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authorSascha Hauer <s.hauer@pengutronix.de>2009-01-28 07:07:11 -0500
committerSascha Hauer <s.hauer@pengutronix.de>2009-03-13 05:34:12 -0400
commita4e9a65a1f90e94eca3af1a69b42d039054ef9de (patch)
tree1280490a9b28f35f74c515fd7bb6f920a8094561 /arch/arm/mach-mx2
parentc5d4dbff965b77b39c0188e4146892d76c775a98 (diff)
[ARM] PCM038 board: Add I2C support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mx2')
-rw-r--r--arch/arm/mach-mx2/pcm038.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/mach-mx2/pcm038.c b/arch/arm/mach-mx2/pcm038.c
index d246eb1bb3ce..7d935e17aa1c 100644
--- a/arch/arm/mach-mx2/pcm038.c
+++ b/arch/arm/mach-mx2/pcm038.c
@@ -21,11 +21,17 @@
21#include <linux/mtd/physmap.h> 21#include <linux/mtd/physmap.h>
22#include <linux/mtd/plat-ram.h> 22#include <linux/mtd/plat-ram.h>
23#include <linux/io.h> 23#include <linux/io.h>
24#include <linux/i2c.h>
25#include <linux/i2c/at24.h>
26
24#include <asm/mach/arch.h> 27#include <asm/mach/arch.h>
25#include <asm/mach-types.h> 28#include <asm/mach-types.h>
26#include <mach/common.h> 29#include <mach/common.h>
27#include <mach/hardware.h> 30#include <mach/hardware.h>
28#include <mach/iomux.h> 31#include <mach/iomux.h>
32#ifdef CONFIG_I2C_IMX
33#include <mach/i2c.h>
34#endif
29#include <asm/mach/time.h> 35#include <asm/mach/time.h>
30#include <mach/imx-uart.h> 36#include <mach/imx-uart.h>
31#include <mach/board-pcm038.h> 37#include <mach/board-pcm038.h>
@@ -204,6 +210,51 @@ static void __init pcm038_init_sram(void)
204 __raw_writel(0x22220a00, CSCR_A(1)); 210 __raw_writel(0x22220a00, CSCR_A(1));
205} 211}
206 212
213#ifdef CONFIG_I2C_IMX
214static int mxc_i2c1_pins[] = {
215 PC5_PF_I2C2_SDA,
216 PC6_PF_I2C2_SCL
217};
218
219static int pcm038_i2c_1_init(struct device *dev)
220{
221 return mxc_gpio_setup_multiple_pins(mxc_i2c1_pins, ARRAY_SIZE(mxc_i2c1_pins),
222 "I2C1");
223}
224
225static void pcm038_i2c_1_exit(struct device *dev)
226{
227 mxc_gpio_release_multiple_pins(mxc_i2c1_pins, ARRAY_SIZE(mxc_i2c1_pins));
228}
229
230static struct imxi2c_platform_data pcm038_i2c_1_data = {
231 .bitrate = 100000,
232 .init = pcm038_i2c_1_init,
233 .exit = pcm038_i2c_1_exit,
234};
235
236static struct at24_platform_data board_eeprom = {
237 .byte_len = 4096,
238 .page_size = 32,
239 .flags = AT24_FLAG_ADDR16,
240};
241
242static struct i2c_board_info pcm038_i2c_devices[] = {
243 [0] = {
244 I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
245 .platform_data = &board_eeprom,
246 },
247 [1] = {
248 I2C_BOARD_INFO("rtc-pcf8563", 0x51),
249 .type = "pcf8563"
250 },
251 [2] = {
252 I2C_BOARD_INFO("lm75", 0x4a),
253 .type = "lm75"
254 }
255};
256#endif
257
207static void __init pcm038_init(void) 258static void __init pcm038_init(void)
208{ 259{
209 gpio_fec_active(); 260 gpio_fec_active();
@@ -216,6 +267,14 @@ static void __init pcm038_init(void)
216 mxc_gpio_mode(PE16_AF_OWIRE); 267 mxc_gpio_mode(PE16_AF_OWIRE);
217 mxc_register_device(&mxc_nand_device, &pcm038_nand_board_info); 268 mxc_register_device(&mxc_nand_device, &pcm038_nand_board_info);
218 269
270#ifdef CONFIG_I2C_IMX
271 /* only the i2c master 1 is used on this CPU card */
272 i2c_register_board_info(1, pcm038_i2c_devices,
273 ARRAY_SIZE(pcm038_i2c_devices));
274
275 mxc_register_device(&mxc_i2c_device1, &pcm038_i2c_1_data);
276#endif
277
219 platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); 278 platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
220 279
221#ifdef CONFIG_MACH_PCM970_BASEBOARD 280#ifdef CONFIG_MACH_PCM970_BASEBOARD