From 47f5b692e04a8d7989ee14591a61be26e340a17b Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Thu, 23 May 2013 13:58:00 +0200 Subject: ASoC: adau1701: refactor firmware loading function Pass a struct i2c_client * to adau1701_load_firmware directly to make the code more readable. Signed-off-by: Daniel Mack Acked-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c index dafdbe8..95e1677 100644 --- a/sound/soc/codecs/adau1701.c +++ b/sound/soc/codecs/adau1701.c @@ -180,9 +180,9 @@ static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg) return value; } -static int adau1701_load_firmware(struct snd_soc_codec *codec) +static int adau1701_load_firmware(struct i2c_client *client) { - return process_sigma_firmware(codec->control_data, ADAU1701_FIRMWARE); + return process_sigma_firmware(client, ADAU1701_FIRMWARE); } static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec, @@ -455,10 +455,11 @@ static struct snd_soc_dai_driver adau1701_dai = { static int adau1701_probe(struct snd_soc_codec *codec) { int ret; + struct i2c_client *client = to_i2c_client(codec->dev); - codec->control_data = to_i2c_client(codec->dev); + codec->control_data = client; - ret = adau1701_load_firmware(codec); + ret = adau1701_load_firmware(client); if (ret) dev_warn(codec->dev, "Failed to load firmware\n"); -- cgit v0.10.2 From 04561eacaa6ccd1988e468cdcbf4acc475ae2221 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Thu, 23 May 2013 15:46:05 +0200 Subject: ASoC: codecs: adau1701: add DT bindings Apart from pure matching, the bindings also support setting the the reset gpio line. Signed-off-by: Daniel Mack Acked-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/Documentation/devicetree/bindings/sound/adi,adau1701.txt b/Documentation/devicetree/bindings/sound/adi,adau1701.txt new file mode 100644 index 0000000..3afeda7 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/adi,adau1701.txt @@ -0,0 +1,23 @@ +Analog Devices ADAU1701 + +Required properties: + + - compatible: Should contain "adi,adau1701" + - reg: The i2c address. Value depends on the state of ADDR0 + and ADDR1, as wired in hardware. + +Optional properties: + + - reset-gpio: A GPIO spec to define which pin is connected to the + chip's !RESET pin. If specified, the driver will + assert a hardware reset at probe time. + +Examples: + + i2c_bus { + adau1701@34 { + compatible = "adi,adau1701"; + reg = <0x34>; + reset-gpio = <&gpio 23 0>; + }; + }; diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c index 95e1677..3fc1763 100644 --- a/sound/soc/codecs/adau1701.c +++ b/sound/soc/codecs/adau1701.c @@ -13,6 +13,9 @@ #include #include #include +#include +#include +#include #include #include #include @@ -452,6 +455,14 @@ 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; @@ -494,12 +505,33 @@ 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 ret; - adau1701 = devm_kzalloc(&client->dev, sizeof(*adau1701), GFP_KERNEL); + adau1701 = devm_kzalloc(dev, sizeof(*adau1701), GFP_KERNEL); if (!adau1701) return -ENOMEM; + 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; + } + + 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; + + /* minimum reset time is 20ns */ + udelay(1); + gpio_set_value(gpio_nreset, 1); + /* power-up time may be as long as 85ms */ + mdelay(85); + } + i2c_set_clientdata(client, adau1701); ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv, &adau1701_dai, 1); @@ -522,6 +554,7 @@ 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, -- cgit v0.10.2 From f724ba3b07aa5a012b7b0be323484195b5026282 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Fri, 7 Jun 2013 13:53:04 +0200 Subject: ASoC: codecs: adau1701: factor out firmware reset Some runtime-determined constraints might need to be satisfied prior to firmware loading, so the actual download and releasing the device from reset has to be postponed. Factor it out first, so we have everything at one place. This also changes the behaviour in a way that adau1701_i2c_probe() will assert the reset line, and wait for the codec probe to release it. Signed-off-by: Daniel Mack Acked-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c