638 строки
14 KiB
C
638 строки
14 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* linux/arch/arm/mach-pxa/lubbock.c
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*
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* Support for the Intel DBPXA250 Development Platform.
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*
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* Author: Nicolas Pitre
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* Created: Jun 15, 2001
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* Copyright: MontaVista Software Inc.
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*/
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#include <linux/clkdev.h>
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#include <linux/gpio.h>
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#include <linux/gpio/gpio-reg.h>
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#include <linux/gpio/machine.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/syscore_ops.h>
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#include <linux/major.h>
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#include <linux/fb.h>
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#include <linux/interrupt.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/smc91x.h>
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#include <linux/slab.h>
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#include <linux/leds.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <linux/spi/pxa2xx_spi.h>
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#include <asm/setup.h>
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#include <asm/memory.h>
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#include <asm/mach-types.h>
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#include <mach/hardware.h>
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#include <asm/irq.h>
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#include <linux/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 <asm/hardware/sa1111.h>
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#include "pxa25x.h"
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#include <mach/audio.h>
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#include <mach/lubbock.h>
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#include "udc.h"
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#include <linux/platform_data/irda-pxaficp.h>
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#include <linux/platform_data/video-pxafb.h>
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#include <linux/platform_data/mmc-pxamci.h>
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#include "pm.h"
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#include <mach/smemc.h>
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#include "generic.h"
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#include "devices.h"
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static unsigned long lubbock_pin_config[] __initdata = {
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GPIO15_nCS_1, /* CS1 - Flash */
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GPIO78_nCS_2, /* CS2 - Baseboard FGPA */
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GPIO79_nCS_3, /* CS3 - SMC ethernet */
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GPIO80_nCS_4, /* CS4 - SA1111 */
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/* SSP data pins */
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GPIO23_SSP1_SCLK,
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GPIO25_SSP1_TXD,
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GPIO26_SSP1_RXD,
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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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/* LCD - 16bpp DSTN */
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GPIOxx_LCD_DSTN_16BPP,
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/* BTUART */
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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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/* 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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GPIO52_nPCE_1,
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GPIO53_nPCE_2,
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GPIO54_nPSKTSEL,
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GPIO55_nPREG,
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GPIO56_nPWAIT,
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GPIO57_nIOIS16,
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/* MMC */
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GPIO6_MMC_CLK,
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GPIO8_MMC_CS0,
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/* SA1111 chip */
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GPIO11_3_6MHz,
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/* wakeup */
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GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
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};
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#define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
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void lubbock_set_hexled(uint32_t value)
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{
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LUB_HEXLED = value;
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}
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static struct gpio_chip *lubbock_misc_wr_gc;
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static void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
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{
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unsigned long m = mask, v = set;
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lubbock_misc_wr_gc->set_multiple(lubbock_misc_wr_gc, &m, &v);
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}
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static int lubbock_udc_is_connected(void)
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{
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return (LUB_MISC_RD & (1 << 9)) == 0;
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}
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static struct pxa2xx_udc_mach_info udc_info __initdata = {
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.udc_is_connected = lubbock_udc_is_connected,
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// no D+ pullup; lubbock can't connect/disconnect in software
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};
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/* GPIOs for SA1111 PCMCIA */
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static struct gpiod_lookup_table sa1111_pcmcia_gpio_table = {
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.dev_id = "1800",
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.table = {
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{ "sa1111", 0, "a0vpp", GPIO_ACTIVE_HIGH },
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{ "sa1111", 1, "a1vpp", GPIO_ACTIVE_HIGH },
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{ "sa1111", 2, "a0vcc", GPIO_ACTIVE_HIGH },
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{ "sa1111", 3, "a1vcc", GPIO_ACTIVE_HIGH },
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{ "lubbock", 14, "b0vcc", GPIO_ACTIVE_HIGH },
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{ "lubbock", 15, "b1vcc", GPIO_ACTIVE_HIGH },
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{ },
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},
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};
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static void lubbock_init_pcmcia(void)
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{
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struct clk *clk;
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gpiod_add_lookup_table(&sa1111_pcmcia_gpio_table);
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/* Add an alias for the SA1111 PCMCIA clock */
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clk = clk_get_sys("pxa2xx-pcmcia", NULL);
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if (!IS_ERR(clk)) {
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clkdev_create(clk, NULL, "1800");
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clk_put(clk);
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}
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}
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static struct resource sa1111_resources[] = {
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[0] = {
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.start = 0x10000000,
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.end = 0x10001fff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = LUBBOCK_SA1111_IRQ,
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.end = LUBBOCK_SA1111_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct sa1111_platform_data sa1111_info = {
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.irq_base = LUBBOCK_SA1111_IRQ_BASE,
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.disable_devs = SA1111_DEVID_SAC,
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};
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static struct platform_device sa1111_device = {
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.name = "sa1111",
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.id = -1,
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.num_resources = ARRAY_SIZE(sa1111_resources),
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.resource = sa1111_resources,
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.dev = {
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.platform_data = &sa1111_info,
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},
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};
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/* ADS7846 is connected through SSP ... and if your board has J5 populated,
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* you can select it to replace the ucb1400 by switching the touchscreen cable
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* (to J5) and poking board registers (as done below). Else it's only useful
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* for the temperature sensors.
