diff options
Diffstat (limited to 'drivers/input/misc/ab8500-accdet.c')
| -rw-r--r-- | drivers/input/misc/ab8500-accdet.c | 1164 |
1 files changed, 61 insertions, 1103 deletions
diff --git a/drivers/input/misc/ab8500-accdet.c b/drivers/input/misc/ab8500-accdet.c index bc14143d1b6..aa93aa0efc2 100644 --- a/drivers/input/misc/ab8500-accdet.c +++ b/drivers/input/misc/ab8500-accdet.c @@ -11,30 +11,16 @@ * by the Free Software Foundation. */ -#include <linux/module.h> /* Needed by all modules */ -#include <linux/kernel.h> /* Needed for KERN_INFO */ -#include <linux/init.h> /* Needed for the macros */ -#include <linux/workqueue.h> #include <linux/delay.h> -#include <linux/jiffies.h> -#include <linux/slab.h> -#include <linux/input.h> -#include <sound/soc.h> -#include <sound/jack.h> -#include <linux/platform_device.h> -#include <linux/regulator/consumer.h> +#include <linux/interrupt.h> #include <linux/mfd/ab8500.h> #include <linux/mfd/abx500.h> +#include <linux/platform_device.h> #include <linux/mfd/ab8500/gpadc.h> #include <linux/mfd/ab8500/gpio.h> #include <linux/gpio.h> -#include <linux/switch.h> -#include <mach/ab8500-accdet.h> -#ifdef CONFIG_SND_SOC_UX500_AB8500 -#include <sound/ux500_ab8500.h> -#else -#define ux500_ab8500_jack_report(i) -#endif +#include <linux/err.h> +#include <mach/abx500-accdet.h> #define MAX_DET_COUNT 10 #define MAX_VOLT_DIFF 30 @@ -83,292 +69,9 @@ #define ACCESSORY_OPENCABLE_DET_VOL_MIN 1730 #define ACCESSORY_OPENCABLE_DET_VOL_MAX 2150 -/* Macros */ - -/* - * Conviniency macros to check jack characteristics. - */ -#define jack_supports_mic(type) \ - (type == JACK_TYPE_HEADSET || type == JACK_TYPE_CARKIT) -#define jack_supports_spkr(type) \ - ((type != JACK_TYPE_DISCONNECTED) && (type != JACK_TYPE_CONNECTED)) -#define jack_supports_buttons(type) \ - ((type == JACK_TYPE_HEADSET) ||\ - (type == JACK_TYPE_CARKIT) ||\ - (type == JACK_TYPE_OPENCABLE) ||\ - (type == JACK_TYPE_CONNECTED)) - - -/* Enumerations */ - -/** - * @JACK_TYPE_UNSPECIFIED Not known whether any accessories are connected. - * @JACK_TYPE_DISCONNECTED No accessories connected. - * @JACK_TYPE_CONNECTED Accessory is connected but functionality was unable to - * detect the actual type. In this mode, possible button events are reported. - * @JACK_TYPE_HEADPHONE Headphone type of accessory (spkrs only) connected - * @JACK_TYPE_HEADSET Headset type of accessory (mic+spkrs) connected - * @JACK_TYPE_CARKIT Carkit type of accessory connected - * @JACK_TYPE_OPENCABLE Open cable connected - * @JACK_TYPE_CVIDEO CVideo type of accessory connected. - */ -enum accessory_jack_type { - JACK_TYPE_UNSPECIFIED, - JACK_TYPE_DISCONNECTED, - JACK_TYPE_CONNECTED, - JACK_TYPE_HEADPHONE, - JACK_TYPE_HEADSET, - JACK_TYPE_CARKIT, - JACK_TYPE_OPENCABLE, - JACK_TYPE_CVIDEO -}; - -/** - * @BUTTON_UNK Button state not known - * @BUTTON_PRESSED Button "down" - * @BUTTON_RELEASED Button "up" - */ -enum accessory_button_state { - BUTTON_UNK, - BUTTON_PRESSED, - BUTTON_RELEASED -}; - -/** - * @PLUG_IRQ Interrupt gen. when accessory plugged in - * @UNPLUG_IRQ Interrupt gen. when accessory plugged out - * @BUTTON_PRESS_IRQ Interrupt gen. when accessory button pressed. - * @BUTTON_RELEASE_IRQ Interrupt gen. when accessory button released. - */ -enum accessory_irq { - PLUG_IRQ, - UNPLUG_IRQ, - BUTTON_PRESS_IRQ, - BUTTON_RELEASE_IRQ -}; - -/** - * Enumerates the op. modes of the avcontrol switch - * @AUDIO_IN Audio input is selected - * @VIDEO_OUT Video output is selected - * @NOT_SET The av-switch control signal is disconnected. - */ -enum accessory_avcontrol_dir { - AUDIO_IN, - VIDEO_OUT, - NOT_SET, -}; - -/** - * @REGULATOR_VAUDIO v-audio regulator - * @REGULATOR_VAMIC1 v-amic1 regulator - * @REGULATOR_AVSWITCH Audio/Video select switch regulator - * @REGULATOR_ALL All regulators combined - */ -enum accessory_regulator { - REGULATOR_NONE = 0x0, - REGULATOR_VAUDIO = 0x1, - REGULATOR_VAMIC1 = 0x2, - REGULATOR_AVSWITCH = 0x4, - REGULATOR_ALL = 0xFF -}; - -/* Structures */ - -/** - * Describes an interrupt - * @irq interrupt identifier - * @name name of the irq in platform data - * @isr interrupt service routine - * @register are we currently registered to receive interrupts from this source. - */ -struct accessory_irq_descriptor { - enum accessory_irq irq; - const char *name; - irq_handler_t isr; - int