最近折腾了很久，总算搞定了。
发个补丁，希望大家不要再折腾了，而且也不要看网上的所谓垃圾移植指南了，都是 bullshit.
From 144759a9929f0858398b834a5cbfdb79ce56f077 Mon Sep 17 00:00:00 2001
From: microcai <microcai@fedoraproject.org>
Date: Sat, 30 Apr 2011 14:28:11 +0800
Subject: [PATCH 2/4] =TQ 2440 补丁
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
---
arch/arm/mach-s3c2440/Kconfig | 46 +++
arch/arm/mach-s3c2440/Makefile | 1 +
arch/arm/mach-s3c2440/mach-tq2440.c | 539 +++++++++++++++++++++++++++++++++++
3 files changed, 586 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-s3c2440/mach-tq2440.c
diff --git a/arch/arm/mach-s3c2440/Kconfig b/arch/arm/mach-s3c2440/Kconfig
index 50825a3..9afdfe5 100644
--- a/arch/arm/mach-s3c2440/Kconfig
+++ b/arch/arm/mach-s3c2440/Kconfig
@@ -203,4 +203,50 @@ config MACH_RX1950
help
Say Y here if you're using HP iPAQ rx1950
+config MACH_TQ2440
+ bool "TQ 2440"
+ select MACH_SMDK
+ select CPU_S3C2440
+ select S3C_DEV_NAND
+ select MTD
+ select MTD_NAND
+ select MTD_NAND_S3C2410
+ select S3C_DEV_USB_HOST
+ select RTC_DRV_S3C if RTC_CLASS
+ select S3C2410_WATCHDOG if WATCHDOG
+ select SND_SOC_SAMSUNG_S3C24XX_UDA134X if SOUND
+ select USB_GADGET_S3C2410
+ select FB_S3C2410 if FB
+ select SERIAL_SAMSUNG
+ select SERIAL_S3C2440
+ select SERIAL_SAMSUNG_CONSOLE
+ select SERIO
+ select AEABI
+ select BINFMT_ELF
+ select CPU_FREQ_S3C24XX if CPU_FREQ
+ select DM9000 if NETDEVICES
+ select DEPRECATED_PARAM_STRUCT
+
+ help
+ Say Y here if you are using the TQ 2440 Machine
+ development system
+
+choice
+ prompt "LCD size"
+ default FB_S3C24X0_LCD480272
+ depends on FB_S3C2410 && MACH_TQ2440
+
+config FB_S3C24X0_LCD480272
+ bool "4.3in LCD"
+ help
+ Support 4.3in LCD
+
+
+config FB_S3C24X0_TFT640480
+ bool "640x480 LCD"
+
+
+endchoice
+
+
endmenu
diff --git a/arch/arm/mach-s3c2440/Makefile b/arch/arm/mach-s3c2440/Makefile
index d5440fa..c001bdd 100644
--- a/arch/arm/mach-s3c2440/Makefile
+++ b/arch/arm/mach-s3c2440/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_S3C2440_PLL_16934400) += s3c2440-pll-16934400.o
# Machine support
+obj-$(CONFIG_MACH_TQ2440) += mach-tq2440.o
obj-$(CONFIG_MACH_ANUBIS) += mach-anubis.o
obj-$(CONFIG_MACH_OSIRIS) += mach-osiris.o
obj-$(CONFIG_MACH_RX3715) += mach-rx3715.o
diff --git a/arch/arm/mach-s3c2440/mach-tq2440.c b/arch/arm/mach-s3c2440/mach-tq2440.c
new file mode 100644
index 0000000..3d1bef7
--- /dev/null
+++ b/arch/arm/mach-s3c2440/mach-tq2440.c
@@ -0,0 +1,539 @@
+/* linux/arch/arm/mach-s3c2440/mach-smdk2440.c
+ *
+ * Copyright (c) 2004-2005 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * http://www.fluff.org/ben/smdk2440/
+ *
+ * Thanks to Dimity Andric and TomTom for the loan of an SMDK2440.
