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linux_dsm_epyc7002/arch/arm/mach-exynos/mach-smdkv310.c
Sachin Kamat 873673d302 ARM: EXYNOS: Fix NULL pointer dereference bug in SMDKV310 
When DRM support for Samsung SoC and Samsung S3C framebuffer support
are selected, the kernel crashes as it does not get the required
platform data. Change the compile macro to CONFIG_DRM_EXYNOS_FIMD
to fix this.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-12-19 09:25:23 -08:00

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/* linux/arch/arm/mach-exynos4/mach-smdkv310.c
*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/serial_core.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/lcd.h>
#include <linux/mmc/host.h>
#include <linux/platform_device.h>
#include <linux/smsc911x.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/platform_data/i2c-s3c2410.h>
#include <linux/platform_data/s3c-hsotg.h>
#include <linux/platform_data/usb-ehci-s5p.h>
#include <linux/platform_data/usb-exynos.h>
#include <asm/mach/arch.h>
#include <asm/hardware/gic.h>
#include <asm/mach-types.h>
#include <video/platform_lcd.h>
#include <video/samsung_fimd.h>
#include <plat/regs-serial.h>
#include <plat/regs-srom.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/fb.h>
#include <plat/keypad.h>
#include <plat/sdhci.h>
#include <plat/gpio-cfg.h>
#include <plat/backlight.h>
#include <plat/mfc.h>
#include <plat/clock.h>
#include <plat/hdmi.h>
#include <mach/map.h>
#include <drm/exynos_drm.h>
#include "common.h"
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define SMDKV310_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
S3C2410_UCON_RXILEVEL | \
S3C2410_UCON_TXIRQMODE | \
S3C2410_UCON_RXIRQMODE | \
S3C2410_UCON_RXFIFO_TOI | \
S3C2443_UCON_RXERR_IRQEN)
#define SMDKV310_ULCON_DEFAULT S3C2410_LCON_CS8
#define SMDKV310_UFCON_DEFAULT (S3C2410_UFCON_FIFOMODE | \
S5PV210_UFCON_TXTRIG4 | \
S5PV210_UFCON_RXTRIG4)
static struct s3c2410_uartcfg smdkv310_uartcfgs[] __initdata = {
[0] = {
.hwport = 0,
.flags = 0,
.ucon = SMDKV310_UCON_DEFAULT,
.ulcon = SMDKV310_ULCON_DEFAULT,
.ufcon = SMDKV310_UFCON_DEFAULT,
},
[1] = {
.hwport = 1,
.flags = 0,
.ucon = SMDKV310_UCON_DEFAULT,
.ulcon = SMDKV310_ULCON_DEFAULT,
.ufcon = SMDKV310_UFCON_DEFAULT,
},
[2] = {
.hwport = 2,
.flags = 0,
.ucon = SMDKV310_UCON_DEFAULT,
.ulcon = SMDKV310_ULCON_DEFAULT,
.ufcon = SMDKV310_UFCON_DEFAULT,
},
[3] = {
.hwport = 3,
.flags = 0,
.ucon = SMDKV310_UCON_DEFAULT,
.ulcon = SMDKV310_ULCON_DEFAULT,
.ufcon = SMDKV310_UFCON_DEFAULT,
},
};
static struct s3c_sdhci_platdata smdkv310_hsmmc0_pdata __initdata = {
.cd_type = S3C_SDHCI_CD_INTERNAL,
#ifdef CONFIG_EXYNOS4_SDHCI_CH0_8BIT
.max_width = 8,
.host_caps = MMC_CAP_8_BIT_DATA,
#endif
};
static struct s3c_sdhci_platdata smdkv310_hsmmc1_pdata __initdata = {
.cd_type = S3C_SDHCI_CD_GPIO,
