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ACPI / APD: Add APM X-Gene ACPI I2C device support 

Add APM X-Gene ACPI I2C device support by hooks into existent
ACPI APD driver.  To fully enable support, require another
patch to add the X-Gene ACPI node into the DW I2C driver.

Signed-off-by: Loc Ho <lho@apm.com>
Reviewed-by: Ken Xue <Ken.Xue@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Loc Ho 2015-12-10 14:19:16 -07:00 committed by Rafael J. Wysocki
parent fa9e93b11c
commit b790eb20b8
1 changed files with 15 additions and 1 deletions
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16
drivers/acpi/acpi_apd.c
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@ -51,7 +51,7 @@ struct apd_private_data {
const struct apd_device_desc *dev_desc;
};
#ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
#if defined(CONFIG_X86_AMD_PLATFORM_DEVICE) || defined(CONFIG_ARM64)
#define APD_ADDR(desc) ((unsigned long)&desc)
static int acpi_apd_setup(struct apd_private_data *pdata)
@ -71,6 +71,7 @@ static int acpi_apd_setup(struct apd_private_data *pdata)
return 0;
}
#ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
static struct apd_device_desc cz_i2c_desc = {
.setup = acpi_apd_setup,
.fixed_clk_rate = 133000000,
@ -80,6 +81,14 @@ static struct apd_device_desc cz_uart_desc = {
.setup = acpi_apd_setup,
.fixed_clk_rate = 48000000,
};
#endif
#ifdef CONFIG_ARM64
static struct apd_device_desc xgene_i2c_desc = {
.setup = acpi_apd_setup,
.fixed_clk_rate = 100000000,
};
#endif
#else
@ -132,9 +141,14 @@ static int acpi_apd_create_device(struct acpi_device *adev,
static const struct acpi_device_id acpi_apd_device_ids[] = {
/* Generic apd devices */
#ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
{ "AMD0010", APD_ADDR(cz_i2c_desc) },
{ "AMD0020", APD_ADDR(cz_uart_desc) },
{ "AMD0030", },
#endif
#ifdef CONFIG_ARM64
{ "APMC0D0F", APD_ADDR(xgene_i2c_desc) },
#endif
{ }
};