index 3fc1763..b6b1a77 100644 --- a/sound/soc/codecs/adau1701.c +++ b/sound/soc/codecs/adau1701.c @@ -90,6 +90,7 @@ #define ADAU1701_FIRMWARE "adau1701.bin" struct adau1701 { + int gpio_nreset; unsigned int dai_fmt; }; @@ -183,9 +184,37 @@ static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg) return value; } -static int adau1701_load_firmware(struct i2c_client *client) +static void adau1701_reset(struct snd_soc_codec *codec) { - return process_sigma_firmware(client, ADAU1701_FIRMWARE); + struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); + + if (!gpio_is_valid(adau1701->gpio_nreset)) + return; + + 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); +} + +static int adau1701_init(struct snd_soc_codec *codec) +{ + int ret; + struct i2c_client *client = to_i2c_client(codec->dev); + + adau1701_reset(codec); + + ret = process_sigma_firmware(client, ADAU1701_FIRMWARE); + if (ret) { + dev_warn(codec->dev, "Failed to load firmware\n"); + return ret; + } + + snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT); + + return 0; } static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec, @@ -466,15 +495,13 @@ MODULE_DEVICE_TABLE(of, adau1701_dt_ids); static int adau1701_probe(struct snd_soc_codec *codec) { int ret; - struct i2c_client *client = to_i2c_client(codec->dev); - codec->control_data = client; + codec->control_data = to_i2c_client(codec->dev); - ret = adau1701_load_firmware(client); + ret = adau1701_init(codec); if (ret) - dev_warn(codec->dev, "Failed to load firmware\n"); + return ret; - snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT); snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR); return 0; @@ -524,14 +551,10 @@ static int adau1701_i2c_probe(struct i2c_client *client, "ADAU1701 Reset"); if (ret < 0) return ret; - - /* minimum reset time is 20ns */ - udelay(1); - gpio_set_value(gpio_nreset, 1); - /* power-up time may be as long as 85ms */ - mdelay(85); } + adau1701->gpio_nreset = gpio_nreset; + i2c_set_clientdata(client, adau1701); ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv, &adau1701_dai, 1); -- cgit v0.10.2 From de9fc724daaf5ceaf0af6ef23b2b3b1d933273e3 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 24 Jun 2013 16:31:29 +0200 Subject: ASoC: adau1701: move firmware download to adau1701_reset() The chip needs a new download after each reset, so the code to do that needs to live in adau1701_reset(). Signed-off-by: Daniel Mack Acked-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c index b6b1a77..997fc3b 100644 --- a/sound/soc/codecs/adau1701.c +++ b/sound/soc/codecs/adau1701.c @@ -184,27 +184,20 @@ static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg) return value; } -static void adau1701_reset(struct snd_soc_codec *codec) +static int adau1701_reset(struct snd_soc_codec *codec) { struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); - - if (!gpio_is_valid(adau1701->gpio_nreset)) - return; - - 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); -} - -static int adau1701_init(struct snd_soc_codec *codec) -{ - int ret; struct i2c_client *client = to_i2c_client(codec->dev); + int ret; - adau1701_reset(codec); + 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); + } ret = process_sigma_firmware(client, ADAU1701_FIRMWARE); if (ret) { @@ -213,6 +206,7 @@ static int adau1701_init(struct snd_soc_codec *codec) } snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT); + snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR); return 0; } @@ -498,12 +492,10 @@ static int adau1701_probe(struct snd_soc_codec *codec) codec->control_data = to_i2c_client(codec->dev); - ret = adau1701_init(codec); + ret = adau1701_reset(codec); if (ret) return ret; - snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR); - return 0; } -- cgit v0.10.2 From 2352d4bf43b105ec2da5f43211db4a4c9bf34d4e Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 24 Jun 2013 16:31:30 +0200 Subject: ASoC: adau1701: allow configuration of PLL mode pins The ADAU1701 has 2 hardware pins to configure the PLL mode in accordance to the MCLK-to-LRCLK ratio. These pins have to be stable before the chip is