/* * MAX9768 AMP driver * * Copyright (C) 2011, 2012 by Wolfram Sang, Pengutronix e.K. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; version 2 of the License. */ #include #include #include #include #include #include #include #include #include #include /* "Registers" */ #define MAX9768_VOL 0 #define MAX9768_CTRL 3 /* Commands */ #define MAX9768_CTRL_PWM 0x15 #define MAX9768_CTRL_FILTERLESS 0x16 struct max9768 { struct regmap *regmap; int mute_gpio; int shdn_gpio; u32 flags; }; static const struct reg_default max9768_default_regs[] = { { 0, 0 }, { 3, MAX9768_CTRL_FILTERLESS}, }; static int max9768_get_gpio(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_component *c = snd_soc_kcontrol_component(kcontrol); struct max9768 *max9768 = snd_soc_component_get_drvdata(c); int val = gpio_get_value_cansleep(max9768->mute_gpio); ucontrol->value.integer.value[0] = !val; return 0; } static int max9768_set_gpio(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_component *c = snd_soc_kcontrol_component(kcontrol); struct max9768 *max9768 = snd_soc_component_get_drvdata(c); gpio_set_value_cansleep(max9768->mute_gpio, !ucontrol->value.integer.value[0]); return 0; } static const DECLARE_TLV_DB_RANGE(volume_tlv, 0, 0, TLV_DB_SCALE_ITEM(-16150, 0, 0), 1, 1, TLV_DB_SCALE_ITEM(-9280, 0, 0), 2, 2, TLV_DB_SCALE_ITEM(-9030, 0, 0), 3, 3, TLV_DB_SCALE_ITEM(-8680, 0, 0), 4, 4, TLV_DB_SCALE_ITEM(-8430, 0, 0), 5, 5, TLV_DB_SCALE_ITEM(-8080, 0, 0), 6, 6, TLV_DB_SCALE_ITEM(-7830, 0, 0), 7, 7, TLV_DB_SCALE_ITEM(-7470, 0, 0), 8, 8, TLV_DB_SCALE_ITEM(-7220, 0, 0), 9, 9, TLV_DB_SCALE_ITEM(-6870, 0, 0), 10, 10, TLV_DB_SCALE_ITEM(-6620, 0, 0), 11, 11, TLV_DB_SCALE_ITEM(-6270, 0, 0), 12, 12, TLV_DB_SCALE_ITEM(-6020, 0, 0), 13, 13, TLV_DB_SCALE_ITEM(-5670, 0, 0), 14, 14, TLV_DB_SCALE_ITEM(-5420, 0, 0), 15, 17, TLV_DB_SCALE_ITEM(-5060, 250, 0), 18, 18, TLV_DB_SCALE_ITEM(-4370, 0, 0), 19, 19, TLV_DB_SCALE_ITEM(-4210, 0, 0), 20, 20, TLV_DB_SCALE_ITEM(-3960, 0, 0), 21, 21, TLV_DB_SCALE_ITEM(-3760, 0, 0), 22, 22, TLV_DB_SCALE_ITEM(-3600, 0, 0), 23, 23, TLV_DB_SCALE_ITEM(-3340, 0, 0), 24, 24, TLV_DB_SCALE_ITEM(-3150, 0, 0), 25, 25, TLV_DB_SCALE_ITEM(-2980, 0, 0), 26, 26, TLV_DB_SCALE_ITEM(-2720, 0, 0), 27, 27, TLV_DB_SCALE_ITEM(-2520, 0, 0), 28, 30, TLV_DB_SCALE_ITEM(-2350, 190, 0), 31, 31, TLV_DB_SCALE_ITEM(-1750, 0, 0), 32, 34, TLV_DB_SCALE_ITEM(-1640, 100, 0), 35, 37, TLV_DB_SCALE_ITEM(-1310, 110, 0), 38, 39, TLV_DB_SCALE_ITEM(-990, 100, 0), 40, 40, TLV_DB_SCALE_ITEM(-710, 0, 0), 41, 41, TLV_DB_SCALE_ITEM(-600, 0, 0), 42, 42, TLV_DB_SCALE_ITEM(-500, 0, 0), 43, 43, TLV_DB_SCALE_ITEM(-340, 0, 0), 44, 44, TLV_DB_SCALE_ITEM(-190, 0, 0), 45, 45, TLV_DB_SCALE_ITEM(-50, 0, 0), 46, 46, TLV_DB_SCALE_ITEM(50, 0, 0), 47, 50, TLV_DB_SCALE_ITEM(120, 40, 0), 51, 57, TLV_DB_SCALE_ITEM(290, 50, 0), 58, 58, TLV_DB_SCALE_ITEM(650, 0, 0), 59, 62, TLV_DB_SCALE_ITEM(700, 60, 0), 63, 63, TLV_DB_SCALE_ITEM(950, 0, 0) ); static const struct snd_kcontrol_new max9768_volume[] = { SOC_SINGLE_TLV("Playback Volume", MAX9768_VOL, 