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*/
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static struct pxa2xx_spi_controller pxa_ssp_master_info = {
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.num_chipselect = 1,
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};
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static int lubbock_ads7846_pendown_state(void)
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{
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/* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
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return 0;
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}
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static struct ads7846_platform_data ads_info = {
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.model = 7846,
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.vref_delay_usecs = 100, /* internal, no cap */
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.get_pendown_state = lubbock_ads7846_pendown_state,
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// .x_plate_ohms = 500, /* GUESS! */
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// .y_plate_ohms = 500, /* GUESS! */
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};
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static void ads7846_cs(u32 command)
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{
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static const unsigned TS_nCS = 1 << 11;
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lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
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}
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static struct pxa2xx_spi_chip ads_hw = {
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.tx_threshold = 1,
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.rx_threshold = 2,
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.cs_control = ads7846_cs,
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};
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static struct spi_board_info spi_board_info[] __initdata = { {
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.modalias = "ads7846",
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.platform_data = &ads_info,
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.controller_data = &ads_hw,
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.irq = LUBBOCK_BB_IRQ,
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.max_speed_hz = 120000 /* max sample rate at 3V */
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* 26 /* command + data + overhead */,
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.bus_num = 1,
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.chip_select = 0,
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},
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};
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static struct resource smc91x_resources[] = {
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[0] = {
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.name = "smc91x-regs",
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.start = 0x0c000c00,
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.end = 0x0c0fffff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = LUBBOCK_ETH_IRQ,
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.end = LUBBOCK_ETH_IRQ,
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.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
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},
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[2] = {
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.name = "smc91x-attrib",
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.start = 0x0e000000,
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.end = 0x0e0fffff,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct smc91x_platdata lubbock_smc91x_info = {
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.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
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};
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static struct platform_device smc91x_device = {
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.name = "smc91x",
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.id = -1,
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.num_resources = ARRAY_SIZE(smc91x_resources),
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.resource = smc91x_resources,
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.dev = {
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.platform_data = &lubbock_smc91x_info,
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},
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};
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static struct resource flash_resources[] = {
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[0] = {
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.start = 0x00000000,
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.end = SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 0x04000000,
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.end = 0x04000000 + SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct mtd_partition lubbock_partitions[] = {
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{
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.name = "Bootloader",
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.size = 0x00040000,
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.offset = 0,
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.mask_flags = MTD_WRITEABLE /* force read-only */
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},{
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.name = "Kernel",
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.size = 0x00100000,
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.offset = 0x00040000,
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},{
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.name = "Filesystem",
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.size = MTDPART_SIZ_FULL,
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.offset = 0x00140000
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}
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};
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static struct flash_platform_data lubbock_flash_data[2] = {
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{
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.map_name = "cfi_probe",
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.parts = lubbock_partitions,
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.nr_parts = ARRAY_SIZE(lubbock_partitions),
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}, {
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.map_name = "cfi_probe",
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.parts = NULL,
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.nr_parts = 0,
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}
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};
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static struct platform_device lubbock_flash_device[2] = {
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{
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.name = "pxa2xx-flash",
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.id = 0,
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.dev = {
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.platform_data = &lubbock_flash_data[0],
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},
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.resource = &flash_resources[0],
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.num_resources = 1,
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},
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{
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.name = "pxa2xx-flash",
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.id = 1,
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.dev = {
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.platform_data = &lubbock_flash_data[1],
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},
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.resource = &flash_resources[1],
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.num_resources = 1,
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},
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};
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static struct resource lubbock_cplds_resources[] = {
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[0] = {
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.start = LUBBOCK_FPGA_PHYS + 0xc0,
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.end = LUBBOCK_FPGA_PHYS + 0xe0 - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = PXA_GPIO_TO_IRQ(0),
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.end = PXA_GPIO_TO_IRQ(0),
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.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
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},
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[2] = {
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.start = LUBBOCK_IRQ(0),
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.end = LUBBOCK_IRQ(6),
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device lubbock_cplds_device = {
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.name = "pxa_cplds_irqs",
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.id = -1,
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.resource = &lubbock_cplds_resources[0],
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.num_resources = 3,
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};
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static struct platform_device *devices[] __initdata = {
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&sa1111_device,
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&smc91x_device,
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&lubbock_flash_device[0],
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&lubbock_flash_device[1],
