1 files changed, 605 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c24xx/mach-gta02.c b/arch/arm/mach-s3c24xx/mach-gta02.c
new file mode 100644
index 000000000000..d0e0ad4e6598
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/mach-gta02.c
@@ -0,0 +1,605 @@
+/*
+ * linux/arch/arm/mach-s3c2442/mach-gta02.c
+ *
+ * S3C2442 Machine Support for Openmoko GTA02 / FreeRunner.
+ *
+ * Copyright (C) 2006-2009 by Openmoko, Inc.
+ * Authors: Harald Welte <laforge@openmoko.org>
+ *          Andy Green <andy@openmoko.org>
+ *          Werner Almesberger <werner@openmoko.org>
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+#include <linux/serial_core.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/s3c24xx.h>
+
+#include <linux/mmc/host.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/io.h>
+
+#include <linux/i2c.h>
+#include <linux/regulator/machine.h>
+
+#include <linux/mfd/pcf50633/core.h>
+#include <linux/mfd/pcf50633/mbc.h>
+#include <linux/mfd/pcf50633/adc.h>
+#include <linux/mfd/pcf50633/gpio.h>
+#include <linux/mfd/pcf50633/pmic.h>
+#include <linux/mfd/pcf50633/backlight.h>
+
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include <mach/regs-irq.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-gpioj.h>
+#include <mach/fb.h>
+
+#include <plat/usb-control.h>
+#include <mach/regs-mem.h>
+#include <mach/hardware.h>
+
+#include <mach/gta02.h>
+
+#include <plat/regs-serial.h>
+#include <plat/nand.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+#include <plat/pm.h>
+#include <plat/udc.h>
+#include <plat/gpio-cfg.h>
+#include <plat/iic.h>
+#include <plat/ts.h>
+
+#include "common.h"
+
+static struct pcf50633 *gta02_pcf;
+
+/*
+ * This gets called frequently when we paniced.
+ */
+
+static long gta02_panic_blink(int state)
+{
+        long delay = 0;
+        char led;
+
+        led = (state) ? 1 : 0;
+        gpio_direction_output(GTA02_GPIO_AUX_LED, led);
+
+        return delay;
+}
+
+
+static struct map_desc gta02_iodesc[] __initdata = {
+        {
+                .virtual        = 0xe0000000,
+                .pfn            = __phys_to_pfn(S3C2410_CS3 + 0x01000000),
+                .length         = SZ_1M,
+                .type           = MT_DEVICE
+        },
+};
+
+#define UCON (S3C2410_UCON_DEFAULT | S3C2443_UCON_RXERR_IRQEN)
+#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
+#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
+
+static struct s3c2410_uartcfg gta02_uartcfgs[] = {
+        [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,
+        },
+};
+
+#ifdef CONFIG_CHARGER_PCF50633
+/*
+ * On GTA02 the 1A charger features a 48K resistor to 0V on the ID pin.
+ * We use this to recognize that we can pull 1A from the USB socket.
+ *
+ * These constants are the measured pcf50633 ADC levels with the 1A
+ * charger / 48K resistor, and with no pulldown resistor.
+ */
+
+#define ADC_NOM_CHG_DETECT_1A 6
+#define ADC_NOM_CHG_DETECT_USB 43
+
+static void
+gta02_configure_pmu_for_charger(struct pcf50633 *pcf, void *unused, int res)
+{
+        int  ma;
+
+        /* Interpret charger type */
+        if (res < ((ADC_NOM_CHG_DETECT_USB + ADC_NOM_CHG_DETECT_1A) / 2)) {
+
+                /*
+                 * Sanity - stop GPO driving out now that we have a 1A charger
+                 * GPO controls USB Host power generation on GTA02
+                 */
+                pcf50633_gpio_set(pcf, PCF50633_GPO, 0);
+
+                ma = 1000;
+        } else
+                ma = 100;
+
+        pcf50633_mbc_usb_curlim_set(pcf, ma);
+}
+
+static struct delayed_work gta02_charger_work;
+static int gta02_usb_vbus_draw;
+
+static void gta02_charger_worker(struct work_struct *work)
+{
+        if (gta02_usb_vbus_draw) {
+                pcf50633_mbc_usb_curlim_set(gta02_pcf, gta02_usb_vbus_draw);
+                return;
+        }
+
+#ifdef CONFIG_PCF50633_ADC
+        pcf50633_adc_async_read(gta02_pcf,
+                                PCF50633_ADCC1_MUX_ADCIN1,
+                                PCF50633_ADCC1_AVERAGE_16,
+                                gta02_configure_pmu_for_charger,
+                                NULL);
+#else
+        /*
+         * If the PCF50633 ADC is disabled we fallback to a
+         * 100mA limit for safety.
