From: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx> Read in optional codec-specific properties from the device tree. The platform_data structure is not populated when using device trees. This change parses optional dts properties to populate it. - wlf,in1l-as-dmicdat1 - wlf,in1r-as-dmicdat2 - wlf,gpio-cfg - wlf,mic-cfg - wlf,drc-cfg-regs - wlf,drc-cfg-names - wlf,retune-mobile-cfg-regs - wlf,retune-mobile-cfg-names - wlf,retune-mobile-cfg-rates Datasheet: https://statics.cirrus.com/pubs/proDatasheet/WM8904_Rev4.1.pdf Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx> Signed-off-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> --- include/sound/wm8904.h | 3 + sound/soc/codecs/wm8904.c | 189 +++++++++++++++++++++++++++++++++++++- 2 files changed, 191 insertions(+), 1 deletion(-) diff --git a/include/sound/wm8904.h b/include/sound/wm8904.h index 88ac1870510e..8b2c16b524f7 100644 --- a/include/sound/wm8904.h +++ b/include/sound/wm8904.h @@ -151,6 +151,9 @@ struct wm8904_pdata { int num_retune_mobile_cfgs; struct wm8904_retune_mobile_cfg *retune_mobile_cfgs; + bool in1l_as_dmicdat1; + bool in1r_as_dmicdat2; + u32 gpio_cfg[WM8904_GPIO_REGS]; u32 mic_cfg[WM8904_MIC_REGS]; }; diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c index 2082ff12d336..899ef6679f7e 100644 --- a/sound/soc/codecs/wm8904.c +++ b/sound/soc/codecs/wm8904.c @@ -2168,6 +2168,184 @@ static const struct of_device_id wm8904_of_match[] = { MODULE_DEVICE_TABLE(of, wm8904_of_match); #endif +/** + * wm8904_read_cfg_reg_arr() - Reads a subarray from a DT u16 array + * + * @np: pointer to the device_node struct + * @regs_property: DT property of interest + * @size: size of subarrays within the array + * @idx: index of the subarray of interest + * @out: output + * + * Helper to read a subarray from a DT uint16-array, + * divided into equally sized arrays of size `size` + * + * Subset starts at `idx * size` and is of size `size` + * + * Return: 0 on success, negative error code otherwise + */ +static int wm8904_read_cfg_reg_arr(const struct device_node *np, + const char * const regs_property, + int size, int idx, + u16 * const out) +{ + int i, offset, ret; + + offset = idx * size; + + for (i = 0; i < size; i++) { + ret = of_property_read_u16_index(np, regs_property, i + offset, &out[i]); + if (ret) + return ret; + } + return 0; +} + +static int wm8904_parse_retune_cfg_regs(const struct device_node *np, + struct wm8904_pdata *pdata, int cfg_idx) +{ + return wm8904_read_cfg_reg_arr(np, "wlf,retune-mobile-cfg-regs", + WM8904_EQ_REGS, cfg_idx, + &pdata->retune_mobile_cfgs[cfg_idx].regs[0]); +} + +static int wm8904_parse_drc_cfg_regs(const struct device_node *np, + struct wm8904_pdata *pdata, int cfg_idx) +{ + return wm8904_read_cfg_reg_arr(np, "wlf,drc-cfg-regs", + WM8904_DRC_REGS, cfg_idx, + &pdata->drc_cfgs[cfg_idx].regs[0]); +} + +static int wm8904_parse_drc_cfg_from_of(struct i2c_client *i2c, + struct wm8904_pdata *pdata) +{ + const struct device_node *np = i2c->dev.of_node; + int i, n_cfgs; + + n_cfgs = of_property_count_strings(np, "wlf,drc-cfg-names"); + if (n_cfgs == -EINVAL) + return 0; + + if (n_cfgs <= 0) { + dev_err(&i2c->dev, "Could not get wlf,drc-cfg-names length: %d", + n_cfgs); + return n_cfgs; + } + + pdata->drc_cfgs = devm_kzalloc(&i2c->dev, + n_cfgs * sizeof(struct