.ext_cd_gpio = EXYNOS4_GPK0(2),
.ext_cd_gpio_invert = 1,
};
static struct s3c_sdhci_platdata smdkv310_hsmmc2_pdata __initdata = {
.cd_type = S3C_SDHCI_CD_INTERNAL,
#ifdef CONFIG_EXYNOS4_SDHCI_CH2_8BIT
.max_width = 8,
.host_caps = MMC_CAP_8_BIT_DATA,
#endif
};
static struct s3c_sdhci_platdata smdkv310_hsmmc3_pdata __initdata = {
.cd_type = S3C_SDHCI_CD_GPIO,
.ext_cd_gpio = EXYNOS4_GPK2(2),
.ext_cd_gpio_invert = 1,
};
static void lcd_lte480wv_set_power(struct plat_lcd_data *pd,
unsigned int power)
{
if (power) {
#if !defined(CONFIG_BACKLIGHT_PWM)
gpio_request_one(EXYNOS4_GPD0(1), GPIOF_OUT_INIT_HIGH, "GPD0");
gpio_free(EXYNOS4_GPD0(1));
#endif
/* fire nRESET on power up */
gpio_request_one(EXYNOS4_GPX0(6), GPIOF_OUT_INIT_HIGH, "GPX0");
mdelay(100);
gpio_set_value(EXYNOS4_GPX0(6), 0);
mdelay(10);
gpio_set_value(EXYNOS4_GPX0(6), 1);
mdelay(10);
gpio_free(EXYNOS4_GPX0(6));
} else {
#if !defined(CONFIG_BACKLIGHT_PWM)
gpio_request_one(EXYNOS4_GPD0(1), GPIOF_OUT_INIT_LOW, "GPD0");
gpio_free(EXYNOS4_GPD0(1));
#endif
}
}
static struct plat_lcd_data smdkv310_lcd_lte480wv_data = {
.set_power = lcd_lte480wv_set_power,
};
static struct platform_device smdkv310_lcd_lte480wv = {
.name = "platform-lcd",
.dev.parent = &s5p_device_fimd0.dev,
.dev.platform_data = &smdkv310_lcd_lte480wv_data,
};
#ifdef CONFIG_DRM_EXYNOS_FIMD
static struct exynos_drm_fimd_pdata drm_fimd_pdata = {
.panel = {
.timing = {
.left_margin = 13,
.right_margin = 8,
.upper_margin = 7,
.lower_margin = 5,
.hsync_len = 3,
.vsync_len = 1,
.xres = 800,
.yres = 480,
},
},
.vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
.vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
.default_win = 0,
.bpp = 32,
};
#else
static struct s3c_fb_pd_win smdkv310_fb_win0 = {
.max_bpp = 32,
.default_bpp = 24,
.xres = 800,
.yres = 480,
};
static struct fb_videomode smdkv310_lcd_timing = {
.left_margin = 13,
.right_margin = 8,
.upper_margin = 7,
.lower_margin = 5,
.hsync_len = 3,
.vsync_len = 1,
.xres = 800,
.yres = 480,
};
static struct s3c_fb_platdata smdkv310_lcd0_pdata __initdata = {
.win[0] = &smdkv310_fb_win0,
.vtiming = &smdkv310_lcd_timing,
.vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
.vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
.setup_gpio = exynos4_fimd0_gpio_setup_24bpp,
};
#endif
static struct resource smdkv310_smsc911x_resources[] = {
[0] = DEFINE_RES_MEM(EXYNOS4_PA_SROM_BANK(1), SZ_64K),
[1] = DEFINE_RES_NAMED(IRQ_EINT(5), 1, NULL, IORESOURCE_IRQ \
| IRQF_TRIGGER_LOW),
};
static struct smsc911x_platform_config smsc9215_config = {
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
.flags = SMSC911X_USE_16BIT | SMSC911X_FORCE_INTERNAL_PHY,
.phy_interface = PHY_INTERFACE_MODE_MII,
.mac = {0x00, 0x80, 0x00, 0x23, 0x45, 0x67},
};
static struct platform_device smdkv310_smsc911x = {
.name = "smsc911x",
.id = -1,
