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579 lines
13 KiB
579 lines
13 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// S3C2442 Machine Support for Openmoko GTA02 / FreeRunner. |
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// |
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// Copyright (C) 2006-2009 by Openmoko, Inc. |
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// Authors: Harald Welte <[email protected]> |
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// Andy Green <[email protected]> |
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// Werner Almesberger <[email protected]> |
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// All rights reserved. |
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#include <linux/kernel.h> |
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#include <linux/types.h> |
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#include <linux/interrupt.h> |
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#include <linux/list.h> |
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#include <linux/delay.h> |
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#include <linux/timer.h> |
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#include <linux/init.h> |
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#include <linux/gpio/machine.h> |
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#include <linux/gpio.h> |
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#include <linux/gpio_keys.h> |
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#include <linux/workqueue.h> |
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#include <linux/platform_device.h> |
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#include <linux/serial_core.h> |
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#include <linux/serial_s3c.h> |
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#include <linux/input.h> |
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#include <linux/io.h> |
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#include <linux/i2c.h> |
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#include <linux/mmc/host.h> |
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#include <linux/mfd/pcf50633/adc.h> |
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#include <linux/mfd/pcf50633/backlight.h> |
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#include <linux/mfd/pcf50633/core.h> |
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#include <linux/mfd/pcf50633/gpio.h> |
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#include <linux/mfd/pcf50633/mbc.h> |
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#include <linux/mfd/pcf50633/pmic.h> |
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#include <linux/mtd/mtd.h> |
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#include <linux/mtd/rawnand.h> |
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#include <linux/mtd/nand-ecc-sw-hamming.h> |
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#include <linux/mtd/partitions.h> |
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#include <linux/mtd/physmap.h> |
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#include <linux/regulator/machine.h> |
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#include <linux/spi/spi.h> |
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#include <linux/spi/s3c24xx.h> |
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#include <asm/irq.h> |
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#include <asm/mach-types.h> |
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#include <asm/mach/arch.h> |
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#include <asm/mach/map.h> |
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#include <asm/mach/irq.h> |
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#include <linux/platform_data/i2c-s3c2410.h> |
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#include <linux/platform_data/mtd-nand-s3c2410.h> |
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#include <linux/platform_data/touchscreen-s3c2410.h> |
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#include <linux/platform_data/usb-ohci-s3c2410.h> |
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#include <linux/platform_data/usb-s3c2410_udc.h> |
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#include <linux/platform_data/fb-s3c2410.h> |
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#include "regs-gpio.h" |
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#include "regs-irq.h" |
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#include "gpio-samsung.h" |
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#include "cpu.h" |
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#include "devs.h" |
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#include "gpio-cfg.h" |
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#include "pm.h" |
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#include "s3c24xx.h" |
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#include "gta02.h" |
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static struct pcf50633 *gta02_pcf; |
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/* |
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* This gets called frequently when we paniced. |
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*/ |
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static long gta02_panic_blink(int state) |
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{ |
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char led; |
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led = (state) ? 1 : 0; |
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gpio_direction_output(GTA02_GPIO_AUX_LED, led); |
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return 0; |
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} |
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static struct map_desc gta02_iodesc[] __initdata = { |
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{ |
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.virtual = 0xe0000000, |
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.pfn = __phys_to_pfn(S3C2410_CS3 + 0x01000000), |
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.length = SZ_1M, |
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.type = MT_DEVICE |
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}, |
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}; |
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#define UCON (S3C2410_UCON_DEFAULT | S3C2443_UCON_RXERR_IRQEN) |
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#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB) |
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#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE) |
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static struct s3c2410_uartcfg gta02_uartcfgs[] = { |
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[0] = { |
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.hwport = 0, |
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.flags = 0, |
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.ucon = UCON, |
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.ulcon = ULCON, |
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.ufcon = UFCON, |
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}, |
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[1] = { |
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.hwport = 1, |
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.flags = 0, |
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.ucon = UCON, |
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.ulcon = ULCON, |