wm8904_drc_cfg), + GFP_KERNEL); + if (!pdata->drc_cfgs) + return -ENOMEM; + + for (i = 0; i < n_cfgs; i++) { + if (wm8904_parse_drc_cfg_regs(np, pdata, i)) { + dev_err(&i2c->dev, + "Invalid 'wlf,drc-cfg-regs[%i,:]'\n", i); + return -EINVAL; + } + + if (of_property_read_string_index(np, "wlf,drc-cfg-names", i, + &pdata->drc_cfgs[i].name)) { + dev_err(&i2c->dev, + "Invalid 'wlf,drc-cfg-names[%i]'\n", i); + return -EINVAL; + } + } + + pdata->num_drc_cfgs = n_cfgs; + return 0; +} + +static int wm8904_parse_retune_cfg_from_of(struct i2c_client *i2c, + struct wm8904_pdata *pdata) +{ + const struct device_node *np = i2c->dev.of_node; + int i, n_cfgs; + + n_cfgs = of_property_count_strings(np, "wlf,retune-mobile-cfg-names"); + if (n_cfgs == -EINVAL) + return 0; + + if (n_cfgs <= 0) { + dev_err(&i2c->dev, + "Could not get wlf,retune-mobile-cfg-names length: %d", + n_cfgs); + return n_cfgs; + } + + pdata->retune_mobile_cfgs = devm_kzalloc(&i2c->dev, + n_cfgs * sizeof(struct wm8904_retune_mobile_cfg), + GFP_KERNEL); + if (!pdata->retune_mobile_cfgs) + return -ENOMEM; + + for (i = 0; i < n_cfgs; i++) { + if (wm8904_parse_retune_cfg_regs(np, pdata, i)) { + dev_err(&i2c->dev, + "Invalid 'wlf,retune-mobile-cfg-regs[%i,:]'\n", i); + return -EINVAL; + } + + if (of_property_read_u32_index(np, "wlf,retune-mobile-cfg-rates", i, + &pdata->retune_mobile_cfgs[i].rate)) { + dev_err(&i2c->dev, + "Invalid 'wlf,retune-mobile-cfg-rates[%i]'\n", i); + return -EINVAL; + } + + if (of_property_read_string_index(np, "wlf,retune-mobile-cfg-names", i, + &pdata->drc_cfgs[i].name)) { + dev_err(&i2c->dev, + "Invalid 'wlf,retune-mobile-cfg-names[%i]'\n", i); + return -EINVAL; + } + } + + pdata->num_retune_mobile_cfgs = n_cfgs; + return 0; +} + +static int wm8904_set_pdata_from_of(struct i2c_client *i2c, + struct wm8904_priv *wm8904) +{ + const struct device_node *np = i2c->dev.of_node; + struct wm8904_pdata *pdata; + int ret, i; + + pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + pdata->in1l_as_dmicdat1 = + of_property_read_bool(np, "wlf,in1l-as-dmicdat1"); + + pdata->in1r_as_dmicdat2 = + of_property_read_bool(np, "wlf,in1r-as-dmicdat2"); + + /* If absent, default to 0xFFFF for GPIO config (i.e.: don't set) */ + for (i = 0; i < WM8904_GPIO_REGS; i++) + pdata->gpio_cfg[i] = 0xFFFF; + + of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_cfg, + ARRAY_SIZE(pdata->gpio_cfg)); + + of_property_read_u32_array(np, "wlf,mic-cfg", pdata->mic_cfg, + ARRAY_SIZE(pdata->mic_cfg)); + + ret = wm8904_parse_drc_cfg_from_of(i2c, pdata); + if (ret) + return ret; + + ret = wm8904_parse_retune_cfg_from_of(i2c, pdata); + if (ret) + return ret; + + wm8904->pdata = pdata; + return 0; +} + static const struct i2c_device_id wm8904_i2c_id[]; static int wm8904_i2c_probe(struct i2c_client *i2c) @@ -2199,7 +2377,16 @@ static int wm8904_i2c_probe(struct i2c_client *i2c) wm8904->devtype = (uintptr_t)i2c_get_match_data(i2c); i2c_set_clientdata(i2c, wm8904); - wm8904->pdata = i2c->dev.platform_data; + + if (i2c->dev.of_node) { + ret = wm8904_set_pdata_from_of(i2c, wm8904); + if (ret) { + dev_err(&i2c->dev, "Failed to set platform data from of: %d\n", ret); + return ret; + } + } else { + wm8904->pdata = i2c->dev.platform_data; + } for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++) wm8904->supplies[i].supply = wm8904_supply_names[i]; -- 2.39.5
