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