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&lubbock_cplds_device,
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};
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static struct pxafb_mode_info sharp_lm8v31_mode = {
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.pixclock = 270000,
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.xres = 640,
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.yres = 480,
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.bpp = 16,
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.hsync_len = 1,
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.left_margin = 3,
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.right_margin = 3,
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.vsync_len = 1,
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.upper_margin = 0,
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.lower_margin = 0,
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.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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.cmap_greyscale = 0,
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};
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static struct pxafb_mach_info sharp_lm8v31 = {
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.modes = &sharp_lm8v31_mode,
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.num_modes = 1,
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.cmap_inverse = 0,
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.cmap_static = 0,
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.lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
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LCD_AC_BIAS_FREQ(255),
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};
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#define MMC_POLL_RATE msecs_to_jiffies(1000)
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static irq_handler_t mmc_detect_int;
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static void *mmc_detect_int_data;
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static struct timer_list mmc_timer;
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static void lubbock_mmc_poll(struct timer_list *unused)
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{
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unsigned long flags;
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/* clear any previous irq state, then ... */
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local_irq_save(flags);
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LUB_IRQ_SET_CLR &= ~(1 << 0);
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local_irq_restore(flags);
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/* poll until mmc/sd card is removed */
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if (LUB_IRQ_SET_CLR & (1 << 0))
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mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
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else {
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(void) mmc_detect_int(LUBBOCK_SD_IRQ, mmc_detect_int_data);
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enable_irq(LUBBOCK_SD_IRQ);
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}
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}
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static irqreturn_t lubbock_detect_int(int irq, void *data)
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{
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/* IRQ is level triggered; disable, and poll for removal */
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disable_irq(irq);
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mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
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return mmc_detect_int(irq, data);
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}
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static int lubbock_mci_init(struct device *dev,
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irq_handler_t detect_int,
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void *data)
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{
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/* detect card insert/eject */
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mmc_detect_int = detect_int;
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mmc_detect_int_data = data;
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timer_setup(&mmc_timer, lubbock_mmc_poll, 0);
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return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
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0, "lubbock-sd-detect", data);
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}
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static int lubbock_mci_get_ro(struct device *dev)
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{
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return (LUB_MISC_RD & (1 << 2)) != 0;
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}
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static void lubbock_mci_exit(struct device *dev, void *data)
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{
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free_irq(LUBBOCK_SD_IRQ, data);
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del_timer_sync(&mmc_timer);
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}
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static struct pxamci_platform_data lubbock_mci_platform_data = {
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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.detect_delay_ms = 10,
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.init = lubbock_mci_init,
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.get_ro = lubbock_mci_get_ro,
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.exit = lubbock_mci_exit,
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};
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static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
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{
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unsigned long flags;
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local_irq_save(flags);
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if (mode & IR_SIRMODE) {
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lubbock_set_misc_wr(BIT(4), 0);
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} else if (mode & IR_FIRMODE) {
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lubbock_set_misc_wr(BIT(4), BIT(4));
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}
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pxa2xx_transceiver_mode(dev, mode);
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local_irq_restore(flags);
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}
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static struct pxaficp_platform_data lubbock_ficp_platform_data = {
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.gpio_pwdown = -1,
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.transceiver_cap = IR_SIRMODE | IR_FIRMODE,
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.transceiver_mode = lubbock_irda_transceiver_mode,
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};
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static void __init lubbock_init(void)
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{
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int flashboot = (LUB_CONF_SWITCHES & 1);
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pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
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lubbock_misc_wr_gc = gpio_reg_init(NULL, (void *)&LUB_MISC_WR,
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-1, 16, "lubbock", 0, LUB_MISC_WR,
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NULL, NULL, NULL);
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if (IS_ERR(lubbock_misc_wr_gc)) {
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pr_err("Lubbock: unable to register lubbock GPIOs: %ld\n",
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PTR_ERR(lubbock_misc_wr_gc));
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lubbock_misc_wr_gc = NULL;
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}
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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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lubbock_init_pcmcia();
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clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
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pxa_set_udc_info(&udc_info);
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pxa_set_fb_info(NULL, &sharp_lm8v31);
|
|
pxa_set_mci_info(&lubbock_mci_platform_data);
|
|
pxa_set_ficp_info(&lubbock_ficp_platform_data);
|
|
pxa_set_ac97_info(NULL);
|
|
|
|
lubbock_flash_data[0].width = lubbock_flash_data[1].width =
|
|
(__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
|
|
/* Compensate for the nROMBT switch which swaps the flash banks */
|
|
printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
|
|
flashboot?"Flash":"ROM", flashboot);
|
|
|
|
lubbock_flash_data[flashboot^1].name = "application-flash";
|
|
lubbock_flash_data[flashboot].name = "boot-rom";
|
|
(void) platform_add_devices(devices, ARRAY_SIZE(devices));
|
|
|
|
pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
|
|
spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
|
|
}
|
|
|
|
static struct map_desc lubbock_io_desc[] __initdata = {
|
|
{ /* CPLD */
|
|
.virtual = LUBBOCK_FPGA_VIRT,
|
|
.pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
|
|
.length = 0x00100000,
|
|
.type = MT_DEVICE
|
|
}
|
|
};
|
|
|
|
static void __init lubbock_map_io(void)
|
|
{
|
|
pxa25x_map_io();
|
|
iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
|
|
|
|
PCFR |= PCFR_OPDE;
|
|
}
|
|
|
|
/*
|
|
* Driver for the 8 discrete LEDs available for general use:
|
|
* Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
|
|
* so be sure to not monkey with them here.
