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637 lines
14 KiB
637 lines
14 KiB
// 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); |
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pxa_set_mci_info(&lubbock_mci_platform_data); |
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pxa_set_ficp_info(&lubbock_ficp_platform_data); |
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pxa_set_ac97_info(NULL); |
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lubbock_flash_data[0].width = lubbock_flash_data[1].width = |
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(__raw_readl(BOOT_DEF) & 1) ? 2 : 4; |
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/* Compensate for the nROMBT switch which swaps the flash banks */ |
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printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n", |
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flashboot?"Flash":"ROM", flashboot); |
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lubbock_flash_data[flashboot^1].name = "application-flash"; |
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lubbock_flash_data[flashboot].name = "boot-rom"; |
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(void) platform_add_devices(devices, ARRAY_SIZE(devices)); |
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pxa2xx_set_spi_info(1, &pxa_ssp_master_info); |
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spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); |
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} |
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static struct map_desc lubbock_io_desc[] __initdata = { |
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{ /* CPLD */ |
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.virtual = LUBBOCK_FPGA_VIRT, |
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.pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS), |
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.length = 0x00100000, |
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.type = MT_DEVICE |
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} |
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}; |
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static void __init lubbock_map_io(void) |
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{ |
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pxa25x_map_io(); |
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iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc)); |
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|
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PCFR |= PCFR_OPDE; |
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} |
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|
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/* |
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* Driver for the 8 discrete LEDs available for general use: |
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* Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays |
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* so be sure to not monkey with them here. |
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*/ |
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|
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#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) |
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struct lubbock_led { |
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struct led_classdev cdev; |
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u8 mask; |
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}; |
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|
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/* |
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* The triggers lines up below will only be used if the |
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* LED triggers are compiled in. |
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*/ |
|
static const struct { |
|
const char *name; |
|
const char *trigger; |
|
} lubbock_leds[] = { |
|
{ "lubbock:D28", "default-on", }, |
|
{ "lubbock:D27", "cpu0", }, |
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{ "lubbock:D26", "heartbeat" }, |
|
{ "lubbock:D25", }, |
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{ "lubbock:D24", }, |
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{ "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
|
|
|