465 строки
12 KiB
C
465 строки
12 KiB
C
/*
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* arch/arm/mach-pxa/pcm990-baseboard.c
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* Support for the Phytec phyCORE-PXA270 Development Platform (PCM-990).
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*
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* Refer
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* http://www.phytec.com/products/rdk/ARM-XScale/phyCORE-XScale-PXA270.html
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* for additional hardware info
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*
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* Author: Juergen Kilb
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* Created: April 05, 2005
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* Copyright: Phytec Messtechnik GmbH
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* e-Mail: armlinux@phytec.de
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*
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* based on Intel Mainstone Board
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*
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* Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
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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/irq.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <linux/pwm_backlight.h>
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#include <media/soc_camera.h>
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#include <asm/gpio.h>
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#include <mach/i2c.h>
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#include <mach/camera.h>
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#include <asm/mach/map.h>
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#include <mach/pxa-regs.h>
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#include <mach/audio.h>
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#include <mach/mmc.h>
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#include <mach/ohci.h>
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#include <mach/pcm990_baseboard.h>
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#include <mach/pxafb.h>
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#include <mach/mfp-pxa27x.h>
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#include "devices.h"
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#include "generic.h"
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static unsigned long pcm990_pin_config[] __initdata = {
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/* MMC */
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GPIO32_MMC_CLK,
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GPIO112_MMC_CMD,
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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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/* USB */
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GPIO88_USBH1_PWR,
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GPIO89_USBH1_PEN,
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/* PWM0 */
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GPIO16_PWM0_OUT,
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/* I2C */
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GPIO117_I2C_SCL,
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GPIO118_I2C_SDA,
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};
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/*
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* pcm990_lcd_power - control power supply to the LCD
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* @on: 0 = switch off, 1 = switch on
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*
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* Called by the pxafb driver
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*/
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#ifndef CONFIG_PCM990_DISPLAY_NONE
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static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
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{
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if (on) {
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/* enable LCD-Latches
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* power on LCD
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*/
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__PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) =
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PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON;
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} else {
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/* disable LCD-Latches
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* power off LCD
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*/
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__PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00;
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}
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}
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#endif
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#if defined(CONFIG_PCM990_DISPLAY_SHARP)
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static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
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.pixclock = 28000,
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.xres = 640,
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.yres = 480,
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.bpp = 16,
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.hsync_len = 20,
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.left_margin = 103,
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.right_margin = 47,
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.vsync_len = 6,
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.upper_margin = 28,
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.lower_margin = 5,
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.sync = 0,
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.cmap_greyscale = 0,
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};
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static struct pxafb_mach_info pcm990_fbinfo __initdata = {
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.modes = &fb_info_sharp_lq084v1dg21,
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.num_modes = 1,
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.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
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.pxafb_lcd_power = pcm990_lcd_power,
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};
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#elif defined(CONFIG_PCM990_DISPLAY_NEC)
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struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
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.pixclock = 39720,
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.xres = 640,
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.yres = 480,
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.bpp = 16,
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.hsync_len = 32,
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.left_margin = 16,
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.right_margin = 48,
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.vsync_len = 2,
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.upper_margin = 12,
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.lower_margin = 17,
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.sync = 0,
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.cmap_greyscale = 0,
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};
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static struct pxafb_mach_info pcm990_fbinfo __initdata = {
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.modes = &fb_info_nec_nl6448bc20_18d,
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.num_modes = 1,
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.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
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.pxafb_lcd_power = pcm990_lcd_power,
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};
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#endif
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static struct platform_pwm_backlight_data pcm990_backlight_data = {
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.pwm_id = 0,
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.max_brightness = 1023,
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.dft_brightness = 1023,
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.pwm_period_ns = 78770,
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};
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static struct platform_device pcm990_backlight_device = {
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.name = "pwm-backlight",
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.dev = {
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.parent = &pxa27x_device_pwm0.dev,
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.platform_data = &pcm990_backlight_data,
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},
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};
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/*
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* The PCM-990 development baseboard uses PCM-027's hardware in the
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* following way:
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*
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* - LCD support is in use
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* - GPIO16 is output for back light on/off with PWM
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* - GPIO58 ... GPIO73 are outputs for display data
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* - GPIO74 is output output for LCDFCLK
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* - GPIO75 is output for LCDLCLK
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* - GPIO76 is output for LCDPCLK
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* - GPIO77 is output for LCDBIAS
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* - MMC support is in use
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* - GPIO32 is output for MMCCLK
