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

Message ID 20230530145601.2592-5-Jonathan.Cameron@huawei.com
State New
Headers show
Series i2c: Enabling use of aspeed-i2c with ACPI | expand

Commit Message

Jonathan Cameron May 30, 2023, 2:55 p.m. UTC
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 mbox series

Patch

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);