[linux-yocto] [PATCH 15/24] ACPI / LPSS: Add Intel BayTrail ACPI mode PWM

[rebecca.swee.fun.chang at intel.com]

From: "Chew, Chiau Ee" <chiau.ee.chew at intel.com>

Intel BayTrail LPSS consists of two PWM controllers which can
be enumerated from ACPI namespace. This change will cause
platform device objects to be created for Intel BayTrail PWM
controllers which will allow the pwm-lpss driver to bind to them
and handle those devices.

Signed-off-by: Chew, Chiau Ee <chiau.ee.chew at intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
(cherry picked from commit e1c7481797542f4d2039d5a458ef80603298ad78)
Signed-off-by: Chang Rebecca Swee Fun <rebecca.swee.fun.chang at intel.com>
---
 drivers/acpi/acpi_lpss.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 6745fe1..8c2bae9 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -102,6 +102,16 @@ static struct lpss_device_desc lpt_sdio_dev_desc = {
 	.ltr_required = true,
 };
 
+static struct lpss_shared_clock pwm_clock = {
+	.name = "pwm_clk",
+	.rate = 25000000,
+};
+
+static struct lpss_device_desc byt_pwm_dev_desc = {
+	.clk_required = true,
+	.shared_clock = &pwm_clock,
+};
+
 static struct lpss_shared_clock uart_clock = {
 	.name = "uart_clk",
 	.rate = 44236800,
@@ -157,6 +167,7 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = {
 	{ "INT33C7", },
 
 	/* BayTrail LPSS devices */
+	{ "80860F09", (unsigned long)&byt_pwm_dev_desc },
 	{ "80860F0A", (unsigned long)&byt_uart_dev_desc },
 	{ "80860F0E", (unsigned long)&byt_spi_dev_desc },
 	{ "80860F14", (unsigned long)&byt_sdio_dev_desc },
-- 
1.9.1