i2c access in linux

JoshuaParrish · ‎11-01-2011

Hello everyone,

I'm having issues accessing and using i2c in linux.

What I am trying to do is set up a camera, the ov7725 using the ov772x driver in linux.

I'm using i2c-2 on the imx53 loco board (QSB board).

I'm also using CSI0.

Now to the problem, simply stated I can't see any i2c signals on i2c-2.

-I've changed my board file to include

static struct mxc_camera_platform_data camera_data = {.analog_regulator = "VSD",.mclk = 24000000,.csi = 0,.pwdn = CSI0_PWDN,};
static struct i2c_board_info mxc_i2c2_board_info[] __initdata = { { .type = "ov772x", .addr = 0x21, .platform_data = (void *)&camera_data, },};

Now the issues that I'm having with the camera are the .pwdn var in the struct mxc_camera_platform_data camera_data; also .platform_data = (void *)&camera_data,

but that's with the camera.

The i2c is set up such that

MX53_PAD_KEY_COL3__I2C2_SCL, MX53_PAD_KEY_ROW3__I2C2_SDA,

are in my pads function and

i2c_register_board_info(2, mxc_i2c2_board_info,ARRAY_SIZE(mxc_i2c2_board_info));

is in my init function

When I've made a new kernel file and I have loaded it into my microsd I've found errors loading the ov772x module, however if I use a program called i2c-tools I can't even see i2c signals generated from the board.

That being said, if I flip those ports to GPIO instead of i2c I see my signals changing (based off of echo 1 > /sys/class/gpio109/value)

So I know that those ports are still good ( I haven't damaged them.)

I've dumped my board info file to show the whole code I'm using to setup i2c-2 for use.

Could anyone verify that setting it up this way should work?

Thanks in advance.

/* * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved. */
/* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version.
* This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */
#include <linux/types.h>#include <linux/sched.h>#include <linux/delay.h>#include <linux/pm.h>#include <linux/interrupt.h>#include <linux/irq.h>#include <linux/init.h>#include <linux/input.h>#include <linux/nodemask.h>#include <linux/clk.h>#include <linux/platform_device.h>#include <linux/fsl_devices.h>#include <linux/spi/spi.h>#include <linux/i2c.h>#include <linux/ata.h>#include <linux/mtd/mtd.h>#include <linux/mtd/map.h>#include <linux/mtd/partitions.h>#include <linux/regulator/consumer.h>#include <linux/pmic_external.h>#include <linux/pmic_status.h>#include <linux/ipu.h>#include <linux/mxcfb.h>#include <linux/pwm_backlight.h>#include <linux/fec.h>#include <linux/ahci_platform.h>#include <linux/gpio_keys.h>#include <mach/common.h>#include <mach/hardware.h>#include <asm/irq.h>#include <asm/setup.h>#include <asm/mach-types.h>#include <asm/mach/arch.h>#include <asm/mach/time.h>#include <asm/mach/keypad.h>#include <asm/mach/flash.h>#include <mach/memory.h>#include <mach/gpio.h>#include <mach/mmc.h>#include <mach/mxc_dvfs.h>#include <mach/iomux-mx53.h>#include <mach/i2c.h>#include <mach/mxc_iim.h>
#include "crm_regs.h"#include "devices.h"#include "usb.h"
/*! * @file mach-mx5/mx53_loco.c * * @brief This file contains MX53 loco board specific initialization routines. * * @ingroup MSL_MX53 */
/* MX53 LOCO GPIO PIN configurations */#define NVDD_FAULT (0*32 + 5) /* GPIO1_5 */
#define FEC_INT (1*32 + 4) /* GPIO_2_4 */#define HEADPHONE_DEC_B (1*32 + 5) /* GPIO_2_5 */#define MIC_DEC_B (1*32 + 6) /* GPIO_2_6 */#define USER_UI1 (1*32 + 14) /* GPIO_2_14 */#define USER_UI2 (1*32 + 15) /* GPIO_2_15 */#define MX53_nONKEY (0*32 + 8) /* GPIO_1_8 */
#define SD3_CD (2*32 + 11) /* GPIO_3_11 */#define SD3_WP (2*32 + 12) /* GPIO_3_12 */#define DISP0_POWER_EN (2*32 + 24) /* GPIO_3_24 */#define DISP0_DET_INT (2*32 + 31) /* GPIO_3_31 */
#define DISP0_RESET (4*32 + 0) /* GPIO_5_0 */
#define CSI0_RTSB (5*32 + 9) /* GPIO_6_9 */#define CSI0_PWDN (5*32 + 10) /* GPIO_6_10 */#define ACCL_EN (5*32 + 14) /* GPIO_6_14 */#define ACCL_INT1_IN (5*32 + 15) /* GPIO_6_15 */#define ACCL_INT2_IN (5*32 + 16) /* GPIO_6_16 */
#define LCD_BLT_EN (6*32 + 2) /* GPIO_7_2 */#define FEC_RST (6*32 + 6) /* GPIO_7_6 */#define USER_LED_EN (6*32 + 7) /* GPIO_7_7 */#define USB_PWREN (6*32 + 8) /* GPIO_7_8 */#define NIRQ (6*32 + 11) /* GPIO7_11 */// Added by JP#define IR_CTRL (6*32 + 12) /* GPIO7_12 */
extern int __init mx53_loco_init_da9052(void);
static struct pad_desc mx53_loco_pads[] = { /* FEC */ MX53_PAD_FEC_MDC__FEC_MDC, MX53_PAD_FEC_MDIO__FEC_MDIO, MX53_PAD_FEC_REF_CLK__FEC_REF_CLK, MX53_PAD_FEC_RX_ER__FEC_RX_ER, MX53_PAD_FEC_CRS_DV__FEC_CRS_DV, MX53_PAD_FEC_RXD1__FEC_RXD1, MX53_PAD_FEC_RXD0__FEC_RXD0, MX53_PAD_FEC_TX_EN__FEC_TX_EN, MX53_PAD_FEC_TXD1__FEC_TXD1, MX53_PAD_FEC_TXD0__FEC_TXD0, /* FEC_nRST */ MX53_PAD_ATA_DA_0__GPIO_7_6, /* FEC_nINT */ MX53_PAD_ATA_DATA4__GPIO_2_4, /* AUDMUX5 */ MX53_PAD_KEY_COL0__AUD5_TXC, MX53_PAD_KEY_ROW0__AUD5_TXD, MX53_PAD_KEY_COL1__AUD5_TXFS, MX53_PAD_KEY_ROW1__AUD5_RXD, /* I2C2 */ //MX53_PAD_KEY_COL3__GPIO_4_12, //Make