diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/sound/max98095.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/sound/max98095.c | 591 |
1 files changed, 0 insertions, 591 deletions
diff --git a/qemu/roms/u-boot/drivers/sound/max98095.c b/qemu/roms/u-boot/drivers/sound/max98095.c deleted file mode 100644 index febf4195b..000000000 --- a/qemu/roms/u-boot/drivers/sound/max98095.c +++ /dev/null @@ -1,591 +0,0 @@ -/* - * max98095.c -- MAX98095 ALSA SoC Audio driver - * - * Copyright 2011 Maxim Integrated Products - * - * Modified for uboot by R. Chandrasekar (rcsekar@samsung.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <asm/arch/clk.h> -#include <asm/arch/cpu.h> -#include <asm/arch/power.h> -#include <asm/gpio.h> -#include <asm/io.h> -#include <common.h> -#include <div64.h> -#include <fdtdec.h> -#include <i2c.h> -#include <sound.h> -#include "i2s.h" -#include "max98095.h" - -enum max98095_type { - MAX98095, -}; - -struct max98095_priv { - enum max98095_type devtype; - unsigned int sysclk; - unsigned int rate; - unsigned int fmt; -}; - -static struct sound_codec_info g_codec_info; -struct max98095_priv g_max98095_info; -unsigned int g_max98095_i2c_dev_addr; - -/* Index 0 is reserved. */ -int rate_table[] = {0, 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, - 88200, 96000}; - -/* - * Writes value to a device register through i2c - * - * @param reg reg number to be write - * @param data data to be writen to the above registor - * - * @return int value 1 for change, 0 for no change or negative error code. - */ -static int max98095_i2c_write(unsigned int reg, unsigned char data) -{ - debug("%s: Write Addr : 0x%02X, Data : 0x%02X\n", - __func__, reg, data); - return i2c_write(g_max98095_i2c_dev_addr, reg, 1, &data, 1); -} - -/* - * Read a value from a device register through i2c - * - * @param reg reg number to be read - * @param data address of read data to be stored - * - * @return int value 0 for success, -1 in case of error. - */ -static unsigned int max98095_i2c_read(unsigned int reg, unsigned char *data) -{ - int ret; - - ret = i2c_read(g_max98095_i2c_dev_addr, reg, 1, data, 1); - if (ret != 0) { - debug("%s: Error while reading register %#04x\n", - __func__, reg); - return -1; - } - - return 0; -} - -/* - * update device register bits through i2c - * - * @param reg codec register - * @param mask register mask - * @param value new value - * - * @return int value 0 for success, non-zero error code. - */ -static int max98095_update_bits(unsigned int reg, unsigned char mask, - unsigned char value) -{ - int change, ret = 0; - unsigned char old, new; - - if (max98095_i2c_read(reg, &old) != 0) - return -1; - new = (old & ~mask) | (value & mask); - change = (old != new) ? 1 : 0; - if (change) - ret = max98095_i2c_write(reg, new); - if (ret < 0) - return ret; - - return change; -} - -/* - * codec mclk clock divider coefficients based on sampling rate - * - * @param rate sampling rate - * @param value address of indexvalue to be stored - * - * @return 0 for success or negative error code. - */ -static int rate_value(int rate, u8 *value) -{ - int i; - - for (i = 1; i < ARRAY_SIZE(rate_table); i++) { - if (rate_table[i] >= rate) { - *value = i; - return 0; - } - } - *value = 1; - - return -1; -} - -/* - * Sets hw params for max98095 - * - * @param max98095 max98095 information pointer - * @param rate Sampling rate - * @param bits_per_sample Bits per sample - * - * @return -1 for error and 0 Success. - */ -static int max98095_hw_params(struct max98095_priv *max98095, - enum en_max_audio_interface aif_id, - unsigned int rate, unsigned int bits_per_sample) -{ - u8 regval; - int error; - unsigned short M98095_DAI_CLKMODE; - unsigned short M98095_DAI_FORMAT; - unsigned short M98095_DAI_FILTERS; - - if (aif_id == AIF1) { - M98095_DAI_CLKMODE = M98095_027_DAI1_CLKMODE; - M98095_DAI_FORMAT = M98095_02A_DAI1_FORMAT; - M98095_DAI_FILTERS = M98095_02E_DAI1_FILTERS; - } else { - M98095_DAI_CLKMODE = M98095_031_DAI2_CLKMODE; - M98095_DAI_FORMAT = M98095_034_DAI2_FORMAT; - M98095_DAI_FILTERS = M98095_038_DAI2_FILTERS; - } - - switch (bits_per_sample) { - case 16: - error = max98095_update_bits(M98095_DAI_FORMAT, - M98095_DAI_WS, 0); - break; - case 24: - error = max98095_update_bits(M98095_DAI_FORMAT, - M98095_DAI_WS, M98095_DAI_WS); - break; - default: - debug("%s: Illegal bits per sample %d.\n", - __func__, bits_per_sample); - return -1; - } - - if (rate_value(rate, ®val)) { - debug("%s: Failed to set sample rate to %d.\n", - __func__, rate); - return -1; - } - max98095->rate = rate; - - error |= max98095_update_bits(M98095_DAI_CLKMODE, - M98095_CLKMODE_MASK, regval); - - /* Update sample rate mode */ - if (rate < 50000) - error |= max98095_update_bits(M98095_DAI_FILTERS, - M98095_DAI_DHF, 0); - else - error |= max98095_update_bits(M98095_DAI_FILTERS, - M98095_DAI_DHF, M98095_DAI_DHF); - - if (error < 0) { - debug("%s: Error setting hardware params.\n", __func__); - return -1; - } - - return 0; -} - -/* - * Configures Audio interface system clock for the given frequency - * - * @param max98095 max98095 information - * @param freq Sampling frequency in Hz - * - * @return -1 for error and 0 success. - */ -static int max98095_set_sysclk(struct max98095_priv *max98095, - unsigned int freq) -{ - int error = 0; - - /* Requested clock frequency is already setup */ - if (freq == max98095->sysclk) - return 0; - - /* Setup clocks for slave mode, and using the PLL - * PSCLK = 0x01 (when master clk is 10MHz to 20MHz) - * 0x02 (when master clk is 20MHz to 40MHz).. - * 0x03 (when master clk is 40MHz to 60MHz).. - */ - if ((freq >= 10000000) && (freq < 20000000)) { - error = max98095_i2c_write(M98095_026_SYS_CLK, 0x10); - } else if ((freq >= 20000000) && (freq < 40000000)) { - error = max98095_i2c_write(M98095_026_SYS_CLK, 0x20); - } else if ((freq >= 40000000) && (freq < 60000000)) { - error = max98095_i2c_write(M98095_026_SYS_CLK, 0x30); - } else { - debug("%s: Invalid master clock frequency\n", __func__); - return -1; - } - - debug("%s: Clock at %uHz\n", __func__, freq); - - if (error < 0) - return -1; - - max98095->sysclk = freq; - return 0; -} - -/* - * Sets Max98095 I2S format - * - * @param max98095 max98095 information - * @param fmt i2S format - supports a subset of the options defined - * in i2s.h. - * - * @return -1 for error and 0 Success. - */ -static int max98095_set_fmt(struct max98095_priv *max98095, int fmt, - enum en_max_audio_interface aif_id) -{ - u8 regval = 0; - int error = 0; - unsigned short M98095_DAI_CLKCFG_HI; - unsigned short M98095_DAI_CLKCFG_LO; - unsigned short M98095_DAI_FORMAT; - unsigned short M98095_DAI_CLOCK; - - if (fmt == max98095->fmt) - return 0; - - max98095->fmt = fmt; - - if (aif_id == AIF1) { - M98095_DAI_CLKCFG_HI = M98095_028_DAI1_CLKCFG_HI; - M98095_DAI_CLKCFG_LO = M98095_029_DAI1_CLKCFG_LO; - M98095_DAI_FORMAT = M98095_02A_DAI1_FORMAT; - M98095_DAI_CLOCK = M98095_02B_DAI1_CLOCK; - } else { - M98095_DAI_CLKCFG_HI = M98095_032_DAI2_CLKCFG_HI; - M98095_DAI_CLKCFG_LO = M98095_033_DAI2_CLKCFG_LO; - M98095_DAI_FORMAT = M98095_034_DAI2_FORMAT; - M98095_DAI_CLOCK = M98095_035_DAI2_CLOCK; - } - - switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { - case SND_SOC_DAIFMT_CBS_CFS: - /* Slave mode PLL */ - error |= max98095_i2c_write(M98095_DAI_CLKCFG_HI, - 0x80); - error |= max98095_i2c_write(M98095_DAI_CLKCFG_LO, - 0x00); - break; - case SND_SOC_DAIFMT_CBM_CFM: - /* Set to master mode */ - regval |= M98095_DAI_MAS; - break; - case SND_SOC_DAIFMT_CBS_CFM: - case SND_SOC_DAIFMT_CBM_CFS: - default: - debug("%s: Clock mode unsupported\n", __func__); - return -1; - } - - switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { - case SND_SOC_DAIFMT_I2S: - regval |= M98095_DAI_DLY; - break; - case SND_SOC_DAIFMT_LEFT_J: - break; - default: - debug("%s: Unrecognized format.