+         */
+        pcf50633_mbc_usb_curlim_set(pcf, 100);
+#endif
+}
+
+#define GTA02_CHARGER_CONFIGURE_TIMEOUT ((3000 * HZ) / 1000)
+
+static void gta02_pmu_event_callback(struct pcf50633 *pcf, int irq)
+{
+        if (irq == PCF50633_IRQ_USBINS) {
+                schedule_delayed_work(&gta02_charger_work,
+                                      GTA02_CHARGER_CONFIGURE_TIMEOUT);
+
+                return;
+        }
+
+        if (irq == PCF50633_IRQ_USBREM) {
+                cancel_delayed_work_sync(&gta02_charger_work);
+                gta02_usb_vbus_draw = 0;
+        }
+}
+
+static void gta02_udc_vbus_draw(unsigned int ma)
+{
+        if (!gta02_pcf)
+                return;
+
+        gta02_usb_vbus_draw = ma;
+
+        schedule_delayed_work(&gta02_charger_work,
+                              GTA02_CHARGER_CONFIGURE_TIMEOUT);
+}
+#else /* !CONFIG_CHARGER_PCF50633 */
+#define gta02_pmu_event_callback        NULL
+#define gta02_udc_vbus_draw             NULL
+#endif
+
+/*
+ * This is called when pc50633 is probed, unfortunately quite late in the
+ * day since it is an I2C bus device. Here we can belatedly define some
+ * platform devices with the advantage that we can mark the pcf50633 as the
+ * parent. This makes them get suspended and resumed with their parent
+ * the pcf50633 still around.
+ */
+
+static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf);
+
+
+static char *gta02_batteries[] = {
+        "battery",
+};
+
+static struct pcf50633_bl_platform_data gta02_backlight_data = {
+        .default_brightness = 0x3f,
+        .default_brightness_limit = 0,
+        .ramp_time = 5,
+};
+
+static struct pcf50633_platform_data gta02_pcf_pdata = {
+        .resumers = {
+                [0] =   PCF50633_INT1_USBINS |
+                        PCF50633_INT1_USBREM |
+                        PCF50633_INT1_ALARM,
+                [1] =   PCF50633_INT2_ONKEYF,
+                [2] =   PCF50633_INT3_ONKEY1S,
+                [3] =   PCF50633_INT4_LOWSYS |
+                        PCF50633_INT4_LOWBAT |
+                        PCF50633_INT4_HIGHTMP,
+        },
+
+        .batteries = gta02_batteries,
+        .num_batteries = ARRAY_SIZE(gta02_batteries),
+
+        .charger_reference_current_ma = 1000,
+
+        .backlight_data = &gta02_backlight_data,
+
+        .reg_init_data = {
+                [PCF50633_REGULATOR_AUTO] = {
+                        .constraints = {
+                                .min_uV = 3300000,
+                                .max_uV = 3300000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                                .always_on = 1,
+                                .apply_uV = 1,
+                        },
+                },
+                [PCF50633_REGULATOR_DOWN1] = {
+                        .constraints = {
+                                .min_uV = 1300000,
+                                .max_uV = 1600000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                                .always_on = 1,
+                                .apply_uV = 1,
+                        },
+                },
+                [PCF50633_REGULATOR_DOWN2] = {
+                        .constraints = {
+                                .min_uV = 1800000,
+                                .max_uV = 1800000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                                .apply_uV = 1,
+                                .always_on = 1,
+                        },
+                },
+                [PCF50633_REGULATOR_HCLDO] = {
+                        .constraints = {
+                                .min_uV = 2000000,
+                                .max_uV = 3300000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                                .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
+                                                REGULATOR_CHANGE_STATUS,
+                        },
+                },
+                [PCF50633_REGULATOR_LDO1] = {
+                        .constraints = {
+                                .min_uV = 3300000,
+                                .max_uV = 3300000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                                .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+                                .apply_uV = 1,