GPIO //MX53_PAD_KEY_ROW3__GPIO_4_13, //Make GPIO MX53_PAD_KEY_COL3__I2C2_SCL, MX53_PAD_KEY_ROW3__I2C2_SDA, /* SD1 */ MX53_PAD_SD1_CMD__SD1_CMD, MX53_PAD_SD1_CLK__SD1_CLK, MX53_PAD_SD1_DATA0__SD1_DATA0, MX53_PAD_SD1_DATA1__SD1_DATA1, MX53_PAD_SD1_DATA2__SD1_DATA2, MX53_PAD_SD1_DATA3__SD1_DATA3, /* SD3 */ MX53_PAD_ATA_DATA8__SD3_DAT0, MX53_PAD_ATA_DATA9__SD3_DAT1, MX53_PAD_ATA_DATA10__SD3_DAT2, MX53_PAD_ATA_DATA11__SD3_DAT3, MX53_PAD_ATA_DATA0__SD3_DAT4, MX53_PAD_ATA_DATA1__SD3_DAT5, MX53_PAD_ATA_DATA2__SD3_DAT6, MX53_PAD_ATA_DATA3__SD3_DAT7, MX53_PAD_ATA_IORDY__SD3_CLK, MX53_PAD_ATA_RESET_B__SD3_CMD, /* SD3_CD */ MX53_PAD_EIM_DA11__GPIO_3_11, /* SD3_WP */ MX53_PAD_EIM_DA12__GPIO_3_12, /* VGA */ MX53_PAD_EIM_OE__DI1_PIN7, MX53_PAD_EIM_RW__DI1_PIN8, /* DISPLB */ MX53_PAD_EIM_D20__SER_DISP0_CS, MX53_PAD_EIM_D21__DISPB0_SER_CLK, MX53_PAD_EIM_D22__DISPB0_SER_DIN, MX53_PAD_EIM_D23__DI0_D0_CS, /* DISP0_POWER_EN */ MX53_PAD_EIM_D24__GPIO_3_24, /* DISP0 DET INT */ MX53_PAD_EIM_D31__GPIO_3_31,
/* LVDS */ MX53_PAD_LVDS0_TX3_P__LVDS0_TX3, MX53_PAD_LVDS0_CLK_P__LVDS0_CLK, MX53_PAD_LVDS0_TX2_P__LVDS0_TX2, MX53_PAD_LVDS0_TX1_P__LVDS0_TX1, MX53_PAD_LVDS0_TX0_P__LVDS0_TX0, MX53_PAD_LVDS1_TX3_P__LVDS1_TX3, MX53_PAD_LVDS1_TX2_P__LVDS1_TX2, MX53_PAD_LVDS1_CLK_P__LVDS1_CLK, MX53_PAD_LVDS1_TX1_P__LVDS1_TX1, MX53_PAD_LVDS1_TX0_P__LVDS1_TX0, /* I2C1 */ MX53_PAD_CSI0_D8__I2C1_SDA, MX53_PAD_CSI0_D9__I2C1_SCL, /* UART1 */ MX53_PAD_CSI0_D10__UART1_TXD, MX53_PAD_CSI0_D11__UART1_RXD, /* CSI0 */ MX53_PAD_CSI0_D12__CSI0_D12, MX53_PAD_CSI0_D13__CSI0_D13, MX53_PAD_CSI0_D14__CSI0_D14, MX53_PAD_CSI0_D15__CSI0_D15, MX53_PAD_CSI0_D16__CSI0_D16, MX53_PAD_CSI0_D17__CSI0_D17, MX53_PAD_CSI0_D18__CSI0_D18, MX53_PAD_CSI0_D19__CSI0_D19, MX53_PAD_CSI0_VSYNC__CSI0_VSYNC, MX53_PAD_CSI0_MCLK__CSI0_HSYNC, MX53_PAD_CSI0_PIXCLK__CSI0_PIXCLK, /* DISPLAY */ MX53_PAD_DI0_DISP_CLK__DI0_DISP_CLK, MX53_PAD_DI0_PIN15__DI0_PIN15, MX53_PAD_DI0_PIN2__DI0_PIN2, MX53_PAD_DI0_PIN3__DI0_PIN3, MX53_PAD_DISP0_DAT0__DISP0_DAT0, MX53_PAD_DISP0_DAT1__DISP0_DAT1, MX53_PAD_DISP0_DAT2__DISP0_DAT2, MX53_PAD_DISP0_DAT3__DISP0_DAT3, MX53_PAD_DISP0_DAT4__DISP0_DAT4, MX53_PAD_DISP0_DAT5__DISP0_DAT5, MX53_PAD_DISP0_DAT6__DISP0_DAT6, MX53_PAD_DISP0_DAT7__DISP0_DAT7, MX53_PAD_DISP0_DAT8__DISP0_DAT8, MX53_PAD_DISP0_DAT9__DISP0_DAT9, MX53_PAD_DISP0_DAT10__DISP0_DAT10, MX53_PAD_DISP0_DAT11__DISP0_DAT11, MX53_PAD_DISP0_DAT12__DISP0_DAT12, MX53_PAD_DISP0_DAT13__DISP0_DAT13, MX53_PAD_DISP0_DAT14__DISP0_DAT14, MX53_PAD_DISP0_DAT15__DISP0_DAT15, MX53_PAD_DISP0_DAT16__DISP0_DAT16, MX53_PAD_DISP0_DAT17__DISP0_DAT17, MX53_PAD_DISP0_DAT18__DISP0_DAT18, MX53_PAD_DISP0_DAT19__DISP0_DAT19, MX53_PAD_DISP0_DAT20__DISP0_DAT20, MX53_PAD_DISP0_DAT21__DISP0_DAT21, MX53_PAD_DISP0_DAT22__DISP0_DAT22, MX53_PAD_DISP0_DAT23__DISP0_DAT23, /* Audio CLK*/ MX53_PAD_GPIO_0__SSI_EXT1_CLK, /* PWM */ MX53_PAD_GPIO_1__PWMO, /* SPDIF */ MX53_PAD_GPIO_7__PLOCK, //MX53_PAD_GPIO_17__SPDIF_OUT1, /* GPIO */ MX53_PAD_ATA_DA_1__GPIO_7_7, MX53_PAD_ATA_DA_2__GPIO_7_8, MX53_PAD_ATA_DATA5__GPIO_2_5, MX53_PAD_ATA_DATA6__GPIO_2_6, MX53_PAD_ATA_DATA14__GPIO_2_14, MX53_PAD_ATA_DATA15__GPIO_2_15, MX53_PAD_ATA_INTRQ__GPIO_7_2, MX53_PAD_EIM_WAIT__GPIO_5_0, MX53_PAD_NANDF_WP_B__GPIO_6_9, MX53_PAD_NANDF_RB0__GPIO_6_10, MX53_PAD_NANDF_CS1__GPIO_6_14, MX53_PAD_NANDF_CS2__GPIO_6_15, MX53_PAD_NANDF_CS3__GPIO_6_16, MX53_PAD_GPIO_5__GPIO_1_5, MX53_PAD_GPIO_16__GPIO_7_11, MX53_PAD_GPIO_8__GPIO_1_8, /*IR_CTRL*/ MX53_PAD_GPIO_17__GPIO_7_12,};