\n", __func__); - return -1; - } - - switch (fmt & SND_SOC_DAIFMT_INV_MASK) { - case SND_SOC_DAIFMT_NB_NF: - break; - case SND_SOC_DAIFMT_NB_IF: - regval |= M98095_DAI_WCI; - break; - case SND_SOC_DAIFMT_IB_NF: - regval |= M98095_DAI_BCI; - break; - case SND_SOC_DAIFMT_IB_IF: - regval |= M98095_DAI_BCI | M98095_DAI_WCI; - break; - default: - debug("%s: Unrecognized inversion settings.\n", __func__); - return -1; - } - - error |= max98095_update_bits(M98095_DAI_FORMAT, - M98095_DAI_MAS | M98095_DAI_DLY | - M98095_DAI_BCI | M98095_DAI_WCI, - regval); - - error |= max98095_i2c_write(M98095_DAI_CLOCK, - M98095_DAI_BSEL64); - - if (error < 0) { - debug("%s: Error setting i2s format.\n", __func__); - return -1; - } - - return 0; -} - -/* - * resets the audio codec - * - * @return -1 for error and 0 success. - */ -static int max98095_reset(void) -{ - int i, ret; - - /* - * Gracefully reset the DSP core and the codec hardware in a proper - * sequence. - */ - ret = max98095_i2c_write(M98095_00F_HOST_CFG, 0); - if (ret != 0) { - debug("%s: Failed to reset DSP: %d\n", __func__, ret); - return ret; - } - - ret = max98095_i2c_write(M98095_097_PWR_SYS, 0); - if (ret != 0) { - debug("%s: Failed to reset codec: %d\n", __func__, ret); - return ret; - } - - /* - * Reset to hardware default for registers, as there is not a soft - * reset hardware control register. - */ - for (i = M98095_010_HOST_INT_CFG; i < M98095_REG_MAX_CACHED; i++) { - ret = max98095_i2c_write(i, 0); - if (ret < 0) { - debug("%s: Failed to reset: %d\n", __func__, ret); - return ret; - } - } - - return 0; -} - -/* - * Intialise max98095 codec device - * - * @param max98095 max98095 information - * - * @returns -1 for error and 0 Success. - */ -static int max98095_device_init(struct max98095_priv *max98095, - enum en_max_audio_interface aif_id) -{ - unsigned char id; - int error = 0; - - /* reset the codec, the DSP core, and disable all interrupts */ - error = max98095_reset(); - if (error != 0) { - debug("Reset\n"); - return error; - } - - /* initialize private data */ - max98095->sysclk = -1U; - max98095->rate = -1U; - max98095->fmt = -1U; - - error = max98095_i2c_read(M98095_0FF_REV_ID, &id); - if (error < 0) { - debug("%s: Failure reading hardware revision: %d\n", - __func__, id); - goto err_access; - } - debug("%s: Hardware revision: %c\n", __func__, (id - 0x40) + 'A'); - - error |= max98095_i2c_write(M98095_097_PWR_SYS, M98095_PWRSV); - - /* - * initialize registers to hardware default configuring audio - * interface2 to DAC - */ - if (aif_id == AIF1) - error |= max98095_i2c_write(M98095_048_MIX_DAC_LR, - M98095_DAI1L_TO_DACL | - M98095_DAI1R_TO_DACR); - else - error |= max98095_i2c_write(M98095_048_MIX_DAC_LR, - M98095_DAI2M_TO_DACL | - M98095_DAI2M_TO_DACR); - - error |= max98095_i2c_write(M98095_092_PWR_EN_OUT, - M98095_SPK_SPREADSPECTRUM); - error |= max98095_i2c_write(M98095_04E_CFG_HP, M98095_HPNORMAL); - if (aif_id == AIF1) - error |= max98095_i2c_write(M98095_02C_DAI1_IOCFG, - M98095_S1NORMAL | M98095_SDATA); - else - error |= max98095_i2c_write(M98095_036_DAI2_IOCFG, - M98095_S2NORMAL | M98095_SDATA); - - /* take the codec out of the shut down */ - error |= max98095_update_bits(M98095_097_PWR_SYS, M98095_SHDNRUN, - M98095_SHDNRUN); - /* route DACL and DACR output to HO and Spekers */ - error |= max98095_i2c_write(M98095_050_MIX_SPK_LEFT, 0x01); /* DACL */ - error |= max98095_i2c_write(M98095_051_MIX_SPK_RIGHT, 0x01);/* DACR */ - error |= max98095_i2c_write(M98095_04C_MIX_HP_LEFT, 