registered; -}; - -/** - * Encapsulates info of single regulator. - * @id regulator identifier - * @name name of the regulator - * @enabled flag indicating whether regu is currently enabled. - * @handle regulator handle - */ -struct accessory_regu_descriptor { - enum accessory_regulator id; - const char *name; - int enabled; - struct regulator *handle; -}; - -/** - * Defines attributes for accessory detection operation. - * @typename type as string - * @type Type of accessory this task tests - * @req_det_count How many times this particular type of accessory - * needs to be detected in sequence in order to accept. Multidetection - * implemented to avoid false detections during plug-in. - * @meas_mv Should ACCDETECT2 input voltage be measured just before - * making the decision or can cached voltage be used instead. - * @minvol minimum voltage (mV) for decision - * @maxvol maximum voltage (mV) for decision - */ -struct accessory_detect_task { - const char *typename; - enum accessory_jack_type type; - int req_det_count; - int meas_mv; - int minvol; - int maxvol; -}; - -/** - * Device data, capsulates all relevant device data structures. - * - * @pdev pointer to platform device - * @pdata Platform data - * @gpadc interface for ADC data - * @irq_work_queue Work queue for deferred interrupt processing - * - * @detect_work work item to perform detection work - * @unplug_irq_work work item to process unplug event - * @init_work work item to process initialization work. - * - * @btn_input_dev button input device used to report btn presses - * @btn_state Current state of accessory button - * - * @jack_type type of currently connected accessory - * @reported_jack_type previously reported jack type. - * @jack_type_temp temporary storage for currently connected accessory - * - * @jack_det_count counter how many times in sequence the accessory - * type detection has produced same result. - * @total_jack_det_count after plug-in irq, how many times detection - * has totally been made in order to detect the accessory type - * - * @detect_jiffies Used to save timestamp when detection was made. Timestamp - * used to filter out spurious button presses that might occur during the - * plug-in procedure. - * - * @accdet1_th_set flag to indicate whether accdet1 threshold and debounce - * times are configured - * @accdet2_th_set flag to indicate whether accdet2 thresholds are configured - * @gpio35_dir_set flag to indicate whether GPIO35 (VIDEOCTRL) direction - * has been configured. - * @ab_switch userspace android switch interface - */ -struct ab8500_ad { - struct platform_device *pdev; - struct ab8500_accdet_platform_data *pdata; - struct ab8500_gpadc *gpadc; - struct workqueue_struct *irq_work_queue; - - struct delayed_work detect_work; - struct delayed_work unplug_irq_work; - struct delayed_work init_work; - - struct input_dev *btn_input_dev; - enum accessory_button_state btn_state; - - enum accessory_jack_type jack_type; - enum accessory_jack_type reported_jack_type; - enum accessory_jack_type jack_type_temp; - - int jack_det_count; - int total_jack_det_count; - - unsigned long detect_jiffies; - - int accdet1_th_set; - int accdet2_th_set; - int gpio35_dir_set; - struct switch_dev ab_switch; -}; - -/* Forward declarations */ - -static void config_accdetect(struct ab8500_ad *dd); - -static void release_irq(struct ab8500_ad *dd, enum accessory_irq irq_id); -static void claim_irq(struct ab8500_ad *dd, enum accessory_irq irq_id); - -static irqreturn_t unplug_irq_handler(int irq, void *_userdata); -static irqreturn_t plug_irq_handler(int irq, void *_userdata); -static irqreturn_t button_press_irq_handler(int irq, void *_userdata); -static irqreturn_t button_release_irq_handler(int irq, void *_userdata); - -static void unplug_irq_handler_work(struct work_struct *work); -static void detect_work(struct work_struct *work); -static void init_work(struct work_struct *work); - -static enum accessory_jack_type detect(struct ab8500_ad *dd, int *required_det); -static void set_av_switch(struct ab8500_ad *dd, - enum accessory_avcontrol_dir dir); - /* Static data initialization */ -static struct accessory_detect_task detect_ops[] = { - { - .type = JACK_TYPE_DISCONNECTED, - .typename = "DISCONNECTED", - .meas_mv = 1, - .req_det_count = 1, - .minvol = ACCESSORY_DET_VOL_DONTCARE, - .maxvol = ACCESSORY_DET_VOL_DONTCARE - }, - { - .type = JACK_TYPE_HEADPHONE, - .typename = "HEADPHONE", - .meas_mv = 1, - .req_det_count = 1, - .minvol = ACCESSORY_HEADPHONE_DET_VOL_MIN, - .maxvol = ACCESSORY_HEADPHONE_DET_VOL_MAX - }, - { - .type = JACK_TYPE_CVIDEO, - .typename = "CVIDEO", - .meas_mv = 0, - .req_det_count = 4, - .minvol = ACCESSORY_CVIDEO_DET_VOL_MIN, - .maxvol = ACCESSORY_CVIDEO_DET_VOL_MAX - }, - { - .type = JACK_TYPE_OPENCABLE, - .typename = "OPENCABLE", - .meas_mv = 0, - .req_det_count = 4, - .minvol = ACCESSORY_OPENCABLE_DET_VOL_MIN, - .maxvol = ACCESSORY_OPENCABLE_DET_VOL_MAX - }, - { - .type = JACK_TYPE_CARKIT, - .typename = "CARKIT", - .meas_mv = 1, - .req_det_count = 1, - .minvol = ACCESSORY_CARKIT_DET_VOL_MIN, - .maxvol = ACCESSORY_CARKIT_DET_VOL_MAX - }, - { - .type = JACK_TYPE_HEADSET, - .typename = "HEADSET", - .meas_mv = 0, - .req_det_count = 2, - .minvol = ACCESSORY_HEADSET_DET_VOL_MIN, - .maxvol = ACCESSORY_HEADSET_DET_VOL_MAX - }, - { - .type = JACK_TYPE_CONNECTED, - .typename = "CONNECTED", - .meas_mv = 0, - .req_det_count = 4, - .minvol = ACCESSORY_DET_VOL_DONTCARE, - .maxvol = ACCESSORY_DET_VOL_DONTCARE - } -}; - -static struct accessory_regu_descriptor regu_desc[3] = { +static struct accessory_regu_descriptor ab8500_regu_desc[3] = { { .id = REGULATOR_VAUDIO, .name = "v-audio", @@ -383,7 +86,7 @@ static struct accessory_regu_descriptor regu_desc[3] = { }, }; -static struct accessory_irq_descriptor irq_desc_norm[] = { +static struct accessory_irq_descriptor ab8500_irq_desc_norm[] = { { .irq = PLUG_IRQ, .name = "ACC_DETECT_1DB_F", @@ -406,7 +109,7 @@ static struct accessory_irq_descriptor irq_desc_norm[] = { }, }; -static struct accessory_irq_descriptor irq_desc_inverted[] = { +static struct accessory_irq_descriptor ab8500_irq_desc_inverted[] = { { .irq = PLUG_IRQ, .name = "ACC_DETECT_1DB_R", @@ -429,102 +132,10 @@ static struct accessory_irq_descriptor irq_desc_inverted[] = { }, }; -static struct accessory_irq_descriptor *irq_desc; - -/* - * textual represenation of the accessory type - */ -static const char *accessory_str(enum accessory_jack_type type) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(detect_ops); i++) - if (type == detect_ops[i].type) - return detect_ops[i].typename; - - return "UNKNOWN?"; -} - -/* - * enables regulator but only if it has not been enabled earlier. - */ -static void accessory_regulator_enable(enum accessory_regulator reg) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(regu_desc); i++) { - if (reg & regu_desc[i].id) { - if (!regu_desc[i].enabled) { - if (!regulator_enable(regu_desc[i].handle)) - regu_desc[i].enabled = 1; - } - } - } -} - -/* - * disables regulator but only if it has been previously enabled. - */ -static void accessory_regulator_disable(enum accessory_regulator reg) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(regu_desc); i++) { - if (reg & regu_desc[i].id) { - if (regu_desc[i].enabled) { - if (!regulator_disable(regu_desc[i].handle)) - regu_desc[i].enabled = 0; - } - } - } -} - -/* - * frees previously retrieved regulators. - */ -static void free_regulators(void) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(regu_desc); i++) { - if (regu_desc[i].handle) { - regulator_put(regu_desc[i].handle); - regu_desc[i].handle = NULL; - } - } -} - -/* - * gets required regulators. - */ -static int create_regulators(struct ab8500_ad *dd) -{ - int i; - int status = 0; - - for (i = 0; i < ARRAY_SIZE(regu_desc); i++) { - struct regulator *regu = - regulator_get(&dd->pdev->dev, regu_desc[i].name); - if (IS_ERR(regu)) { - status = PTR_ERR(regu); - dev_err(&dd->pdev->dev, - "%s: Failed to get supply '%s' (%d).\n", - __func__, regu_desc[i].name, status); - free_regulators(); - goto out; - } else { - regu_desc[i].handle = regu; - } - } - -out: - return status; -} - /* * configures accdet2 input on/off */ -static void config_accdetect2_hw(struct ab8500_ad *dd, int enable) +static void ab8500_config_accdetect2_hw(struct abx500_ad *dd, int enable) { int ret = 0; @@ -563,7 +174,7 @@ out: /* * configures accdet1 input on/off */ -static void config_accdetect1_hw(struct ab8500_ad *dd, int enable) +static void ab8500_config_accdetect1_hw(struct abx500_ad *dd, int enable) { int ret; @@ -594,86 +205,9 @@ static void config_accdetect1_hw(struct ab8500_ad *dd, int enable) } /* - * create input device for button press reporting - */ -static int create_btn_input_dev(struct ab8500_ad *dd) -{ - int err; - - dd->btn_input_dev = input_allocate_device(); - if (!dd->btn_input_dev) { - dev_err(&dd->pdev->dev, "%s: Failed to allocate input dev.