static struct fb_videomode video_modes[] = { { /* NTSC TV output */ "TV-NTSC", 60, 720, 480, 74074, 122, 15, 18, 26, 1, 1, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_INTERLACED, 0,}, { /* PAL TV output */ "TV-PAL", 50, 720, 576, 74074, 132, 11, 22, 26, 1, 1, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_INTERLACED | FB_VMODE_ODD_FLD_FIRST, 0,}, { /* 1080i50 TV output */ "1080I50", 50, 1920, 1080, 13468, 192, 527, 20, 24, 1, 1, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_INTERLACED | FB_VMODE_ODD_FLD_FIRST, 0,}, { /* 1080i60 TV output */ "1080I60", 60, 1920, 1080, 13468, 192, 87, 20, 24, 1, 1, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_INTERLACED | FB_VMODE_ODD_FLD_FIRST, 0,}, { /* 800x480 @ 57 Hz , pixel clk @ 27MHz */ "CLAA-WVGA", 57, 800, 480, 37037, 40, 60, 10, 10, 20, 10, FB_SYNC_CLK_LAT_FALL, FB_VMODE_NONINTERLACED, 0,}, { /* 800x480 @ 60 Hz , pixel clk @ 32MHz */ "SEIKO-WVGA", 60, 800, 480, 29850, 89, 164, 23, 10, 10, 10, FB_SYNC_CLK_LAT_FALL, FB_VMODE_NONINTERLACED, 0,}, { "XGA", 60, 1024, 768, 15385, 220, 40, 21, 7, 60, 10, 0, FB_VMODE_NONINTERLACED, 0,}, { /* 720p30 TV output */ "720P30", 30, 1280, 720, 13468, 260, 1759, 25, 4, 1, 1, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, 0,}, { "720P60", 60, 1280, 720, 13468, 260, 109, 25, 4, 1, 1, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, 0,}, { /* VGA 1280x1024 108M pixel clk output */ "SXGA", 60, 1280, 1024, 9259, 48, 248, 1, 38, 112, 3, 0, FB_VMODE_NONINTERLACED, 0,}, { /* 1600x1200 @ 60 Hz 162M pixel clk*/ "UXGA", 60, 1600, 1200, 6172, 304, 64, 1, 46, 192, 3, FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, 0,}, { /* 1080p24 TV output */ "1080P24", 24, 1920, 1080, 13468, 192, 637, 38, 6, 1, 1, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, 0,}, { /* 1080p25 TV output */ "1080P25", 25, 1920, 1080, 13468, 192, 527, 38, 6, 1, 1, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, 0,}, { /* 1080p30 TV output */ "1080P30", 30, 1920, 1080, 13468, 192, 87, 38, 6, 1, 1, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, 0,}, { "1080P60", 60, 1920, 1080, 7692, 100, 40, 30, 3, 10, 2, 0, FB_VMODE_NONINTERLACED, 0,},};
static struct platform_pwm_backlight_data mxc_pwm_backlight_data = { .pwm_id = 1, .max_brightness = 255, .dft_brightness = 128, .pwm_period_ns = 50000,};
extern void mx5_ipu_reset(void);static struct mxc_ipu_config mxc_ipu_data = { .rev = 3, .reset = mx5_ipu_reset,};
extern void mx5_vpu_reset(void);static struct mxc_vpu_platform_data mxc_vpu_data = { .reset = mx5_vpu_reset,};
static struct fec_platform_data fec_data = { .phy = PHY_INTERFACE_MODE_RMII,};
static struct mxc_dvfs_platform_data dvfs_core_data = { .reg_id = "DA9052_BUCK_CORE", .clk1_id = "cpu_clk", .clk2_id = "gpc_dvfs_clk", .gpc_cntr_offset = MXC_GPC_CNTR_OFFSET, .gpc_vcr_offset = MXC_GPC_VCR_OFFSET, .ccm_cdcr_offset = MXC_CCM_CDCR_OFFSET, .ccm_cacrr_offset = MXC_CCM_CACRR_OFFSET, .ccm_cdhipr_offset = MXC_CCM_CDHIPR_OFFSET, .prediv_mask = 0x1F800, .prediv_offset = 11, .prediv_val = 3, .div3ck_mask = 0xE0000000, .div3ck_offset = 29, .div3ck_val = 2, .emac_val = 0x08, .upthr_val = 25, .dnthr_val = 9, .pncthr_val = 33, .upcnt_val = 10, .dncnt_val = 10, .delay_time = 30,};