0x01); /* DACL */ - error |= max98095_i2c_write(M98095_04D_MIX_HP_RIGHT, 0x01); /* DACR */ - - /* power Enable */ - error |= max98095_i2c_write(M98095_091_PWR_EN_OUT, 0xF3); - - /* set Volume */ - error |= max98095_i2c_write(M98095_064_LVL_HP_L, 15); - error |= max98095_i2c_write(M98095_065_LVL_HP_R, 15); - error |= max98095_i2c_write(M98095_067_LVL_SPK_L, 16); - error |= max98095_i2c_write(M98095_068_LVL_SPK_R, 16); - - /* Enable DAIs */ - error |= max98095_i2c_write(M98095_093_BIAS_CTRL, 0x30); - if (aif_id == AIF1) - error |= max98095_i2c_write(M98095_096_PWR_DAC_CK, 0x01); - else - error |= max98095_i2c_write(M98095_096_PWR_DAC_CK, 0x07); - -err_access: - if (error < 0) - return -1; - - return 0; -} - -static int max98095_do_init(struct sound_codec_info *pcodec_info, - enum en_max_audio_interface aif_id, - int sampling_rate, int mclk_freq, - int bits_per_sample) -{ - int ret = 0; - - /* Enable codec clock */ - set_xclkout(); - - /* shift the device address by 1 for 7 bit addressing */ - g_max98095_i2c_dev_addr = pcodec_info->i2c_dev_addr >> 1; - - if (pcodec_info->codec_type == CODEC_MAX_98095) { - g_max98095_info.devtype = MAX98095; - } else { - debug("%s: Codec id [%d] not defined\n", __func__, - pcodec_info->codec_type); - return -1; - } - - ret = max98095_device_init(&g_max98095_info, aif_id); - if (ret < 0) { - debug("%s: max98095 codec chip init failed\n", __func__); - return ret; - } - - ret = max98095_set_sysclk(&g_max98095_info, mclk_freq); - if (ret < 0) { - debug("%s: max98095 codec set sys clock failed\n", __func__); - return ret; - } - - ret = max98095_hw_params(&g_max98095_info, aif_id, sampling_rate, - bits_per_sample); - - if (ret == 0) { - ret = max98095_set_fmt(&g_max98095_info, - SND_SOC_DAIFMT_I2S | - SND_SOC_DAIFMT_NB_NF | - SND_SOC_DAIFMT_CBS_CFS, - aif_id); - } - - return ret; -} - -static int get_max98095_codec_values(struct sound_codec_info *pcodec_info, - const void *blob) -{ - int error = 0; -#ifdef CONFIG_OF_CONTROL - enum fdt_compat_id compat; - int node; - int parent; - - /* Get the node from FDT for codec */ - node = fdtdec_next_compatible(blob, 0, COMPAT_MAXIM_98095_CODEC); - if (node <= 0) { - debug("EXYNOS_SOUND: No node for codec in device tree\n"); - debug("node = %d\n", node); - return -1; - } - - parent = fdt_parent_offset(blob, node); - if (parent < 0) { - debug("%s: Cannot find node parent\n", __func__); - return -1; - } - - compat = fdtdec_lookup(blob, parent); - switch (compat) { - case COMPAT_SAMSUNG_S3C2440_I2C: - pcodec_info->i2c_bus = i2c_get_bus_num_fdt(parent); - error |= pcodec_info->i2c_bus; - debug("i2c bus = %d\n", pcodec_info->i2c_bus); - pcodec_info->i2c_dev_addr = fdtdec_get_int(blob, node, - "reg", 0); - error |= pcodec_info->i2c_dev_addr; - debug("i2c dev addr = %x\n", pcodec_info->i2c_dev_addr); - break; - default: - debug("%s: Unknown compat id %d\n", __func__, compat); - return -1; - } -#else - pcodec_info->i2c_bus = AUDIO_I2C_BUS; - pcodec_info->i2c_dev_addr = AUDIO_I2C_REG; - debug("i2c dev addr = %d\n", pcodec_info->i2c_dev_addr); -#endif - pcodec_info->codec_type = CODEC_MAX_98095; - if (error == -1) { - debug("fail to get max98095 codec node properties\n"); - return -1; - } - - return 0; -} - -/* max98095 Device Initialisation */ -int max98095_init(const void *blob, enum en_max_audio_interface aif_id, - int sampling_rate, int mclk_freq, - int bits_per_sample) -{ - int ret; - int old_bus = i2c_get_bus_num(); - struct sound_codec_info *pcodec_info = &g_codec_info; - - if (get_max98095_codec_values(pcodec_info, blob) < 0) { - debug("FDT Codec values failed\n"); - return -1; - } - - i2c_set_bus_num(pcodec_info->i2c_bus); - ret = max98095_do_init(pcodec_info, aif_id, sampling_rate, mclk_freq, - bits_per_sample); - i2c_set_bus_num(old_bus); - - return ret; -} |