[RFC PATCH v2 4/6] i2c: aspeed: switch to generic fw properties.

[Jonathan Cameron <Jonathan.Cameron@huawei.com>]

Moving over to generic firmware properties allows this driver to
get closer to working out of the box with both device tree and
other firmware options, such as ACPI via PRP0001.

Tested only via QEMU emulation.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

---
v2:
- Added a proper patch description.
- Updated to reflect optional nature of bus-frequency.
---
 drivers/i2c/busses/i2c-aspeed.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c
index 4363bfe06f9b..353834d7ffd5 100644
--- a/drivers/i2c/busses/i2c-aspeed.c
+++ b/drivers/i2c/busses/i2c-aspeed.c
@@ -18,9 +18,8 @@
 #include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/reset.h>
 #include <linux/slab.h>
 
@@ -975,7 +974,6 @@ MODULE_DEVICE_TABLE(of, aspeed_i2c_bus_of_table);
 
 static int aspeed_i2c_probe_bus(struct platform_device *pdev)
 {
-	const struct of_device_id *match;
 	struct aspeed_i2c_bus *bus;
 	struct clk *parent_clk;
 	int irq, ret;
@@ -1004,15 +1002,13 @@ static int aspeed_i2c_probe_bus(struct platform_device *pdev)
 	reset_control_deassert(bus->rst);
 
 	bus->bus_frequency = I2C_MAX_STANDARD_MODE_FREQ;
-	of_property_read_u32(pdev->dev.of_node,
-			     "bus-frequency", &bus->bus_frequency);
+	device_property_read_u32(&pdev->dev,
+				 "bus-frequency", &bus->bus_frequency);
 
-	match = of_match_node(aspeed_i2c_bus_of_table, pdev->dev.of_node);
-	if (!match)
+	bus->get_clk_reg_val = (u32 (*)(struct device *, u32))
+		device_get_match_data(&pdev->dev);
+	if (!bus->get_clk_reg_val)
 		bus->get_clk_reg_val = aspeed_i2c_24xx_get_clk_reg_val;
-	else
-		bus->get_clk_reg_val = (u32 (*)(struct device *, u32))
-				match->data;
 
 	/* Initialize the I2C adapter */
 	spin_lock_init(&bus->lock);
-- 
2.39.2