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.ufcon = UFCON, |
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}, |
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[2] = { |
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.hwport = 2, |
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.flags = 0, |
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.ucon = UCON, |
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.ulcon = ULCON, |
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.ufcon = UFCON, |
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}, |
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}; |
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#ifdef CONFIG_CHARGER_PCF50633 |
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/* |
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* On GTA02 the 1A charger features a 48K resistor to 0V on the ID pin. |
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* We use this to recognize that we can pull 1A from the USB socket. |
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* |
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* These constants are the measured pcf50633 ADC levels with the 1A |
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* charger / 48K resistor, and with no pulldown resistor. |
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*/ |
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#define ADC_NOM_CHG_DETECT_1A 6 |
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#define ADC_NOM_CHG_DETECT_USB 43 |
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#ifdef CONFIG_PCF50633_ADC |
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static void |
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gta02_configure_pmu_for_charger(struct pcf50633 *pcf, void *unused, int res) |
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{ |
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int ma; |
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/* Interpret charger type */ |
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if (res < ((ADC_NOM_CHG_DETECT_USB + ADC_NOM_CHG_DETECT_1A) / 2)) { |
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/* |
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* Sanity - stop GPO driving out now that we have a 1A charger |
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* GPO controls USB Host power generation on GTA02 |
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*/ |
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pcf50633_gpio_set(pcf, PCF50633_GPO, 0); |
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ma = 1000; |
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} else |
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ma = 100; |
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pcf50633_mbc_usb_curlim_set(pcf, ma); |
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} |
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#endif |
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static struct delayed_work gta02_charger_work; |
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static int gta02_usb_vbus_draw; |
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static void gta02_charger_worker(struct work_struct *work) |
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{ |
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if (gta02_usb_vbus_draw) { |
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pcf50633_mbc_usb_curlim_set(gta02_pcf, gta02_usb_vbus_draw); |
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return; |
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} |
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#ifdef CONFIG_PCF50633_ADC |
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pcf50633_adc_async_read(gta02_pcf, |
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PCF50633_ADCC1_MUX_ADCIN1, |
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PCF50633_ADCC1_AVERAGE_16, |
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gta02_configure_pmu_for_charger, |
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NULL); |
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#else |
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/* |
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* If the PCF50633 ADC is disabled we fallback to a |
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* 100mA limit for safety. |
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*/ |
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pcf50633_mbc_usb_curlim_set(gta02_pcf, 100); |
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#endif |
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} |
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#define GTA02_CHARGER_CONFIGURE_TIMEOUT ((3000 * HZ) / 1000) |
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static void gta02_pmu_event_callback(struct pcf50633 *pcf, int irq) |
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{ |
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if (irq == PCF50633_IRQ_USBINS) { |
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schedule_delayed_work(>a02_charger_work, |
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GTA02_CHARGER_CONFIGURE_TIMEOUT); |
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return; |
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} |
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if (irq == PCF50633_IRQ_USBREM) { |
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cancel_delayed_work_sync(>a02_charger_work); |
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gta02_usb_vbus_draw = 0; |
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} |
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} |
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static void gta02_udc_vbus_draw(unsigned int ma) |
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{ |
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if (!gta02_pcf) |
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return; |
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gta02_usb_vbus_draw = ma; |
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schedule_delayed_work(>a02_charger_work, |
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GTA02_CHARGER_CONFIGURE_TIMEOUT); |
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} |
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#else /* !CONFIG_CHARGER_PCF50633 */ |
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#define gta02_pmu_event_callback NULL |
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#define gta02_udc_vbus_draw NULL |
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#endif |
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static char *gta02_batteries[] = { |
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"battery", |
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}; |
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static struct pcf50633_bl_platform_data gta02_backlight_data = { |
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.default_brightness = 0x3f, |
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.default_brightness_limit = 0, |
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.ramp_time = 5, |
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}; |
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static struct pcf50633_platform_data gta02_pcf_pdata = { |
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.resumers = { |
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[0] = PCF50633_INT1_USBINS | |
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PCF50633_INT1_USBREM | |
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PCF50633_INT1_ALARM, |