static struct mxc_bus_freq_platform_data bus_freq_data = { .gp_reg_id = "DA9052_BUCK_CORE", .lp_reg_id = "DA9052_BUCK_PRO",};
static struct tve_platform_data tve_data = { .dac_reg = "DA9052_LDO7",};
static struct ldb_platform_data ldb_data = { .ext_ref = 1,};
static void mxc_iim_enable_fuse(void){ u32 reg;
if (!ccm_base) return;
/* enable fuse blown */ reg = readl(ccm_base + 0x64); reg |= 0x10; writel(reg, ccm_base + 0x64);}
static void mxc_iim_disable_fuse(void){ u32 reg;
if (!ccm_base) return; /* enable fuse blown */ reg = readl(ccm_base + 0x64); reg &= ~0x10; writel(reg, ccm_base + 0x64);}
static struct mxc_iim_data iim_data = { .bank_start = MXC_IIM_MX53_BANK_START_ADDR, .bank_end = MXC_IIM_MX53_BANK_END_ADDR, .enable_fuse = mxc_iim_enable_fuse, .disable_fuse = mxc_iim_disable_fuse,};
static struct resource mxcfb_resources[] = { [0] = { .flags = IORESOURCE_MEM, },};
static struct mxc_fb_platform_data fb_data[] = { { .interface_pix_fmt = IPU_PIX_FMT_RGB565, .mode_str = "CLAA-WVGA", .mode = video_modes, .num_modes = ARRAY_SIZE(video_modes), }, { .interface_pix_fmt = IPU_PIX_FMT_BGR24, .mode_str = "XGA", .mode = video_modes, .num_modes = ARRAY_SIZE(video_modes), },};
extern int primary_di;static int __init mxc_init_fb(void){ if (!machine_is_mx53_loco()) return 0;
if (primary_di) { printk(KERN_INFO "DI1 is primary\n"); /* DI1 -> DP-BG channel: */ mxc_fb_devices[1].num_resources = ARRAY_SIZE(mxcfb_resources); mxc_fb_devices[1].resource = mxcfb_resources; mxc_register_device(&mxc_fb_devices[1], &fb_data[1]);
/* DI0 -> DC channel: */ mxc_register_device(&mxc_fb_devices[0], &fb_data[0]); } else { printk(KERN_INFO "DI0 is primary\n");
/* DI0 -> DP-BG channel: */ mxc_fb_devices[0].num_resources = ARRAY_SIZE(mxcfb_resources); mxc_fb_devices[0].resource = mxcfb_resources; mxc_register_device(&mxc_fb_devices[0], &fb_data[0]);
/* DI1 -> DC channel: */ mxc_register_device(&mxc_fb_devices[1], &fb_data[1]); }
/* * DI0/1 DP-FG channel: */ mxc_register_device(&mxc_fb_devices[2], NULL);
return 0;}device_initcall(mxc_init_fb);
static void sii9022_hdmi_reset(void){ gpio_set_value(DISP0_RESET, 0); msleep(10); gpio_set_value(DISP0_RESET, 1); msleep(10);}
static struct mxc_lcd_platform_data sii9022_hdmi_data = { .reset = sii9022_hdmi_reset,};
static struct imxi2c_platform_data mxci2c_data = { .bitrate = 100000,};
static struct i2c_board_info mxc_i2c0_board_info[] __initdata = { { .type = "mma8450", .addr = 0x1C, },};
static struct i2c_board_info mxc_i2c1_board_info[] __initdata = { { .type = "sgtl5000-i2c", .addr = 0x0a, }, { .type = "sii9022", .addr = 0x39, .irq = IOMUX_TO_IRQ_V3(DISP0_DET_INT), .platform_data = &sii9022_hdmi_data, },};// ADDED by Joshua Parrish Project ISHKA for camera OV7725
static struct mxc_camera_platform_data camera_data = {.analog_regulator = "VSD",.mclk = 24000000,.csi = 0,.pwdn = CSI0_PWDN,};
static struct i2c_board_info mxc_i2c2_board_info[] __initdata = { { .type = "ov772x", .addr = 0x21, .platform_data = (void *)&camera_data, },};// ----- Completed