\n", - __func__); - err = -ENOMEM; - goto out; - } - - input_set_capability(dd->btn_input_dev, - EV_KEY, - dd->pdata->btn_keycode); - - dd->btn_input_dev->name = BTN_INPUT_DEV_NAME; - dd->btn_input_dev->uniq = BTN_INPUT_UNIQUE_VALUE; - dd->btn_input_dev->dev.parent = &dd->pdev->dev; - - err = input_register_device(dd->btn_input_dev); - if (err) { - dev_err(&dd->pdev->dev, - "%s: register_input_device failed (%d).\n", __func__, - err); - input_free_device(dd->btn_input_dev); - dd->btn_input_dev = NULL; - goto out; - } -out: - return err; -} - -/* - * reports jack status - */ -static void report_jack_status(struct ab8500_ad *dd) -{ - int value = 0; - - /* Never report possible open cable */ - if (dd->jack_type == JACK_TYPE_OPENCABLE) - goto out; - - /* Never report same state twice in a row */ - if (dd->jack_type == dd->reported_jack_type) - goto out; - dd->reported_jack_type = dd->jack_type; - - dev_info(&dd->pdev->dev, "Accessory: %s\n", - accessory_str(dd->jack_type)); - - if (dd->jack_type != JACK_TYPE_DISCONNECTED && - dd->jack_type != JACK_TYPE_UNSPECIFIED) - value |= SND_JACK_MECHANICAL; - if (jack_supports_mic(dd->jack_type)) - value |= SND_JACK_MICROPHONE; - if (jack_supports_spkr(dd->jack_type)) - value |= (SND_JACK_HEADPHONE | SND_JACK_LINEOUT); - if (dd->jack_type == JACK_TYPE_CVIDEO) { - value |= SND_JACK_VIDEOOUT; - set_av_switch(dd, VIDEO_OUT); - } - - if (dd->jack_type == JACK_TYPE_DISCONNECTED) - switch_set_state(&dd->ab_switch, 0); - else - switch_set_state(&dd->ab_switch, 1); - - ux500_ab8500_jack_report(value); - -out: return; -} - -/* * returns the high level status whether some accessory is connected (1|0). */ -static int detect_plugged_in(struct ab8500_ad *dd) +static int ab8500_detect_plugged_in(struct abx500_ad *dd) { u8 value = 0; @@ -697,16 +231,18 @@ static int detect_plugged_in(struct ab8500_ad *dd) /* * mic_line_voltage_stable - measures a relative stable voltage from spec. input */ -static int meas_voltage_stable(struct ab8500_ad *dd, u8 input) +static int ab8500_meas_voltage_stable(struct abx500_ad *dd) { int iterations = 2; int v1, v2, dv; - v1 = ab8500_gpadc_convert(dd->gpadc, input); + v1 = ab8500_gpadc_convert((struct ab8500_gpadc *)dd->gpadc, + ACC_DETECT2); do { msleep(1); --iterations; - v2 = ab8500_gpadc_convert(dd->gpadc, input); + v2 = ab8500_gpadc_convert((struct ab8500_gpadc *)dd->gpadc, + ACC_DETECT2); dv = abs(v2 - v1); v1 = v2; } while (iterations > 0 && dv > MAX_VOLT_DIFF); @@ -715,187 +251,11 @@ static int meas_voltage_stable(struct ab8500_ad *dd, u8 input) } /* - * worker routine to handle accessory unplug case - */ -static void unplug_irq_handler_work(struct work_struct *work) -{ - struct ab8500_ad *dd = container_of(work, - struct ab8500_ad, unplug_irq_work.work); - - dev_dbg(&dd->pdev->dev, "%s: Enter\n", __func__); - - dd->jack_type = dd->jack_type_temp = JACK_TYPE_DISCONNECTED; - dd->jack_det_count = dd->total_jack_det_count = 0; - dd->btn_state = BUTTON_UNK; - config_accdetect(dd); - - accessory_regulator_disable(REGULATOR_ALL); - - report_jack_status(dd); -} - -/* - * interrupt service routine for accessory unplug. - */ -static irqreturn_t unplug_irq_handler(int irq, void *_userdata) -{ - struct ab8500_ad *dd = _userdata; - - dev_dbg(&dd->pdev->dev, "%s: Enter (irq=%d)\n", __func__, irq); - - queue_delayed_work(dd->irq_work_queue, &dd->unplug_irq_work, - msecs_to_jiffies(DEBOUNCE_UNPLUG_EVENT_MS)); - - return IRQ_HANDLED; -} - -/* - * interrupt service routine for accessory plug. - */ -static irqreturn_t plug_irq_handler(int irq, void *_userdata) -{ - struct ab8500_ad *dd = _userdata; - - dev_dbg(&dd->pdev->dev, "%s: Enter (irq=%d)\n", - __func__, irq); - - switch (dd->jack_type) { - case JACK_TYPE_DISCONNECTED: - case JACK_TYPE_UNSPECIFIED: - queue_delayed_work(dd->irq_work_queue, &dd->detect_work, - msecs_to_jiffies(DEBOUNCE_PLUG_EVENT_MS)); - break; - - default: - dev_err(&dd->pdev->dev, "%s: Unexpected plug IRQ\n", __func__); - break; - } - - return IRQ_HANDLED; -} - -/* - * worker routine to perform detection. - */ -static void detect_work(struct work_struct *work) -{ - int req_det_count = 1; - enum accessory_jack_type new_type; - struct ab8500_ad *dd = container_of(work, - struct ab8500_ad, detect_work.work); - - dev_dbg(&dd->pdev->dev, "%s: Enter\n", __func__); - - set_av_switch(dd, AUDIO_IN); - - new_type = detect(dd, &req_det_count); - - dd->total_jack_det_count++; - if (dd->jack_type_temp == new_type) { - dd->jack_det_count++; - } else { - dd->jack_det_count = 1; - dd->jack_type_temp = new_type; - } - - if (dd->total_jack_det_count >= MAX_DET_COUNT) { - dev_err(&dd->pdev->dev, - "%s: MAX_DET_COUNT(=%d) reached. Bailing out.