diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.10/950-0380-Input-edt-ft5x06-Poll-the-device-if-no-interrupt-is-.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.10/950-0380-Input-edt-ft5x06-Poll-the-device-if-no-interrupt-is-.patch | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0380-Input-edt-ft5x06-Poll-the-device-if-no-interrupt-is-.patch b/target/linux/bcm27xx/patches-5.10/950-0380-Input-edt-ft5x06-Poll-the-device-if-no-interrupt-is-.patch new file mode 100644 index 0000000000..0b99d4bf9e --- /dev/null +++ b/target/linux/bcm27xx/patches-5.10/950-0380-Input-edt-ft5x06-Poll-the-device-if-no-interrupt-is-.patch @@ -0,0 +1,98 @@ +From d7763e8128b7697f5521e08f097f455d20aab5be Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Fri, 6 Nov 2020 18:45:10 +0000 +Subject: [PATCH] Input: edt-ft5x06: Poll the device if no interrupt is + configured. + +Not all systems have the interrupt line wired up, so switch to +polling the touchscreen off a timer if no interrupt line is +configured. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/input/touchscreen/edt-ft5x06.c | 51 +++++++++++++++++++++----- + 1 file changed, 41 insertions(+), 10 deletions(-) + +--- a/drivers/input/touchscreen/edt-ft5x06.c ++++ b/drivers/input/touchscreen/edt-ft5x06.c +@@ -69,6 +69,8 @@ + #define EDT_RAW_DATA_RETRIES 100 + #define EDT_RAW_DATA_DELAY 1000 /* usec */ + ++#define POLL_INTERVAL_MS 17 /* 17ms = 60fps */ ++ + enum edt_pmode { + EDT_PMODE_NOT_SUPPORTED, + EDT_PMODE_HIBERNATE, +@@ -126,6 +128,9 @@ struct edt_ft5x06_ts_data { + + struct edt_reg_addr reg_addr; + enum edt_ver version; ++ ++ struct timer_list timer; ++ struct work_struct work_i2c_poll; + }; + + struct edt_i2c_chip_data { +@@ -275,6 +280,22 @@ out: + return IRQ_HANDLED; + } + ++static void edt_ft5x06_ts_irq_poll_timer(struct timer_list *t) ++{ ++ struct edt_ft5x06_ts_data *tsdata = from_timer(tsdata, t, timer); ++ ++ schedule_work(&tsdata->work_i2c_poll); ++ mod_timer(&tsdata->timer, jiffies + msecs_to_jiffies(POLL_INTERVAL_MS)); ++} ++ ++static void edt_ft5x06_ts_work_i2c_poll(struct work_struct *work) ++{ ++ struct edt_ft5x06_ts_data *tsdata = container_of(work, ++ struct edt_ft5x06_ts_data, work_i2c_poll); ++ ++ edt_ft5x06_ts_isr(0, tsdata); ++} ++ + static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata, + u8 addr, u8 value) + { +@@ -1221,17 +1242,27 @@ static int edt_ft5x06_ts_probe(struct i2 + + i2c_set_clientdata(client, tsdata); + +- irq_flags = irq_get_trigger_type(client->irq); +- if (irq_flags == IRQF_TRIGGER_NONE) +- irq_flags = IRQF_TRIGGER_FALLING; +- irq_flags |= IRQF_ONESHOT; +- +- error = devm_request_threaded_irq(&client->dev, client->irq, +- NULL, edt_ft5x06_ts_isr, irq_flags, +- client->name, tsdata); +- if (error) { +- dev_err(&client->dev, "Unable to request touchscreen IRQ.\n"); +- return error; ++ if (client->irq) { ++ irq_flags = irq_get_trigger_type(client->irq); ++ if (irq_flags == IRQF_TRIGGER_NONE) ++ irq_flags = IRQF_TRIGGER_FALLING; ++ irq_flags |= IRQF_ONESHOT; ++ ++ error = devm_request_threaded_irq(&client->dev, client->irq, ++ NULL, edt_ft5x06_ts_isr, ++ irq_flags, client->name, ++ tsdata); ++ if (error) { ++ dev_err(&client->dev, "Unable to request touchscreen IRQ.\n"); ++ return error; ++ } ++ } else { ++ INIT_WORK(&tsdata->work_i2c_poll, ++ edt_ft5x06_ts_work_i2c_poll); ++ timer_setup(&tsdata->timer, edt_ft5x06_ts_irq_poll_timer, 0); ++ tsdata->timer.expires = jiffies + ++ msecs_to_jiffies(POLL_INTERVAL_MS); ++ add_timer(&tsdata->timer); + } + + error = devm_device_add_group(&client->dev, &edt_ft5x06_attr_group); |