+ *
+ * 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/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+#include <linux/i2c/at24.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/input.h>
+#include <linux/dm9000.h>
+#include <linux/gpio_keys.h>
+#include <linux/mmc/host.h>
+#include <sound/s3c24xx_uda134x.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include <plat/regs-serial.h>
+#include <plat/regs-adc.h>
+#include <mach/regs-mem.h>
+#include <plat/iic.h>
+#include <plat/nand.h>
+#include <plat/s3c2410.h>
+#include <plat/s3c244x.h>
+#include <plat/clock.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+#include <plat/udc.h>
+#include <plat/pm.h>
+#include <plat/ts.h>
+#include <plat/mci.h>
+
+#include <mach/fb.h>
+#include <mach/gpio-fns.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-lcd.h>
+#include <mach/leds-gpio.h>
+#include <mach/idle.h>
+
+
+/*NAND*/
+
+static struct mtd_partition smdk_default_nand_part[] = {
+
+ [0] = {
+
+ .name = "uboot",
+
+ .offset = 0x00000000,
+ .size = SZ_2M,
+
+ },
+ [1] = {
+
+ .name = "kernel",
+ .offset = SZ_2M,
+ .size = SZ_2M + SZ_1M,
+ },
+
+ [2] = {
+ .name = "yaffs2",
+ .offset = SZ_4M+SZ_1M,
+ .size = MTDPART_SIZ_FULL,
+ }
+};
+
+static struct s3c2410_nand_set smdk_nand_sets[] = {
+ [0] = {
+ .disable_ecc = 1, // 在这里设置才是正确的
+ .name = "NAND",
+ .nr_chips = 1,
+ .nr_partitions = ARRAY_SIZE(smdk_default_nand_part),
+ .partitions = smdk_default_nand_part,
+ },
+};
+
+
+static struct s3c2410_platform_nand smdk_nand_info = {
+ .tacls = 20,
+ .twrph0 = 60,
+ .twrph1 = 20,
+ .nr_sets = ARRAY_SIZE(smdk_nand_sets),
+ .sets = smdk_nand_sets,
+};
+
+
+/*IO*/
+static struct map_desc tq2440_iodesc[] = {
+ /* ISA IO Space map (memory space selected by A24) */
+
+ {
+ .virtual = (u32)S3C24XX_VA_ISA_WORD,
+ .pfn = __phys_to_pfn(S3C2410_CS2),
+ .length = 0x10000,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (u32)S3C24XX_VA_ISA_WORD + 0x10000,
+ .pfn = __phys_to_pfn(S3C2410_CS2 + (1<<24)),
+ .length = SZ_4M,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (u32)S3C24XX_VA_ISA_BYTE,
+ .pfn = __phys_to_pfn(S3C2410_CS2),
+ .length = 0x10000,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (u32)S3C24XX_VA_ISA_BYTE + 0x10000,
+ .pfn = __phys_to_pfn(S3C2410_CS2 + (1<<24)),
+ .length = SZ_4M,
+ .type = MT_DEVICE,
+ }
+};
+
+#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
+#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
+#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
+
+static struct s3c2410_uartcfg tq2440_uartcfgs[] = {
+ [0] = {
+ .hwport = 0,
+ .flags = 0,
+ .ucon = 0x3c5,
+ .ulcon = 0x03,
+ .ufcon = 0x51,
+ },
+};
+
+/* LCD driver info */
