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author | Mark Brown <broonie@linaro.org> | 2013-06-28 11:17:04 (GMT) |
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committer | Mark Brown <broonie@linaro.org> | 2013-06-28 11:17:04 (GMT) |
commit | b1fffb93d2a7ad3b68262585c126cae2b76d4d2d (patch) | |
tree | a0ff846c0a78b02aaa6741c9810acaa4eaf9de1d /sound | |
parent | b047e1cce8fe32475ab61846772943a5e4c0a908 (diff) | |
parent | 97d0a868450d08fae0db3f53459852901c6e2f4f (diff) | |
download | linux-b1fffb93d2a7ad3b68262585c126cae2b76d4d2d.tar.xz |
Merge remote-tracking branch 'asoc/topic/adau1701' into asoc-next
Diffstat (limited to 'sound')
-rw-r--r-- | sound/soc/codecs/adau1701.c | 302 |
1 files changed, 261 insertions, 41 deletions
diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c index dafdbe8..0e250f1 100644 --- a/sound/soc/codecs/adau1701.c +++ b/sound/soc/codecs/adau1701.c @@ -13,6 +13,10 @@ #include <linux/i2c.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/of_device.h> +#include <linux/regmap.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -21,16 +25,19 @@ #include "sigmadsp.h" #include "adau1701.h" -#define ADAU1701_DSPCTRL 0x1c -#define ADAU1701_SEROCTL 0x1e -#define ADAU1701_SERICTL 0x1f +#define ADAU1701_DSPCTRL 0x081c +#define ADAU1701_SEROCTL 0x081e +#define ADAU1701_SERICTL 0x081f -#define ADAU1701_AUXNPOW 0x22 +#define ADAU1701_AUXNPOW 0x0822 +#define ADAU1701_PINCONF_0 0x0820 +#define ADAU1701_PINCONF_1 0x0821 +#define ADAU1701_AUXNPOW 0x0822 -#define ADAU1701_OSCIPOW 0x26 -#define ADAU1701_DACSET 0x27 +#define ADAU1701_OSCIPOW 0x0826 +#define ADAU1701_DACSET 0x0827 -#define ADAU1701_NUM_REGS 0x28 +#define ADAU1701_MAX_REGISTER 0x0828 #define ADAU1701_DSPCTRL_CR (1 << 2) #define ADAU1701_DSPCTRL_DAM (1 << 3) @@ -84,10 +91,18 @@ #define ADAU1701_OSCIPOW_OPD 0x04 #define ADAU1701_DACSET_DACINIT 1 +#define ADAU1707_CLKDIV_UNSET (-1UL) + #define ADAU1701_FIRMWARE "adau1701.bin" struct adau1701 { + int gpio_nreset; + int gpio_pll_mode[2]; unsigned int dai_fmt; + unsigned int pll_clkdiv; + unsigned int sysclk; + struct regmap *regmap; + u8 pin_config[12]; }; static const struct snd_kcontrol_new adau1701_controls[] = { @@ -119,10 +134,13 @@ static const struct snd_soc_dapm_route adau1701_dapm_routes[] = { { "ADC", NULL, "IN1" }, }; -static unsigned int adau1701_register_size(struct snd_soc_codec *codec, +static unsigned int adau1701_register_size(struct device *dev, unsigned int reg) { switch (reg) { + case ADAU1701_PINCONF_0: + case ADAU1701_PINCONF_1: + return 3; case ADAU1701_DSPCTRL: case ADAU1701_SEROCTL: case ADAU1701_AUXNPOW: @@ -133,33 +151,42 @@ static unsigned int adau1701_register_size(struct snd_soc_codec *codec, return 1; } - dev_err(codec->dev, "Unsupported register address: %d\n", reg); + dev_err(dev, "Unsupported register address: %d\n", reg); return 0; } -static int adau1701_write(struct snd_soc_codec *codec, unsigned int reg, - unsigned int value) +static bool adau1701_volatile_reg(struct device *dev, unsigned int reg) { + switch (reg) { + case ADAU1701_DACSET: + return true; + default: + return false; + } +} + +static int adau1701_reg_write(void *context, unsigned int reg, + unsigned int value) +{ + struct i2c_client *client = context; unsigned int i; unsigned int size; - uint8_t buf[4]; + uint8_t buf[5]; int ret; - size = adau1701_register_size(codec, reg); + size = adau1701_register_size(&client->dev, reg); if (size == 0) return -EINVAL; - snd_soc_cache_write(codec, reg, value); - - buf[0] = 0x08; - buf[1] = reg; + buf[0] = reg >> 8; + buf[1] = reg & 0xff; for (i = size + 1; i >= 2; --i) { buf[i] = value; value >>= 8; } - ret = i2c_master_send(to_i2c_client(codec->dev), buf, size + 2); + ret = i2c_master_send(client, buf, size + 2); if (ret == size + 2) return 0; else if (ret < 0) @@ -168,21 +195,107 @@ static int adau1701_write(struct snd_soc_codec *codec, unsigned int reg, return -EIO; } -static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg) +static int adau1701_reg_read(void *context, unsigned int reg, + unsigned int *value) { - unsigned int value; - unsigned int ret; + int ret; + unsigned int i; + unsigned int size; + uint8_t send_buf[2], recv_buf[3]; + struct i2c_client *client = context; + struct i2c_msg msgs[2]; + + size = adau1701_register_size(&client->dev, reg); + if (size == 0) + return -EINVAL; + + send_buf[0] = reg >> 8; + send_buf[1] = reg & 0xff; + + msgs[0].addr = client->addr; + msgs[0].len = sizeof(send_buf); + msgs[0].buf = send_buf; + msgs[0].flags = 0; + + msgs[1].addr = client->addr; + msgs[1].len = size; + msgs[1].buf = recv_buf; + msgs[1].flags = I2C_M_RD; - ret = snd_soc_cache_read(codec, reg, &value); - if (ret) + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + if (ret < 0) return ret; + else if (ret != ARRAY_SIZE(msgs)) + return -EIO; + + *value = 0; + + for (i = 0; i < size; i++) + *value |= recv_buf[i] << (i * 8); - return value; + return 0; } -static int adau1701_load_firmware(struct snd_soc_codec *codec) +static int adau1701_reset(struct snd_soc_codec *codec, unsigned int clkdiv) { - return process_sigma_firmware(codec->control_data, ADAU1701_FIRMWARE); + struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); + struct i2c_client *client = to_i2c_client(codec->dev); + int ret; + + if (clkdiv != ADAU1707_CLKDIV_UNSET && + gpio_is_valid(adau1701->gpio_pll_mode[0]) && + gpio_is_valid(adau1701->gpio_pll_mode[1])) { + switch (clkdiv) { + case 64: + gpio_set_value(adau1701->gpio_pll_mode[0], 0); + gpio_set_value(adau1701->gpio_pll_mode[1], 0); + break; + case 256: + gpio_set_value(adau1701->gpio_pll_mode[0], 0); + gpio_set_value(adau1701->gpio_pll_mode[1], 1); + break; + case 384: + gpio_set_value(adau1701->gpio_pll_mode[0], 1); + gpio_set_value(adau1701->gpio_pll_mode[1], 0); + break; + case 0: /* fallback */ + case 512: + gpio_set_value(adau1701->gpio_pll_mode[0], 1); + gpio_set_value(adau1701->gpio_pll_mode[1], 1); + break; + } + } + + adau1701->pll_clkdiv = clkdiv; + + if (gpio_is_valid(adau1701->gpio_nreset)) { + gpio_set_value(adau1701->gpio_nreset, 0); + /* minimum reset time is 20ns */ + udelay(1); + gpio_set_value(adau1701->gpio_nreset, 1); + /* power-up time may be as long as 85ms */ + mdelay(85); + } + + /* + * Postpone the firmware download to a point in time when we + * know the correct PLL setup + */ + if (clkdiv != ADAU1707_CLKDIV_UNSET) { + ret = process_sigma_firmware(client, ADAU1701_FIRMWARE); + if (ret) { + dev_warn(codec->dev, "Failed to load firmware\n"); + return ret; + } + } + + regmap_write(adau1701->regmap, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT); + regmap_write(adau1701->regmap, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR); + + regcache_mark_dirty(adau1701->regmap); + regcache_sync(adau1701->regmap); + + return 0; } static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec, @@ -259,8 +372,22 @@ static int adau1701_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; + struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); + unsigned int clkdiv = adau1701->sysclk / params_rate(params); snd_pcm_format_t format; unsigned int val; + int ret; + + /* + * If the mclk/lrclk ratio changes, the chip needs updated PLL + * mode GPIO settings, and a full reset cycle, including a new + * firmware upload. + */ + if (clkdiv != adau1701->pll_clkdiv) { + ret = adau1701_reset(codec, clkdiv); + if (ret < 0) + return ret; + } switch (params_rate(params)) { case 192000: @@ -352,8 +479,8 @@ static int adau1701_set_dai_fmt(struct snd_soc_dai *codec_dai, adau1701->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; - snd_soc_write(codec, ADAU1701_SERICTL, serictl); - snd_soc_update_bits(codec, ADAU1701_SEROCTL, + regmap_write(adau1701->regmap, ADAU1701_SERICTL, serictl); + regmap_update_bits(adau1701->regmap, ADAU1701_SEROCTL, ~ADAU1701_SEROCTL_WORD_LEN_MASK, seroctl); return 0; @@ -403,6 +530,7 @@ static int adau1701_set_sysclk(struct snd_soc_codec *codec, int clk_id, int source, unsigned int freq, int dir) { unsigned int val; + struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); switch (clk_id) { case ADAU1701_CLK_SRC_OSC: @@ -416,6 +544,7 @@ static int adau1701_set_sysclk(struct snd_soc_codec *codec, int clk_id, } snd_soc_update_bits(codec, ADAU1701_OSCIPOW, ADAU1701_OSCIPOW_OPD, val); + adau1701->sysclk = freq; return 0; } @@ -452,18 +581,47 @@ static struct snd_soc_dai_driver adau1701_dai = { .symmetric_rates = 1, }; +#ifdef CONFIG_OF +static const struct of_device_id adau1701_dt_ids[] = { + { .compatible = "adi,adau1701", }, + { } +}; +MODULE_DEVICE_TABLE(of, adau1701_dt_ids); +#endif + static int adau1701_probe(struct snd_soc_codec *codec) { - int ret; + int i, ret; + unsigned int val; + struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); codec->control_data = to_i2c_client(codec->dev); - ret = adau1701_load_firmware(codec); - if (ret) - dev_warn(codec->dev, "Failed to load firmware\n"); + /* + * Let the pll_clkdiv variable default to something that won't happen + * at runtime. That way, we can postpone the firmware download from + * adau1701_reset() to a point in time when we know the correct PLL + * mode parameters. + */ + adau1701->pll_clkdiv = ADAU1707_CLKDIV_UNSET; + + /* initalize with pre-configured pll mode settings */ + ret = adau1701_reset(codec, adau1701->pll_clkdiv); + if (ret < 0) + return ret; + + /* set up pin config */ + val = 0; + for (i = 0; i < 6; i++) + val |= adau1701->pin_config[i] << (i * 4); - snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT); - snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR); + regmap_write(adau1701->regmap, ADAU1701_PINCONF_0, val); + + val = 0; + for (i = 0; i < 6; i++) + val |= adau1701->pin_config[i + 6] << (i * 4); + + regmap_write(adau1701->regmap, ADAU1701_PINCONF_1, val); return 0; } @@ -473,9 +631,6 @@ static struct snd_soc_codec_driver adau1701_codec_drv = { .set_bias_level = adau1701_set_bias_level, .idle_bias_off = true, - .reg_cache_size = ADAU1701_NUM_REGS, - .reg_word_size = sizeof(u16), - .controls = adau1701_controls, .num_controls = ARRAY_SIZE(adau1701_controls), .dapm_widgets = adau1701_dapm_widgets, @@ -483,22 +638,86 @@ static struct snd_soc_codec_driver adau1701_codec_drv = { .dapm_routes = adau1701_dapm_routes, .num_dapm_routes = ARRAY_SIZE(adau1701_dapm_routes), - .write = adau1701_write, - .read = adau1701_read, - .set_sysclk = adau1701_set_sysclk, }; +static const struct regmap_config adau1701_regmap = { + .reg_bits = 16, + .val_bits = 32, + .max_register = ADAU1701_MAX_REGISTER, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = adau1701_volatile_reg, + .reg_write = adau1701_reg_write, + .reg_read = adau1701_reg_read, +}; + static int adau1701_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct adau1701 *adau1701; + struct device *dev = &client->dev; + int gpio_nreset = -EINVAL; + int gpio_pll_mode[2] = { -EINVAL, -EINVAL }; int ret; - adau1701 = devm_kzalloc(&client->dev, sizeof(*adau1701), GFP_KERNEL); + adau1701 = devm_kzalloc(dev, sizeof(*adau1701), GFP_KERNEL); if (!adau1701) return -ENOMEM; + adau1701->regmap = devm_regmap_init(dev, NULL, client, + &adau1701_regmap); + if (IS_ERR(adau1701->regmap)) + return PTR_ERR(adau1701->regmap); + + if (dev->of_node) { + gpio_nreset = of_get_named_gpio(dev->of_node, "reset-gpio", 0); + if (gpio_nreset < 0 && gpio_nreset != -ENOENT) + return gpio_nreset; + + gpio_pll_mode[0] = of_get_named_gpio(dev->of_node, + "adi,pll-mode-gpios", 0); + if (gpio_pll_mode[0] < 0 && gpio_pll_mode[0] != -ENOENT) + return gpio_pll_mode[0]; + + gpio_pll_mode[1] = of_get_named_gpio(dev->of_node, + "adi,pll-mode-gpios", 1); + if (gpio_pll_mode[1] < 0 && gpio_pll_mode[1] != -ENOENT) + return gpio_pll_mode[1]; + + of_property_read_u32(dev->of_node, "adi,pll-clkdiv", + &adau1701->pll_clkdiv); + + of_property_read_u8_array(dev->of_node, "adi,pin-config", + adau1701->pin_config, + ARRAY_SIZE(adau1701->pin_config)); + } + + if (gpio_is_valid(gpio_nreset)) { + ret = devm_gpio_request_one(dev, gpio_nreset, GPIOF_OUT_INIT_LOW, + "ADAU1701 Reset"); + if (ret < 0) + return ret; + } + + if (gpio_is_valid(gpio_pll_mode[0]) && + gpio_is_valid(gpio_pll_mode[1])) { + ret = devm_gpio_request_one(dev, gpio_pll_mode[0], + GPIOF_OUT_INIT_LOW, + "ADAU1701 PLL mode 0"); + if (ret < 0) + return ret; + + ret = devm_gpio_request_one(dev, gpio_pll_mode[1], + GPIOF_OUT_INIT_LOW, + "ADAU1701 PLL mode 1"); + if (ret < 0) + return ret; + } + + adau1701->gpio_nreset = gpio_nreset; + adau1701->gpio_pll_mode[0] = gpio_pll_mode[0]; + adau1701->gpio_pll_mode[1] = gpio_pll_mode[1]; + i2c_set_clientdata(client, adau1701); ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv, &adau1701_dai, 1); @@ -521,6 +740,7 @@ static struct i2c_driver adau1701_i2c_driver = { .driver = { .name = "adau1701", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(adau1701_dt_ids), }, .probe = adau1701_i2c_probe, .remove = adau1701_i2c_remove, |