diff options
Diffstat (limited to 'kernel/arch/arm/mach-pxa/pcm990-baseboard.c')
| -rw-r--r-- | kernel/arch/arm/mach-pxa/pcm990-baseboard.c | 566 |
1 files changed, 566 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-pxa/pcm990-baseboard.c b/kernel/arch/arm/mach-pxa/pcm990-baseboard.c new file mode 100644 index 000000000..2897da2a5 --- /dev/null +++ b/kernel/arch/arm/mach-pxa/pcm990-baseboard.c @@ -0,0 +1,566 @@ +/* + * arch/arm/mach-pxa/pcm990-baseboard.c + * Support for the Phytec phyCORE-PXA270 Development Platform (PCM-990). + * + * Refer + * http://www.phytec.com/products/rdk/ARM-XScale/phyCORE-XScale-PXA270.html + * for additional hardware info + * + * Author: Juergen Kilb + * Created: April 05, 2005 + * Copyright: Phytec Messtechnik GmbH + * e-Mail: armlinux@phytec.de + * + * based on Intel Mainstone Board + * + * Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/gpio.h> +#include <linux/irq.h> +#include <linux/platform_device.h> +#include <linux/i2c.h> +#include <linux/i2c/pxa-i2c.h> +#include <linux/pwm_backlight.h> + +#include <media/mt9v022.h> +#include <media/soc_camera.h> + +#include <linux/platform_data/camera-pxa.h> +#include <asm/mach/map.h> +#include <mach/pxa27x.h> +#include <mach/audio.h> +#include <linux/platform_data/mmc-pxamci.h> +#include <linux/platform_data/usb-ohci-pxa27x.h> +#include <mach/pcm990_baseboard.h> +#include <linux/platform_data/video-pxafb.h> + +#include "devices.h" +#include "generic.h" + +static unsigned long pcm990_pin_config[] __initdata = { + /* MMC */ + GPIO32_MMC_CLK, + GPIO112_MMC_CMD, + GPIO92_MMC_DAT_0, + GPIO109_MMC_DAT_1, + GPIO110_MMC_DAT_2, + GPIO111_MMC_DAT_3, + /* USB */ + GPIO88_USBH1_PWR, + GPIO89_USBH1_PEN, + /* PWM0 */ + GPIO16_PWM0_OUT, + + /* I2C */ + GPIO117_I2C_SCL, + GPIO118_I2C_SDA, + + /* AC97 */ + GPIO28_AC97_BITCLK, + GPIO29_AC97_SDATA_IN_0, + GPIO30_AC97_SDATA_OUT, + GPIO31_AC97_SYNC, +}; + +static void __iomem *pcm990_cpld_base; + +static u8 pcm990_cpld_readb(unsigned int reg) +{ + return readb(pcm990_cpld_base + reg); +} + +static void pcm990_cpld_writeb(u8 value, unsigned int reg) +{ + writeb(value, pcm990_cpld_base + reg); +} + +/* + * pcm990_lcd_power - control power supply to the LCD + * @on: 0 = switch off, 1 = switch on + * + * Called by the pxafb driver + */ +#ifndef CONFIG_PCM990_DISPLAY_NONE +static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var) +{ + if (on) { + /* enable LCD-Latches + * power on LCD + */ + pcm990_cpld_writeb(PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON, + PCM990_CTRL_REG3); + } else { + /* disable LCD-Latches + * power off LCD + */ + pcm990_cpld_writeb(0, PCM990_CTRL_REG3); + } +} +#endif + +#if defined(CONFIG_PCM990_DISPLAY_SHARP) +static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = { + .pixclock = 28000, + .xres = 640, + .yres = 480, + .bpp = 16, + .hsync_len = 20, + .left_margin = 103, + .right_margin = 47, + .vsync_len = 6, + .upper_margin = 28, + .lower_margin = 5, + .sync = 0, + .cmap_greyscale = 0, +}; + +static struct pxafb_mach_info pcm990_fbinfo __initdata = { + .modes = &fb_info_sharp_lq084v1dg21, + .num_modes = 1, + .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL, + .pxafb_lcd_power = pcm990_lcd_power, +}; +#elif defined(CONFIG_PCM990_DISPLAY_NEC) +struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = { + .pixclock = 39720, + .xres = 640, + .yres = 480, + .bpp = 16, + .hsync_len = 32, + .left_margin = 16, + .right_margin = 48, + .vsync_len = 2, + .upper_margin = 12, + .lower_margin = 17, + .sync = 0, + .cmap_greyscale = 0, +}; + +static struct pxafb_mach_info pcm990_fbinfo __initdata = { + .modes = &fb_info_nec_nl6448bc20_18d, + .num_modes = 1, + .