released from reset, and a full reset cycle, including a new firmware download is needed whenever they change. This patch adds GPIO properties to the DT bindings of the Codec, and implements makes the set_sysclk memorize the configured sysclk. Because the run-time parameters are unknown at probe time, the first firmware download is postponed to the first hw_params call, when the driver can determine the mclk/lrclk divider. Subsequent downloads are only issued when the divider configuration changes. Signed-off-by: Daniel Mack Acked-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/Documentation/devicetree/bindings/sound/adi,adau1701.txt b/Documentation/devicetree/bindings/sound/adi,adau1701.txt index 3afeda7..a9fbed1 100644 --- a/Documentation/devicetree/bindings/sound/adi,adau1701.txt +++ b/Documentation/devicetree/bindings/sound/adi,adau1701.txt @@ -11,6 +11,11 @@ Optional properties: - reset-gpio: A GPIO spec to define which pin is connected to the chip's !RESET pin. If specified, the driver will assert a hardware reset at probe time. + - adi,pll-mode-gpios: An array of two GPIO specs to describe the GPIOs + the ADAU's PLL config pins are connected to. + The state of the pins are set according to the + configured clock divider on ASoC side before the + firmware is loaded. Examples: @@ -19,5 +24,6 @@ Examples: compatible = "adi,adau1701"; reg = <0x34>; reset-gpio = <&gpio 23 0>; + adi,pll-mode-gpios = <&gpio 24 0 &gpio 25 0>; }; }; diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c index 997fc3b..770d90e 100644 --- a/sound/soc/codecs/adau1701.c +++ b/sound/soc/codecs/adau1701.c @@ -87,11 +87,16 @@ #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; }; static const struct snd_kcontrol_new adau1701_controls[] = { @@ -184,12 +189,38 @@ static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg) return value; } -static int adau1701_reset(struct snd_soc_codec *codec) +static int adau1701_reset(struct snd_soc_codec *codec, unsigned int clkdiv) { 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 */ @@ -199,10 +230,16 @@ static int adau1701_reset(struct snd_soc_codec *codec) mdelay(85); } - ret = process_sigma_firmware(client, ADAU1701_FIRMWARE); - if (ret) { - dev_warn(codec->dev, "Failed to load firmware\n"); - return ret; + /* + * 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; + } } snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT); @@ -285,8 +322,22 @@ 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: @@ -429,6 +480,7 @@ 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: @@ -442,6 +494,7 @@ 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; } @@ -489,11 +542,21 @@ MODULE_DEVICE_TABLE(of, adau1701_dt_ids); static int adau1701_probe(struct snd_soc_codec *codec) { int ret; + struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); codec->control_data = to_i2c_client(codec->dev); - ret = adau1701_reset(codec); - if (ret) + /* + * 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; return 0; @@ -526,6 +589,7 @@ static int adau1701_i2c_probe(struct i2c_client *client, struct adau1701 *adau1701; struct device *dev = &client->dev; int gpio_nreset = -EINVAL; + int gpio_pll_mode[2] = { -EINVAL, -EINVAL }; int ret; adau1701 = devm_kzalloc(dev, sizeof(*adau1701), GFP_KERNEL); @@ -536,6 +600,16 @@ static int adau1701_i2c_probe(struct i2c_client *client, 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]; } if (gpio_is_valid(gpio_nreset)) { @@ -545,7 +619,24 @@ static int adau1701_i2c_probe(struct i2c_client *client, 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, -- cgit v0.10.2 From 45405d58924f49a13b924ed6db6fe47981487b4a Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 24 Jun 2013 16:31:31 +0200 Subject: ASoC: adau1701: switch to direct regmap API usage The hardware I/O has to be open-coded due to registers of unequal sizes. Other than that, the transition is straight forward. Signed-off-by: Daniel Mack Acked-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c index 770d90e..881bab4 100644 --- a/sound/soc/codecs/adau1701.c +++ b/sound/soc/codecs/adau1701.