static int sdhc_write_protect(struct device *dev){ int ret = 0;
if (to_platform_device(dev)->id == 2) ret = gpio_get_value(SD3_WP);
return ret;}
static unsigned int sdhc_get_card_det_status(struct device *dev){ int ret = 0;
if (to_platform_device(dev)->id == 2) ret = gpio_get_value(SD3_CD);
return ret;}
static struct mxc_mmc_platform_data mmc1_data = { .ocr_mask = MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30 | MMC_VDD_31_32, .caps = MMC_CAP_4_BIT_DATA, .min_clk = 400000, .max_clk = 50000000, .card_inserted_state = 1, .clock_mmc = "esdhc_clk", .power_mmc = NULL,};
static struct mxc_mmc_platform_data mmc3_data = { .ocr_mask = MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30 | MMC_VDD_31_32, .caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA | MMC_CAP_DATA_DDR, .min_clk = 400000, .max_clk = 50000000, .card_inserted_state = 0, .status = sdhc_get_card_det_status, .wp_status = sdhc_write_protect, .clock_mmc = "esdhc_clk",};
static int headphone_det_status(void){ return (gpio_get_value(HEADPHONE_DEC_B) == 0);}
static int mxc_sgtl5000_init(void);
static struct mxc_audio_platform_data sgtl5000_data = { .ssi_num = 1, .src_port = 2, .ext_port = 5, .hp_irq = IOMUX_TO_IRQ_V3(HEADPHONE_DEC_B), .hp_status = headphone_det_status, .init = mxc_sgtl5000_init,};
static int mxc_sgtl5000_init(void){ struct clk *ssi_ext1; int rate;
ssi_ext1 = clk_get(NULL, "ssi_ext1_clk"); if (IS_ERR(ssi_ext1)) return -1;
rate = clk_round_rate(ssi_ext1, 24000000); if (rate < 8000000 || rate > 27000000) { printk(KERN_ERR "Error: SGTL5000 mclk freq %d out of range!\n", rate); clk_put(ssi_ext1); return -1; }
clk_set_rate(ssi_ext1, rate); clk_enable(ssi_ext1); sgtl5000_data.sysclk = rate;
return 0;}
static struct platform_device mxc_sgtl5000_device = { .name = "imx-3stack-sgtl5000",};
static struct mxc_asrc_platform_data mxc_asrc_data = { .channel_bits = 4, .clk_map_ver = 2,};
static struct mxc_spdif_platform_data mxc_spdif_data = { .spdif_tx = 1, .spdif_rx = 0, .spdif_clk_44100 = -1, /* Souce from CKIH1 for 44.1K */ /* Source from CCM spdif_clk (24M) for 48k and 32k * It's not accurate */ .spdif_clk_48000 = 1, .spdif_clkid = 0, .spdif_clk = NULL, /* spdif bus clk */};
static void mx53_loco_usbh1_vbus(bool on){ if (on) gpio_set_value(USB_PWREN, 1); else gpio_set_value(USB_PWREN, 0);}
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)#define GPIO_BUTTON(gpio_num, ev_code, act_low, descr, wake) \{ \ .gpio = gpio_num, \ .type = EV_KEY, \ .code = ev_code, \ .active_low = act_low, \ .desc = "btn " descr, \ .wakeup = wake, \}
static struct gpio_keys_button loco_buttons[] = { GPIO_BUTTON(MX53_nONKEY, KEY_POWER, 1, "power", 0), GPIO_BUTTON(USER_UI1, KEY_VOLUMEUP, 1, "volume-up", 0), GPIO_BUTTON(USER_UI2, KEY_VOLUMEDOWN, 1, "volume-down", 0),};
static struct gpio_keys_platform_data loco_button_data = { .buttons = loco_buttons, .nbuttons = ARRAY_SIZE(loco_buttons),};
static struct platform_device loco_button_device = { .name = "gpio-keys", .id = -1, .num_resources = 0, .dev = { .platform_data = &loco_button_data, }};
static void __init loco_add_device_buttons(void){ platform_device_register(&loco_button_device);}#elsestatic void __init loco_add_device_buttons(void) {}#endif