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[1] = PCF50633_INT2_ONKEYF, |
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[2] = PCF50633_INT3_ONKEY1S, |
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[3] = PCF50633_INT4_LOWSYS | |
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PCF50633_INT4_LOWBAT | |
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PCF50633_INT4_HIGHTMP, |
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}, |
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.batteries = gta02_batteries, |
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.num_batteries = ARRAY_SIZE(gta02_batteries), |
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.charger_reference_current_ma = 1000, |
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.backlight_data = >a02_backlight_data, |
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.reg_init_data = { |
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[PCF50633_REGULATOR_AUTO] = { |
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.constraints = { |
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.min_uV = 3300000, |
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.max_uV = 3300000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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.always_on = 1, |
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.apply_uV = 1, |
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}, |
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}, |
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[PCF50633_REGULATOR_DOWN1] = { |
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.constraints = { |
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.min_uV = 1300000, |
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.max_uV = 1600000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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.always_on = 1, |
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.apply_uV = 1, |
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}, |
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}, |
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[PCF50633_REGULATOR_DOWN2] = { |
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.constraints = { |
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.min_uV = 1800000, |
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.max_uV = 1800000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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.apply_uV = 1, |
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.always_on = 1, |
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}, |
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}, |
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[PCF50633_REGULATOR_HCLDO] = { |
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.constraints = { |
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.min_uV = 2000000, |
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.max_uV = 3300000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | |
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REGULATOR_CHANGE_STATUS, |
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}, |
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}, |
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[PCF50633_REGULATOR_LDO1] = { |
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.constraints = { |
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.min_uV = 3300000, |
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.max_uV = 3300000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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.valid_ops_mask = REGULATOR_CHANGE_STATUS, |
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.apply_uV = 1, |
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}, |
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}, |
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[PCF50633_REGULATOR_LDO2] = { |
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.constraints = { |
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.min_uV = 3300000, |
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.max_uV = 3300000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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.apply_uV = 1, |
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}, |
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}, |
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[PCF50633_REGULATOR_LDO3] = { |
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.constraints = { |
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.min_uV = 3000000, |
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.max_uV = 3000000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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.apply_uV = 1, |
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}, |
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}, |
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[PCF50633_REGULATOR_LDO4] = { |
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.constraints = { |
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.min_uV = 3200000, |
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.max_uV = 3200000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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.valid_ops_mask = REGULATOR_CHANGE_STATUS, |
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.apply_uV = 1, |
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}, |
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}, |
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[PCF50633_REGULATOR_LDO5] = { |
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.constraints = { |
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.min_uV = 3000000, |
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.max_uV = 3000000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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.valid_ops_mask = REGULATOR_CHANGE_STATUS, |
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.apply_uV = 1, |
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}, |
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}, |
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[PCF50633_REGULATOR_LDO6] = { |
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.constraints = { |
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.min_uV = 3000000, |
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.max_uV = 3000000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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}, |
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}, |
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[PCF50633_REGULATOR_MEMLDO] = { |
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.constraints = { |
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.min_uV = 1800000, |
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.max_uV = 1800000, |
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.valid_modes_mask = REGULATOR_MODE_NORMAL, |
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}, |
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}, |
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}, |
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.mbc_event_callback = gta02_pmu_event_callback, |
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}; |
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/* NOR Flash. */ |
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#define GTA02_FLASH_BASE 0x18000000 /* GCS3 */ |
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#define GTA02_FLASH_SIZE 0x200000 /* 2MBytes */ |