.num_resources = ARRAY_SIZE(smdkv310_smsc911x_resources),
.resource = smdkv310_smsc911x_resources,
.dev = {
.platform_data = &smsc9215_config,
},
};
static uint32_t smdkv310_keymap[] __initdata = {
/* KEY(row, col, keycode) */
KEY(0, 3, KEY_1), KEY(0, 4, KEY_2), KEY(0, 5, KEY_3),
KEY(0, 6, KEY_4), KEY(0, 7, KEY_5),
KEY(1, 3, KEY_A), KEY(1, 4, KEY_B), KEY(1, 5, KEY_C),
KEY(1, 6, KEY_D), KEY(1, 7, KEY_E)
};
static struct matrix_keymap_data smdkv310_keymap_data __initdata = {
.keymap = smdkv310_keymap,
.keymap_size = ARRAY_SIZE(smdkv310_keymap),
};
static struct samsung_keypad_platdata smdkv310_keypad_data __initdata = {
.keymap_data = &smdkv310_keymap_data,
.rows = 2,
.cols = 8,
};
static struct i2c_board_info i2c_devs1[] __initdata = {
{I2C_BOARD_INFO("wm8994", 0x1a),},
};
/* USB EHCI */
static struct s5p_ehci_platdata smdkv310_ehci_pdata;
static void __init smdkv310_ehci_init(void)
{
struct s5p_ehci_platdata *pdata = &smdkv310_ehci_pdata;
s5p_ehci_set_platdata(pdata);
}
/* USB OHCI */
static struct exynos4_ohci_platdata smdkv310_ohci_pdata;
static void __init smdkv310_ohci_init(void)
{
struct exynos4_ohci_platdata *pdata = &smdkv310_ohci_pdata;
exynos4_ohci_set_platdata(pdata);
}
/* USB OTG */
static struct s3c_hsotg_plat smdkv310_hsotg_pdata;
/* Audio device */
static struct platform_device smdkv310_device_audio = {
.name = "smdk-audio",
.id = -1,
};
static struct platform_device *smdkv310_devices[] __initdata = {
&s3c_device_hsmmc0,
&s3c_device_hsmmc1,
&s3c_device_hsmmc2,
&s3c_device_hsmmc3,
&s3c_device_i2c1,
&s5p_device_i2c_hdmiphy,
&s3c_device_rtc,
&s3c_device_usb_hsotg,
&s3c_device_wdt,
&s5p_device_ehci,
&s5p_device_fimc0,
&s5p_device_fimc1,
&s5p_device_fimc2,
&s5p_device_fimc3,
&s5p_device_fimc_md,
&s5p_device_g2d,
&s5p_device_jpeg,
&exynos4_device_ac97,
&exynos4_device_i2s0,
&exynos4_device_ohci,
&samsung_device_keypad,
&s5p_device_mfc,
&s5p_device_mfc_l,
&s5p_device_mfc_r,
&exynos4_device_spdif,
&samsung_asoc_idma,
&s5p_device_fimd0,
&smdkv310_device_audio,
&smdkv310_lcd_lte480wv,
&smdkv310_smsc911x,
&exynos4_device_ahci,
&s5p_device_hdmi,
&s5p_device_mixer,
};
static void __init smdkv310_smsc911x_init(void)
{
u32 cs1;
/* configure nCS1 width to 16 bits */
cs1 = __raw_readl(S5P_SROM_BW) &
~(S5P_SROM_BW__CS_MASK << S5P_SROM_BW__NCS1__SHIFT);
cs1 |= ((1 << S5P_SROM_BW__DATAWIDTH__SHIFT) |
(1 << S5P_SROM_BW__WAITENABLE__SHIFT) |
(1 << S5P_SROM_BW__BYTEENABLE__SHIFT)) <<
S5P_SROM_BW__NCS1__SHIFT;
__raw_writel(cs1, S5P_SROM_BW);
/* set timing for nCS1 suitable for ethernet chip */
__raw_writel((0x1 << S5P_SROM_BCX__PMC__SHIFT) |
(0x9 << S5P_SROM_BCX__TACP__SHIFT) |
(0xc << S5P_SROM_BCX__TCAH__SHIFT) |
(0x1 << S5P_SROM_BCX__TCOH__SHIFT) |
(0x6 << S5P_SROM_BCX__TACC__SHIFT) |
(0x1 << S5P_SROM_BCX__TCOS__SHIFT) |
(0x1 << S5P_SROM_BCX__TACS__SHIFT), S5P_SROM_BC1);
}
/* LCD Backlight data */