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL, + .pxafb_lcd_power = pcm990_lcd_power, +}; +#endif + +static struct platform_pwm_backlight_data pcm990_backlight_data = { + .pwm_id = 0, + .max_brightness = 1023, + .dft_brightness = 1023, + .pwm_period_ns = 78770, + .enable_gpio = -1, +}; + +static struct platform_device pcm990_backlight_device = { + .name = "pwm-backlight", + .dev = { + .parent = &pxa27x_device_pwm0.dev, + .platform_data = &pcm990_backlight_data, + }, +}; + +/* + * The PCM-990 development baseboard uses PCM-027's hardware in the + * following way: + * + * - LCD support is in use + * - GPIO16 is output for back light on/off with PWM + * - GPIO58 ... GPIO73 are outputs for display data + * - GPIO74 is output output for LCDFCLK + * - GPIO75 is output for LCDLCLK + * - GPIO76 is output for LCDPCLK + * - GPIO77 is output for LCDBIAS + * - MMC support is in use + * - GPIO32 is output for MMCCLK + * - GPIO92 is MMDAT0 + * - GPIO109 is MMDAT1 + * - GPIO110 is MMCS0 + * - GPIO111 is MMCS1 + * - GPIO112 is MMCMD + * - IDE/CF card is in use + * - GPIO48 is output /POE + * - GPIO49 is output /PWE + * - GPIO50 is output /PIOR + * - GPIO51 is output /PIOW + * - GPIO54 is output /PCE2 + * - GPIO55 is output /PREG + * - GPIO56 is input /PWAIT + * - GPIO57 is output /PIOS16 + * - GPIO79 is output PSKTSEL + * - GPIO85 is output /PCE1 + * - FFUART is in use + * - GPIO34 is input FFRXD + * - GPIO35 is input FFCTS + * - GPIO36 is input FFDCD + * - GPIO37 is input FFDSR + * - GPIO38 is input FFRI + * - GPIO39 is output FFTXD + * - GPIO40 is output FFDTR + * - GPIO41 is output FFRTS + * - BTUART is in use + * - GPIO42 is input BTRXD + * - GPIO43 is output BTTXD + * - GPIO44 is input BTCTS + * - GPIO45 is output BTRTS + * - IRUART is in use + * - GPIO46 is input STDRXD + * - GPIO47 is output STDTXD + * - AC97 is in use*) + * - GPIO28 is input AC97CLK + * - GPIO29 is input AC97DatIn + * - GPIO30 is output AC97DatO + * - GPIO31 is output AC97SYNC + * - GPIO113 is output AC97_RESET + * - SSP is in use + * - GPIO23 is output SSPSCLK + * - GPIO24 is output chip select to Max7301 + * - GPIO25 is output SSPTXD + * - GPIO26 is input SSPRXD + * - GPIO27 is input for Max7301 IRQ + * - GPIO53 is input SSPSYSCLK + * - SSP3 is in use + * - GPIO81 is output SSPTXD3 + * - GPIO82 is input SSPRXD3 + * - GPIO83 is output SSPSFRM + * - GPIO84 is output SSPCLK3 + * + * Otherwise claimed GPIOs: + * GPIO1 -> IRQ from user switch + * GPIO9 -> IRQ from power management + * GPIO10 -> IRQ from WML9712 AC97 controller + * GPIO11 -> IRQ from IDE controller + * GPIO12 -> IRQ from CF controller + * GPIO13 -> IRQ from CF controller + * GPIO14 -> GPIO free + * GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path) + * GPIO19 -> GPIO free + * GPIO20 -> /SDCS2 + * GPIO21 -> /CS3 PC card socket select + * GPIO33 -> /CS5 network controller select + * GPIO78 -> /CS2 (16 bit wide data path) + * GPIO80 -> /CS4 (16 bit wide data path) + * GPIO86 -> GPIO free + * GPIO87 -> GPIO free + * GPIO90 -> LED0 on CPU module + * GPIO91 -> LED1 on CPI module + * GPIO117 -> SCL + * GPIO118 -> SDA + */ + +static unsigned long pcm990_irq_enabled; + +static void pcm990_mask_ack_irq(struct irq_data *d) +{ + int pcm990_irq = (d->irq - PCM027_IRQ(0)); + + pcm990_irq_enabled &= ~(1 << pcm990_irq); + + pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA); +} + +static void pcm990_unmask_irq(struct irq_data *d) +{ + int pcm990_irq = (d->irq - PCM027_IRQ(0)); + u8 val; + + /* the irq can be acknowledged only if deasserted, so it's done here */ + + pcm990_irq_enabled |= (1 << pcm990_irq); + + val = pcm990_cpld_readb(PCM990_CTRL_INTSETCLR); + val |= 1 << pcm990_irq; + pcm990_cpld_writeb(val, PCM990_CTRL_INTSETCLR); + + pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA); +} + +static struct irq_chip pcm990_irq_chip = { + .irq_mask_ack = pcm990_mask_ack_irq, + .irq_unmask = pcm990_unmask_irq, +}; + +static void pcm990_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + unsigned long pending; + + pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR); + pending &= pcm990_irq_enabled; + + do { + /* clear our parent IRQ */ + desc->irq_data.chip->irq_ack(&desc->irq_data); + if (likely(pending)) { + irq = PCM027_IRQ(0) + __ffs(pending); + generic_handle_irq(irq); + } + pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR); + pending &= pcm990_irq_enabled; + } while (pending); +} + +static void __init pcm990_init_irq(void) +{ + int irq; + + /* setup extra PCM990 irqs */ + for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) { + irq_set_chip_and_handler(irq, &pcm990_irq_chip, + handle_level_irq); + set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + } + + /* disable all Interrupts */ + pcm990_cpld_writeb(0x0, PCM990_CTRL_INTMSKENA); + pcm990_cpld_writeb(0xff, PCM990_CTRL_INTSETCLR); + + irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler); + irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE); +} + +static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int, + void *data) +{ + int err; + + err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, 0, + "MMC card detect", data); + if (err) + printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC " + "card detect IRQ\n"); + + return err; +} + +static int pcm990_mci_setpower(struct device *dev, unsigned int vdd) +{ + struct pxamci_platform_data *p_d = dev->platform_data; + u8 val; + + val = pcm990_cpld_readb(PCM990_CTRL_REG5); + + if ((1 << vdd) & p_d->ocr_mask) + val |= PCM990_CTRL_MMC2PWR; + else + val &= ~PCM990_CTRL_MMC2PWR; + + pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5); + return 0; +} + +static void pcm990_mci_exit(struct device *dev, void *data) +{ + free_irq(PCM027_MMCDET_IRQ, data); +} + +#define MSECS_PER_JIFFY (1000/HZ) + +static struct pxamci_platform_data pcm990_mci_platform_data = { + .detect_delay_ms = 250, + .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, + .init = pcm990_mci_init, + .setpower = pcm990_mci_setpower, + .exit = pcm990_mci_exit, + .gpio_card_detect = -1, + .gpio_card_ro = -1, + .gpio_power = -1, +}; + +static struct pxaohci_platform_data pcm990_ohci_platform_data = { + .port_mode = PMM_PERPORT_MODE, + .flags = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW, + .power_on_delay = 10, +}; + +/* + * PXA27x Camera specific stuff + */ +#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE) +static unsigned long pcm990_camera_pin_config[] = { + /* CIF */ + GPIO98_CIF_DD_0, + GPIO105_CIF_DD_1, + GPIO104_CIF_DD_2, + GPIO103_CIF_DD_3, + GPIO95_CIF_DD_4, + GPIO94_CIF_DD_5, + GPIO93_CIF_DD_6, + GPIO108_CIF_DD_7, + GPIO107_CIF_DD_8, + GPIO106_CIF_DD_9, + GPIO42_CIF_MCLK, + GPIO45_CIF_PCLK, + GPIO43_CIF_FV, + GPIO44_CIF_LV, +}; + +/* + * CICR4: PCLK_EN: Pixel clock is supplied by the sensor + * MCLK_EN: Master clock is generated by PXA + * PCP: Data sampled on the falling edge of pixel clock + */ +struct pxacamera_platform_data pcm990_pxacamera_platform_data = { + .flags = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 | + PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/, + .mclk_10khz = 1000, +}; + +#include <linux/platform_data/pca953x.h> + +static struct pca953x_platform_data pca9536_data = { + .gpio_base = PXA_NR_BUILTIN_GPIO, +}; + +static int gpio_bus_switch = -EINVAL; + +static int pcm990_camera_set_bus_param(struct soc_camera_link *link, + unsigned long flags) +{ + if (gpio_bus_switch < 0) { + if (flags == SOCAM_DATAWIDTH_10) + return 0; + else + return -EINVAL; + } + + if (flags & SOCAM_DATAWIDTH_8) + gpio_set_value_cansleep(gpio_bus_switch, 1); + else + gpio_set_value_cansleep(gpio_bus_switch, 0); + + return 0; +} + +static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link) +{ + int ret; + + if (gpio_bus_switch < 0) { + ret = gpio_request(PXA_NR_BUILTIN_GPIO, "camera"); + if (!ret) { + gpio_bus_switch = PXA_NR_BUILTIN_GPIO; + gpio_direction_output(gpio_bus_switch, 0); + } + } + + if (gpio_bus_switch >= 0) + return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10; + else + return SOCAM_DATAWIDTH_10; +} + +static void pcm990_camera_free_bus(struct soc_camera_link *link) +{ + if (gpio_bus_switch < 0) + return; + + gpio_free(gpio_bus_switch); + gpio_bus_switch = -EINVAL; +} + +/* Board I2C devices. */ +static struct i2c_board_info __initdata pcm990_i2c_devices[] = { + { + /* Must initialize before the camera(s) */ + I2C_BOARD_INFO("pca9536", 0x41), + .platform_data = &pca9536_data, + }, +}; + +static struct mt9v022_platform_data mt9v022_pdata = { + .y_skip_top = 1, +}; + +static struct i2c_board_info pcm990_camera_i2c[] = { + { + I2C_BOARD_INFO("mt9v022", 0x48), + }, { + I2C_BOARD_INFO("mt9m001", 0x5d), + }, +}; + +static struct soc_camera_link iclink[] = { + { + .bus_id = 0, /* Must match with the camera ID */ + .board_info = &pcm990_camera_i2c[0], + .priv = &mt9v022_pdata, + .i2c_adapter_id = 0, + .query_bus_param = pcm990_camera_query_bus_param, + .set_bus_param = pcm990_camera_set_bus_param, + .free_bus = pcm990_camera_free_bus, + }, { + .bus_id = 0, /* Must match with the camera ID */ + .board_info = &pcm990_camera_i2c[1], + .i2c_adapter_id = 0, + .query_bus_param = pcm990_camera_query_bus_param, + .set_bus_param = pcm990_camera_set_bus_param, + .free_bus = pcm990_camera_free_bus, + }, +}; + +static struct platform_device pcm990_camera[] = { + { + .name = "soc-camera-pdrv", + .id = 0, + .dev = { + .platform_data = &iclink[0], + }, + }, { + .name = "soc-camera-pdrv", + .id = 1, + .dev = { + .platform_data = &iclink[1], + }, + }, +}; +#endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */ + +/* + * system init for baseboard usage. Will be called by pcm027 init. + * + * Add platform devices present on this baseboard and init + * them from CPU side as far as required to use them later on + */ +void __init pcm990_baseboard_init(void) +{ + pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config)); + + pcm990_cpld_base = ioremap(PCM990_CTRL_PHYS, PCM990_CTRL_SIZE); + if (!pcm990_cpld_base) { + pr_err("pcm990: failed to ioremap cpld\n"); + return; + } + + /* register CPLD's IRQ controller */ + pcm990_init_irq(); + +#ifndef CONFIG_PCM990_DISPLAY_NONE + pxa_set_fb_info(NULL, &pcm990_fbinfo); +#endif + platform_device_register(&pcm990_backlight_device); + + /* MMC */ + pxa_set_mci_info(&pcm990_mci_platform_data); + + /* USB host */ + pxa_set_ohci_info(&pcm990_ohci_platform_data); + + pxa_set_i2c_info(NULL); + pxa_set_ac97_info(NULL); + +#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE) + pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config)); + pxa_set_camera_info(&pcm990_pxacamera_platform_data); + + i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices)); + + platform_device_register(&pcm990_camera[0]); + platform_device_register(&pcm990_camera[1]); +#endif + + printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n"); +} |