+
+static struct s3c2410fb_display tq2440_lcd_cfg = {
+
+ .lcdcon5 = S3C2410_LCDCON5_FRM565 |
+ S3C2410_LCDCON5_INVVLINE |
+ S3C2410_LCDCON5_INVVFRAME |
+ S3C2410_LCDCON5_PWREN |
+ S3C2410_LCDCON5_HWSWP,
+
+ .type = S3C2410_LCDCON1_TFT,
+
+#if defined(CONFIG_FB_S3C24X0_LCD480272)
+ .width = 480,
+ .height = 272,
+
+ .pixclock = 40000, /* HCLK 100 MHz, divisor 1 */
+ .xres = 480,
+ .yres = 272,
+ .bpp = 16,
+ .left_margin = 15, /* for HFPD*/
+ .right_margin = 16, /* for HBPD*/
+ .hsync_len = 30, /* for HSPW*/
+ .upper_margin = 4, /* for VFPD*/
+ .lower_margin = 2, /* for VBPD*/
+ .vsync_len = 8, /* for VSPW*/
+
+#elif defined(CONFIG_FB_S3C24X0_TFT640480)
+ .width = 640,
+ .height = 480,
+
+ .pixclock = 40000, /* HCLK 100 MHz, divisor 1 */
+ .xres = 640,
+ .yres = 480,
+ .bpp = 16,
+ .left_margin = 40, /* for HFPD*/
+ .right_margin = 67, /* for HBPD*/
+ .hsync_len = 31, /* for HSPW*/
+ .upper_margin = 5, /* for VFPD*/
+ .lower_margin = 25, /* for VBPD*/
+ .vsync_len = 1, /* for VSPW*/
+
+#else
+ .width = 240,
+ .height = 320,
+
+ .pixclock = 166667, /* HCLK 60 MHz, divisor 10 */
+ .xres = 240,
+ .yres = 320,
+ .bpp = 16,
+ .left_margin = 20,
+ .right_margin = 8,
+ .hsync_len = 4,
+ .upper_margin = 8,
+ .lower_margin = 7,
+ .vsync_len = 4,
+#endif
+
+};
+
+static struct s3c2410fb_mach_info tq2440_fb_info = {
+ .displays = &tq2440_lcd_cfg,
+ .num_displays = 1,
+ .default_display = 0,
+};
+
+
+static struct resource s3c_dm9000_resource[] = {
+ [0] = {
+ .start = S3C2410_CS4,
+ .end = S3C2410_CS4+3,
+ .flags = IORESOURCE_MEM,
+ },
+
+ [1] = {
+ .start = S3C2410_CS4+4,
+ .end = S3C2410_CS4+4+3,
+ .flags = IORESOURCE_MEM,
+ },
+
+ [2] = {
+ .start = IRQ_EINT7,
+ .end =IRQ_EINT7,
+ .flags =IORESOURCE_IRQ|IORESOURCE_IRQ_HIGHEDGE|IORESOURCE_IRQ_SHAREABLE,
+ }
+};
+
+static struct dm9000_plat_data dm9k_plat_data = {
+ .flags = DM9000_PLATF_16BITONLY|DM9000_PLATF_NO_EEPROM,
+ .dev_addr = "",
+ };
+
+static struct platform_device s3c_device_dm9k = {
+ .name = "dm9000",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(s3c_dm9000_resource),
+ .resource = s3c_dm9000_resource,
+ .dev = {
+ .platform_data = &dm9k_plat_data,
+ }
+};
+
+
+/*设置udc回调函数udc_pullup()用于使能/禁止UDC上拉电阻*/
+/*udc*/
+static void udc_pullup(enum s3c2410_udc_cmd_e cmd)
+{
+ switch(cmd)
+ {
+ case S3C2410_UDC_P_ENABLE:
+ s3c2410_gpio_setpin(S3C2410_GPG(12),1);
+ break;
+ case S3C2410_UDC_P_DISABLE:
+ s3c2410_gpio_setpin(S3C2410_GPG(12),0);
+ break;
+ case S3C2410_UDC_P_RESET:
+ break;
+ default:
+ break;
+ }
+}
+static struct s3c2410_udc_mach_info udc_machine = {
+ .udc_command = udc_pullup,
+};
+
+
+/*KEY*/
+static struct gpio_keys_button mini2440_buttons[] = {
