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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 62c91766-37f4-495b-0f16-08db0efded72 X-MS-Exchange-CrossTenant-AuthSource: AS8PR04MB8642.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Feb 2023 02:39:57.8100 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: haIVytBqmuta7kORlW5yDgfeCl1lmhrw1lco84R+jfljiiWxkbbBso5+LGnMqQU21qS7AtEZzKiHI/LKx5AdFg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAXPR04MB8975 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230214_184001_484139_6BED2830 X-CRM114-Status: GOOD ( 31.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The ON/OFF logic inside the BBNSM allows for connecting directly into a PMIC or other voltage regulator device. The module has an button input signal and a wakeup request input signal. It also has two interrupts (set_pwr_off_irq and set_pwr_on_irq) and an active-low PMIC enable (pmic_en_b) output. Add the power key support for the ON/OFF button function found in BBNSM module. Signed-off-by: Jacky Bai Reviewed-by: Peng Fan --- - v5 changes: - move the bbnsm pwr key driver to input/misc as Dmitry suggested - replace del_timer_sync with timer_shutdown_sync() - minor refine for error log string - v4 changes: - update the compatible string to align with binding file - fix the device_property_read_u32 as stated in v2. - add back the 'dev_warn' for 'dev_pm_set_wake_irq' return fail. - v3 changes: - get the regmap directly from the parent node - v2 changes: - use device_property_read_u32() to read the property - clean up the goto return, return directly - sort the header file alphabetically - rename the file to add 'nxp' prefix --- drivers/input/misc/Kconfig | 11 ++ drivers/input/misc/Makefile | 1 + drivers/input/misc/nxp-bbnsm-pwrkey.c | 192 ++++++++++++++++++++++++++ 3 files changed, 204 insertions(+) create mode 100644 drivers/input/misc/nxp-bbnsm-pwrkey.c diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 5c2d0c06d2a5..81a54a59e13c 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -119,6 +119,17 @@ config INPUT_ATMEL_CAPTOUCH To compile this driver as a module, choose M here: the module will be called atmel_captouch. +config INPUT_BBNSM_PWRKEY + tristate "NXP BBNSM Power Key Driver" + depends on ARCH_MXC || COMPILE_TEST + depends on OF + help + This is the bbnsm powerkey driver for the NXP i.MX application + processors. + + To compile this driver as a module, choose M here; the + module will be called bbnsm_pwrkey. + config INPUT_BMA150 tristate "BMA150/SMB380 acceleration sensor support" depends on I2C diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 61949263300d..04296a4abe8e 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_INPUT_ATC260X_ONKEY) += atc260x-onkey.o obj-$(CONFIG_INPUT_ATI_REMOTE2) += ati_remote2.o obj-$(CONFIG_INPUT_ATLAS_BTNS) += atlas_btns.o obj-$(CONFIG_INPUT_ATMEL_CAPTOUCH) += atmel_captouch.o +obj-$(CONFIG_INPUT_BBNSM_PWRKEY) += nxp-bbnsm-pwrkey.o obj-$(CONFIG_INPUT_BMA150) += bma150.o obj-$(CONFIG_INPUT_CM109) += cm109.o obj-$(CONFIG_INPUT_CMA3000) += cma3000_d0x.o diff --git a/drivers/input/misc/nxp-bbnsm-pwrkey.c b/drivers/input/misc/nxp-bbnsm-pwrkey.c new file mode 100644 index 000000000000..737e202ec513 --- /dev/null +++ b/drivers/input/misc/nxp-bbnsm-pwrkey.c @@ -0,0 +1,192 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Copyright 2022 NXP. + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define BBNSM_CTRL 0x8 +#define BBNSM_INT_EN 0x10 +#define BBNSM_EVENTS 0x14 +#define BBNSM_PAD_CTRL 0x24 + +#define BBNSM_BTN_PRESSED BIT(7) +#define BBNSM_PWR_ON BIT(6) +#define BBNSM_BTN_OFF BIT(5) +#define BBNSM_EMG_OFF BIT(4) +#define BBNSM_PWRKEY_EVENTS (BBNSM_PWR_ON | BBNSM_BTN_OFF | BBNSM_EMG_OFF) +#define BBNSM_DP_EN BIT(24) + +#define DEBOUNCE_TIME 30 +#define REPEAT_INTERVAL 60 + +struct bbnsm_pwrkey { + struct regmap *regmap; + int irq; + int keycode; + int keystate; /* 1:pressed */ + struct timer_list check_timer; + struct input_dev *input; +}; + +static void bbnsm_pwrkey_check_for_events(struct timer_list *t) +{ + struct bbnsm_pwrkey *bbnsm = from_timer(bbnsm, t, check_timer); + struct input_dev *input = bbnsm->input; + u32 state; + + regmap_read(bbnsm->regmap, BBNSM_EVENTS, &state); + + state = state & BBNSM_BTN_PRESSED ? 