+                        },
+                },
+                [PCF50633_REGULATOR_LDO2] = {
+                        .constraints = {
+                                .min_uV = 3300000,
+                                .max_uV = 3300000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                                .apply_uV = 1,
+                        },
+                },
+                [PCF50633_REGULATOR_LDO3] = {
+                        .constraints = {
+                                .min_uV = 3000000,
+                                .max_uV = 3000000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                                .apply_uV = 1,
+                        },
+                },
+                [PCF50633_REGULATOR_LDO4] = {
+                        .constraints = {
+                                .min_uV = 3200000,
+                                .max_uV = 3200000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                                .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+                                .apply_uV = 1,
+                        },
+                },
+                [PCF50633_REGULATOR_LDO5] = {
+                        .constraints = {
+                                .min_uV = 3000000,
+                                .max_uV = 3000000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                                .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+                                .apply_uV = 1,
+                        },
+                },
+                [PCF50633_REGULATOR_LDO6] = {
+                        .constraints = {
+                                .min_uV = 3000000,
+                                .max_uV = 3000000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                        },
+                },
+                [PCF50633_REGULATOR_MEMLDO] = {
+                        .constraints = {
+                                .min_uV = 1800000,
+                                .max_uV = 1800000,
+                                .valid_modes_mask = REGULATOR_MODE_NORMAL,
+                        },
+                },
+
+        },
+        .probe_done = gta02_pmu_attach_child_devices,
+        .mbc_event_callback = gta02_pmu_event_callback,
+};
+
+
+/* NOR Flash. */
+
+#define GTA02_FLASH_BASE        0x18000000 /* GCS3 */
+#define GTA02_FLASH_SIZE        0x200000 /* 2MBytes */
+
+static struct physmap_flash_data gta02_nor_flash_data = {
+        .width          = 2,
+};
+
+static struct resource gta02_nor_flash_resource = {
+        .start          = GTA02_FLASH_BASE,
+        .end            = GTA02_FLASH_BASE + GTA02_FLASH_SIZE - 1,
+        .flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device gta02_nor_flash = {
+        .name           = "physmap-flash",
+        .id             = 0,
+        .dev            = {
+                .platform_data  = &gta02_nor_flash_data,
+        },
+        .resource       = &gta02_nor_flash_resource,
+        .num_resources  = 1,
+};
+
+
+static struct platform_device s3c24xx_pwm_device = {
+        .name           = "s3c24xx_pwm",
+        .num_resources  = 0,
+};
+
+static struct platform_device gta02_dfbmcs320_device = {
+        .name = "dfbmcs320",
+};
+
+static struct i2c_board_info gta02_i2c_devs[] __initdata = {
+        {
+                I2C_BOARD_INFO("pcf50633", 0x73),
+                .irq = GTA02_IRQ_PCF50633,
+                .platform_data = &gta02_pcf_pdata,
+        },
+        {
+                I2C_BOARD_INFO("wm8753", 0x1a),
+        },
+};
+
+static struct s3c2410_nand_set __initdata gta02_nand_sets[] = {
+        [0] = {
+                /*
+                 * This name is also hard-coded in the boot loaders, so
+                 * changing it would would require all users to upgrade
+                 * their boot loaders, some of which are stored in a NOR
+                 * that is considered to be immutable.
+                 */
+                .name           = "neo1973-nand",
+                .nr_chips       = 1,
+                .flash_bbt      = 1,
+        },
+};
+
+/*
+ * Choose a set of timings derived from S3C@2442B MCP54
+ * data sheet (K5D2G13ACM-D075 MCP Memory).
