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Add a helper function to process HID events from an SDCA device. Signed-off-by: Charles Keepax --- include/sound/sdca_hid.h | 13 +++++++-- sound/soc/sdca/sdca_hid.c | 46 ++++++++++++++++++++++++++++++++ sound/soc/sdca/sdca_interrupts.c | 28 +++++++++++++++++++ 3 files changed, 85 insertions(+), 2 deletions(-) diff --git a/include/sound/sdca_hid.h b/include/sound/sdca_hid.h index 3a155835e035e..18bebbe428c9f 100644 --- a/include/sound/sdca_hid.h +++ b/include/sound/sdca_hid.h @@ -8,13 +8,17 @@ #ifndef __SDCA_HID_H__ #define __SDCA_HID_H__ -#include -#include +struct device; +struct sdw_slave; + +struct sdca_entity; +struct sdca_interrupt; #if IS_ENABLED(CONFIG_SND_SOC_SDCA_HID) int sdca_add_hid_device(struct device *dev, struct sdw_slave *sdw, struct sdca_entity *entity); +int sdca_hid_process_report(struct sdca_interrupt *interrupt); #else @@ -24,6 +28,11 @@ static inline int sdca_add_hid_device(struct device *dev, struct sdw_slave *sdw, return 0; } +static inline int sdca_hid_process_report(struct sdca_interrupt *interrupt) +{ + return 0; +} + #endif #endif /* __SDCA_HID_H__ */ diff --git a/sound/soc/sdca/sdca_hid.c b/sound/soc/sdca/sdca_hid.c index 53dad1a524d4b..ad53207b0d62b 100644 --- a/sound/soc/sdca/sdca_hid.c +++ b/sound/soc/sdca/sdca_hid.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -17,6 +18,8 @@ #include #include #include +#include +#include static int sdwhid_parse(struct hid_device *hid) { @@ -121,5 +124,48 @@ int sdca_add_hid_device(struct device *dev, struct sdw_slave *sdw, } EXPORT_SYMBOL_NS(sdca_add_hid_device, "SND_SOC_SDCA"); +/** + * sdca_hid_process_report - read a HID event from the device and report + * @interrupt: Pointer to the SDCA interrupt information structure. + * + * Return: Zero on success, and a negative error code on failure. + */ +int sdca_hid_process_report(struct sdca_interrupt *interrupt) +{ + struct device *dev = interrupt->dev; + struct hid_device *hid = interrupt->entity->hide.hid; + void *val __free(kfree) = NULL; + int len, ret; + + ret = sdca_ump_get_owner_host(dev, interrupt->function_regmap, + interrupt->function, interrupt->entity, + interrupt->control); + if (ret) + return ret; + + len = sdca_ump_read_message(dev, interrupt->device_regmap, + interrupt->function_regmap, + interrupt->function, interrupt->entity, + SDCA_CTL_HIDE_HIDTX_MESSAGEOFFSET, + SDCA_CTL_HIDE_HIDTX_MESSAGELENGTH, &val); + if (len < 0) + return len; + + ret = sdca_ump_set_owner_device(dev, interrupt->function_regmap, + interrupt->function, interrupt->entity, + interrupt->control); + if (ret) + return ret; + + ret = hid_input_report(hid, HID_INPUT_REPORT, val, len, true); + if (ret < 0) { + dev_err(dev, "failed to report hid event: %d\n", ret); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_NS(sdca_hid_process_report, "SND_SOC_SDCA"); + MODULE_LICENSE("Dual BSD/GPL"); MODULE_DESCRIPTION("SDCA HID library"); diff --git a/sound/soc/sdca/sdca_interrupts.c b/sound/soc/sdca/sdca_interrupts.c index ed2a06a1b719f..386a15ebf1093 100644 --- a/sound/soc/sdca/sdca_interrupts.c +++ b/sound/soc/sdca/sdca_interrupts.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -247,6 +248,29 @@ static irqreturn_t detected_mode_handler(int irq, void *data) return irqret; } +static irqreturn_t hid_handler(int irq, void *data) +{ + struct sdca_interrupt *interrupt = data; + struct device *dev = interrupt->dev; + irqreturn_t irqret = IRQ_NONE; + int ret; + + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "failed to resume for hid: %d\n", ret); + goto error; + } + + ret = sdca_hid_process_report(interrupt); + if (ret) + goto error; + + irqret = IRQ_HANDLED; +error: + pm_runtime_put(dev); + return irqret; +} + static irqreturn_t fdl_owner_handler(int irq, void *data) { struct sdca_interrupt *interrupt = data; @@ -528,6 +552,10 @@ int sdca_irq_populate(struct sdca_function_data *function, handler = fdl_owner_handler; } break; + case SDCA_ENTITY_TYPE_HIDE: + if (control->sel == SDCA_CTL_HIDE_HIDTX_CURRENTOWNER) + handler = hid_handler; + break; default: break; } -- 2.47.2