// SPDX-License-Identifier: GPL-2.0-only /* * 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) */ #include #include #include #include #include #include #include #include #include "pxa27x.h" #include #include #include #include "pcm990_baseboard.h" #include #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 pwm_lookup pcm990_pwm_lookup[] = { PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.0", NULL, 78770, PWM_POLARITY_NORMAL), }; static struct platform_pwm_backlight_data pcm990_backlight_data = { .max_brightness = 1023, .dft_brightness = 1023, }; 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(struct irq_desc *desc) { unsigned int irq; 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); irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE); } /* 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, }; 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, }; /* * 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 pwm_add_table(pcm990_pwm_lookup, ARRAY_SIZE(pcm990_pwm_lookup)); 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); printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n"); }