linux/arch/arm/mach-s3c24xx/mach-gta02.c
Linus Torvalds dfc25e4503 ARM: SoC: cleanups for 3.15
These cleanup patches are mainly move stuff around and should all
 be harmless. They are mainly split out so that other branches can
 be based on top to avoid conflicts.
 
 Notable changes are:
 
 * We finally remove all mach/timex.h, after CLOCK_TICK_RATE is no
   longer used. (Uwe Kleine-König)
 * The Qualcomm MSM platform is split out into legacy mach-msm and
   new-style mach-qcom, to allow easier maintainance of the new
   hardware support without regressions. (Kumar Gala)
 * A rework of some of the Kconfig logic to simplify multiplatform
   support (Rob Herring)
 * Samsung Exynos gets closer to supporting multiplatform (Sachin
   Kamat and others)
 * mach-bcm3528 gets merged into mach-bcm (Stephen Warren)
 * at91 gains some common clock framework support (Alexandre Belloni,
   Jean-Jacques Hiblot and other French people).
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Merge tag 'cleanup-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanups from Arnd Bergmann:
 "These cleanup patches are mainly move stuff around and should all be
  harmless.  They are mainly split out so that other branches can be
  based on top to avoid conflicts.

  Notable changes are:

   - We finally remove all mach/timex.h, after CLOCK_TICK_RATE is no
     longer used (Uwe Kleine-König)
   - The Qualcomm MSM platform is split out into legacy mach-msm and
     new-style mach-qcom, to allow easier maintainance of the new
     hardware support without regressions (Kumar Gala)
   - A rework of some of the Kconfig logic to simplify multiplatform
     support (Rob Herring)
   - Samsung Exynos gets closer to supporting multiplatform (Sachin
     Kamat and others)
   - mach-bcm3528 gets merged into mach-bcm (Stephen Warren)
   - at91 gains some common clock framework support (Alexandre Belloni,
     Jean-Jacques Hiblot and other French people)"

* tag 'cleanup-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (89 commits)
  ARM: hisi: select HAVE_ARM_SCU only for SMP
  ARM: efm32: allow uncompress debug output
  ARM: prima2: build reset code standalone
  ARM: at91: add PWM clock
  ARM: at91: move sam9261 SoC to common clk
  ARM: at91: prepare common clk transition for sam9261 SoC
  ARM: at91: updated the at91_dt_defconfig with support for the ADS7846
  ARM: at91: dt: sam9261: Device Tree support for the at91sam9261ek
  ARM: at91: dt: defconfig: Added the sam9261 to the list of DT-enabled SOCs
  ARM: at91: dt: Add at91sam9261 dt SoC support
  ARM: at91: switch sam9rl to common clock framework
  ARM: at91/dt: define main clk frequency of at91sam9rlek
  ARM: at91/dt: define at91sam9rl clocks
  ARM: at91: prepare common clk transition for sam9rl SoCs
  ARM: at91: prepare sam9 dt boards transition to common clk
  ARM: at91: dt: sam9rl: Device Tree for the at91sam9rlek
  ARM: at91/defconfig: Add the sam9rl to the list of DT-enabled SOCs
  ARM: at91: Add at91sam9rl DT SoC support
  ARM: at91: prepare at91sam9rl DT transition
  ARM: at91/defconfig: refresh at91sam9260_9g20_defconfig
  ...
2014-04-05 13:51:19 -07:00

598 lines
14 KiB
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/gpio_keys.h>
#include <linux/workqueue.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/mmc/host.h>
#include <linux/mfd/pcf50633/adc.h>
#include <linux/mfd/pcf50633/backlight.h>
#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/gpio.h>
#include <linux/mfd/pcf50633/mbc.h>
#include <linux/mfd/pcf50633/pmic.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/regulator/machine.h>
#include <linux/spi/spi.h>
#include <linux/spi/s3c24xx.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <linux/platform_data/i2c-s3c2410.h>
#include <linux/platform_data/mtd-nand-s3c2410.h>
#include <linux/platform_data/touchscreen-s3c2410.h>
#include <linux/platform_data/usb-ohci-s3c2410.h>
#include <linux/platform_data/usb-s3c2410_udc.h>
#include <mach/fb.h>
#include <mach/hardware.h>
#include <mach/regs-gpio.h>
#include <mach/regs-irq.h>
#include <mach/gpio-samsung.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/gpio-cfg.h>
#include <plat/pm.h>
#include <plat/samsung-time.h>
#include "common.h"
#include "gta02.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(gta02_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 =
DEFINE_RES_MEM(GTA02_FLASH_BASE, GTA02_FLASH_SIZE);
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));
samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
}
/* 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,
&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 = s3c2442_init_irq,
.init_machine = gta02_machine_init,
.init_time = samsung_timer_init,
.restart = s3c244x_restart,
MACHINE_END