forked from luck/tmp_suning_uos_patched
a9c0629cde
This driver adds support for the on-board CF socket. Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
503 lines
13 KiB
C
503 lines
13 KiB
C
/*
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* linux/arch/arm/mach-pxa/balloon3.c
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*
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* Support for Balloonboard.org Balloon3 board.
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*
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* Author: Nick Bane, Wookey, Jonathan McDowell
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* Created: June, 2006
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* Copyright: Toby Churchill Ltd
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* Derived from mainstone.c, by Nico Pitre
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/sysdev.h>
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#include <linux/interrupt.h>
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#include <linux/sched.h>
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#include <linux/bitops.h>
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#include <linux/fb.h>
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#include <linux/gpio.h>
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#include <linux/ioport.h>
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#include <linux/ucb1400.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/types.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/irq.h>
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#include <asm/sizes.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 <asm/mach/flash.h>
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#include <mach/pxa27x.h>
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#include <mach/balloon3.h>
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#include <mach/audio.h>
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#include <mach/pxafb.h>
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#include <mach/mmc.h>
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#include <mach/udc.h>
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#include <mach/pxa27x-udc.h>
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#include <mach/irda.h>
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#include <mach/ohci.h>
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#include <plat/i2c.h>
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#include "generic.h"
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#include "devices.h"
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/******************************************************************************
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* Pin configuration
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******************************************************************************/
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static unsigned long balloon3_pin_config[] __initdata = {
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/* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
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GPIO42_BTUART_RXD,
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GPIO43_BTUART_TXD,
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GPIO44_BTUART_CTS,
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GPIO45_BTUART_RTS,
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/* Reset, configured as GPIO wakeup source */
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GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
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/* LEDs */
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GPIO9_GPIO, /* NAND activity LED */
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GPIO10_GPIO, /* Heartbeat LED */
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/* AC97 */
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GPIO28_AC97_BITCLK,
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GPIO29_AC97_SDATA_IN_0,
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GPIO30_AC97_SDATA_OUT,
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GPIO31_AC97_SYNC,
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GPIO113_AC97_nRESET,
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GPIO95_GPIO,
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/* MMC */
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GPIO32_MMC_CLK,
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GPIO92_MMC_DAT_0,
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GPIO109_MMC_DAT_1,
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GPIO110_MMC_DAT_2,
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GPIO111_MMC_DAT_3,
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GPIO112_MMC_CMD,
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/* USB Host */
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GPIO88_USBH1_PWR,
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GPIO89_USBH1_PEN,
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/* PC Card */
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GPIO48_nPOE,
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GPIO49_nPWE,
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GPIO50_nPIOR,
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GPIO51_nPIOW,
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GPIO85_nPCE_1,
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GPIO54_nPCE_2,
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GPIO79_PSKTSEL,
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GPIO55_nPREG,
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GPIO56_nPWAIT,
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GPIO57_nIOIS16,
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};
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/******************************************************************************
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* Compatibility: Parameter parsing
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******************************************************************************/
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static unsigned long balloon3_irq_enabled;
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static unsigned long balloon3_features_present =
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(1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
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(1 << BALLOON3_FEATURE_AUDIO) |
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(1 << BALLOON3_FEATURE_TOPPOLY);
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int balloon3_has(enum balloon3_features feature)
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{
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return (balloon3_features_present & (1 << feature)) ? 1 : 0;
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}
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EXPORT_SYMBOL_GPL(balloon3_has);
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int __init parse_balloon3_features(char *arg)
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{
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if (!arg)
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return 0;
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return strict_strtoul(arg, 0, &balloon3_features_present);
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}
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early_param("balloon3_features", parse_balloon3_features);
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/******************************************************************************
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* NOR Flash
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******************************************************************************/
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#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
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static struct mtd_partition balloon3_nor_partitions[] = {
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{
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.name = "Flash",
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.offset = 0x00000000,
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.size = MTDPART_SIZ_FULL,
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}
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};
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static struct physmap_flash_data balloon3_flash_data[] = {
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{
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.width = 2, /* bankwidth in bytes */
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.parts = balloon3_nor_partitions,
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.nr_parts = ARRAY_SIZE(balloon3_nor_partitions)
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}
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};
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static struct resource balloon3_flash_resource = {
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.start = PXA_CS0_PHYS,
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.end = PXA_CS0_PHYS + SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device balloon3_flash = {
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.name = "physmap-flash",
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.id = 0,
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.resource = &balloon3_flash_resource,
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.num_resources = 1,
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.dev = {
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.platform_data = balloon3_flash_data,
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},
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};
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static void __init balloon3_nor_init(void)
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{
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platform_device_register(&balloon3_flash);
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}
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#else
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static inline void balloon3_nor_init(void) {}
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#endif
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/******************************************************************************
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* Audio and Touchscreen
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******************************************************************************/
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#if defined(CONFIG_TOUCHSCREEN_UCB1400) || \
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defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
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static struct ucb1400_pdata vpac270_ucb1400_pdata = {
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.irq = IRQ_GPIO(BALLOON3_GPIO_CODEC_IRQ),