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static struct physmap_flash_data gta02_nor_flash_data = { |
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.width = 2, |
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}; |
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static struct resource gta02_nor_flash_resource = |
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DEFINE_RES_MEM(GTA02_FLASH_BASE, GTA02_FLASH_SIZE); |
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static struct platform_device gta02_nor_flash = { |
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.name = "physmap-flash", |
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.id = 0, |
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.dev = { |
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.platform_data = >a02_nor_flash_data, |
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}, |
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.resource = >a02_nor_flash_resource, |
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.num_resources = 1, |
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}; |
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static struct platform_device s3c24xx_pwm_device = { |
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.name = "s3c24xx_pwm", |
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.num_resources = 0, |
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}; |
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static struct platform_device gta02_dfbmcs320_device = { |
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.name = "dfbmcs320", |
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}; |
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static struct i2c_board_info gta02_i2c_devs[] __initdata = { |
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{ |
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I2C_BOARD_INFO("pcf50633", 0x73), |
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.irq = GTA02_IRQ_PCF50633, |
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.platform_data = >a02_pcf_pdata, |
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}, |
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{ |
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I2C_BOARD_INFO("wm8753", 0x1a), |
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}, |
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}; |
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static struct s3c2410_nand_set __initdata gta02_nand_sets[] = { |
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[0] = { |
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/* |
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* This name is also hard-coded in the boot loaders, so |
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* changing it would would require all users to upgrade |
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* their boot loaders, some of which are stored in a NOR |
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* that is considered to be immutable. |
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*/ |
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.name = "neo1973-nand", |
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.nr_chips = 1, |
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.flash_bbt = 1, |
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}, |
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}; |
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/* |
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* Choose a set of timings derived from S3C@2442B MCP54 |
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* data sheet (K5D2G13ACM-D075 MCP Memory). |
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*/ |
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static struct s3c2410_platform_nand __initdata gta02_nand_info = { |
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.tacls = 0, |
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.twrph0 = 25, |
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.twrph1 = 15, |
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.nr_sets = ARRAY_SIZE(gta02_nand_sets), |
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.sets = gta02_nand_sets, |
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.engine_type = NAND_ECC_ENGINE_TYPE_SOFT, |
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}; |
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/* Get PMU to set USB current limit accordingly. */ |
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static struct s3c2410_udc_mach_info gta02_udc_cfg __initdata = { |
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.vbus_draw = gta02_udc_vbus_draw, |
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.pullup_pin = GTA02_GPIO_USB_PULLUP, |
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}; |
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/* USB */ |
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static struct s3c2410_hcd_info gta02_usb_info __initdata = { |
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.port[0] = { |
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.flags = S3C_HCDFLG_USED, |
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}, |
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.port[1] = { |
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.flags = 0, |
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}, |
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}; |
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/* Touchscreen */ |
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static struct s3c2410_ts_mach_info gta02_ts_info = { |
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.delay = 10000, |
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.presc = 0xff, /* slow as we can go */ |
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.oversampling_shift = 2, |
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}; |
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/* Buttons */ |
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static struct gpio_keys_button gta02_buttons[] = { |
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{ |
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.gpio = GTA02_GPIO_AUX_KEY, |
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.code = KEY_PHONE, |
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.desc = "Aux", |
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.type = EV_KEY, |
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.debounce_interval = 100, |
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}, |
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{ |
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.gpio = GTA02_GPIO_HOLD_KEY, |
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.code = KEY_PAUSE, |
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.desc = "Hold", |
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.type = EV_KEY, |
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.debounce_interval = 100, |
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}, |
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}; |
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static struct gpio_keys_platform_data gta02_buttons_pdata = { |
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.buttons = gta02_buttons, |
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.nbuttons = ARRAY_SIZE(gta02_buttons), |
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}; |
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static struct platform_device gta02_buttons_device = { |
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.name = "gpio-keys", |
