded; - u32 reg; - - reg = data; - reg |= index << OXYGEN_AC97_REG_ADDR_SHIFT; - reg |= OXYGEN_AC97_REG_DIR_WRITE; - reg |= codec << OXYGEN_AC97_REG_CODEC_SHIFT; - succeeded = 0; - for (count = 5; count > 0; --count) { - udelay(5); - oxygen_write32(chip, OXYGEN_AC97_REGS, reg); - /* require two "completed" writes, just to be sure */ - if (oxygen_ac97_wait(chip, OXYGEN_AC97_INT_WRITE_DONE) >= 0 && - ++succeeded >= 2) { - chip->saved_ac97_registers[codec][index / 2] = data; - return; - } - } - snd_printk(KERN_ERR "AC'97 write timeout\n"); -} -EXPORT_SYMBOL(oxygen_write_ac97); - -u16 oxygen_read_ac97(struct oxygen *chip, unsigned int codec, - unsigned int index) -{ - unsigned int count; - unsigned int last_read = UINT_MAX; - u32 reg; - - reg = index << OXYGEN_AC97_REG_ADDR_SHIFT; - reg |= OXYGEN_AC97_REG_DIR_READ; - reg |= codec << OXYGEN_AC97_REG_CODEC_SHIFT; - for (count = 5; count > 0; --count) { - udelay(5); - oxygen_write32(chip, OXYGEN_AC97_REGS, reg); - udelay(10); - if (oxygen_ac97_wait(chip, OXYGEN_AC97_INT_READ_DONE) >= 0) { - u16 value = oxygen_read16(chip, OXYGEN_AC97_REGS); - /* we require two consecutive reads of the same value */ - if (value == last_read) - return value; - last_read = value; - /* - * Invert the register value bits to make sure that two - * consecutive unsuccessful reads do not return the same - * value. - */ - reg ^= 0xffff; - } - } - snd_printk(KERN_ERR "AC'97 read timeout on codec %u\n", codec); - return 0; -} -EXPORT_SYMBOL(oxygen_read_ac97); - -void oxygen_write_ac97_masked(struct oxygen *chip, unsigned int codec, - unsigned int index, u16 data, u16 mask) -{ - u16 value = oxygen_read_ac97(chip, codec, index); - value &= ~mask; - value |= data & mask; - oxygen_write_ac97(chip, codec, index, value); -} -EXPORT_SYMBOL(oxygen_write_ac97_masked); - -void oxygen_write_spi(struct oxygen *chip, u8 control, unsigned int data) -{ - unsigned int count; - - /* should not need more than 30.72 us (24 * 1.28 us) */ - count = 10; - while ((oxygen_read8(chip, OXYGEN_SPI_CONTROL) & OXYGEN_SPI_BUSY) - && count > 0) { - udelay(4); - --count; - } - - oxygen_write8(chip, OXYGEN_SPI_DATA1, data); - oxygen_write8(chip, OXYGEN_SPI_DATA2, data >> 8); - if (control & OXYGEN_SPI_DATA_LENGTH_3) - oxygen_write8(chip, OXYGEN_SPI_DATA3, data >> 16); - oxygen_write8(chip, OXYGEN_SPI_CONTROL, control); -} -EXPORT_SYMBOL(oxygen_write_spi); - -void oxygen_write_i2c(struct oxygen *chip, u8 device, u8 map, u8 data) -{ - /* should not need more than about 300 us */ - msleep(1); - - oxygen_write8(chip, OXYGEN_2WIRE_MAP, map); - oxygen_write8(chip, OXYGEN_2WIRE_DATA, data); - oxygen_write8(chip, OXYGEN_2WIRE_CONTROL, - device | OXYGEN_2WIRE_DIR_WRITE); -} -EXPORT_SYMBOL(oxygen_write_i2c); - -static void _write_uart(struct oxygen *chip, unsigned int port, u8 data) -{ - if (oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_TX_FULL) - msleep(1); - oxygen_write8(chip, OXYGEN_MPU401 + port, data); -} - -void oxygen_reset_uart(struct oxygen *chip) -{ - _write_uart(chip, 1, MPU401_RESET); - msleep(1); /* wait for ACK */ - _write_uart(chip, 1, MPU401_ENTER_UART); -} -EXPORT_SYMBOL(oxygen_reset_uart); - -void oxygen_write_uart(struct oxygen *chip, u8 data) -{ - _write_uart(chip, 0, data); -} -EXPORT_SYMBOL(oxygen_write_uart); - -u16 oxygen_read_eeprom(struct oxygen *chip, unsigned int index) -{ - unsigned int timeout; - - oxygen_write8(chip, OXYGEN_EEPROM_CONTROL, - index | OXYGEN_EEPROM_DIR_READ); - for (timeout = 0; timeout < 100; ++timeout) { - udelay(1); - if (!(oxygen_read8(chip, OXYGEN_EEPROM_STATUS) - & OXYGEN_EEPROM_BUSY)) - break; - } - return oxygen_read16(chip, OXYGEN_EEPROM_DATA); -} - -void oxygen_write_eeprom(struct oxygen *chip, unsigned int index, u16 value) -{ - unsigned int timeout; - - oxygen_write16(chip, OXYGEN_EEPROM_DATA, value); - oxygen_write8(chip, OXYGEN_EEPROM_CONTROL, - index | OXYGEN_EEPROM_DIR_WRITE); - for (timeout = 0; timeout < 10; ++timeout) { - msleep(1); - if (!(oxygen_read8(chip, OXYGEN_EEPROM_STATUS) - & OXYGEN_EEPROM_BUSY)) - return; - } - snd_printk(KERN_ERR "EEPROM write timeout\n"); -} |