0, 63, 0, volume_tlv), }; static const struct snd_kcontrol_new max9768_mute[] = { SOC_SINGLE_BOOL_EXT("Playback Switch", 0, max9768_get_gpio, max9768_set_gpio), }; static const struct snd_soc_dapm_widget max9768_dapm_widgets[] = { SND_SOC_DAPM_INPUT("IN"), SND_SOC_DAPM_OUTPUT("OUT+"), SND_SOC_DAPM_OUTPUT("OUT-"), }; static const struct snd_soc_dapm_route max9768_dapm_routes[] = { { "OUT+", NULL, "IN" }, { "OUT-", NULL, "IN" }, }; static int max9768_probe(struct snd_soc_component *component) { struct max9768 *max9768 = snd_soc_component_get_drvdata(component); int ret; if (max9768->flags & MAX9768_FLAG_CLASSIC_PWM) { ret = regmap_write(max9768->regmap, MAX9768_CTRL, MAX9768_CTRL_PWM); if (ret) return ret; } if (gpio_is_valid(max9768->mute_gpio)) { ret = snd_soc_add_component_controls(component, max9768_mute, ARRAY_SIZE(max9768_mute)); if (ret) return ret; } return 0; } static struct snd_soc_component_driver max9768_component_driver = { .probe = max9768_probe, .controls = max9768_volume, .num_controls = ARRAY_SIZE(max9768_volume), .dapm_widgets = max9768_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(max9768_dapm_widgets), .dapm_routes = max9768_dapm_routes, .num_dapm_routes = ARRAY_SIZE(max9768_dapm_routes), }; static const struct regmap_config max9768_i2c_regmap_config = { .reg_bits = 2, .val_bits = 6, .max_register = 3, .reg_defaults = max9768_default_regs, .num_reg_defaults = ARRAY_SIZE(max9768_default_regs), .cache_type = REGCACHE_RBTREE, }; static int max9768_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct max9768 *max9768; struct max9768_pdata *pdata = client->dev.platform_data; int err; max9768 = devm_kzalloc(&client->dev, sizeof(*max9768), GFP_KERNEL); if (!max9768) return -ENOMEM; if (pdata) { /* Mute on powerup to avoid clicks */ err = devm_gpio_request_one(&client->dev, pdata->mute_gpio, GPIOF_INIT_HIGH, "MAX9768 Mute"); max9768->mute_gpio = err ?: pdata->mute_gpio; /* Activate chip by releasing shutdown, enables I2C */ err = devm_gpio_request_one(&client->dev, pdata->shdn_gpio, GPIOF_INIT_HIGH, "MAX9768 Shutdown"); max9768->shdn_gpio = err ?: pdata->shdn_gpio; max9768->flags = pdata->flags; } else { max9768->shdn_gpio = -EINVAL; max9768->mute_gpio = -EINVAL; } i2c_set_clientdata(client, max9768); max9768->regmap = devm_regmap_init_i2c(client, &max9768_i2c_regmap_config); if (IS_ERR(max9768->regmap)) return PTR_ERR(max9768->regmap); return devm_snd_soc_register_component(&client->dev, &max9768_component_driver, NULL, 0); } static const struct i2c_device_id max9768_i2c_id[] = { { "max9768", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, max9768_i2c_id); static struct i2c_driver max9768_i2c_driver = { .driver = { .name = "max9768", }, .probe = max9768_i2c_probe, .id_table = max9768_i2c_id, }; module_i2c_driver(max9768_i2c_driver); MODULE_AUTHOR("Wolfram Sang "); MODULE_DESCRIPTION("ASoC MAX9768 amplifier driver"); MODULE_LICENSE("GPL v2"); after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'sound/soc/fsl/fsl_spdif.h')