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.id = -1, |
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.dev = { |
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.platform_data = >a02_buttons_pdata, |
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}, |
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}; |
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static struct gpiod_lookup_table gta02_audio_gpio_table = { |
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.dev_id = "neo1973-audio", |
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.table = { |
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GPIO_LOOKUP("GPIOJ", 2, "amp-shut", GPIO_ACTIVE_HIGH), |
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GPIO_LOOKUP("GPIOJ", 1, "hp", GPIO_ACTIVE_HIGH), |
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{ }, |
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}, |
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}; |
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static struct platform_device gta02_audio = { |
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.name = "neo1973-audio", |
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.id = -1, |
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}; |
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static struct gpiod_lookup_table gta02_mmc_gpio_table = { |
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.dev_id = "s3c2410-sdi", |
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.table = { |
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/* bus pins */ |
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GPIO_LOOKUP_IDX("GPIOE", 5, "bus", 0, GPIO_ACTIVE_HIGH), |
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GPIO_LOOKUP_IDX("GPIOE", 6, "bus", 1, GPIO_ACTIVE_HIGH), |
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GPIO_LOOKUP_IDX("GPIOE", 7, "bus", 2, GPIO_ACTIVE_HIGH), |
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GPIO_LOOKUP_IDX("GPIOE", 8, "bus", 3, GPIO_ACTIVE_HIGH), |
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GPIO_LOOKUP_IDX("GPIOE", 9, "bus", 4, GPIO_ACTIVE_HIGH), |
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GPIO_LOOKUP_IDX("GPIOE", 10, "bus", 5, GPIO_ACTIVE_HIGH), |
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{ }, |
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}, |
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}; |
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static void __init gta02_map_io(void) |
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{ |
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s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc)); |
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s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs)); |
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s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4); |
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} |
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/* These are the guys that don't need to be children of PMU. */ |
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|
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static struct platform_device *gta02_devices[] __initdata = { |
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&s3c_device_ohci, |
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&s3c_device_wdt, |
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&s3c_device_sdi, |
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&s3c_device_usbgadget, |
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&s3c_device_nand, |
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>a02_nor_flash, |
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&s3c24xx_pwm_device, |
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&s3c_device_iis, |
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&s3c_device_i2c0, |
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>a02_dfbmcs320_device, |
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>a02_buttons_device, |
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&s3c_device_adc, |
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&s3c_device_ts, |
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>a02_audio, |
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}; |
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static void gta02_poweroff(void) |
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{ |
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pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN, 1, 1); |
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} |
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static void __init gta02_machine_init(void) |
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{ |
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/* Set the panic callback to turn AUX LED on or off. */ |
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panic_blink = gta02_panic_blink; |
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|
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s3c_pm_init(); |
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|
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#ifdef CONFIG_CHARGER_PCF50633 |
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INIT_DELAYED_WORK(>a02_charger_work, gta02_charger_worker); |
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#endif |
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|
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s3c24xx_udc_set_platdata(>a02_udc_cfg); |
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s3c24xx_ts_set_platdata(>a02_ts_info); |
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s3c_ohci_set_platdata(>a02_usb_info); |
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s3c_nand_set_platdata(>a02_nand_info); |
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s3c_i2c0_set_platdata(NULL); |
|
|
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i2c_register_board_info(0, gta02_i2c_devs, ARRAY_SIZE(gta02_i2c_devs)); |
|
|
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/* Configure the I2S pins (GPE0...GPE4) in correct mode */ |
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s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2), |
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S3C_GPIO_PULL_NONE); |
|
|
|
gpiod_add_lookup_table(>a02_audio_gpio_table); |
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gpiod_add_lookup_table(>a02_mmc_gpio_table); |
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platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices)); |
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pm_power_off = gta02_poweroff; |
|
|
|
regulator_has_full_constraints(); |
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} |
|
|
|
static void __init gta02_init_time(void) |
|
{ |
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s3c2442_init_clocks(12000000); |
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s3c24xx_timer_init(); |
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} |
|
|
|
MACHINE_START(NEO1973_GTA02, "GTA02") |
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/* Maintainer: Nelson Castillo <[email protected]> */ |
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.atag_offset = 0x100, |
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.map_io = gta02_map_io, |
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.init_irq = s3c2442_init_irq, |
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.init_machine = gta02_machine_init, |
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.init_time = gta02_init_time, |
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MACHINE_END
|
|
|