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* - GPIO92 is MMDAT0
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* - GPIO109 is MMDAT1
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* - GPIO110 is MMCS0
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* - GPIO111 is MMCS1
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* - GPIO112 is MMCMD
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* - IDE/CF card is in use
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* - GPIO48 is output /POE
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* - GPIO49 is output /PWE
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* - GPIO50 is output /PIOR
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* - GPIO51 is output /PIOW
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* - GPIO54 is output /PCE2
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* - GPIO55 is output /PREG
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* - GPIO56 is input /PWAIT
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* - GPIO57 is output /PIOS16
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* - GPIO79 is output PSKTSEL
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* - GPIO85 is output /PCE1
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* - FFUART is in use
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* - GPIO34 is input FFRXD
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* - GPIO35 is input FFCTS
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* - GPIO36 is input FFDCD
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* - GPIO37 is input FFDSR
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* - GPIO38 is input FFRI
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* - GPIO39 is output FFTXD
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* - GPIO40 is output FFDTR
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* - GPIO41 is output FFRTS
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* - BTUART is in use
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* - GPIO42 is input BTRXD
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* - GPIO43 is output BTTXD
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* - GPIO44 is input BTCTS
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* - GPIO45 is output BTRTS
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* - IRUART is in use
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* - GPIO46 is input STDRXD
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* - GPIO47 is output STDTXD
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* - AC97 is in use*)
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* - GPIO28 is input AC97CLK
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* - GPIO29 is input AC97DatIn
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* - GPIO30 is output AC97DatO
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* - GPIO31 is output AC97SYNC
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* - GPIO113 is output AC97_RESET
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* - SSP is in use
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* - GPIO23 is output SSPSCLK
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* - GPIO24 is output chip select to Max7301
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* - GPIO25 is output SSPTXD
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* - GPIO26 is input SSPRXD
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* - GPIO27 is input for Max7301 IRQ
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* - GPIO53 is input SSPSYSCLK
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* - SSP3 is in use
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* - GPIO81 is output SSPTXD3
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* - GPIO82 is input SSPRXD3
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* - GPIO83 is output SSPSFRM
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* - GPIO84 is output SSPCLK3
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*
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* Otherwise claimed GPIOs:
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* GPIO1 -> IRQ from user switch
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* GPIO9 -> IRQ from power management
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* GPIO10 -> IRQ from WML9712 AC97 controller
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* GPIO11 -> IRQ from IDE controller
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* GPIO12 -> IRQ from CF controller
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* GPIO13 -> IRQ from CF controller
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* GPIO14 -> GPIO free
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* GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
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* GPIO19 -> GPIO free
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* GPIO20 -> /SDCS2
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* GPIO21 -> /CS3 PC card socket select
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* GPIO33 -> /CS5 network controller select
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* GPIO78 -> /CS2 (16 bit wide data path)
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* GPIO80 -> /CS4 (16 bit wide data path)
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* GPIO86 -> GPIO free
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* GPIO87 -> GPIO free
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* GPIO90 -> LED0 on CPU module
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* GPIO91 -> LED1 on CPI module
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* GPIO117 -> SCL
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* GPIO118 -> SDA
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*/
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static unsigned long pcm990_irq_enabled;
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static void pcm990_mask_ack_irq(unsigned int irq)
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{
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int pcm990_irq = (irq - PCM027_IRQ(0));
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PCM990_INTMSKENA = (pcm990_irq_enabled &= ~(1 << pcm990_irq));
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}
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static void pcm990_unmask_irq(unsigned int irq)
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{
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int pcm990_irq = (irq - PCM027_IRQ(0));
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/* the irq can be acknowledged only if deasserted, so it's done here */
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PCM990_INTSETCLR |= 1 << pcm990_irq;
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PCM990_INTMSKENA = (pcm990_irq_enabled |= (1 << pcm990_irq));
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}
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static struct irq_chip pcm990_irq_chip = {
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.mask_ack = pcm990_mask_ack_irq,
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.unmask = pcm990_unmask_irq,
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};
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static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc)
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{
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unsigned long pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
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do {
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GEDR(PCM990_CTRL_INT_IRQ_GPIO) =
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GPIO_bit(PCM990_CTRL_INT_IRQ_GPIO);
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if (likely(pending)) {
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irq = PCM027_IRQ(0) + __ffs(pending);
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generic_handle_irq(irq);
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}
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pending = (~PCM990_INTSETCLR) & pcm990_irq_enabled;
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} while (pending);
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}
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static void __init pcm990_init_irq(void)
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{
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int irq;
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/* setup extra PCM990 irqs */
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for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
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set_irq_chip(irq, &pcm990_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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PCM990_INTMSKENA = 0x00; /* disable all Interrupts */
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PCM990_INTSETCLR = 0xFF;
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set_irq_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
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set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
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}
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static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
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void *data)
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{
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int err;
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err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, IRQF_DISABLED,
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"MMC card detect", data);
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if (err)
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printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
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"card detect IRQ\n");
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return err;
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}
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static void pcm990_mci_setpower(struct device *dev, unsigned int vdd)
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{
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struct pxamci_platform_data *p_d = dev->platform_data;
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if ((1 << vdd) & p_d->ocr_mask)
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__PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