/*! * Board specific fixup function. It is called by \b setup_arch() in * setup.c file very early on during kernel starts. It allows the user to * statically fill in the proper values for the passed-in parameters. None of * the parameters is used currently. * * @param desc pointer to \b struct \b machine_desc * @param tags pointer to \b struct \b tag * @param cmdline pointer to the command line * @param mi pointer to \b struct \b meminfo */static void __init fixup_mxc_board(struct machine_desc *desc, struct tag *tags, char **cmdline, struct meminfo *mi){ struct tag *t; struct tag *mem_tag = 0; int total_mem = SZ_1G; int left_mem = 0; int gpu_mem = SZ_128M; int fb_mem = SZ_32M; char *str;
mxc_set_cpu_type(MXC_CPU_MX53);
for_each_tag(mem_tag, tags) { if (mem_tag->hdr.tag == ATAG_MEM) { total_mem = mem_tag->u.mem.size; left_mem = total_mem - gpu_mem - fb_mem; break; } }
for_each_tag(t, tags) { if (t->hdr.tag == ATAG_CMDLINE) { str = t->u.cmdline.cmdline; str = strstr(str, "mem="); if (str != NULL) { str += 4; left_mem = memparse(str, &str); if (left_mem == 0 || left_mem > total_mem) left_mem = total_mem - gpu_mem - fb_mem; }
str = t->u.cmdline.cmdline; str = strstr(str, "gpu_memory="); if (str != NULL) { str += 11; gpu_mem = memparse(str, &str); }
break; } }
if (mem_tag) { fb_mem = total_mem - left_mem - gpu_mem; if (fb_mem < 0) { gpu_mem = total_mem - left_mem; fb_mem = 0; } mem_tag->u.mem.size = left_mem;
/*reserve memory for gpu*/ gpu_device.resource[5].start = mem_tag->u.mem.start + left_mem; gpu_device.resource[5].end = gpu_device.resource[5].start + gpu_mem - 1;#if defined(CONFIG_FB_MXC_SYNC_PANEL) || \ defined(CONFIG_FB_MXC_SYNC_PANEL_MODULE) if (fb_mem) { mxcfb_resources[0].start = gpu_device.resource[5].end + 1; mxcfb_resources[0].end = mxcfb_resources[0].start + fb_mem - 1; } else { mxcfb_resources[0].start = 0; mxcfb_resources[0].end = 0; }#endif }}
static void __init mx53_loco_io_init(void){ mxc_iomux_v3_setup_multiple_pads(mx53_loco_pads, ARRAY_SIZE(mx53_loco_pads));
/* SD3 */ gpio_request(SD3_CD, "sd3-cd"); gpio_direction_input(SD3_CD); gpio_request(SD3_WP, "sd3-wp"); gpio_direction_input(SD3_WP);
/* reset FEC PHY */ gpio_request(FEC_RST, "fec-rst"); gpio_direction_output(FEC_RST, 0); gpio_set_value(FEC_RST, 0); msleep(1); gpio_set_value(FEC_RST, 1);
/* headphone_det_b */ gpio_request(HEADPHONE_DEC_B, "headphone-dec"); gpio_direction_input(HEADPHONE_DEC_B);
/* USB PWR enable */ gpio_request(USB_PWREN, "usb-pwr"); gpio_direction_output(USB_PWREN, 0);
/* Sii9022 HDMI controller */ gpio_request(DISP0_RESET, "disp0-reset"); gpio_direction_output(DISP0_RESET, 0); gpio_request(DISP0_DET_INT, "disp0-detect"); gpio_direction_input(DISP0_DET_INT);
/* LCD panel power enable */ gpio_request(DISP0_POWER_EN, "disp0-power-en"); gpio_direction_output(DISP0_POWER_EN, 1);
// Section added by JP to turn off IR to start /* IR_CTRL */ /* gpio_request(IR_CTRL, "IR_CTRL"); gpio_direction_output(IR_CTRL, 0); gpio_set_value(IR_CTRL, 0); */}
/*! * Board specific initialization. */static void __init mxc_board_init(void){ mxc_ipu_data.di_clk[0] = clk_get(NULL, "ipu_di0_clk"); mxc_ipu_data.di_clk[1] = clk_get(NULL, "ipu_di1_clk"); mxc_ipu_data.csi_clk[0] = clk_get(NULL, "ssi_ext1_clk"); mxc_spdif_data.spdif_core_clk = clk_get(NULL, "spdif_xtal_clk"); clk_put(mxc_spdif_data.spdif_core_clk);
mxcsdhc3_device.resource[2].start = IOMUX_TO_IRQ_V3(SD3_CD); mxcsdhc3_device.resource[2].end = IOMUX_TO_IRQ_V3(SD3_CD);
