ACPI / LPSS: 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> Acked-by: Mika Westerberg <mika.westerberg@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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@ -75,6 +75,7 @@ struct lpss_device_desc {
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const char *clk_con_id;
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unsigned int prv_offset;
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size_t prv_size_override;
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struct property_entry *properties;
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void (*setup)(struct lpss_private_data *pdata);
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};
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@ -163,11 +164,19 @@ static const struct lpss_device_desc lpt_i2c_dev_desc = {
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.prv_offset = 0x800,
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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 const struct lpss_device_desc lpt_uart_dev_desc = {
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.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_LTR,
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.clk_con_id = "baudclk",
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.prv_offset = 0x800,
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.setup = lpss_uart_setup,
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.properties = uart_properties,
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};
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static const struct lpss_device_desc lpt_sdio_dev_desc = {
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@ -189,6 +198,7 @@ static const struct lpss_device_desc byt_uart_dev_desc = {
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.clk_con_id = "baudclk",
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.prv_offset = 0x800,
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.setup = lpss_uart_setup,
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.properties = uart_properties,
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};
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static const struct lpss_device_desc bsw_uart_dev_desc = {
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@ -197,6 +207,7 @@ static const struct lpss_device_desc bsw_uart_dev_desc = {
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.clk_con_id = "baudclk",
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.prv_offset = 0x800,
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.setup = lpss_uart_setup,
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.properties = uart_properties,
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};
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static const struct lpss_device_desc byt_spi_dev_desc = {
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@ -440,6 +451,12 @@ static int acpi_lpss_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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