On Wed, Oct 16, 2019 at 4:59 PM shumingf@realtek.com wrote:

From: Shuming Fan shumingf@realtek.com

Typically, the r0 (calibration data) and temperature were measured in the factory. This information is written into the non-volatile area where keeps data whether factory reset or OS update. In Chromium OS case, the coreboot will read the info from VPD and create the device property for each rt1011.

Signed-off-by: Shuming Fan shumingf@realtek.com

sound/soc/codecs/rt1011.c | 41 ++++++++++++++++++++++++++++++++++++++- sound/soc/codecs/rt1011.h | 1 + 2 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt1011.c b/sound/soc/codecs/rt1011.c index b927e61b32df..ad049cfddcb0 100644 --- a/sound/soc/codecs/rt1011.c +++ b/sound/soc/codecs/rt1011.c @@ -2328,8 +2328,12 @@ static void rt1011_calibration_work(struct work_struct *work) struct rt1011_priv *rt1011 = container_of(work, struct rt1011_priv, cali_work); struct snd_soc_component *component = rt1011->component;

•   unsigned int r0_integer, r0_factor, format;
  
  

•   rt1011_calibrate(rt1011, 1);
  

•   if (rt1011->r0_calib)
  

•           rt1011_calibrate(rt1011, 0);
  

•   else
  

•           rt1011_calibrate(rt1011, 1);
  
    /*
     * This flag should reset after booting.
  

@@ -2340,6 +2344,39 @@ static void rt1011_calibration_work(struct work_struct *work)

    /* initial */
    rt1011_reg_init(component);

•   /* Apply temperature and calibration data from device property */
  

•   if (rt1011->temperature_calib) {
  

•           snd_soc_component_update_bits(component,
  

•                   RT1011_STP_INITIAL_RESISTANCE_TEMP, 0x3ff,
  

•                   (rt1011->temperature_calib << 2));
  

•   }
  

•   if (rt1011->r0_calib) {
  

•           rt1011->r0_reg = rt1011->r0_calib;
  

•           format = 2147483648U; /* 2^24 * 128 */
  

•           r0_integer = format / rt1011->r0_reg / 128;
  

•           r0_factor = ((format / rt1011->r0_reg * 100) / 128)
  

•                                           - (r0_integer * 100);
  

•           dev_info(component->dev,        "DP r0 resistance about %d.%02d ohm, reg=0x%X\n",
  

•                   r0_integer, r0_factor, rt1011->r0_reg);
  

•           rt1011_r0_load(rt1011);
  

•   }
  

+}

+static int rt1011_parse_dp(struct rt1011_priv *rt1011, struct device *dev) +{

•   device_property_read_u32(dev, "realtek,temperature_calib",
  

•           &rt1011->temperature_calib);
  

•   device_property_read_u32(dev, "realtek,r0_calib",
  

•           &rt1011->r0_calib);
  

•   dev_dbg(dev, "%s: r0_calib: 0x%x, temperture_calib: 0x%x",
  

•           __func__, rt1011->r0_calib, rt1011->temperature_calib);
  

•   return 0;
  

}

static int rt1011_i2c_probe(struct i2c_client *i2c, @@ -2356,6 +2393,8 @@ static int rt1011_i2c_probe(struct i2c_client *i2c,

    i2c_set_clientdata(i2c, rt1011);

•   rt1011_parse_dp(rt1011, &i2c->dev);
  

•   rt1011->regmap = devm_regmap_init_i2c(i2c, &rt1011_regmap);
    if (IS_ERR(rt1011->regmap)) {
            ret = PTR_ERR(rt1011->regmap);
  

diff --git a/sound/soc/codecs/rt1011.h b/sound/soc/codecs/rt1011.h index 3f7dea1191ad..68fadc15fa8c 100644 --- a/sound/soc/codecs/rt1011.h +++ b/sound/soc/codecs/rt1011.h @@ -690,6 +690,7 @@ struct rt1011_priv {

    int bq_drc_set;
    unsigned int r0_reg, cali_done;

•   unsigned int r0_calib, temperature_calib;
    int recv_spk_mode;
  

};

-- 2.23.0

FYI, the relevant coreboot patch series is at https://review.coreboot.org/c/coreboot/+/36031 I have tested it with coreboot changes.

