ACPI / LPSS: Add Intel BayTrail ACPI mode PWM

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@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 6745fe137b9ea541ae729429035eaeca8fc8fc07..8c2bae980faf08780ddf14759cc8d71eef3531dc 100644 (file)
--- 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 },