ARM: S3C6410: airgoo hmt board support
authorPeter Korsgaard <jacmet@sunsite.dk>
Wed, 1 Jul 2009 15:47:09 +0000 (17:47 +0200)
committerBen Dooks <ben-linux@fluff.org>
Thu, 30 Jul 2009 23:08:46 +0000 (00:08 +0100)
Add support for the Airgoo HMT (home media terminal) device.
The HMT is a tablet device with a s3c6410, a 7" LCD and a number
of peripheral connections.

For more details of the hardware specs, see:
http://article.gmane.org/gmane.linux.debian.devel.embedded/4307

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
[ben-linux@fluff.org: subject rewrite]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
arch/arm/mach-s3c6410/Kconfig
arch/arm/mach-s3c6410/Makefile
arch/arm/mach-s3c6410/mach-hmt.c [new file with mode: 0644]

index e63aac7f4e5a54c5516eadd457a94531758dbfb4..f9d0f09f9761fc6fc57b71c788de83954d323b6f 100644 (file)
@@ -97,3 +97,13 @@ config MACH_NCP
        select S3C64XX_SETUP_I2C1
        help
           Machine support for the Samsung NCP
+
+config MACH_HMT
+       bool "Airgoo HMT"
+       select CPU_S3C6410
+       select S3C_DEV_FB
+       select S3C_DEV_USB_HOST
+       select S3C64XX_SETUP_FB_24BPP
+       select HAVE_PWM
+       help
+         Machine support for the Airgoo HMT
index 6f9deac8861247ec38ffd9c5944f264a03505e9f..3e48c3dbf9734bd3fd66e4ab7f596efe36a2c90a 100644 (file)
@@ -23,5 +23,4 @@ obj-$(CONFIG_S3C6410_SETUP_SDHCI)     += setup-sdhci.o
 obj-$(CONFIG_MACH_ANW6410)     += mach-anw6410.o
 obj-$(CONFIG_MACH_SMDK6410)    += mach-smdk6410.o
 obj-$(CONFIG_MACH_NCP)         += mach-ncp.o
-
-
+obj-$(CONFIG_MACH_HMT)         += mach-hmt.o
diff --git a/arch/arm/mach-s3c6410/mach-hmt.c b/arch/arm/mach-s3c6410/mach-hmt.c
new file mode 100644 (file)
index 0000000..c574105
--- /dev/null
@@ -0,0 +1,276 @@
+/* mach-hmt.c - Platform code for Airgoo HMT
+ *
+ * Copyright 2009 Peter Korsgaard <jacmet@sunsite.dk>
+ *
+ * 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/init.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/i2c.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/leds.h>
+#include <linux/pwm_backlight.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-fb.h>
+#include <mach/map.h>
+
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include <plat/regs-serial.h>
+#include <plat/iic.h>
+#include <plat/fb.h>
+#include <plat/nand.h>
+
+#include <plat/s3c6410.h>
+#include <plat/clock.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+
+#define UCON S3C2410_UCON_DEFAULT
+#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
+#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
+
+static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
+       [0] = {
+               .hwport      = 0,
+               .flags       = 0,
+               .ucon        = UCON,
+               .ulcon       = ULCON,
+               .ufcon       = UFCON,
+       },
+       [1] = {
+               .hwport      = 1,
+               .flags       = 0,
+               .ucon        = UCON,
+               .ulcon       = ULCON,
+               .ufcon       = UFCON,
+       },
+       [2] = {
+               .hwport      = 2,
+               .flags       = 0,
+               .ucon        = UCON,
+               .ulcon       = ULCON,
+               .ufcon       = UFCON,
+       },
+};
+
+static int hmt_bl_init(struct device *dev)
+{
+       int ret;
+
+       ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
+       if (!ret)
+               ret = gpio_direction_output(S3C64XX_GPB(4), 0);
+
+       return ret;
+}
+
+static int hmt_bl_notify(int brightness)
+{
+       /*
+        * translate from CIELUV/CIELAB L*->brightness, E.G. from
+        * perceived luminance to light output. Assumes range 0..25600
+        */
+       if (brightness < 0x800) {
+               /* Y = Yn * L / 903.3 */
+               brightness = (100*256 * brightness + 231245/2) / 231245;
+       } else {
+               /* Y = Yn * ((L + 16) / 116 )^3 */
+               int t = (brightness*4 + 16*1024 + 58)/116;
+               brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000);
+       }
+
+       gpio_set_value(S3C64XX_GPB(4), brightness);
+
+       return brightness;
+}
+
+static void hmt_bl_exit(struct device *dev)
+{
+       gpio_free(S3C64XX_GPB(4));
+}
+
+static struct platform_pwm_backlight_data hmt_backlight_data = {
+       .pwm_id         = 1,
+       .max_brightness = 100 * 256,
+       .dft_brightness = 40 * 256,
+       .pwm_period_ns  = 1000000000 / (100 * 256 * 20),
+       .init           = hmt_bl_init,
+       .notify         = hmt_bl_notify,
+       .exit           = hmt_bl_exit,
+
+};
+
+static struct platform_device hmt_backlight_device = {
+       .name           = "pwm-backlight",
+       .dev            = {
+               .parent = &s3c_device_timer[1].dev,
+               .platform_data = &hmt_backlight_data,
+       },
+};
+