\n", - __func__, MAX_DET_COUNT); - queue_delayed_work(dd->irq_work_queue, &dd->unplug_irq_work, - msecs_to_jiffies(DEBOUNCE_UNPLUG_EVENT_MS)); - } else if (dd->jack_det_count >= req_det_count) { - dd->total_jack_det_count = dd->jack_det_count = 0; - dd->jack_type = new_type; - dd->detect_jiffies = jiffies; - report_jack_status(dd); - config_accdetect(dd); - } else { - queue_delayed_work(dd->irq_work_queue, - &dd->detect_work, - msecs_to_jiffies(DEBOUNCE_PLUG_RETEST_MS)); - } -} - -/* - * reports a button event (pressed, released). - */ -static void report_btn_event(struct ab8500_ad *dd, int down) -{ - input_report_key(dd->btn_input_dev, dd->pdata->btn_keycode, down); - input_sync(dd->btn_input_dev); - - dev_dbg(&dd->pdev->dev, "HS-BTN: %s\n", down ? "PRESSED" : "RELEASED"); -} - -/* - * interrupt service routine invoked when hs button is pressed down. - */ -static irqreturn_t button_press_irq_handler(int irq, void *_userdata) -{ - struct ab8500_ad *dd = _userdata; - - unsigned long accept_jiffies = dd->detect_jiffies + - msecs_to_jiffies(1000); - if (time_before(jiffies, accept_jiffies)) { - dev_dbg(&dd->pdev->dev, "%s: Skipped spurious btn press.\n", - __func__); - return IRQ_HANDLED; - } - - dev_dbg(&dd->pdev->dev, "%s: Enter (irq=%d)\n", __func__, irq); - - if (dd->jack_type == JACK_TYPE_OPENCABLE) { - /* Someting got connected to open cable -> detect.. */ - config_accdetect2_hw(dd, 0); - queue_delayed_work(dd->irq_work_queue, &dd->detect_work, - msecs_to_jiffies(DEBOUNCE_PLUG_EVENT_MS)); - return IRQ_HANDLED; - } - - if (dd->btn_state == BUTTON_PRESSED) - return IRQ_HANDLED; - - if (jack_supports_buttons(dd->jack_type)) { - dd->btn_state = BUTTON_PRESSED; - report_btn_event(dd, 1); - } else { - dd->btn_state = BUTTON_UNK; - } - - return IRQ_HANDLED; -} - -/* - * interrupts service routine invoked when hs button is released. - */ -static irqreturn_t button_release_irq_handler(int irq, void *_userdata) -{ - struct ab8500_ad *dd = _userdata; - - dev_dbg(&dd->pdev->dev, "%s: Enter (irq=%d)\n", __func__, irq); - - if (dd->jack_type == JACK_TYPE_OPENCABLE) - return IRQ_HANDLED; - - if (dd->btn_state != BUTTON_PRESSED) - return IRQ_HANDLED; - - if (jack_supports_buttons(dd->jack_type)) { - report_btn_event(dd, 0); - dd->btn_state = BUTTON_RELEASED; - } else { - dd->btn_state = BUTTON_UNK; - } - - return IRQ_HANDLED; -} - -/* * configures HW so that it is possible to make decision whether * accessory is connected or not. */ -static void config_hw_test_plug_connected(struct ab8500_ad *dd, int enable) +static void ab8500_config_hw_test_plug_connected(struct abx500_ad *dd, + int enable) { int ret; @@ -910,20 +270,20 @@ static void config_hw_test_plug_connected(struct ab8500_ad *dd, int enable) } if (enable) - accessory_regulator_enable(REGULATOR_VAMIC1); + accessory_regulator_enable(dd, REGULATOR_VAMIC1); } /* * configures HW so that carkit/headset detection can be accomplished. */ -static void config_hw_test_basic_carkit(struct ab8500_ad *dd, int enable) +static void ab8500_config_hw_test_basic_carkit(struct abx500_ad *dd, int enable) { int ret; dev_dbg(&dd->pdev->dev, "%s:%d\n", __func__, enable); if (enable) - accessory_regulator_disable(REGULATOR_VAMIC1); + accessory_regulator_disable(dd, REGULATOR_VAMIC1); /* Un-Ground the VAMic1 output when enabled */ ret = abx500_mask_and_set_register_interruptible( @@ -938,60 +298,9 @@ static void config_hw_test_basic_carkit(struct ab8500_ad *dd, int enable) } /* - * checks whether measured voltage is in given range. depending on arguments, - * voltage might be re-measured or previously measured voltage is reused. - */ -static int mic_vol_in_range(struct ab8500_ad *dd, - int lo, int hi, int force_read) -{ - static int mv = MIN_MIC_POWER; - - if (mv == -100 || force_read) - mv = meas_voltage_stable(dd, ACC_DETECT2); - - return (mv >= lo && mv <= hi) ? 