+ {
+ .gpio = S3C2410_GPF(1), /* K1 */
+ .code = KEY_UP,
+ .desc = "UP",
+ .active_low = 1,
+ },
+ {
+ .gpio = S3C2410_GPF(4), /* K2 */
+ .code = KEY_DOWN,
+ .desc = "DOWN",
+ .active_low = 1,
+ },
+ {
+ .gpio = S3C2410_GPF(2), /* K3 */
+ .code = KEY_LEFT,
+ .desc = "LEFT",
+ .active_low = 1,
+ },
+ {
+ .gpio = S3C2410_GPF(0), /* K4 */
+ .code = KEY_RIGHT,
+ .desc = "RIGHT",
+ .active_low = 1,
+ },
+
+};
+
+static struct gpio_keys_platform_data mini2440_button_data = {
+ .buttons = mini2440_buttons,
+ .nbuttons = ARRAY_SIZE(mini2440_buttons),
+};
+
+static struct platform_device mini2440_button_device = {
+ .name = "gpio-keys",
+ .id = -1,
+ .dev = {
+ .platform_data = &mini2440_button_data,
+ }
+};
+
+/* LED devices */
+
+static struct s3c24xx_led_platdata smdk_pdata_led4 = {
+ .gpio = S3C2410_GPB(5),
+ .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
+ .name = "led4",
+ .def_trigger = "timer",
+};
+
+static struct s3c24xx_led_platdata smdk_pdata_led5 = {
+ .gpio = S3C2410_GPB(6),
+ .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
+ .name = "led5",
+ .def_trigger = "nand-disk",
+};
+
+static struct s3c24xx_led_platdata smdk_pdata_led6 = {
+ .gpio = S3C2410_GPB(7),
+ .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
+ .name = "led6",
+};
+
+static struct s3c24xx_led_platdata smdk_pdata_led7 = {
+ .gpio = S3C2410_GPB(8),
+ .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
+ .name = "led7",
+};
+
+static struct platform_device smdk_led4 = {
+ .name = "s3c24xx_led",
+ .id = 0,
+ .dev = {
+ .platform_data = &smdk_pdata_led4,
+ },
+};
+
+static struct platform_device smdk_led5 = {
+ .name = "s3c24xx_led",
+ .id = 1,
+ .dev = {
+ .platform_data = &smdk_pdata_led5,
+ },
+};
+
+static struct platform_device smdk_led6 = {
+ .name = "s3c24xx_led",
+ .id = 2,
+ .dev = {
+ .platform_data = &smdk_pdata_led6,
+ },
+};
+
+static struct platform_device smdk_led7 = {
+ .name = "s3c24xx_led",
+ .id = 3,
+ .dev = {
+ .platform_data = &smdk_pdata_led7,
+ },
+};
+
+static struct s3c24xx_uda134x_platform_data tq2440_audio_pins = {
+ .l3_clk = S3C2410_GPB(4),
+ .l3_data = S3C2410_GPB(3),
+ .l3_mode = S3C2410_GPB(2),
+ .model = UDA134X_UDA1341,
+};
+
+static struct platform_device tq2440_audio = {
+ .name = "s3c24xx_uda134x",
+ .id = 0,
+ .dev = {
+ .platform_data = &tq2440_audio_pins,
+ },
+};
+
+static struct platform_device uda1340_codec = {
+ .name = "uda134x-codec",
+};
+
+/* Touchscreen */
+static struct s3c2410_ts_mach_info tq2400_ts_info = {
+ .delay = 10000,
+ .presc = 49,
+ .oversampling_shift = 2,
+};
+
+static struct resource s3c_adc_resource[] = {
+ [0] = {
+ .start = S3C2410_PA_ADC,
