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alistair23-linux/arch/arm/mach-imx/mach-pcm037.c
Bartosz Golaszewski 3b8b2e1e02 ARM: imx: pcm037: use device properties for at24 eeprom 
We want to work towards phasing out the at24_platform_data structure.
There are few users and its contents can be represented using generic
device properties. Using device properties only will allow us to
significantly simplify the at24 configuration code.

Remove the at24_platform_data structure and replace it with an array
of property entries. Specify the exact model instead of the "at24"
wildcard and drop the byte_len/size property, as the model name already
implies the EEPROM's size.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2018-04-18 11:18:30 +08:00

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/*
* Copyright (C) 2008 Sascha Hauer, Pengutronix
*
* 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.
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/plat-ram.h>
#include <linux/memory.h>
#include <linux/gpio.h>
#include <linux/smsc911x.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/property.h>
#include <linux/delay.h>
#include <linux/spi/spi.h>
#include <linux/irq.h>
#include <linux/can/platform/sja1000.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/gfp.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
#include "common.h"
#include "devices-imx31.h"
#include "ehci.h"
#include "hardware.h"
#include "iomux-mx3.h"
#include "pcm037.h"
#include "ulpi.h"
static enum pcm037_board_variant pcm037_instance = PCM037_PCM970;
static int __init pcm037_variant_setup(char *str)
{
if (!strcmp("eet", str))
pcm037_instance = PCM037_EET;
else if (strcmp("pcm970", str))
pr_warn("Unknown pcm037 baseboard variant %s\n", str);
return 1;
}
/* Supported values: "pcm970" (default) and "eet" */
__setup("pcm037_variant=", pcm037_variant_setup);
enum pcm037_board_variant pcm037_variant(void)
{
return pcm037_instance;
}
/* UART1 with RTS/CTS handshake signals */
static unsigned int pcm037_uart1_handshake_pins[] = {
MX31_PIN_CTS1__CTS1,
MX31_PIN_RTS1__RTS1,
MX31_PIN_TXD1__TXD1,
MX31_PIN_RXD1__RXD1,
};
/* UART1 without RTS/CTS handshake signals */
static unsigned int pcm037_uart1_pins[] = {
MX31_PIN_TXD1__TXD1,
MX31_PIN_RXD1__RXD1,
};
static unsigned int pcm037_pins[] = {
/* I2C */
MX31_PIN_CSPI2_MOSI__SCL,
MX31_PIN_CSPI2_MISO__SDA,
MX31_PIN_CSPI2_SS2__I2C3_SDA,
MX31_PIN_CSPI2_SCLK__I2C3_SCL,
/* SDHC1 */
MX31_PIN_SD1_DATA3__SD1_DATA3,
MX31_PIN_SD1_DATA2__SD1_DATA2,
MX31_PIN_SD1_DATA1__SD1_DATA1,
MX31_PIN_SD1_DATA0__SD1_DATA0,
MX31_PIN_SD1_CLK__SD1_CLK,
MX31_PIN_SD1_CMD__SD1_CMD,
IOMUX_MODE(MX31_PIN_SCK6, IOMUX_CONFIG_GPIO), /* card detect */
IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO), /* write protect */
/* SPI1 */
MX31_PIN_CSPI1_MOSI__MOSI,
MX31_PIN_CSPI1_MISO__MISO,
MX31_PIN_CSPI1_SCLK__SCLK,
MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
MX31_PIN_CSPI1_SS0__SS0,
MX31_PIN_CSPI1_SS1__SS1,
MX31_PIN_CSPI1_SS2__SS2,
/* UART2 */
MX31_PIN_TXD2__TXD2,
MX31_PIN_RXD2__RXD2,
MX31_PIN_CTS2__CTS2,
MX31_PIN_RTS2__RTS2,
/* UART3 */
MX31_PIN_CSPI3_MOSI__RXD3,
MX31_PIN_CSPI3_MISO__TXD3,
MX31_PIN_CSPI3_SCLK__RTS3,
MX31_PIN_CSPI3_SPI_RDY__CTS3,
/* LAN9217 irq pin */
IOMUX_MODE(MX31_PIN_GPIO3_1, IOMUX_CONFIG_GPIO),
/* Onewire */
MX31_PIN_BATT_LINE__OWIRE,
/* Framebuffer */
MX31_PIN_LD0__LD0,
MX31_PIN_LD1__LD1,
MX31_PIN_LD2__LD2,
MX31_PIN_LD3__LD3,
MX31_PIN_LD4__LD4,
MX31_PIN_LD5__LD5,
MX31_PIN_LD6__LD6,
MX31_PIN_LD7__LD7,
MX31_PIN_LD8__LD8,
MX31_PIN_LD9__LD9,
MX31_PIN_LD10__LD10,
MX31_PIN_LD11__LD11,
MX31_PIN_LD12__LD12,
MX31_PIN_LD13__LD13,
MX31_PIN_LD14__LD14,
MX31_PIN_LD15__LD15,
MX31_PIN_LD16__LD16,