1 : 0; + + /* only report new event if status changed */ + if (state ^ bbnsm->keystate) { + bbnsm->keystate = state; + input_event(input, EV_KEY, bbnsm->keycode, state); + input_sync(input); + pm_relax(bbnsm->input->dev.parent); + } + + /* repeat check if pressed long */ + if (state) { + mod_timer(&bbnsm->check_timer, + jiffies + msecs_to_jiffies(REPEAT_INTERVAL)); + } +} + +static irqreturn_t bbnsm_pwrkey_interrupt(int irq, void *dev_id) +{ + struct platform_device *pdev = dev_id; + struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev); + struct input_dev *input = bbnsm->input; + u32 event; + + regmap_read(bbnsm->regmap, BBNSM_EVENTS, &event); + if (event & BBNSM_BTN_OFF) + mod_timer(&bbnsm->check_timer, jiffies + msecs_to_jiffies(DEBOUNCE_TIME)); + else + return IRQ_NONE; + + pm_wakeup_event(input->dev.parent, 0); + + /* clear PWR OFF */ + regmap_write(bbnsm->regmap, BBNSM_EVENTS, BBNSM_BTN_OFF); + + return IRQ_HANDLED; +} + +static void bbnsm_pwrkey_act(void *pdata) +{ + struct bbnsm_pwrkey *bbnsm = pdata; + + timer_shutdown_sync(&bbnsm->check_timer); +} + +static int bbnsm_pwrkey_probe(struct platform_device *pdev) +{ + struct bbnsm_pwrkey *bbnsm; + struct input_dev *input; + struct device_node *np = pdev->dev.of_node; + int error; + + bbnsm = devm_kzalloc(&pdev->dev, sizeof(*bbnsm), GFP_KERNEL); + if (!bbnsm) + return -ENOMEM; + + bbnsm->regmap = syscon_node_to_regmap(np->parent); + if (IS_ERR(bbnsm->regmap)) { + dev_err(&pdev->dev, "bbnsm pwerkey get regmap failed\n"); + return PTR_ERR(bbnsm->regmap); + } + + if (device_property_read_u32(&pdev->dev, "linux,code", &bbnsm->keycode)) { + bbnsm->keycode = KEY_POWER; + dev_warn(&pdev->dev, "key code is not specified, using default KEY_POWER\n"); + } + + bbnsm->irq = platform_get_irq(pdev, 0); + if (bbnsm->irq < 0) + return -EINVAL; + + /* config the BBNSM power related register */ + regmap_update_bits(bbnsm->regmap, BBNSM_CTRL, BBNSM_DP_EN, BBNSM_DP_EN); + + /* clear the unexpected interrupt before driver ready */ + regmap_write_bits(bbnsm->regmap, BBNSM_EVENTS, BBNSM_PWRKEY_EVENTS, BBNSM_PWRKEY_EVENTS); + + timer_setup(&bbnsm->check_timer, bbnsm_pwrkey_check_for_events, 0); + + input = devm_input_allocate_device(&pdev->dev); + if (!input) { + dev_err(&pdev->dev, "failed to allocate the input device\n"); + return -ENOMEM; + } + + input->name = pdev->name; + input->phys = "bbnsm-pwrkey/input0"; + input->id.bustype = BUS_HOST; + + input_set_capability(input, EV_KEY, bbnsm->keycode); + + /* input customer action to cancel release timer */ + error = devm_add_action(&pdev->dev, bbnsm_pwrkey_act, bbnsm); + if (error) { + dev_err(&pdev->dev, "failed to register remove action\n"); + return error; + } + + bbnsm->input = input; + platform_set_drvdata(pdev, bbnsm); + + error = devm_request_irq(&pdev->dev, bbnsm->irq, bbnsm_pwrkey_interrupt, + IRQF_SHARED, pdev->name, pdev); + if (error) { + dev_err(&pdev->dev, "interrupt not available.\n"); + return error; + } + + error = input_register_device(input); + if (error < 0) { + dev_err(&pdev->dev, "failed to register input device\n"); + return error; + } + + device_init_wakeup(&pdev->dev, true); + error = dev_pm_set_wake_irq(&pdev->dev, bbnsm->irq); + if (error) + dev_warn(&pdev->dev, "irq wake enable failed.\n"); + + return 0; +} + +static const struct of_device_id bbnsm_pwrkey_ids[] = { + { .compatible = "nxp,imx93-bbnsm-pwrkey" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, bbnsm_pwrkey_ids); + +static struct platform_driver bbnsm_pwrkey_driver = { + .driver = { + .name = "bbnsm_pwrkey", + .of_match_table = bbnsm_pwrkey_ids, + }, + .probe = bbnsm_pwrkey_probe, +}; +module_platform_driver(bbnsm_pwrkey_driver); + +MODULE_AUTHOR("Jacky Bai "); +MODULE_DESCRIPTION("NXP bbnsm power key Driver"); +MODULE_LICENSE("GPL");