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PCM990_CTRL_MMC2PWR;
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else
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__PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG5) =
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~PCM990_CTRL_MMC2PWR;
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}
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static void pcm990_mci_exit(struct device *dev, void *data)
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{
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free_irq(PCM027_MMCDET_IRQ, data);
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}
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#define MSECS_PER_JIFFY (1000/HZ)
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static struct pxamci_platform_data pcm990_mci_platform_data = {
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.detect_delay = 250 / MSECS_PER_JIFFY,
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.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
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.init = pcm990_mci_init,
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.setpower = pcm990_mci_setpower,
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.exit = pcm990_mci_exit,
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};
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static struct pxaohci_platform_data pcm990_ohci_platform_data = {
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.port_mode = PMM_PERPORT_MODE,
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.flags = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
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.power_on_delay = 10,
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};
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/*
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* PXA27x Camera specific stuff
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*/
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#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
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static unsigned long pcm990_camera_pin_config[] = {
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/* CIF */
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GPIO98_CIF_DD_0,
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GPIO105_CIF_DD_1,
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GPIO104_CIF_DD_2,
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GPIO103_CIF_DD_3,
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GPIO95_CIF_DD_4,
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GPIO94_CIF_DD_5,
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GPIO93_CIF_DD_6,
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GPIO108_CIF_DD_7,
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GPIO107_CIF_DD_8,
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GPIO106_CIF_DD_9,
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GPIO42_CIF_MCLK,
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GPIO45_CIF_PCLK,
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GPIO43_CIF_FV,
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GPIO44_CIF_LV,
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};
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static int pcm990_pxacamera_init(struct device *dev)
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{
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pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
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return 0;
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}
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/*
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* CICR4: PCLK_EN: Pixel clock is supplied by the sensor
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* MCLK_EN: Master clock is generated by PXA
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* PCP: Data sampled on the falling edge of pixel clock
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*/
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struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
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.init = pcm990_pxacamera_init,
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.flags = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
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PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
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.mclk_10khz = 1000,
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};
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#include <linux/i2c/pca953x.h>
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static struct pca953x_platform_data pca9536_data = {
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.gpio_base = NR_BUILTIN_GPIO + 1,
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};
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static struct soc_camera_link iclink[] = {
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{
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.bus_id = 0, /* Must match with the camera ID above */
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.gpio = NR_BUILTIN_GPIO + 1,
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}, {
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.bus_id = 0, /* Must match with the camera ID above */
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.gpio = -ENXIO,
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}
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};
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/* Board I2C devices. */
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static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
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{
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/* Must initialize before the camera(s) */
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I2C_BOARD_INFO("pca9536", 0x41),
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.platform_data = &pca9536_data,
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}, {
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I2C_BOARD_INFO("mt9v022", 0x48),
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.platform_data = &iclink[0], /* With extender */
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}, {
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I2C_BOARD_INFO("mt9m001", 0x5d),
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.platform_data = &iclink[0], /* With extender */
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},
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};
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#endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
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/*
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* enable generic access to the base board control CPLDs U6 and U7
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*/
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static struct map_desc pcm990_io_desc[] __initdata = {
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{
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.virtual = PCM990_CTRL_BASE,
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.pfn = __phys_to_pfn(PCM990_CTRL_PHYS),
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.length = PCM990_CTRL_SIZE,
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.type = MT_DEVICE /* CPLD */
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}, {
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.virtual = PCM990_CF_PLD_BASE,
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.pfn = __phys_to_pfn(PCM990_CF_PLD_PHYS),
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.length = PCM990_CF_PLD_SIZE,
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.type = MT_DEVICE /* CPLD */
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}
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};
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/*
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* system init for baseboard usage. Will be called by pcm027 init.
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*
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* Add platform devices present on this baseboard and init
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* them from CPU side as far as required to use them later on
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*/
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void __init pcm990_baseboard_init(void)
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{
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pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
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/* register CPLD access */
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iotable_init(ARRAY_AND_SIZE(pcm990_io_desc));
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/* register CPLD's IRQ controller */
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pcm990_init_irq();
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#ifndef CONFIG_PCM990_DISPLAY_NONE
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set_pxa_fb_info(&pcm990_fbinfo);
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#endif
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platform_device_register(&pcm990_backlight_device);
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/* MMC */
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pxa_set_mci_info(&pcm990_mci_platform_data);
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/* USB host */
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pxa_set_ohci_info(&pcm990_ohci_platform_data);
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pxa_set_i2c_info(NULL);
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pxa_set_ac97_info(NULL);
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#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
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pxa_set_camera_info(&pcm990_pxacamera_platform_data);
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i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
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#endif
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printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
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}
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