+static struct s3c_fb_pd_win hmt_fb_win0 = {
+       .win_mode       = {
+               .pixclock       = 41094,
+               .left_margin    = 8,
+               .right_margin   = 13,
+               .upper_margin   = 7,
+               .lower_margin   = 5,
+               .hsync_len      = 3,
+               .vsync_len      = 1,
+               .xres           = 800,
+               .yres           = 480,
+       },
+       .max_bpp        = 32,
+       .default_bpp    = 16,
+};
+
+/* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
+static struct s3c_fb_platdata hmt_lcd_pdata __initdata = {
+       .setup_gpio     = s3c64xx_fb_gpio_setup_24bpp,
+       .win[0]         = &hmt_fb_win0,
+       .vidcon0        = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
+       .vidcon1        = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
+};
+
+static struct mtd_partition hmt_nand_part[] = {
+       [0] = {
+               .name   = "uboot",
+               .size   = SZ_512K,
+               .offset = 0,
+       },
+       [1] = {
+               .name   = "uboot-env1",
+               .size   = SZ_256K,
+               .offset = SZ_512K,
+       },
+       [2] = {
+               .name   = "uboot-env2",
+               .size   = SZ_256K,
+               .offset = SZ_512K + SZ_256K,
+       },
+       [3] = {
+               .name   = "kernel",
+               .size   = SZ_2M,
+               .offset = SZ_1M,
+       },
+       [4] = {
+               .name   = "rootfs",
+               .size   = MTDPART_SIZ_FULL,
+               .offset = SZ_1M + SZ_2M,
+       },
+};
+
+static struct s3c2410_nand_set hmt_nand_sets[] = {
+       [0] = {
+               .name           = "nand",
+               .nr_chips       = 1,
+               .nr_partitions  = ARRAY_SIZE(hmt_nand_part),
+               .partitions     = hmt_nand_part,
+       },
+};
+
+static struct s3c2410_platform_nand hmt_nand_info = {
+       .tacls          = 25,
+       .twrph0         = 55,
+       .twrph1         = 40,
+       .nr_sets        = ARRAY_SIZE(hmt_nand_sets),
+       .sets           = hmt_nand_sets,
+};
+
+static struct gpio_led hmt_leds[] = {
+       { /* left function keys */
+               .name                   = "left:blue",
+               .gpio                   = S3C64XX_GPO(12),
+               .default_trigger        = "default-on",
+       },
+       { /* right function keys - red */
+               .name                   = "right:red",
+               .gpio                   = S3C64XX_GPO(13),
+       },
+       { /* right function keys - green */
+               .name                   = "right:green",
+               .gpio                   = S3C64XX_GPO(14),
+       },
+       { /* right function keys - blue */
+               .name                   = "right:blue",
+               .gpio                   = S3C64XX_GPO(15),
+               .default_trigger        = "default-on",
+       },
+};
+
+static struct gpio_led_platform_data hmt_led_data = {
+       .num_leds = ARRAY_SIZE(hmt_leds),
+       .leds = hmt_leds,
+};
+
+static struct platform_device hmt_leds_device = {
+       .name                   = "leds-gpio",
+       .id                     = -1,
+       .dev.platform_data      = &hmt_led_data,
+};
+
+static struct map_desc hmt_iodesc[] = {};
+
+static struct platform_device *hmt_devices[] __initdata = {
+       &s3c_device_i2c0,
+       &s3c_device_nand,
+       &s3c_device_fb,
+       &s3c_device_usb,
+       &s3c_device_timer[1],
+       &hmt_backlight_device,
+       &hmt_leds_device,
+};
+
+static void __init hmt_map_io(void)
+{
+       s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
+       s3c24xx_init_clocks(12000000);
+       s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
+}
+
+static void __init hmt_machine_init(void)
+{
+       s3c_i2c0_set_platdata(NULL);
+       s3c_fb_set_platdata(&hmt_lcd_pdata);
+       s3c_device_nand.dev.platform_data = &hmt_nand_info;
+
+       gpio_request(S3C64XX_GPC(7), "usb power");
+       gpio_direction_output(S3C64XX_GPC(7), 0);
+       gpio_request(S3C64XX_GPM(0), "usb power");
+       gpio_direction_output(S3C64XX_GPM(0), 1);
+       gpio_request(S3C64XX_GPK(7), "usb power");
+       gpio_direction_output(S3C64XX_GPK(7), 1);
+       gpio_request(S3C64XX_GPF(13), "usb power");
+       gpio_direction_output(S3C64XX_GPF(13), 1);
+
+       platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
+}
+
+MACHINE_START(HMT, "Airgoo-HMT")
+       /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
+       .phys_io        = S3C_PA_UART & 0xfff00000,
+       .io_pg_offst    = (((u32)S3C_VA_UART) >> 18) & 0xfffc,
+       .boot_params    = S3C64XX_PA_SDRAM + 0x100,
+       .init_irq       = s3c6410_init_irq,
+       .map_io         = hmt_map_io,
+       .init_machine   = hmt_machine_init,
+       .timer          = &s3c24xx_timer,
+MACHINE_END