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -24,16 +25,16 @@ #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_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) @@ -97,6 +98,7 @@ struct adau1701 { unsigned int dai_fmt; unsigned int pll_clkdiv; unsigned int sysclk; + struct regmap *regmap; }; static const struct snd_kcontrol_new adau1701_controls[] = { @@ -128,7 +130,7 @@ 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) { @@ -142,33 +144,42 @@ 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]; 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) @@ -177,16 +188,45 @@ 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; - ret = snd_soc_cache_read(codec, reg, &value); - if (ret) + 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 = 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_reset(struct snd_soc_codec *codec, unsigned int clkdiv) @@ -242,8 +282,11 @@ static int adau1701_reset(struct snd_soc_codec *codec, unsigned int clkdiv) } } - snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT); - snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR); + 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; } @@ -429,8 +472,8 @@ 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; @@ -567,9 +610,6 @@ 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, @@ -577,12 +617,19 @@ 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) { @@ -596,6 +643,11 @@ static int adau1701_i2c_probe(struct i2c_client *client, 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) -- cgit v0.10.2 From 97d0a868450d08fae0db3f53459852901c6e2f4f Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 24 Jun 2013 16:31:32 +0200 Subject: ASoC: adau1701: add support for pin muxing The ADAU1701 has 12 pins that can be configured depending on the system configuration. Allow settting the corresponding registers from DT. Signed-off-by: Daniel Mack Acked-by: Lars-Peter Clausen Signed-off-by: Mark Brown diff --git a/Documentation/devicetree/bindings/sound/adi,adau1701.txt b/Documentation/devicetree/bindings/sound/adi,adau1701.txt index a9fbed1..547a49b 100644 --- a/Documentation/devicetree/bindings/sound/adi,adau1701.txt +++ b/Documentation/devicetree/bindings/sound/adi,adau1701.txt @@ -16,6 +16,10 @@ Optional properties: The state of the pins are set according to the configured clock divider on ASoC side before the firmware is loaded. + - adi,pin-config: An array of 12 numerical values selecting one of the + pin configurations as described in the datasheet, + table 53. Note that the value of this property has + to be prefixed with '/bits/ 8'. Examples: @@ -25,5 +29,7 @@ Examples: reg = <0x34>; reset-gpio = <&gpio 23 0>; adi,pll-mode-gpios = <&gpio 24 0 &gpio 25 0>; + adi,pin-config = /bits/ 8 <0x4 0x7 0x5 0x5 0x4 0x4 + 0x4 0x4 0x4 0x4 0x4 0x4>; }; }; diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c index 881bab4..0e250f1 100644 --- a/sound/soc/codecs/adau1701.c +++ b/sound/soc/codecs/adau1701.c @@ -30,6 +30,9 @@ #define ADAU1701_SERICTL 0x081f #define ADAU1701_AUXNPOW 0x0822 +#define ADAU1701_PINCONF_0 0x0820 +#define ADAU1701_PINCONF_1 0x0821 +#define ADAU1701_AUXNPOW 0x0822 #define ADAU1701_OSCIPOW 0x0826 #define ADAU1701_DACSET 0x0827 @@ -99,6 +102,7 @@ struct adau1701 { unsigned int pll_clkdiv; unsigned int sysclk; struct regmap *regmap; + u8 pin_config[12]; }; static const struct snd_kcontrol_new adau1701_controls[] = { @@ -134,6 +138,9 @@ 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: @@ -164,7 +171,7 @@ static int adau1701_reg_write(void *context, unsigned int reg, 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(&client->dev, reg); @@ -584,7 +591,8 @@ MODULE_DEVICE_TABLE(of, adau1701_dt_ids); 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); @@ -602,6 +610,19 @@ static int adau1701_probe(struct snd_soc_codec *codec) if (ret < 0) return ret; + /* set up pin config */ + val = 0; + for (i = 0; i < 6; i++) + val |= adau1701->pin_config[i] << (i * 4); + + 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; } @@ -662,6 +683,13 @@ static int adau1701_i2c_probe(struct i2c_client *client, "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)) { -- cgit v0.10.2