MX31_PIN_LD17__LD17,
MX31_PIN_VSYNC3__VSYNC3,
MX31_PIN_HSYNC__HSYNC,
MX31_PIN_FPSHIFT__FPSHIFT,
MX31_PIN_DRDY0__DRDY0,
MX31_PIN_D3_REV__D3_REV,
MX31_PIN_CONTRAST__CONTRAST,
MX31_PIN_D3_SPL__D3_SPL,
MX31_PIN_D3_CLS__D3_CLS,
MX31_PIN_LCS0__GPIO3_23,
/* GPIO */
IOMUX_MODE(MX31_PIN_ATA_DMACK, IOMUX_CONFIG_GPIO),
/* OTG */
MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
MX31_PIN_USBOTG_CLK__USBOTG_CLK,
MX31_PIN_USBOTG_DIR__USBOTG_DIR,
MX31_PIN_USBOTG_NXT__USBOTG_NXT,
MX31_PIN_USBOTG_STP__USBOTG_STP,
/* USB host 2 */
IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_STXD3, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_SRXD3, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_SCK3, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_SFS3, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_STXD6, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_SRXD6, IOMUX_CONFIG_FUNC),
};
static struct physmap_flash_data pcm037_flash_data = {
.width = 2,
};
static struct resource pcm037_flash_resource = {
.start = 0xa0000000,
.end = 0xa1ffffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device pcm037_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &pcm037_flash_data,
},
.resource = &pcm037_flash_resource,
.num_resources = 1,
};
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
static struct resource smsc911x_resources[] = {
{
.start = MX31_CS1_BASE_ADDR + 0x300,
.end = MX31_CS1_BASE_ADDR + 0x300 + SZ_64K - 1,
.flags = IORESOURCE_MEM,
}, {
/* irq number is run-time assigned */
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
},
};
static struct smsc911x_platform_config smsc911x_info = {
.flags = SMSC911X_USE_32BIT | SMSC911X_FORCE_INTERNAL_PHY |
SMSC911X_SAVE_MAC_ADDRESS,
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
.phy_interface = PHY_INTERFACE_MODE_MII,
};
static struct platform_device pcm037_eth = {
.name = "smsc911x",
.id = -1,
.num_resources = ARRAY_SIZE(smsc911x_resources),
.resource = smsc911x_resources,
.dev = {
.platform_data = &smsc911x_info,
},
};
static struct platdata_mtd_ram pcm038_sram_data = {
.bankwidth = 2,
};
static struct resource pcm038_sram_resource = {
.start = MX31_CS4_BASE_ADDR,
.end = MX31_CS4_BASE_ADDR + 512 * 1024 - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device pcm037_sram_device = {
.name = "mtd-ram",
.id = 0,
.dev = {
.platform_data = &pcm038_sram_data,
},
.num_resources = 1,
.resource = &pcm038_sram_resource,
};
static const struct mxc_nand_platform_data
pcm037_nand_board_info __initconst = {
.width = 1,
.hw_ecc = 1,
};
static const struct imxi2c_platform_data pcm037_i2c1_data __initconst = {
.bitrate = 100000,
};
static const struct imxi2c_platform_data pcm037_i2c2_data __initconst = {
.bitrate = 20000,
};
static const struct property_entry board_eeprom_properties[] = {
PROPERTY_ENTRY_U32("pagesize", 32),
{ }
};
static struct i2c_board_info pcm037_i2c_devices[] = {
{
I2C_BOARD_INFO("24c32", 0x52), /* E0=0, E1=1, E2=0 */
.properties = board_eeprom_properties,
}, {
I2C_BOARD_INFO("pcf8563", 0x51),
}
};
/* Not connected by default */
#ifdef PCM970_SDHC_RW_SWITCH
static int pcm970_sdhc1_get_ro(struct device *dev)
{
return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_SFS6));
}
#endif
#define SDHC1_GPIO_WP IOMUX_TO_GPIO(MX31_PIN_SFS6)
#define SDHC1_GPIO_DET IOMUX_TO_GPIO(MX31_PIN_SCK6)
static int pcm970_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
void *data)
{
int ret;
ret = gpio_request(SDHC1_GPIO_DET, "sdhc-detect");
if (ret)
return ret;
gpio_direction_input(SDHC1_GPIO_DET);
#ifdef PCM970_SDHC_RW_SWITCH
ret = gpio_request(SDHC1_GPIO_WP, "sdhc-wp");
if (ret)
goto err_gpio_free;
gpio_direction_input(SDHC1_GPIO_WP);
#endif
ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SCK6)), detect_irq,
IRQF_TRIGGER_FALLING, "sdhc-detect", data);
if (ret)
goto err_gpio_free_2;
return 0;
err_gpio_free_2:
#ifdef PCM970_SDHC_RW_SWITCH
gpio_free(SDHC1_GPIO_WP);
err_gpio_free:
#endif
gpio_free(SDHC1_GPIO_DET);
return ret;
}
static void pcm970_sdhc1_exit(struct device *dev, void *data)
{
free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SCK6)), data);
gpio_free(SDHC1_GPIO_DET);
gpio_free(SDHC1_GPIO_WP);
}
static const struct imxmmc_platform_data sdhc_pdata __initconst = {
#ifdef PCM970_SDHC_RW_SWITCH
.get_ro = pcm970_sdhc1_get_ro,
#endif
.init = pcm970_sdhc1_init,
.exit = pcm970_sdhc1_exit,
};
static struct platform_device *devices[] __initdata = {
&pcm037_flash,
&pcm037_sram_device,
};
static const struct fb_videomode fb_modedb[] = {
{
/* 240x320 @ 60 Hz Sharp */
.name = "Sharp-LQ035Q7DH06-QVGA",
.refresh = 60,
.xres = 240,
.yres = 320,
.pixclock = 185925,
.left_margin = 9,
.right_margin = 16,
.upper_margin = 7,
.lower_margin = 9,
.hsync_len = 1,
.vsync_len = 1,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_SHARP_MODE |
FB_SYNC_CLK_INVERT | FB_SYNC_CLK_IDLE_EN,
.vmode = FB_VMODE_NONINTERLACED,
.flag = 0,
}, {
/* 240x320 @ 60 Hz */
.name = "TX090",
.refresh = 60,
.xres = 240,
.yres = 320,
.pixclock = 38255,
.left_margin = 144,
.right_margin = 0,
.upper_margin = 7,
.lower_margin = 40,
.hsync_len = 96,
.vsync_len = 1,
.sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
.vmode = FB_VMODE_NONINTERLACED,
.flag = 0,
}, {
/* 240x320 @ 60 Hz */
.name = "CMEL-OLED",
.refresh = 60,
.xres = 240,
.yres = 320,
.pixclock = 185925,
.left_margin = 9,
.right_margin = 16,
.upper_margin = 7,
.lower_margin = 9,
.hsync_len = 1,
.vsync_len = 1,
.sync = FB_SYNC_OE_ACT_HIGH | FB_SYNC_CLK_INVERT,
.vmode = FB_VMODE_NONINTERLACED,
.flag = 0,
},
};
static struct mx3fb_platform_data mx3fb_pdata = {
.name = "Sharp-LQ035Q7DH06-QVGA",
.mode = fb_modedb,
.num_modes = ARRAY_SIZE(fb_modedb),
};
static struct resource pcm970_sja1000_resources[] = {
{
.start = MX31_CS5_BASE_ADDR,
.end = MX31_CS5_BASE_ADDR + 0x100 - 1,
.flags = IORESOURCE_MEM,
}, {
/* irq number is run-time assigned */
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
},
};
struct sja1000_platform_data pcm970_sja1000_platform_data = {
.osc_freq = 16000000,
.ocr = OCR_TX1_PULLDOWN | OCR_TX0_PUSHPULL,
.cdr = CDR_CBP,
};
static struct platform_device pcm970_sja1000 = {
.name = "sja1000_platform",
.dev = {
.platform_data = &pcm970_sja1000_platform_data,
},
.resource = pcm970_sja1000_resources,
.num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
};
static int pcm037_otg_init(struct platform_device *pdev)
{
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
}
static struct mxc_usbh_platform_data otg_pdata __initdata = {
.init = pcm037_otg_init,
.portsc = MXC_EHCI_MODE_ULPI,
};
static int pcm037_usbh2_init(struct platform_device *pdev)
{
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
}
static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
.init = pcm037_usbh2_init,
.portsc = MXC_EHCI_MODE_ULPI,
};
static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_ULPI,
};
static bool otg_mode_host __initdata;
static int __init pcm037_otg_mode(char *options)
{
if (!strcmp(options, "host"))
otg_mode_host = true;
else if (!strcmp(options, "device"))
otg_mode_host = false;
else
pr_info("otg_mode neither \"host\" nor \"device\". "
"Defaulting to device\n");
return 1;
}
__setup("otg_mode=", pcm037_otg_mode);
static struct regulator_consumer_supply dummy_supplies[] = {
REGULATOR_SUPPLY("vdd33a", "smsc911x"),
REGULATOR_SUPPLY("vddvario", "smsc911x"),
};
/*
* Board specific initialization.