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};
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static struct platform_device balloon3_ucb1400_device = {
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.name = "ucb1400_core",
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.id = -1,
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.dev = {
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.platform_data = &vpac270_ucb1400_pdata,
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},
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};
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static void __init balloon3_ts_init(void)
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{
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if (!balloon3_has(BALLOON3_FEATURE_AUDIO))
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return;
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pxa_set_ac97_info(NULL);
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platform_device_register(&balloon3_ucb1400_device);
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}
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#else
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static inline void balloon3_ts_init(void) {}
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#endif
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/******************************************************************************
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* Framebuffer
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******************************************************************************/
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#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
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static struct pxafb_mode_info balloon3_lcd_modes[] = {
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{
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.pixclock = 38000,
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.xres = 480,
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.yres = 640,
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.bpp = 16,
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.hsync_len = 8,
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.left_margin = 8,
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.right_margin = 8,
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.vsync_len = 2,
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.upper_margin = 4,
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.lower_margin = 5,
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.sync = 0,
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},
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};
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static struct pxafb_mach_info balloon3_lcd_screen = {
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.modes = balloon3_lcd_modes,
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.num_modes = ARRAY_SIZE(balloon3_lcd_modes),
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.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
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};
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static void balloon3_backlight_power(int on)
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{
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gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
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}
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static void __init balloon3_lcd_init(void)
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{
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int ret;
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if (!balloon3_has(BALLOON3_FEATURE_TOPPOLY))
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return;
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ret = gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, "BKL-ON");
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if (ret) {
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pr_err("Requesting BKL-ON GPIO failed!\n");
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goto err;
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}
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ret = gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
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if (ret) {
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pr_err("Setting BKL-ON GPIO direction failed!\n");
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goto err2;
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}
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balloon3_lcd_screen.pxafb_backlight_power = balloon3_backlight_power;
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set_pxa_fb_info(&balloon3_lcd_screen);
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return;
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err2:
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gpio_free(BALLOON3_GPIO_RUN_BACKLIGHT);
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err:
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return;
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}
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#else
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static inline void balloon3_lcd_init(void) {}
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#endif
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/******************************************************************************
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* SD/MMC card controller
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******************************************************************************/
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#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
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static struct pxamci_platform_data balloon3_mci_platform_data = {
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.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
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.gpio_card_detect = -1,
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.gpio_card_ro = -1,
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.gpio_power = -1,
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.detect_delay_ms = 200,
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};
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static void __init balloon3_mmc_init(void)
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{
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pxa_set_mci_info(&balloon3_mci_platform_data);
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}
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#else
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static inline void balloon3_mmc_init(void) {}
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#endif
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/******************************************************************************
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* USB Gadget
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******************************************************************************/
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#if defined(CONFIG_USB_GADGET_PXA27X)||defined(CONFIG_USB_GADGET_PXA27X_MODULE)
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static void balloon3_udc_command(int cmd)
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{
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if (cmd == PXA2XX_UDC_CMD_CONNECT)
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UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
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else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
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UP2OCR &= ~UP2OCR_DPPUE;
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}
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static int balloon3_udc_is_connected(void)
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{
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return 1;
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}
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static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
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.udc_command = balloon3_udc_command,
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.udc_is_connected = balloon3_udc_is_connected,
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.gpio_pullup = -1,
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};
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static void __init balloon3_udc_init(void)
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{
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pxa_set_udc_info(&balloon3_udc_info);
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platform_device_register(&balloon3_gpio_vbus);
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}
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#else
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static inline void balloon3_udc_init(void) {}
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#endif
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/******************************************************************************
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* IrDA
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******************************************************************************/
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#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
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static struct pxaficp_platform_data balloon3_ficp_platform_data = {
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.transceiver_cap = IR_FIRMODE | IR_SIRMODE | IR_OFF,
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};
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static void __init balloon3_irda_init(void)
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{
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pxa_set_ficp_info(&balloon3_ficp_platform_data);
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}
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#else
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static inline void balloon3_irda_init(void) {}
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#endif
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/******************************************************************************
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* USB Host
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******************************************************************************/
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#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
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static struct pxaohci_platform_data balloon3_ohci_info = {
