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ACPI / APD: Provide build-in properties of the UART

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The UART driver, dw8250.c, needs some details regarding the
Designware UART. For ACPI enumerated devices the values are
hard-coded, but since the driver also reads the values from
device properties, providing them with build-in properties.
This allows us to later remove the hard-coded values from
the driver.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Heikki Krogerus 2016-08-23 11:33:26 +03:00 committed by Rafael J. Wysocki
parent 478573c93a
commit 7ff55d174c
1 changed files with 15 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

15
drivers/acpi/acpi_apd.c
View file

@ -42,6 +42,7 @@ struct apd_private_data;
struct apd_device_desc {
unsigned int flags;
unsigned int fixed_clk_rate;
struct property_entry *properties;
int (*setup)(struct apd_private_data *pdata);
};
@ -76,9 +77,17 @@ static struct apd_device_desc cz_i2c_desc = {
.fixed_clk_rate = 133000000,
};
static struct property_entry uart_properties[] = {
PROPERTY_ENTRY_U32("reg-io-width", 4),
PROPERTY_ENTRY_U32("reg-shift", 2),
PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
{ },
};
static struct apd_device_desc cz_uart_desc = {
.setup = acpi_apd_setup,
.fixed_clk_rate = 48000000,
.properties = uart_properties,
};
#endif
@ -125,6 +134,12 @@ static int acpi_apd_create_device(struct acpi_device *adev,
goto err_out;
}
if (dev_desc->properties) {
ret = device_add_properties(&adev->dev, dev_desc->properties);
if (ret)
goto err_out;
}
adev->driver_data = pdata;
pdev = acpi_create_platform_device(adev);
if (!IS_ERR_OR_NULL(pdev))