From 0a3badd141f78535315cca9ff5062a7ebf414281 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 18 Jul 2018 22:55:38 +0200 Subject: [PATCH] ASoC: Intel: bytcr_rt5651: Fix using the wrong GPIO for the ext-amp on some boards Some boards have I2cSerialBusV2, GpioIo, GpioInt as ACPI resources, other boards may have I2cSerialBusV2, GpioInt, GpioIo instead. We want the GpioIo one for the ext-amp-enable-gpio. So far we've been assuming that the GpioIo one always comes first, this commit adds code to detect which one comes first and to add the right gpio-mapping. This fixes sound not working on the Vios LTH17 laptop. Signed-off-by: Hans de Goede Acked-by: Pierre-Louis Bossart Signed-off-by: Mark Brown --- sound/soc/intel/boards/bytcr_rt5651.c | 69 +++++++++++++++++++++++++-- 1 file changed, 65 insertions(+), 4 deletions(-) diff --git a/sound/soc/intel/boards/bytcr_rt5651.c b/sound/soc/intel/boards/bytcr_rt5651.c index b687043c8425..601e47c33ba8 100644 --- a/sound/soc/intel/boards/bytcr_rt5651.c +++ b/sound/soc/intel/boards/bytcr_rt5651.c @@ -747,13 +747,74 @@ static const struct x86_cpu_id cherrytrail_cpu_ids[] = { {} }; -static const struct acpi_gpio_params ext_amp_enable_gpios = { 0, 0, false }; +static const struct acpi_gpio_params first_gpio = { 0, 0, false }; +static const struct acpi_gpio_params second_gpio = { 1, 0, false }; -static const struct acpi_gpio_mapping byt_rt5651_gpios[] = { - { "ext-amp-enable-gpios", &ext_amp_enable_gpios, 1 }, +static const struct acpi_gpio_mapping byt_rt5651_amp_en_first[] = { + { "ext-amp-enable-gpios", &first_gpio, 1 }, { }, }; +static const struct acpi_gpio_mapping byt_rt5651_amp_en_second[] = { + { "ext-amp-enable-gpios", &second_gpio, 1 }, + { }, +}; + +/* + * Some boards have I2cSerialBusV2, GpioIo, GpioInt as ACPI resources, other + * boards may have I2cSerialBusV2, GpioInt, GpioIo instead. We want the + * GpioIo one for the ext-amp-enable-gpio and both count for the index in + * acpi_gpio_params index. So we have 2 different mappings and the code + * below figures out which one to use. + */ +struct byt_rt5651_acpi_resource_data { + int gpio_count; + int gpio_int_idx; +}; + +static int snd_byt_rt5651_acpi_resource(struct acpi_resource *ares, void *arg) +{ + struct byt_rt5651_acpi_resource_data *data = arg; + + if (ares->type != ACPI_RESOURCE_TYPE_GPIO) + return 0; + + if (ares->data.gpio.connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) + data->gpio_int_idx = data->gpio_count; + + data->gpio_count++; + return 0; +} + +static void snd_byt_rt5651_mc_add_amp_en_gpio_mapping(struct device *codec) +{ + struct byt_rt5651_acpi_resource_data data = { 0, -1 }; + LIST_HEAD(resources); + int ret; + + ret = acpi_dev_get_resources(ACPI_COMPANION(codec), &resources, + snd_byt_rt5651_acpi_resource, &data); + if (ret < 0) { + dev_warn(codec, "Failed to get ACPI resources, not adding external amplifier GPIO mapping\n"); + return; + } + + /* All info we need is gathered during the walk */ + acpi_dev_free_resource_list(&resources); + + switch (data.gpio_int_idx) { + case 0: + devm_acpi_dev_add_driver_gpios(codec, byt_rt5651_amp_en_second); + break; + case 1: + devm_acpi_dev_add_driver_gpios(codec, byt_rt5651_amp_en_first); + break; + default: + dev_warn(codec, "Unknown GpioInt index %d, not adding external amplifier GPIO mapping\n", + data.gpio_int_idx); + } +} + struct acpi_chan_package { /* ACPICA seems to require 64 bit integers */ u64 aif_value; /* 1: AIF1, 2: AIF2 */ u64 mclock_value; /* usually 25MHz (0x17d7940), ignored */ @@ -876,7 +937,7 @@ static int snd_byt_rt5651_mc_probe(struct platform_device *pdev) /* Cherry Trail devices use an external amplifier enable gpio */ if (x86_match_cpu(cherrytrail_cpu_ids)) { - devm_acpi_dev_add_driver_gpios(codec_dev, byt_rt5651_gpios); + snd_byt_rt5651_mc_add_amp_en_gpio_mapping(codec_dev); priv->ext_amp_gpio = devm_fwnode_get_index_gpiod_from_child( &pdev->dev, "ext-amp-enable", 0, codec_dev->fwnode, -- 2.25.1