*/
static void __init pcm037_init(void)
{
imx31_soc_init();
regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
mxc_iomux_set_gpr(MUX_PGP_UH2, 1);
mxc_iomux_setup_multiple_pins(pcm037_pins, ARRAY_SIZE(pcm037_pins),
"pcm037");
#define H2_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS \
| PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, H2_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, H2_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, H2_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBH2_STP, H2_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, H2_PAD_CFG); /* USBH2_DATA0 */
mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, H2_PAD_CFG); /* USBH2_DATA1 */
mxc_iomux_set_pad(MX31_PIN_SRXD6, H2_PAD_CFG); /* USBH2_DATA2 */
mxc_iomux_set_pad(MX31_PIN_STXD6, H2_PAD_CFG); /* USBH2_DATA3 */
mxc_iomux_set_pad(MX31_PIN_SFS3, H2_PAD_CFG); /* USBH2_DATA4 */
mxc_iomux_set_pad(MX31_PIN_SCK3, H2_PAD_CFG); /* USBH2_DATA5 */
mxc_iomux_set_pad(MX31_PIN_SRXD3, H2_PAD_CFG); /* USBH2_DATA6 */
mxc_iomux_set_pad(MX31_PIN_STXD3, H2_PAD_CFG); /* USBH2_DATA7 */
if (pcm037_variant() == PCM037_EET)
mxc_iomux_setup_multiple_pins(pcm037_uart1_pins,
ARRAY_SIZE(pcm037_uart1_pins), "pcm037_uart1");
else
mxc_iomux_setup_multiple_pins(pcm037_uart1_handshake_pins,
ARRAY_SIZE(pcm037_uart1_handshake_pins),
"pcm037_uart1");
platform_add_devices(devices, ARRAY_SIZE(devices));
imx31_add_imx2_wdt();
imx31_add_imx_uart0(&uart_pdata);
/* XXX: should't this have .flags = 0 (i.e. no RTSCTS) on PCM037_EET? */
imx31_add_imx_uart1(&uart_pdata);
imx31_add_imx_uart2(&uart_pdata);
imx31_add_mxc_w1();
/* I2C adapters and devices */
i2c_register_board_info(1, pcm037_i2c_devices,
ARRAY_SIZE(pcm037_i2c_devices));
imx31_add_imx_i2c1(&pcm037_i2c1_data);
imx31_add_imx_i2c2(&pcm037_i2c2_data);
imx31_add_mxc_nand(&pcm037_nand_board_info);
imx31_add_ipu_core();
imx31_add_mx3_sdc_fb(&mx3fb_pdata);
if (otg_mode_host) {
otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
ULPI_OTG_DRVVBUS_EXT);
if (otg_pdata.otg)
imx31_add_mxc_ehci_otg(&otg_pdata);
}
usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
ULPI_OTG_DRVVBUS_EXT);
if (usbh2_pdata.otg)
imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
if (!otg_mode_host)
imx31_add_fsl_usb2_udc(&otg_device_pdata);
}
static void __init pcm037_timer_init(void)
{
mx31_clocks_init(26000000);
}
static void __init pcm037_init_late(void)
{
int ret;
/* LAN9217 IRQ pin */
ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1), "lan9217-irq");
if (!ret) {
gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1));
smsc911x_resources[1].start =
gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1));
smsc911x_resources[1].end =
gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO3_1));
platform_device_register(&pcm037_eth);
} else {
pr_warn("could not get LAN irq gpio\n");
}
imx31_add_mxc_mmc(0, &sdhc_pdata);
pcm970_sja1000_resources[1].start =
gpio_to_irq(IOMUX_TO_GPIO(IOMUX_PIN(48, 105)));
pcm970_sja1000_resources[1].end =
gpio_to_irq(IOMUX_TO_GPIO(IOMUX_PIN(48, 105)));
platform_device_register(&pcm970_sja1000);
pcm037_eet_init_devices();
}
MACHINE_START(PCM037, "Phytec Phycore pcm037")
/* Maintainer: Pengutronix */
.atag_offset = 0x100,
.map_io = mx31_map_io,
.init_early = imx31_init_early,
.init_irq = mx31_init_irq,
.init_time = pcm037_timer_init,
.init_machine = pcm037_init,
.init_late = pcm037_init_late,
.restart = mxc_restart,
MACHINE_END
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