diff options
author | Jens Axboe <axboe@kernel.dk> | 2018-02-07 15:54:20 -0700 |
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committer | Jens Axboe <axboe@kernel.dk> | 2018-02-07 15:54:20 -0700 |
commit | 61a695184fcc8f225327206b88320279dd8684af (patch) | |
tree | 6cbda2b0e7de94ebad95072d17cc0aa82c9d8ab3 /drivers/platform/x86/intel_chtdc_ti_pwrbtn.c | |
parent | 9e05c864993c5442227f83ae1694a737d7a102ed (diff) | |
parent | 581e400ff935d34d95811258586128bf11baef15 (diff) |
Merge branch 'master' into test
* master: (1190 commits)
ASoC: stm32: add of dependency for stm32 drivers
ASoC: mt8173-rt5650: fix child-node lookup
ASoC: dapm: fix debugfs read using path->connected
platform/x86: samsung-laptop: Re-use DEFINE_SHOW_ATTRIBUTE() macro
platform/x86: ideapad-laptop: Re-use DEFINE_SHOW_ATTRIBUTE() macro
platform/x86: dell-laptop: Re-use DEFINE_SHOW_ATTRIBUTE() macro
seq_file: Introduce DEFINE_SHOW_ATTRIBUTE() helper macro
Documentation/sysctl/user.txt: fix typo
MAINTAINERS: update ARM/QUALCOMM SUPPORT patterns
MAINTAINERS: update various PALM patterns
MAINTAINERS: update "ARM/OXNAS platform support" patterns
MAINTAINERS: update Cortina/Gemini patterns
MAINTAINERS: remove ARM/CLKDEV SUPPORT file pattern
MAINTAINERS: remove ANDROID ION pattern
mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors
mm: docs: fix parameter names mismatch
mm: docs: fixup punctuation
pipe: read buffer limits atomically
pipe: simplify round_pipe_size()
pipe: reject F_SETPIPE_SZ with size over UINT_MAX
...
Diffstat (limited to 'drivers/platform/x86/intel_chtdc_ti_pwrbtn.c')
-rw-r--r-- | drivers/platform/x86/intel_chtdc_ti_pwrbtn.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel_chtdc_ti_pwrbtn.c b/drivers/platform/x86/intel_chtdc_ti_pwrbtn.c new file mode 100644 index 000000000000..38b8e7cfe88c --- /dev/null +++ b/drivers/platform/x86/intel_chtdc_ti_pwrbtn.c @@ -0,0 +1,93 @@ +/* + * Power-button driver for Dollar Cove TI PMIC + * Copyright (C) 2014 Intel Corp + * Copyright (c) 2017 Takashi Iwai <tiwai@suse.de> + */ + +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <linux/mfd/intel_soc_pmic.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_wakeirq.h> +#include <linux/slab.h> + +#define CHTDC_TI_SIRQ_REG 0x3 +#define SIRQ_PWRBTN_REL BIT(0) + +static irqreturn_t chtdc_ti_pwrbtn_interrupt(int irq, void *dev_id) +{ + struct input_dev *input = dev_id; + struct device *dev = input->dev.parent; + struct regmap *regmap = dev_get_drvdata(dev); + int state; + + if (!regmap_read(regmap, CHTDC_TI_SIRQ_REG, &state)) { + dev_dbg(dev, "SIRQ_REG=0x%x\n", state); + input_report_key(input, KEY_POWER, !(state & SIRQ_PWRBTN_REL)); + input_sync(input); + } + + return IRQ_HANDLED; +} + +static int chtdc_ti_pwrbtn_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct intel_soc_pmic *pmic = dev_get_drvdata(dev->parent); + struct input_dev *input; + int irq, err; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + input = devm_input_allocate_device(dev); + if (!input) + return -ENOMEM; + input->name = pdev->name; + input->phys = "power-button/input0"; + input->id.bustype = BUS_HOST; + input_set_capability(input, EV_KEY, KEY_POWER); + err = input_register_device(input); + if (err) + return err; + + dev_set_drvdata(dev, pmic->regmap); + + err = devm_request_threaded_irq(dev, irq, NULL, + chtdc_ti_pwrbtn_interrupt, + 0, KBUILD_MODNAME, input); + if (err) + return err; + + device_init_wakeup(dev, true); + dev_pm_set_wake_irq(dev, irq); + return 0; +} + +static int chtdc_ti_pwrbtn_remove(struct platform_device *pdev) +{ + dev_pm_clear_wake_irq(&pdev->dev); + device_init_wakeup(&pdev->dev, false); + return 0; +} + +static const struct platform_device_id chtdc_ti_pwrbtn_id_table[] = { + { .name = "chtdc_ti_pwrbtn" }, + {}, +}; +MODULE_DEVICE_TABLE(platform, chtdc_ti_pwrbtn_id_table); + +static struct platform_driver chtdc_ti_pwrbtn_driver = { + .driver = { + .name = KBUILD_MODNAME, + }, + .probe = chtdc_ti_pwrbtn_probe, + .remove = chtdc_ti_pwrbtn_remove, + .id_table = chtdc_ti_pwrbtn_id_table, +}; +module_platform_driver(chtdc_ti_pwrbtn_driver); + +MODULE_DESCRIPTION("Power-button driver for Dollar Cove TI PMIC"); +MODULE_LICENSE("GPL v2"); |