1 : 0; -} - -/* - * checks whether the currently connected HW is of given type. - */ -static int detect_hw(struct ab8500_ad *dd, - struct accessory_detect_task *task) -{ - int status; - - switch (task->type) { - case JACK_TYPE_DISCONNECTED: - config_hw_test_plug_connected(dd, 1); - status = !detect_plugged_in(dd); - break; - case JACK_TYPE_CONNECTED: - config_hw_test_plug_connected(dd, 1); - status = detect_plugged_in(dd); - break; - case JACK_TYPE_CARKIT: - config_hw_test_basic_carkit(dd, 1); - /* flow through.. */ - case JACK_TYPE_HEADPHONE: - case JACK_TYPE_CVIDEO: - case JACK_TYPE_HEADSET: - case JACK_TYPE_OPENCABLE: - status = mic_vol_in_range(dd, - task->minvol, - task->maxvol, - task->meas_mv); - break; - default: - status = 0; - } - - return status; -} - -/* * sets the av switch direction - audio-in vs video-out */ -static void set_av_switch(struct ab8500_ad *dd, +static void ab8500_set_av_switch(struct abx500_ad *dd, enum accessory_avcontrol_dir dir) { int ret; @@ -1019,345 +328,11 @@ static void set_av_switch(struct ab8500_ad *dd, } } -/* - * Tries to detect the currently attached accessory - */ -static enum accessory_jack_type detect(struct ab8500_ad *dd, - int *req_det_count) -{ - enum accessory_jack_type type = JACK_TYPE_DISCONNECTED; - int i; - - accessory_regulator_enable(REGULATOR_VAUDIO | REGULATOR_AVSWITCH); - - for (i = 0; i < ARRAY_SIZE(detect_ops); ++i) { - if (detect_hw(dd, &detect_ops[i])) { - type = detect_ops[i].type; - *req_det_count = detect_ops[i].req_det_count; - break; - } - } - - config_hw_test_basic_carkit(dd, 0); - config_hw_test_plug_connected(dd, 0); - - if (jack_supports_buttons(type)) - accessory_regulator_enable(REGULATOR_VAMIC1); - else - accessory_regulator_disable(REGULATOR_VAMIC1 | - REGULATOR_AVSWITCH); - - accessory_regulator_disable(REGULATOR_VAUDIO); - - return type; -} - -/* - * registers to specific interrupt - */ -static void claim_irq(struct ab8500_ad *dd, enum accessory_irq irq_id) -{ - int ret; - int irq; - - if (dd->pdata->is_detection_inverted) - irq_desc = irq_desc_inverted; - else - irq_desc = irq_desc_norm; - - if (irq_desc[irq_id].registered) - return; - - irq = platform_get_irq_byname( - dd->pdev, - irq_desc[irq_id].name); - if (irq < 0) { - dev_err(&dd->pdev->dev, - "%s: Failed to get irq %s\n", __func__, - irq_desc[irq_id].name); - return; - } - - ret = request_threaded_irq(irq, - NULL, - irq_desc[irq_id].isr, - IRQF_NO_SUSPEND | IRQF_SHARED, - irq_desc[irq_id].name, - dd); - if (ret != 0) { - dev_err(&dd->pdev->dev, - "%s: Failed to claim irq %s (%d)\n", - __func__, - irq_desc[irq_id].name, - ret); - } else { - irq_desc[irq_id].registered = 1; - dev_dbg(&dd->pdev->dev, "%s: %s\n", - __func__, irq_desc[irq_id].name); - } -} - -/* - * releases specific interrupt - */ -static void release_irq(struct ab8500_ad *dd, enum accessory_irq irq_id) -{ - int irq; - - if (dd->pdata->is_detection_inverted) - irq_desc = irq_desc_inverted; - else - irq_desc = irq_desc_norm; - - if (!irq_desc[irq_id].registered) - return; - - irq = platform_get_irq_byname( - dd->pdev, - irq_desc[irq_id].name); - if (irq < 0) { - dev_err(&dd->pdev->dev, - "%s: Failed to get irq %s (%d)\n", - __func__, - irq_desc[irq_id].name, irq); - } else { - free_irq(irq, dd); - irq_desc[irq_id].registered = 0; - dev_dbg(&dd->pdev->dev, "%s: %s\n", - __func__, irq_desc[irq_id].name); - } -} - -/* - * configures interrupts + detection hardware to meet the requirements - * set by currently attached accessory type. - */ -static void config_accdetect(struct ab8500_ad *dd) -{ - switch (dd->jack_type) { - case JACK_TYPE_UNSPECIFIED: - config_accdetect1_hw(dd, 1); - config_accdetect2_hw(dd, 0); - - release_irq(dd, PLUG_IRQ); - release_irq(dd, UNPLUG_IRQ); - release_irq(dd, BUTTON_PRESS_IRQ); - release_irq(dd, BUTTON_RELEASE_IRQ); - set_av_switch(dd, NOT_SET); - break; - - case JACK_TYPE_DISCONNECTED: - set_av_switch(dd, NOT_SET); - case JACK_TYPE_HEADPHONE: - case JACK_TYPE_CVIDEO: - config_accdetect1_hw(dd, 1); - config_accdetect2_hw(dd, 0); - - claim_irq(dd, PLUG_IRQ); - claim_irq(dd, UNPLUG_IRQ); - release_irq(dd, BUTTON_PRESS_IRQ); - release_irq(dd, BUTTON_RELEASE_IRQ); - break; - - case JACK_TYPE_CONNECTED: - case JACK_TYPE_HEADSET: - case JACK_TYPE_CARKIT: - case JACK_TYPE_OPENCABLE: - config_accdetect1_hw(dd, 