+ .end = S3C2410_PA_ADC + 0x20 ,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_TC,
+ .end = IRQ_TC,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .start = IRQ_ADC,
+ .end = IRQ_ADC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+
+/*
+ * I2C devices
+ */
+static struct at24_platform_data at24c08 = {
+ .byte_len = SZ_8K / 8,
+ .page_size = 16,
+};
+
+static struct i2c_board_info mini2440_i2c_devs[] = {
+ {
+ I2C_BOARD_INFO("24c08", 0x50),
+ .platform_data = &at24c08,
+ },
+};
+
+
+static struct platform_device *tq2440_devices[] = {
+ &s3c_device_adc,
+ &s3c_device_ts,
+ &s3c_device_ohci, // s3c24xx_ohci
+ &s3c_device_wdt, // 看门狗狗
+ &s3c_device_lcd,
+ &s3c_device_i2c0,
+ &s3c_device_iis,
+ &s3c_device_nand, // MTD NAND 分区表
+ &s3c_device_dm9k, // 特别的DM9000网卡芯片
+ &s3c_device_rtc,
+ &mini2440_button_device,
+ &s3c_device_sdi, // SD 卡读卡器
+ &s3c_device_usbgadget,
+ &uda1340_codec,
+ &tq2440_audio, // ALSA 声卡
+ &samsung_asoc_dma,
+ &smdk_led4,
+ &smdk_led5,
+ &smdk_led6,
+ &smdk_led7,
+};
+
+/* MMC/SD */
+
+static struct s3c24xx_mci_pdata mini2440_mmc_cfg = {
+ .gpio_detect = S3C2410_GPG(8),
+ .gpio_wprotect = S3C2410_GPH(8),
+ .set_power = NULL,
+ .ocr_avail = MMC_VDD_32_33|MMC_VDD_33_34,
+};
+
+static void __init tq2440_map_io(void)
+{
+ s3c24xx_init_io(tq2440_iodesc, ARRAY_SIZE(tq2440_iodesc));
+ s3c24xx_init_clocks(12000000);
+ s3c24xx_init_uarts(tq2440_uartcfgs, ARRAY_SIZE(tq2440_uartcfgs));
+}
+
+static void __init tq2440_machine_init(void)
+{
+ int i;
+
+ s3c24xx_fb_set_platdata(&tq2440_fb_info);
+ s3c_i2c0_set_platdata(NULL);
+
+ s3c2410_gpio_cfgpin(S3C2410_GPG(8),S3C2410_GPG8_EINT16);
+
+ s3c_nand_set_platdata(&smdk_nand_info);
+ s3c24xx_mci_set_platdata(&mini2440_mmc_cfg);
+
+// s3c_device_adc.num_resources = ARRAY_SIZE(s3c_adc_resource);
+// s3c_device_adc.resource = s3c_adc_resource;
+
+ s3c_device_ts.dev.platform_data = &tq2400_ts_info;
+
+
+#ifdef CONFIG_DM9000
+ *((volatile unsigned int *)S3C2410_BANKCON4) = 0x1f7c; //config time seq
+#endif
+
+ /* mark the key as input, without pullups (there is one on the board) */
+ for ( i = 0; i < ARRAY_SIZE(mini2440_buttons); i++) {
+ s3c_gpio_setpull(mini2440_buttons[i].gpio, S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(mini2440_buttons[i].gpio, S3C2410_GPIO_INPUT);
+ }
+
+ s3c24xx_mci_set_platdata(&mini2440_mmc_cfg);
+
+ i2c_register_board_info(0, mini2440_i2c_devs,
+ ARRAY_SIZE(mini2440_i2c_devs));
+
+ platform_add_devices(tq2440_devices, ARRAY_SIZE(tq2440_devices));
+
+ s3c2410_gpio_setpin(S3C2410_GPG(12),0);
+ s3c2410_gpio_cfgpin(S3C2410_GPG(12),S3C2410_GPIO_OUTPUT);
+ s3c24xx_udc_set_platdata(&udc_machine);
+}
+
+#define MACH_TYPE_168 168
+/*For some reason , my machine is ID 168*/