|
|
*/
|
|
|
|
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
|
|
struct lubbock_led {
|
|
struct led_classdev cdev;
|
|
u8 mask;
|
|
};
|
|
|
|
/*
|
|
* The triggers lines up below will only be used if the
|
|
* LED triggers are compiled in.
|
|
*/
|
|
static const struct {
|
|
const char *name;
|
|
const char *trigger;
|
|
} lubbock_leds[] = {
|
|
{ "lubbock:D28", "default-on", },
|
|
{ "lubbock:D27", "cpu0", },
|
|
{ "lubbock:D26", "heartbeat" },
|
|
{ "lubbock:D25", },
|
|
{ "lubbock:D24", },
|
|
{ "lubbock:D23", },
|
|
{ "lubbock:D22", },
|
|
{ "lubbock:D21", },
|
|
};
|
|
|
|
static void lubbock_led_set(struct led_classdev *cdev,
|
|
enum led_brightness b)
|
|
{
|
|
struct lubbock_led *led = container_of(cdev,
|
|
struct lubbock_led, cdev);
|
|
u32 reg = LUB_DISC_BLNK_LED;
|
|
|
|
if (b != LED_OFF)
|
|
reg |= led->mask;
|
|
else
|
|
reg &= ~led->mask;
|
|
|
|
LUB_DISC_BLNK_LED = reg;
|
|
}
|
|
|
|
static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
|
|
{
|
|
struct lubbock_led *led = container_of(cdev,
|
|
struct lubbock_led, cdev);
|
|
u32 reg = LUB_DISC_BLNK_LED;
|
|
|
|
return (reg & led->mask) ? LED_FULL : LED_OFF;
|
|
}
|
|
|
|
static int __init lubbock_leds_init(void)
|
|
{
|
|
int i;
|
|
|
|
if (!machine_is_lubbock())
|
|
return -ENODEV;
|
|
|
|
/* All ON */
|
|
LUB_DISC_BLNK_LED |= 0xff;
|
|
for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
|
|
struct lubbock_led *led;
|
|
|
|
led = kzalloc(sizeof(*led), GFP_KERNEL);
|
|
if (!led)
|
|
break;
|
|
|
|
led->cdev.name = lubbock_leds[i].name;
|
|
led->cdev.brightness_set = lubbock_led_set;
|
|
led->cdev.brightness_get = lubbock_led_get;
|
|
led->cdev.default_trigger = lubbock_leds[i].trigger;
|
|
led->mask = BIT(i);
|
|
|
|
if (led_classdev_register(NULL, &led->cdev) < 0) {
|
|
kfree(led);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Since we may have triggers on any subsystem, defer registration
|
|
* until after subsystem_init.
|
|
*/
|
|
fs_initcall(lubbock_leds_init);
|
|
#endif
|
|
|
|
MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
|
|
/* Maintainer: MontaVista Software Inc. */
|
|
.map_io = lubbock_map_io,
|
|
.nr_irqs = LUBBOCK_NR_IRQS,
|
|
.init_irq = pxa25x_init_irq,
|
|
.handle_irq = pxa25x_handle_irq,
|
|
.init_time = pxa_timer_init,
|
|
.init_machine = lubbock_init,
|
|
.restart = pxa_restart,
|
|
MACHINE_END
|