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Subject[PATCH v2 1/4] sh: sh7785lcr: add GPIO lookup table for i2c controller reset
Date
Define the GPIO connected to the PCA9564 using a GPIO lookup table. This
will allow the i2c-pca-platform driver to use the device managed APIs to
lookup the gpio instead of using platform_data.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---
Changes in v2:
- use correct API (gpio_add_lookup_table) and compile test.

arch/sh/boards/board-sh7785lcr.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/arch/sh/boards/board-sh7785lcr.c b/arch/sh/boards/board-sh7785lcr.c
index 2c4771ee84cd..caec1ebffb09 100644
--- a/arch/sh/boards/board-sh7785lcr.c
+++ b/arch/sh/boards/board-sh7785lcr.c
@@ -25,6 +25,7 @@
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/errno.h>
+#include <linux/gpio/machine.h>
#include <mach/sh7785lcr.h>
#include <cpu/sh7785.h>
#include <asm/heartbeat.h>
@@ -243,6 +244,14 @@ static struct resource i2c_resources[] = {
},
};

+static struct gpiod_lookup_table i2c_gpio_table = {
+ .dev_id = "i2c.0",
+ .table = {
+ GPIO_LOOKUP("pfc-sh7757", 0, "reset-gpios", GPIO_ACTIVE_LOW),
+ { },
+ },
+};
+
static struct i2c_pca9564_pf_platform_data i2c_platform_data = {
.gpio = 0,
.i2c_clock_speed = I2C_PCA_CON_330kHz,
@@ -283,6 +292,7 @@ static int __init sh7785lcr_devices_setup(void)
i2c_device.num_resources = ARRAY_SIZE(i2c_proto_resources);
}

+ gpiod_add_lookup_table(&i2c_gpio_table);
return platform_add_devices(sh7785lcr_devices,
ARRAY_SIZE(sh7785lcr_devices));
}
--
2.13.0
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