static struct samsung_bl_gpio_info smdkv310_bl_gpio_info = {
.no = EXYNOS4_GPD0(1),
.func = S3C_GPIO_SFN(2),
};
static struct platform_pwm_backlight_data smdkv310_bl_data = {
.pwm_id = 1,
.pwm_period_ns = 1000,
};
/* I2C module and id for HDMIPHY */
static struct i2c_board_info hdmiphy_info = {
I2C_BOARD_INFO("hdmiphy-exynos4210", 0x38),
};
static struct pwm_lookup smdkv310_pwm_lookup[] = {
PWM_LOOKUP("s3c24xx-pwm.1", 0, "pwm-backlight.0", NULL),
};
static void s5p_tv_setup(void)
{
/* direct HPD to HDMI chip */
WARN_ON(gpio_request_one(EXYNOS4_GPX3(7), GPIOF_IN, "hpd-plug"));
s3c_gpio_cfgpin(EXYNOS4_GPX3(7), S3C_GPIO_SFN(0x3));
s3c_gpio_setpull(EXYNOS4_GPX3(7), S3C_GPIO_PULL_NONE);
}
static void __init smdkv310_map_io(void)
{
exynos_init_io(NULL, 0);
s3c24xx_init_clocks(clk_xusbxti.rate);
s3c24xx_init_uarts(smdkv310_uartcfgs, ARRAY_SIZE(smdkv310_uartcfgs));
}
static void __init smdkv310_reserve(void)
{
s5p_mfc_reserve_mem(0x43000000, 8 << 20, 0x51000000, 8 << 20);
}
static void __init smdkv310_machine_init(void)
{
s3c_i2c1_set_platdata(NULL);
i2c_register_board_info(1, i2c_devs1, ARRAY_SIZE(i2c_devs1));
smdkv310_smsc911x_init();
s3c_sdhci0_set_platdata(&smdkv310_hsmmc0_pdata);
s3c_sdhci1_set_platdata(&smdkv310_hsmmc1_pdata);
s3c_sdhci2_set_platdata(&smdkv310_hsmmc2_pdata);
s3c_sdhci3_set_platdata(&smdkv310_hsmmc3_pdata);
s5p_tv_setup();
s5p_i2c_hdmiphy_set_platdata(NULL);
s5p_hdmi_set_platdata(&hdmiphy_info, NULL, 0);
samsung_keypad_set_platdata(&smdkv310_keypad_data);
samsung_bl_set(&smdkv310_bl_gpio_info, &smdkv310_bl_data);
pwm_add_table(smdkv310_pwm_lookup, ARRAY_SIZE(smdkv310_pwm_lookup));
#ifdef CONFIG_DRM_EXYNOS_FIMD
s5p_device_fimd0.dev.platform_data = &drm_fimd_pdata;
exynos4_fimd0_gpio_setup_24bpp();
#else
s5p_fimd0_set_platdata(&smdkv310_lcd0_pdata);
#endif
smdkv310_ehci_init();
smdkv310_ohci_init();
s3c_hsotg_set_platdata(&smdkv310_hsotg_pdata);
platform_add_devices(smdkv310_devices, ARRAY_SIZE(smdkv310_devices));
}
MACHINE_START(SMDKV310, "SMDKV310")
/* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
/* Maintainer: Changhwan Youn <chaos.youn@samsung.com> */
.atag_offset = 0x100,
.smp = smp_ops(exynos_smp_ops),
.init_irq = exynos4_init_irq,
.map_io = smdkv310_map_io,
.handle_irq = gic_handle_irq,
.init_machine = smdkv310_machine_init,
.timer = &exynos4_timer,
.reserve = &smdkv310_reserve,
.restart = exynos4_restart,
MACHINE_END
MACHINE_START(SMDKC210, "SMDKC210")
/* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
.atag_offset = 0x100,
.smp = smp_ops(exynos_smp_ops),
.init_irq = exynos4_init_irq,
.map_io = smdkv310_map_io,
.handle_irq = gic_handle_irq,
.init_machine = smdkv310_machine_init,
.init_late = exynos_init_late,
.timer = &exynos4_timer,
.reserve = &smdkv310_reserve,
.restart = exynos4_restart,
MACHINE_END
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