1); - config_accdetect2_hw(dd, 1); - - release_irq(dd, PLUG_IRQ); - claim_irq(dd, UNPLUG_IRQ); - claim_irq(dd, BUTTON_PRESS_IRQ); - claim_irq(dd, BUTTON_RELEASE_IRQ); - break; - - default: - dev_err(&dd->pdev->dev, "%s: Unknown type: %d\n", - __func__, dd->jack_type); - } -} - -/* - * Deferred initialization of the work. - */ -static void init_work(struct work_struct *work) -{ - struct ab8500_ad *dd = container_of(work, - struct ab8500_ad, init_work.work); - - dev_dbg(&dd->pdev->dev, "%s: Enter\n", __func__); - - dd->jack_type = dd->reported_jack_type = JACK_TYPE_UNSPECIFIED; - config_accdetect(dd); - queue_delayed_work(dd->irq_work_queue, - &dd->detect_work, - msecs_to_jiffies(0)); -} - -/* - * performs platform device initialization - */ -static int ab8500_accessory_init(struct platform_device *pdev) -{ - struct ab8500_ad *dd; - struct ab8500_platform_data *plat; - int ret; - - dev_dbg(&pdev->dev, "Enter: %s\n", __func__); - - dd = kzalloc(sizeof(struct ab8500_ad), GFP_KERNEL); - if (!dd) { - dev_err(&pdev->dev, "%s: Mem. alloc failed\n", __func__); - goto fail_no_mem_for_devdata; - } - - dd->pdev = pdev; - dd->pdata = pdev->dev.platform_data; - plat = dev_get_platdata(pdev->dev.parent); - - if (!plat || !plat->accdet) { - dev_err(&pdev->dev, "%s: Failed to get accdet plat data.\n", - __func__); - goto fail_no_ab8500_dev; - } - dd->pdata = plat->accdet; - - if (dd->pdata->video_ctrl_gpio) { - if (!gpio_is_valid(dd->pdata->video_ctrl_gpio)) { - dev_err(&pdev->dev, - "%s: Video ctrl GPIO invalid (%d).\n", __func__, - dd->pdata->video_ctrl_gpio); - goto fail_video_ctrl_gpio; - } - if (gpio_request(dd->pdata->video_ctrl_gpio, "Video Control")) { - dev_err(&pdev->dev, "%s: Get video ctrl GPIO failed.\n", - __func__); - goto fail_video_ctrl_gpio; - } - } - - if (create_btn_input_dev(dd) < 0) { - dev_err(&pdev->dev, "%s: create_button_input_dev failed.\n", - __func__); - goto fail_no_btn_input_dev; - } - - if (create_regulators(dd) < 0) { - dev_err(&pdev->dev, "%s: failed to create regulators\n", - __func__); - goto fail_no_regulators; - } - dd->btn_state = BUTTON_UNK; - - dd->irq_work_queue = create_singlethread_workqueue("ab8500_accdet_wq"); - if (!dd->irq_work_queue) { - dev_err(&pdev->dev, "%s: Failed to create wq\n", __func__); - goto fail_no_mem_for_wq; - } - dd->gpadc = ab8500_gpadc_get(); - - INIT_DELAYED_WORK(&dd->detect_work, detect_work); - INIT_DELAYED_WORK(&dd->unplug_irq_work, unplug_irq_handler_work); - INIT_DELAYED_WORK(&dd->init_work, init_work); - - /* Deferred init/detect since no use for the info early in boot */ - queue_delayed_work(dd->irq_work_queue, - &dd->init_work, - msecs_to_jiffies(INIT_DELAY_MS)); - - platform_set_drvdata(pdev, dd); - - /* Android switch interface */ - dd->ab_switch.name = "h2w"; - ret = switch_dev_register(&dd->ab_switch); - if (ret < 0) - goto fail_switch; - - return 0; -fail_switch: - destroy_workqueue(dd->irq_work_queue); -fail_no_mem_for_wq: - free_regulators(); -fail_no_regulators: - input_unregister_device(dd->btn_input_dev); -fail_no_btn_input_dev: - gpio_free(dd->pdata->video_ctrl_gpio); -fail_video_ctrl_gpio: -fail_no_ab8500_dev: - kfree(dd); -fail_no_mem_for_devdata: - - return -ENOMEM; -} - -/* - * Performs platform device cleanup - */ -static void ab8500_accessory_cleanup(struct ab8500_ad *dd) -{ - dev_dbg(&dd->pdev->dev, "Enter: %s\n", __func__); - - dd->jack_type = JACK_TYPE_UNSPECIFIED; - config_accdetect(dd); - - gpio_free(dd->pdata->video_ctrl_gpio); - input_unregister_device(dd->btn_input_dev); - free_regulators(); - - cancel_delayed_work(&dd->detect_work); - cancel_delayed_work(&dd->unplug_irq_work); - cancel_delayed_work(&dd->init_work); - flush_workqueue(dd->irq_work_queue); - destroy_workqueue(dd->irq_work_queue); - switch_dev_unregister(&dd->ab_switch); - - kfree(dd); -} - -static int __devinit ab8500_acc_detect_probe(struct platform_device *pdev) -{ - return ab8500_accessory_init(pdev); -} - - -static int __devexit ab8500_acc_detect_remove(struct platform_device *pdev) -{ - ab8500_accessory_cleanup(platform_get_drvdata(pdev)); - platform_set_drvdata(pdev, NULL); - - return 0; -} - -#if defined(CONFIG_PM) static u8 acc_det_ctrl_suspend_val; -static int ab8500_acc_detect_suspend(struct platform_device *pdev, - pm_message_t state) +static void ab8500_turn_off_accdet_comparator(struct