mxc_cpu_common_init(); mx53_loco_io_init();
mxc_register_device(&mxc_dma_device, NULL); mxc_register_device(&mxc_wdt_device, NULL); mxc_register_device(&mxci2c_devices[0], &mxci2c_data); mxc_register_device(&mxci2c_devices[1], &mxci2c_data); mxc_register_device(&mxci2c_devices[2], &mxci2c_data); //Added by JP
mx53_loco_init_da9052();
mxc_register_device(&mxc_rtc_device, NULL); mxc_register_device(&mxc_ipu_device, &mxc_ipu_data); mxc_register_device(&mxc_ldb_device, &ldb_data); mxc_register_device(&mxc_tve_device, &tve_data); mxc_register_device(&mxcvpu_device, &mxc_vpu_data); mxc_register_device(&gpu_device, &z160_revision); mxc_register_device(&mxcscc_device, NULL); mxc_register_device(&mxc_dvfs_core_device, &dvfs_core_data); mxc_register_device(&busfreq_device, &bus_freq_data); mxc_register_device(&mxc_iim_device, &iim_data); mxc_register_device(&mxc_pwm2_device, NULL); mxc_register_device(&mxc_pwm1_backlight_device, &mxc_pwm_backlight_data); mxc_register_device(&mxcsdhc1_device, &mmc1_data); mxc_register_device(&mxcsdhc3_device, &mmc3_data); mxc_register_device(&mxc_ssi1_device, NULL); mxc_register_device(&mxc_ssi2_device, NULL); mxc_register_device(&mxc_alsa_spdif_device, &mxc_spdif_data); mxc_register_device(&ahci_fsl_device, &sata_data); mxc_register_device(&mxc_fec_device, &fec_data); /* ASRC is only available for MX53 TO2.0 */ if (cpu_is_mx53_rev(CHIP_REV_2_0) >= 1) { mxc_asrc_data.asrc_core_clk = clk_get(NULL, "asrc_clk"); clk_put(mxc_asrc_data.asrc_core_clk); mxc_asrc_data.asrc_audio_clk = clk_get(NULL, "asrc_serial_clk"); clk_put(mxc_asrc_data.asrc_audio_clk); mxc_register_device(&mxc_asrc_device, &mxc_asrc_data); }
i2c_register_board_info(0, mxc_i2c0_board_info, ARRAY_SIZE(mxc_i2c0_board_info)); i2c_register_board_info(1, mxc_i2c1_board_info, ARRAY_SIZE(mxc_i2c1_board_info)); i2c_register_board_info(2, mxc_i2c2_board_info, ARRAY_SIZE(mxc_i2c2_board_info));
mxc_register_device(&mxc_sgtl5000_device, &sgtl5000_data); mx5_usb_dr_init(); mx5_set_host1_vbus_func(mx53_loco_usbh1_vbus); mx5_usbh1_init(); mxc_register_device(&mxc_v4l2_device, NULL); mxc_register_device(&mxc_v4l2out_device, NULL); loco_add_device_buttons();}
static void __init mx53_loco_timer_init(void){ struct clk *uart_clk;
mx53_clocks_init(32768, 24000000, 0, 0);
uart_clk = clk_get_sys("mxcintuart.0", NULL); early_console_setup(MX53_BASE_ADDR(UART1_BASE_ADDR), uart_clk);}
static struct sys_timer mxc_timer = { .init = mx53_loco_timer_init,};
/* * The following uses standard kernel macros define in arch.h in order to * initialize __mach_desc_MX53_LOCO data structure. */MACHINE_START(MX53_LOCO, "Freescale MX53 LOCO Board") /* Maintainer: Freescale Semiconductor, Inc. */ .fixup = fixup_mxc_board, .map_io = mx5_map_io, .init_irq = mx5_init_irq, .init_machine = mxc_board_init, .timer = &mxc_timer,MACHINE_END

JoshuaParrish · ‎11-03-2011

Solved,

Even though the pins in the board file are called i2c2 they are really located at i2c-1 in linux. and insantiated in i2c-1 in the board file.

JoshuaParrish · ‎11-02-2011

Done, It is powered correctly.

I've also noticed this morning that sound is no longer working. Could packages installed cause sound to no longer work? Sound is also on i2c, but it's on i2c1.

LilyZhang · ‎11-01-2011

Because I2C2 was tested on QS board, suggest you check whether your OV camera sensor is powered up well.