[ARM] pxa: add I2C (TWSI) devices to pxa168/pxa910
Signed-off-by: Paul Shen <paul.shen@marvell.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
diff --git a/arch/arm/mach-mmp/include/mach/mfp-pxa168.h b/arch/arm/mach-mmp/include/mach/mfp-pxa168.h
index 2e91464..dc42263 100644
--- a/arch/arm/mach-mmp/include/mach/mfp-pxa168.h
+++ b/arch/arm/mach-mmp/include/mach/mfp-pxa168.h
@@ -253,6 +253,10 @@
#define GPIO58_LCD_PCLK_WR MFP_CFG(GPIO58, AF1)
#define GPIO85_LCD_VSYNC MFP_CFG(GPIO85, AF1)
+/* I2C */
+#define GPIO105_CI2C_SDA MFP_CFG(GPIO105, AF1)
+#define GPIO106_CI2C_SCL MFP_CFG(GPIO106, AF1)
+
/* I2S */
#define GPIO113_I2S_MCLK MFP_CFG(GPIO113,AF6)
#define GPIO114_I2S_FRM MFP_CFG(GPIO114,AF1)
diff --git a/arch/arm/mach-mmp/include/mach/pxa168.h b/arch/arm/mach-mmp/include/mach/pxa168.h
index ef0a8a2..bfdd629 100644
--- a/arch/arm/mach-mmp/include/mach/pxa168.h
+++ b/arch/arm/mach-mmp/include/mach/pxa168.h
@@ -1,10 +1,14 @@
#ifndef __ASM_MACH_PXA168_H
#define __ASM_MACH_PXA168_H
+#include <linux/i2c.h>
#include <mach/devices.h>
+#include <plat/i2c.h>
extern struct pxa_device_desc pxa168_device_uart1;
extern struct pxa_device_desc pxa168_device_uart2;
+extern struct pxa_device_desc pxa168_device_twsi0;
+extern struct pxa_device_desc pxa168_device_twsi1;
static inline int pxa168_add_uart(int id)
{
@@ -20,4 +24,24 @@
return pxa_register_device(d, NULL, 0);
}
+
+static inline int pxa168_add_twsi(int id, struct i2c_pxa_platform_data *data,
+ struct i2c_board_info *info, unsigned size)
+{
+ struct pxa_device_desc *d = NULL;
+ int ret;
+
+ switch (id) {
+ case 0: d = &pxa168_device_twsi0; break;
+ case 1: d = &pxa168_device_twsi1; break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = i2c_register_board_info(id, info, size);
+ if (ret)
+ return ret;
+
+ return pxa_register_device(d, data, sizeof(*data));
+}
#endif /* __ASM_MACH_PXA168_H */
diff --git a/arch/arm/mach-mmp/include/mach/pxa910.h b/arch/arm/mach-mmp/include/mach/pxa910.h
index b7aeaf5..a0f0cbe 100644
--- a/arch/arm/mach-mmp/include/mach/pxa910.h
+++ b/arch/arm/mach-mmp/include/mach/pxa910.h
@@ -1,10 +1,14 @@
#ifndef __ASM_MACH_PXA910_H
#define __ASM_MACH_PXA910_H
+#include <linux/i2c.h>
#include <mach/devices.h>
+#include <plat/i2c.h>
extern struct pxa_device_desc pxa910_device_uart1;
extern struct pxa_device_desc pxa910_device_uart2;
+extern struct pxa_device_desc pxa910_device_twsi0;
+extern struct pxa_device_desc pxa910_device_twsi1;
static inline int pxa910_add_uart(int id)
{
@@ -20,4 +24,24 @@
return pxa_register_device(d, NULL, 0);
}
+
+static inline int pxa910_add_twsi(int id, struct i2c_pxa_platform_data *data,
+ struct i2c_board_info *info, unsigned size)
+{
+ struct pxa_device_desc *d = NULL;
+ int ret;
+
+ switch (id) {
+ case 0: d = &pxa910_device_twsi0; break;
+ case 1: d = &pxa910_device_twsi1; break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = i2c_register_board_info(id, info, size);
+ if (ret)
+ return ret;
+
+ return pxa_register_device(d, data, sizeof(*data));
+}
#endif /* __ASM_MACH_PXA910_H */
diff --git a/arch/arm/mach-mmp/pxa168.c b/arch/arm/mach-mmp/pxa168.c
index ae92446..e0729e3 100644
--- a/arch/arm/mach-mmp/pxa168.c
+++ b/arch/arm/mach-mmp/pxa168.c
@@ -65,11 +65,15 @@
/* APB peripheral clocks */
static APBC_CLK(uart1, PXA168_UART1, 1, 14745600);
static APBC_CLK(uart2, PXA168_UART2, 1, 14745600);
+static APBC_CLK(twsi0, PXA168_TWSI0, 1, 33000000);
+static APBC_CLK(twsi1, PXA168_TWSI1, 1, 33000000);
/* device and clock bindings */
static struct clk_lookup pxa168_clkregs[] = {
INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
+ INIT_CLKREG(&clk_twsi0, "pxa2xx-i2c.0", NULL),
+ INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.1", NULL),
};
static int __init pxa168_init(void)
@@ -109,3 +113,5 @@
/* on-chip devices */
PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
+PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
+PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
diff --git a/arch/arm/mach-mmp/pxa910.c b/arch/arm/mach-mmp/pxa910.c
index 453f8f7..b97328b 100644
--- a/arch/arm/mach-mmp/pxa910.c
+++ b/arch/arm/mach-mmp/pxa910.c
@@ -103,11 +103,15 @@
/* APB peripheral clocks */
static APBC_CLK(uart1, PXA910_UART0, 1, 14745600);
static APBC_CLK(uart2, PXA910_UART1, 1, 14745600);
+static APBC_CLK(twsi0, PXA168_TWSI0, 1, 33000000);
+static APBC_CLK(twsi1, PXA168_TWSI1, 1, 33000000);
/* device and clock bindings */
static struct clk_lookup pxa910_clkregs[] = {
INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
+ INIT_CLKREG(&clk_twsi0, "pxa2xx-i2c.0", NULL),
+ INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.1", NULL),
};
static int __init pxa910_init(void)
@@ -156,3 +160,5 @@
*/
PXA910_DEVICE(uart1, "pxa2xx-uart", 0, UART2, 0xd4017000, 0x30, 21, 22);
PXA910_DEVICE(uart2, "pxa2xx-uart", 1, UART3, 0xd4018000, 0x30, 23, 24);
+PXA910_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
+PXA910_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);