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Commit 772c7137 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

Merge branches 'acpi-scan', 'acpi-ec' and 'acpi-lpss' 

* acpi-scan:
  ACPI: Run fixed event device notifications in process context
  ACPI / scan: Allow ACPI drivers to bind to PNP device objects

* acpi-ec:
  ACPI / EC: Add support to disallow QR_EC to be issued before completing previous QR_EC
  ACPI / EC: Add support to disallow QR_EC to be issued when SCI_EVT isn't set

* acpi-lpss:
  ACPI / LPSS: Add ACPI IDs for Intel Braswell
parents 52addcf9 236105db 558e4736 1bfbd8eb

drivers/acpi/acpi_lpss.c

+17 −0
Original line number Diff line number Diff line
@@ -196,6 +196,17 @@ static struct lpss_device_desc byt_i2c_dev_desc = { 
	.setup = lpss_i2c_setup,

};



static struct lpss_shared_clock bsw_pwm_clock = {

	.name = "pwm_clk",

	.rate = 19200000,

};



static struct lpss_device_desc bsw_pwm_dev_desc = {

	.clk_required = true,

	.save_ctx = true,

	.shared_clock = &bsw_pwm_clock,

};



#else



#define LPSS_ADDR(desc) (0UL)
@@ -225,6 +236,12 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = { 
	{ "INT33B2", },

	{ "INT33FC", },



	/* Braswell LPSS devices */

	{ "80862288", LPSS_ADDR(bsw_pwm_dev_desc) },

	{ "8086228A", LPSS_ADDR(byt_uart_dev_desc) },

	{ "8086228E", LPSS_ADDR(byt_spi_dev_desc) },

	{ "808622C1", LPSS_ADDR(byt_i2c_dev_desc) },



	{ "INT3430", LPSS_ADDR(lpt_dev_desc) },

	{ "INT3431", LPSS_ADDR(lpt_dev_desc) },

	{ "INT3432", LPSS_ADDR(lpt_i2c_dev_desc) },

drivers/acpi/ec.c

+18 −3
Original line number Diff line number Diff line
@@ -197,6 +197,8 @@ static bool advance_transaction(struct acpi_ec *ec) 
				t->rdata[t->ri++] = acpi_ec_read_data(ec);

				if (t->rlen == t->ri) {

					t->flags |= ACPI_EC_COMMAND_COMPLETE;

					if (t->command == ACPI_EC_COMMAND_QUERY)

						pr_debug("hardware QR_EC completion\n");

					wakeup = true;

				}

			} else
@@ -208,7 +210,20 @@ static bool advance_transaction(struct acpi_ec *ec) 
		}

		return wakeup;

	} else {

		if ((status & ACPI_EC_FLAG_IBF) == 0) {

		/*

		 * There is firmware refusing to respond QR_EC when SCI_EVT

		 * is not set, for which case, we complete the QR_EC

		 * without issuing it to the firmware.

		 * https://bugzilla.kernel.org/show_bug.cgi?id=86211

		 */

		if (!(status & ACPI_EC_FLAG_SCI) &&

		    (t->command == ACPI_EC_COMMAND_QUERY)) {

			t->flags |= ACPI_EC_COMMAND_POLL;

			t->rdata[t->ri++] = 0x00;

			t->flags |= ACPI_EC_COMMAND_COMPLETE;

			pr_debug("software QR_EC completion\n");

			wakeup = true;

		} else if ((status & ACPI_EC_FLAG_IBF) == 0) {

			acpi_ec_write_cmd(ec, t->command);

			t->flags |= ACPI_EC_COMMAND_POLL;

		} else
@@ -288,11 +303,11 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, 
	/* following two actions should be kept atomic */

	ec->curr = t;

	start_transaction(ec);

	if (ec->curr->command == ACPI_EC_COMMAND_QUERY)

		clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);

	spin_unlock_irqrestore(&ec->lock, tmp);

	ret = ec_poll(ec);

	spin_lock_irqsave(&ec->lock, tmp);

	if (ec->curr->command == ACPI_EC_COMMAND_QUERY)

		clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);

	ec->curr = NULL;

	spin_unlock_irqrestore(&ec->lock, tmp);

	return ret;

drivers/acpi/scan.c

+11 −6
Original line number Diff line number Diff line
@@ -922,12 +922,17 @@ static void acpi_device_notify(acpi_handle handle, u32 event, void *data) 
	device->driver->ops.notify(device, event);

}



static acpi_status acpi_device_notify_fixed(void *data)

static void acpi_device_notify_fixed(void *data)

{

	struct acpi_device *device = data;



	/* Fixed hardware devices have no handles */

	acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device);

}



static acpi_status acpi_device_fixed_event(void *data)

{

	acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_device_notify_fixed, data);

	return AE_OK;

}
@@ -938,12 +943,12 @@ static int acpi_device_install_notify_handler(struct acpi_device *device) 
	if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)

		status =

		    acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,

						     acpi_device_notify_fixed,

						     acpi_device_fixed_event,

						     device);

	else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)

		status =

		    acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,

						     acpi_device_notify_fixed,

						     acpi_device_fixed_event,

						     device);

	else

		status = acpi_install_notify_handler(device->handle,
@@ -960,10 +965,10 @@ static void acpi_device_remove_notify_handler(struct acpi_device *device) 
{

	if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)

		acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,

						acpi_device_notify_fixed);

						acpi_device_fixed_event);

	else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)

		acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,

						acpi_device_notify_fixed);

						acpi_device_fixed_event);

	else

		acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,

					   acpi_device_notify);
@@ -975,7 +980,7 @@ static int acpi_device_probe(struct device *dev) 
	struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);

	int ret;



	if (acpi_dev->handler)

	if (acpi_dev->handler && !acpi_is_pnp_device(acpi_dev))

		return -EINVAL;



	if (!acpi_drv->ops.add)