Tested-By: Cheng-Yi Chiang cychiang@chromium.org

The patch

ASoC: rt1011: Read and apply r0 and temperature device property

has been applied to the asoc tree at

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.5

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

From 8de6e755069fbfaefae67d3abff2b2e3d83db986 Mon Sep 17 00:00:00 2001

From: Shuming Fan shumingf@realtek.com Date: Wed, 16 Oct 2019 16:58:45 +0800 Subject: [PATCH] ASoC: rt1011: Read and apply r0 and temperature device property

Typically, the r0 (calibration data) and temperature were measured in the factory. This information is written into the non-volatile area where keeps data whether factory reset or OS update. In Chromium OS case, the coreboot will read the info from VPD and create the device property for each rt1011.

Signed-off-by: Shuming Fan shumingf@realtek.com Tested-By: Cheng-Yi Chiang cychiang@chromium.org Link: https://lore.kernel.org/r/20191016085845.11672-1-shumingf@realtek.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/rt1011.c | 41 ++++++++++++++++++++++++++++++++++++++- sound/soc/codecs/rt1011.h | 1 + 2 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt1011.c b/sound/soc/codecs/rt1011.c index b927e61b32df..ad049cfddcb0 100644 --- a/sound/soc/codecs/rt1011.c +++ b/sound/soc/codecs/rt1011.c @@ -2328,8 +2328,12 @@ static void rt1011_calibration_work(struct work_struct *work) struct rt1011_priv *rt1011 = container_of(work, struct rt1011_priv, cali_work); struct snd_soc_component *component = rt1011->component; + unsigned int r0_integer, r0_factor, format;

- rt1011_calibrate(rt1011, 1); + if (rt1011->r0_calib) + rt1011_calibrate(rt1011, 0); + else + rt1011_calibrate(rt1011, 1);

/* * This flag should reset after booting. @@ -2340,6 +2344,39 @@ static void rt1011_calibration_work(struct work_struct *work)

/* initial */ rt1011_reg_init(component); + + /* Apply temperature and calibration data from device property */ + if (rt1011->temperature_calib) { + snd_soc_component_update_bits(component, + RT1011_STP_INITIAL_RESISTANCE_TEMP, 0x3ff, + (rt1011->temperature_calib << 2)); + } + + if (rt1011->r0_calib) { + rt1011->r0_reg = rt1011->r0_calib; + + format = 2147483648U; /* 2^24 * 128 */ + r0_integer = format / rt1011->r0_reg / 128; + r0_factor = ((format / rt1011->r0_reg * 100) / 128) + - (r0_integer * 100); + dev_info(component->dev, "DP r0 resistance about %d.%02d ohm, reg=0x%X\n", + r0_integer, r0_factor, rt1011->r0_reg); + + rt1011_r0_load(rt1011); + } +} + +static int rt1011_parse_dp(struct rt1011_priv *rt1011, struct device *dev) +{ + device_property_read_u32(dev, "realtek,temperature_calib", + &rt1011->temperature_calib); + device_property_read_u32(dev, "realtek,r0_calib", + &rt1011->r0_calib); + + dev_dbg(dev, "%s: r0_calib: 0x%x, temperture_calib: 0x%x", + __func__, rt1011->r0_calib, rt1011->temperature_calib); + + return 0; }

static int rt1011_i2c_probe(struct i2c_client *i2c, @@ -2356,6 +2393,8 @@ static int rt1011_i2c_probe(struct i2c_client *i2c,

i2c_set_clientdata(i2c, rt1011);

+ rt1011_parse_dp(rt1011, &i2c->dev); + rt1011->regmap = devm_regmap_init_i2c(i2c, &rt1011_regmap); if (IS_ERR(rt1011->regmap)) { ret = PTR_ERR(rt1011->regmap); diff --git a/sound/soc/codecs/rt1011.h b/sound/soc/codecs/rt1011.h index 3f7dea1191ad..68fadc15fa8c 100644 --- a/sound/soc/codecs/rt1011.h +++ b/sound/soc/codecs/rt1011.h @@ -690,6 +690,7 @@ struct rt1011_priv {

int bq_drc_set; unsigned int r0_reg, cali_done; + unsigned int r0_calib, temperature_calib; int recv_spk_mode; };