+MACHINE_START(168, "TQ2440-168")
+ .boot_params = S3C2410_SDRAM_PA + 0x100,
+ .init_irq = s3c24xx_init_irq,
+ .map_io = tq2440_map_io,
+ .init_machine = tq2440_machine_init,
+ .timer = &s3c24xx_timer,
+MACHINE_END
+
+MACHINE_START(TQ2440, "TQ2440")
+ .boot_params = S3C2410_SDRAM_PA + 0x100,
+ .init_irq = s3c24xx_init_irq,
+ .map_io = tq2440_map_io,
+ .init_machine = tq2440_machine_init,
+ .timer = &s3c24xx_timer,
+MACHINE_END
--
1.7.5.rc3
From 119021354fa6001311db9f1df5d3ea8061a35f9b Mon Sep 17 00:00:00 2001
From: microcai <microcai@fedoraproject.org>
Date: Thu, 5 May 2011 14:40:44 +0800
Subject: [PATCH 3/4] add report for ABS_PRESSURE, this fix tslib problem that
not been able to detect pen-down and pen-up events.
---
drivers/input/touchscreen/s3c2410_ts.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c
index 8feb7f3..ecab5d4 100644
--- a/drivers/input/touchscreen/s3c2410_ts.c
+++ b/drivers/input/touchscreen/s3c2410_ts.c
@@ -126,6 +126,7 @@ static void touch_timer_fire(unsigned long data)
input_report_abs(ts.input, ABS_Y, ts.yp);
input_report_key(ts.input, BTN_TOUCH, 1);
+ input_report_abs(ts.input, ABS_PRESSURE, 1);
input_sync(ts.input);
ts.xp = 0;
@@ -140,6 +141,7 @@ static void touch_timer_fire(unsigned long data)
ts.count = 0;
input_report_key(ts.input, BTN_TOUCH, 0);
+ input_report_abs(ts.input, ABS_PRESSURE, 0);
input_sync(ts.input);
writel(WAIT4INT | INT_DOWN, ts.io + S3C2410_ADCTSC);
@@ -318,6 +320,7 @@ static int __devinit s3c2410ts_probe(struct platform_device *pdev)
ts.input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
input_set_abs_params(ts.input, ABS_X, 0, 0x3FF, 0, 0);
input_set_abs_params(ts.input, ABS_Y, 0, 0x3FF, 0, 0);
+ input_set_abs_params(ts.input, ABS_PRESSURE, 0, 1, 0, 0);
ts.input->name = "S3C24XX TouchScreen";
ts.input->id.bustype = BUS_HOST;
--
1.7.5.rc3
From 4684013358b6edf0e8a790ef32de13a236cf7987 Mon Sep 17 00:00:00 2001
From: microcai <microcai@fedoraproject.org>
Date: Thu, 5 May 2011 16:19:53 +0800
Subject: [PATCH 4/4] fix some time later then driver not response
---
drivers/input/touchscreen/s3c2410_ts.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c
index ecab5d4..db868d2 100644
--- a/drivers/input/touchscreen/s3c2410_ts.c
+++ b/drivers/input/touchscreen/s3c2410_ts.c
@@ -227,6 +227,7 @@ static void s3c24xx_ts_select(struct s3c_adc_client *client, unsigned select)
if (select) {
writel(S3C2410_ADCTSC_PULL_UP_DISABLE | AUTOPST,
ts.io + S3C2410_ADCTSC);
+ writel(readl(ts.io+S3C2410_ADCCON) | S3C2410_ADCCON_ENABLE_START, ts.io+S3C2410_ADCCON);
} else {
mod_timer(&touch_timer, jiffies+1);
writel(WAIT4INT | INT_UP, ts.io + S3C2410_ADCTSC);
--
1.7.5.rc3