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@xxxxxxxxxxxxxxx>
Cc: Ken Xue <Ken.Xue@xxxxxxx>
---
drivers/acpi/acpi_apd.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c
index c80c8f8..a51dbef 100644
--- a/drivers/acpi/acpi_apd.c
+++ b/drivers/acpi/acpi_apd.c
@@ -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);
};
@@ -67,6 +68,9 @@ static int acpi_apd_setup(struct apd_private_data *pdata)
pdata->clk = clk;
}
+ if (pdata->properties)
+ return device_add_properties(&pdata->adev->dev,
+ pdata->properties);
return 0;
}
@@ -76,9 +80,17 @@ 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
--
2.8.1
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