platform_device *pdev) { - struct ab8500_ad *dd = platform_get_drvdata(pdev); - int irq_id, irq; - - dev_dbg(&dd->pdev->dev, "%s: Enter\n", __func__); - - cancel_delayed_work_sync(&dd->unplug_irq_work); - cancel_delayed_work_sync(&dd->detect_work); - cancel_delayed_work_sync(&dd->init_work); - - if (dd->pdata->is_detection_inverted) - irq_desc = irq_desc_inverted; - else - irq_desc = irq_desc_norm; - - for (irq_id = 0; irq_id < ARRAY_SIZE(irq_desc_norm); irq_id++) { - if (irq_desc[irq_id].registered == 1) { - irq = platform_get_irq_byname( - dd->pdev, - irq_desc[irq_id].name); - - disable_irq(irq); - } - } + struct abx500_ad *dd = platform_get_drvdata(pdev); /* Turn off AccDetect comparators and pull-up */ (void) abx500_get_register_interruptible( @@ -1371,21 +346,11 @@ static int ab8500_acc_detect_suspend(struct platform_device *pdev, AB8500_ACC_DET_CTRL_REG, 0); - if (dd->jack_type == JACK_TYPE_HEADSET) - accessory_regulator_disable(REGULATOR_VAMIC1); - - return 0; } -static int ab8500_acc_detect_resume(struct platform_device *pdev) +static void ab8500_turn_on_accdet_comparator(struct platform_device *pdev) { - struct ab8500_ad *dd = platform_get_drvdata(pdev); - int irq_id, irq; - - dev_dbg(&dd->pdev->dev, "%s: Enter\n", __func__); - - if (dd->jack_type == JACK_TYPE_HEADSET) - accessory_regulator_enable(REGULATOR_VAMIC1); + struct abx500_ad *dd = platform_get_drvdata(pdev); /* Turn on AccDetect comparators and pull-up */ (void) abx500_set_register_interruptible( @@ -1394,56 +359,49 @@ static int ab8500_acc_detect_resume(struct platform_device *pdev) AB8500_ACC_DET_CTRL_REG, acc_det_ctrl_suspend_val); - if (dd->pdata->is_detection_inverted) - irq_desc = irq_desc_inverted; - else - irq_desc = irq_desc_norm; - - for (irq_id = 0; irq_id < ARRAY_SIZE(irq_desc_norm); irq_id++) { - if (irq_desc[irq_id].registered == 1) { - irq = platform_get_irq_byname( - dd->pdev, - irq_desc[irq_id].name); - - enable_irq(irq); - - } - } - - /* After resume, reinitialize */ - dd->gpio35_dir_set = dd->accdet1_th_set = dd->accdet2_th_set = 0; - queue_delayed_work(dd->irq_work_queue, &dd->init_work, 0); - - return 0; } -#else -#define ab8500_acc_detect_suspend NULL -#define ab8500_acc_detect_resume NULL -#endif - -static struct platform_driver ab8500_acc_detect_platform_driver = { - .driver = { - .name = "ab8500-acc-det", - .owner = THIS_MODULE, - }, - .probe = ab8500_acc_detect_probe, - .remove = __devexit_p(ab8500_acc_detect_remove), - .suspend = ab8500_acc_detect_suspend, - .resume = ab8500_acc_detect_resume, -}; -static int __init ab8500_acc_detect_init(void) +static void *ab8500_accdet_abx500_gpadc_get(void) { - return platform_driver_register(&ab8500_acc_detect_platform_driver); + return ab8500_gpadc_get(); } -static void __exit ab8500_acc_detect_exit(void) +struct abx500_accdet_platform_data * + ab8500_get_platform_data(struct platform_device *pdev) { - platform_driver_unregister(&ab8500_acc_detect_platform_driver); -} + struct ab8500_platform_data *plat; -module_init(ab8500_acc_detect_init); -module_exit(ab8500_acc_detect_exit); + plat = dev_get_platdata(pdev->dev.parent); + + if (!plat || !plat->accdet) { + dev_err(&pdev->dev, "%s: Failed to get accdet plat data.\n", + __func__); + return ERR_PTR(-ENODEV); + } + + return plat->accdet; +} + +struct abx500_ad ab8500_accessory_det_callbacks = { + .irq_desc_norm = ab8500_irq_desc_norm, + .irq_desc_inverted = ab8500_irq_desc_inverted, + .no_irqs = ARRAY_SIZE(ab8500_irq_desc_norm), + .regu_desc = ab8500_regu_desc, + .no_of_regu_desc = ARRAY_SIZE(ab8500_regu_desc), + .config_accdetect2_hw = ab8500_config_accdetect2_hw, + .config_accdetect1_hw = ab8500_config_accdetect1_hw, + .detect_plugged_in = ab8500_detect_plugged_in, + .meas_voltage_stable = ab8500_meas_voltage_stable, + .config_hw_test_basic_carkit = ab8500_config_hw_test_basic_carkit, + .turn_off_accdet_comparator = ab8500_turn_off_accdet_comparator, + .turn_on_accdet_comparator = ab8500_turn_on_accdet_comparator, + .accdet_abx500_gpadc_get = ab8500_accdet_abx500_gpadc_get, + .config_hw_test_plug_connected = ab8500_config_hw_test_plug_connected, + .startup = NULL, + .set_av_switch = ab8500_set_av_switch, + .tv_out_connected = false, + .get_platform_data = ab8500_get_platform_data, +}; MODULE_DESCRIPTION("AB8500 AV Accessory detection driver"); MODULE_ALIAS("platform:ab8500-acc-det"); |