+ */
+
+static struct s3c2410_platform_nand __initdata gta02_nand_info = {
+        .tacls          = 0,
+        .twrph0         = 25,
+        .twrph1         = 15,
+        .nr_sets        = ARRAY_SIZE(gta02_nand_sets),
+        .sets           = gta02_nand_sets,
+};
+
+
+/* Get PMU to set USB current limit accordingly. */
+static struct s3c2410_udc_mach_info gta02_udc_cfg __initdata = {
+        .vbus_draw      = gta02_udc_vbus_draw,
+        .pullup_pin = GTA02_GPIO_USB_PULLUP,
+};
+
+/* USB */
+static struct s3c2410_hcd_info gta02_usb_info __initdata = {
+        .port[0]        = {
+                .flags  = S3C_HCDFLG_USED,
+        },
+        .port[1]        = {
+                .flags  = 0,
+        },
+};
+
+/* Touchscreen */
+static struct s3c2410_ts_mach_info gta02_ts_info = {
+        .delay                  = 10000,
+        .presc                  = 0xff, /* slow as we can go */
+        .oversampling_shift     = 2,
+};
+
+/* Buttons */
+static struct gpio_keys_button gta02_buttons[] = {
+        {
+                .gpio = GTA02_GPIO_AUX_KEY,
+                .code = KEY_PHONE,
+                .desc = "Aux",
+                .type = EV_KEY,
+                .debounce_interval = 100,
+        },
+        {
+                .gpio = GTA02_GPIO_HOLD_KEY,
+                .code = KEY_PAUSE,
+                .desc = "Hold",
+                .type = EV_KEY,
+                .debounce_interval = 100,
+        },
+};
+
+static struct gpio_keys_platform_data gta02_buttons_pdata = {
+        .buttons = gta02_buttons,
+        .nbuttons = ARRAY_SIZE(gta02_buttons),
+};
+
+static struct platform_device gta02_buttons_device = {
+        .name = "gpio-keys",
+        .id = -1,
+        .dev = {
+                .platform_data = &gta02_buttons_pdata,
+        },
+};
+
+static void __init gta02_map_io(void)
+{
+        s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc));
+        s3c24xx_init_clocks(12000000);
+        s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
+}
+
+
+/* These are the guys that don't need to be children of PMU. */
+
+static struct platform_device *gta02_devices[] __initdata = {
+        &s3c_device_ohci,
+        &s3c_device_wdt,
+        &s3c_device_sdi,
+        &s3c_device_usbgadget,
+        &s3c_device_nand,
+        &gta02_nor_flash,
+        &s3c24xx_pwm_device,
+        &s3c_device_iis,
+        &samsung_asoc_dma,
+        &s3c_device_i2c0,
+        &gta02_dfbmcs320_device,
+        &gta02_buttons_device,
+        &s3c_device_adc,
+        &s3c_device_ts,
+};
+
+/* These guys DO need to be children of PMU. */
+
+static struct platform_device *gta02_devices_pmu_children[] = {
+};
+
+
+/*
+ * This is called when pc50633 is probed, quite late in the day since it is an
+ * I2C bus device.  Here we can define platform devices with the advantage that
+ * we can mark the pcf50633 as the parent.  This makes them get suspended and
+ * resumed with their parent the pcf50633 still around.  All devices whose
+ * operation depends on something from pcf50633 must have this relationship
+ * made explicit like this, or suspend and resume will become an unreliable
+ * hellworld.
+ */
+
+static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf)
+{
+        int n;
+
+        /* Grab a copy of the now probed PMU pointer. */
+        gta02_pcf = pcf;
+
+        for (n = 0; n < ARRAY_SIZE(gta02_devices_pmu_children); n++)
+                gta02_devices_pmu_children[n]->dev.parent = pcf->dev;
+
+        platform_add_devices(gta02_devices_pmu_children,
+                             ARRAY_SIZE(gta02_devices_pmu_children));
+}
+
+static void gta02_poweroff(void)
+{
+        pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN, 1, 1);
+}
+
+static void __init gta02_machine_init(void)
+{
+        /* Set the panic callback to turn AUX LED on or off. */
+        panic_blink = gta02_panic_blink;
+
+        s3c_pm_init();
+
+#ifdef CONFIG_CHARGER_PCF50633
+        INIT_DELAYED_WORK(&gta02_charger_work, gta02_charger_worker);
+#endif
+
+        s3c24xx_udc_set_platdata(&gta02_udc_cfg);
+        s3c24xx_ts_set_platdata(&gta02_ts_info);
+        s3c_ohci_set_platdata(&gta02_usb_info);
+        s3c_nand_set_platdata(&gta02_nand_info);
+        s3c_i2c0_set_platdata(NULL);
+
+        i2c_register_board_info(0, gta02_i2c_devs, ARRAY_SIZE(gta02_i2c_devs));
+
+        platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
+        pm_power_off = gta02_poweroff;
+
+        regulator_has_full_constraints();
+}
+
+
+MACHINE_START(NEO1973_GTA02, "GTA02")
+        /* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
+        .atag_offset    = 0x100,
+        .map_io         = gta02_map_io,
+        .init_irq       = s3c24xx_init_irq,
+        .init_machine   = gta02_machine_init,
+        .timer          = &s3c24xx_timer,
+        .restart        = s3c2440_restart,
+MACHINE_END