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.port_mode = PMM_PERPORT_MODE,
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.flags = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
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};
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static void __init balloon3_uhc_init(void)
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{
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if (!balloon3_has(BALLOON3_FEATURE_OHCI))
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return;
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pxa_set_ohci_info(&balloon3_ohci_info);
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}
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#else
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static inline void balloon3_uhc_init(void) {}
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#endif
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/******************************************************************************
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* LEDs
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******************************************************************************/
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#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
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struct gpio_led balloon3_gpio_leds[] = {
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{
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.name = "balloon3:green:idle",
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.default_trigger = "heartbeat",
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.gpio = BALLOON3_GPIO_LED_IDLE,
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.active_low = 1,
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}, {
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.name = "balloon3:green:nand",
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.default_trigger = "nand-disk",
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.gpio = BALLOON3_GPIO_LED_NAND,
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.active_low = 1,
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},
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};
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static struct gpio_led_platform_data balloon3_gpio_led_info = {
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.leds = balloon3_gpio_leds,
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.num_leds = ARRAY_SIZE(balloon3_gpio_leds),
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};
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static struct platform_device balloon3_leds = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &balloon3_gpio_led_info,
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}
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};
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static void __init balloon3_leds_init(void)
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{
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platform_device_register(&balloon3_leds);
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}
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#else
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static inline void balloon3_leds_init(void) {}
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#endif
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/******************************************************************************
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* FPGA IRQ
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******************************************************************************/
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static void balloon3_mask_irq(unsigned int irq)
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{
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int balloon3_irq = (irq - BALLOON3_IRQ(0));
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balloon3_irq_enabled &= ~(1 << balloon3_irq);
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__raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
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}
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static void balloon3_unmask_irq(unsigned int irq)
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{
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int balloon3_irq = (irq - BALLOON3_IRQ(0));
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balloon3_irq_enabled |= (1 << balloon3_irq);
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__raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
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}
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static struct irq_chip balloon3_irq_chip = {
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.name = "FPGA",
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.ack = balloon3_mask_irq,
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.mask = balloon3_mask_irq,
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.unmask = balloon3_unmask_irq,
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};
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static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
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{
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unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
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balloon3_irq_enabled;
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do {
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/* clear useless edge notification */
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if (desc->chip->ack)
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desc->chip->ack(BALLOON3_AUX_NIRQ);
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while (pending) {
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irq = BALLOON3_IRQ(0) + __ffs(pending);
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generic_handle_irq(irq);
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pending &= pending - 1;
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}
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pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
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balloon3_irq_enabled;
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} while (pending);
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}
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static void __init balloon3_init_irq(void)
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{
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int irq;
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pxa27x_init_irq();
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/* setup extra Balloon3 irqs */
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for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
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set_irq_chip(irq, &balloon3_irq_chip);
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set_irq_handler(irq, handle_level_irq);
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set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
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}
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set_irq_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
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set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
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pr_debug("%s: chained handler installed - irq %d automatically "
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"enabled\n", __func__, BALLOON3_AUX_NIRQ);
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}
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/******************************************************************************
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* Machine init
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******************************************************************************/
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static void __init balloon3_init(void)
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{
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ARB_CNTRL = ARB_CORE_PARK | 0x234;
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pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
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pxa_set_ffuart_info(NULL);
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pxa_set_btuart_info(NULL);
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pxa_set_stuart_info(NULL);
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pxa_set_i2c_info(NULL);
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balloon3_irda_init();
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balloon3_lcd_init();
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balloon3_leds_init();
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balloon3_mmc_init();
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balloon3_nor_init();
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balloon3_ts_init();
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balloon3_udc_init();
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balloon3_uhc_init();
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}
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static struct map_desc balloon3_io_desc[] __initdata = {
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{ /* CPLD/FPGA */
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.virtual = BALLOON3_FPGA_VIRT,
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.pfn = __phys_to_pfn(BALLOON3_FPGA_PHYS),
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.length = BALLOON3_FPGA_LENGTH,
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.type = MT_DEVICE,
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},
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};
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static void __init balloon3_map_io(void)
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{
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pxa_map_io();
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iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
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}
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MACHINE_START(BALLOON3, "Balloon3")
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/* Maintainer: Nick Bane. */
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.phys_io = 0x40000000,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.map_io = balloon3_map_io,
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.init_irq = balloon3_init_irq,
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.timer = &pxa_timer,
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.init_machine = balloon3_init,
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.boot_params = PHYS_OFFSET + 0x100,
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MACHINE_END
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