/* * max9877.c -- amp driver for max9877 * * Copyright (C) 2009 Samsung Electronics Co.Ltd * Author: Joonyoung Shim * * 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; either version 2 of the License, or (at your * option) any later version. * */ #include #include #include #include #include #include #include "max9877.h" static const struct reg_default max9877_regs[] = { { 0, 0x40 }, { 1, 0x00 }, { 2, 0x00 }, { 3, 0x00 }, { 4, 0x49 }, }; static const DECLARE_TLV_DB_RANGE(max9877_pgain_tlv, 0, 1, TLV_DB_SCALE_ITEM(0, 900, 0), 2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0) ); static const DECLARE_TLV_DB_RANGE(max9877_output_tlv, 0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1), 8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0), 16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0), 24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0) ); static const char *max9877_out_mode[] = { "INA -> SPK", "INA -> HP", "INA -> SPK and HP", "INB -> SPK", "INB -> HP", "INB -> SPK and HP", "INA + INB -> SPK", "INA + INB -> HP", "INA + INB -> SPK and HP", }; static const char *max9877_osc_mode[] = { "1176KHz", "1100KHz", "700KHz", }; static const struct soc_enum max9877_enum[] = { SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, 0, ARRAY_SIZE(max9877_out_mode), max9877_out_mode), SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, MAX9877_OSC_OFFSET, ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode), }; static const struct snd_kcontrol_new max9877_controls[] = { SOC_SINGLE_TLV("MAX9877 PGAINA Playback Volume", MAX9877_INPUT_MODE, 0, 2, 0, max9877_pgain_tlv), SOC_SINGLE_TLV("MAX9877 PGAINB Playback Volume", MAX9877_INPUT_MODE, 2, 2, 0, max9877_pgain_tlv), SOC_SINGLE_TLV("MAX9877 Amp Speaker Playback Volume", MAX9877_SPK_VOLUME, 0, 31, 0, max9877_output_tlv), SOC_DOUBLE_R_TLV("MAX9877 Amp HP Playback Volume", MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0, max9877_output_tlv), SOC_SINGLE("MAX9877 INB Stereo Switch", MAX9877_INPUT_MODE, 4, 1, 1), SOC_SINGLE("MAX9877 INA Stereo Switch", MAX9877_INPUT_MODE, 5, 1, 1), SOC_SINGLE("MAX9877 Zero-crossing detection Switch", MAX9877_INPUT_MODE, 6, 1, 0), SOC_SINGLE("MAX9877 Bypass Mode Switch", MAX9877_OUTPUT_MODE, 6, 1, 0), SOC_ENUM("MAX9877 Output Mode", max9877_enum[0]), SOC_ENUM("MAX9877 Oscillator Mode", max9877_enum[1]), }; static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = { SND_SOC_DAPM_INPUT("INA1"), SND_SOC_DAPM_INPUT("INA2"), SND_SOC_DAPM_INPUT("INB1"), SND_SOC_DAPM_INPUT("INB2"), SND_SOC_DAPM_INPUT("RXIN+"), SND_SOC_DAPM_INPUT("RXIN-"), SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0), SND_SOC_DAPM_OUTPUT("OUT+"), SND_SOC_DAPM_OUTPUT("OUT-"), SND_SOC_DAPM_OUTPUT("HPL"), SND_SOC_DAPM_OUTPUT("HPR"), }; static const struct snd_soc_dapm_route max9877_dapm_routes[] = { { "SHDN", NULL, "INA1" }, { "SHDN", NULL, "INA2" }, { "SHDN", NULL, "INB1" }, { "SHDN", NULL, "INB2" }, { "OUT+", NULL, "RXIN+" }, { "OUT+", NULL, "SHDN" }, { "OUT-", NULL, "SHDN" }, { "OUT-", NULL, "RXIN-" }, { "HPL", NULL, "SHDN" }, { "HPR", NULL, "SHDN" }, }; static const struct snd_soc_component_driver max9877_component_driver = { .controls = max9877_controls, .num_controls = ARRAY_SIZE(max9877_controls), .dapm_widgets = max9877_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(max9877_dapm_widgets), .dapm_routes = max9877_dapm_routes, .num_dapm_routes = ARRAY_SIZE(max9877_dapm_routes), }; static const struct regmap_config max9877_regmap = { .reg_bits = 8, .val_bits = 8, .reg_defaults = max9877_regs, .num_reg_defaults = ARRAY_SIZE(max9877_regs), .cache_type = REGCACHE_RBTREE, }; static int max9877_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct regmap *regmap; int i; regmap = devm_regmap_init_i2c(client, &max9877_regmap); if (IS_ERR(regmap)) return PTR_ERR(regmap); /* Ensure the device is in reset state */ for (i = 0; i < ARRAY_SIZE(max9877_regs); i++) regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def); return devm_snd_soc_register_component(&client->dev, &max9877_component_driver, NULL, 0); } static const struct i2c_device_id max9877_i2c_id[] = { { "max9877", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, max9877_i2c_id); static struct i2c_driver max9877_i2c_driver = { .driver = { .name = "max9877", }, .probe = max9877_i2c_probe, .id_table = max9877_i2c_id, }; module_i2c_driver(max9877_i2c_driver); MODULE_DESCRIPTION("ASoC MAX9877 amp driver"); MODULE_AUTHOR("Joonyoung Shim "); MODULE_LICENSE("GPL"); pt>
authorMarc Zyngier <marc.zyngier@arm.com>2017-01-17 16:00:48 +0000
committerThomas Gleixner <tglx@linutronix.de>2017-01-30 15:18:56 +0100
commit08d85f3ea99f1eeafc4e8507936190e86a16ee8c (patch)
tree410bb1acd0cd7dcfaad37ae7b63ff243b7fa4bee /include/math-emu/op-4.h
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
irqdomain: Avoid activating interrupts more than once
Since commit f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early"), we can end-up activating a PCI/MSI twice (once at allocation time, and once at startup time). This is normally of no consequences, except that there is some HW out there that may misbehave if activate is used more than once (the GICv3 ITS, for example, uses the activate callback to issue the MAPVI command, and the architecture spec says that "If there is an existing mapping for the EventID-DeviceID combination, behavior is UNPREDICTABLE"). While this could be worked around in each individual driver, it may make more sense to tackle the issue at the core level. In order to avoid getting in that situation, let's have a per-interrupt flag to remember if we have already activated that interrupt or not. Fixes: f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early") Reported-and-tested-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484668848-24361-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/math-emu/op-4.h')