mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 00:48:50 +00:00
b2a13da505
Since commit 67e67df8da ("gta02: Use pcf50633 backlight driver instead
of platform backlight driver.") the list of gta02 pmu children is empty
therefore looping through it and adding devices is a no-op.
This also fixes the GCC v8.1 W=1 warning:
arch/arm/mach-s3c24xx/mach-gta02.c: In function 'gta02_pmu_attach_child_devices':
arch/arm/mach-s3c24xx/mach-gta02.c:538:16: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
for (n = 0; n < ARRAY_SIZE(gta02_devices_pmu_children); n++)
^
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
546 lines
12 KiB
C
546 lines
12 KiB
C
// 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 <laforge@openmoko.org>
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// Andy Green <andy@openmoko.org>
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// Werner Almesberger <werner@openmoko.org>
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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.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.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 <mach/fb.h>
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#include <mach/hardware.h>
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#include <mach/regs-gpio.h>
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#include <mach/regs-irq.h>
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#include <mach/gpio-samsung.h>
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#include <plat/cpu.h>
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#include <plat/devs.h>
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#include <plat/gpio-cfg.h>
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#include <plat/pm.h>
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#include <plat/samsung-time.h>
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#include "common.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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long delay = 0;
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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 delay;
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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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.ecc_mode = NAND_ECC_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 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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samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_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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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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};
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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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|
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platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
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pm_power_off = gta02_poweroff;
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|
|
|
regulator_has_full_constraints();
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|
}
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|
|
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static void __init gta02_init_time(void)
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|
{
|
|
s3c2442_init_clocks(12000000);
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|
samsung_timer_init();
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|
}
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|
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MACHINE_START(NEO1973_GTA02, "GTA02")
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/* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
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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
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