diff options
Diffstat (limited to 'arch/arm/mach-pxa/zylonite_pxa320.c')
| -rw-r--r-- | arch/arm/mach-pxa/zylonite_pxa320.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/zylonite_pxa320.c b/arch/arm/mach-pxa/zylonite_pxa320.c new file mode 100644 index 00000000000..63cb36be086 --- /dev/null +++ b/arch/arm/mach-pxa/zylonite_pxa320.c @@ -0,0 +1,173 @@ +/* + * linux/arch/arm/mach-pxa/zylonite_pxa320.c + * + * PXA320 specific support code for the + * PXA3xx Development Platform (aka Zylonite) + * + * Copyright (C) 2007 Marvell Internation Ltd. + * 2007-08-21: eric miao <eric.y.miao@gmail.com> + * initial version + * + * 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/module.h> +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/arch/gpio.h> +#include <asm/arch/mfp-pxa320.h> +#include <asm/arch/zylonite.h> + +#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) + +static mfp_cfg_t mfp_cfg[] __initdata = { + /* LCD */ + GPIO6_2_LCD_LDD_0, + GPIO7_2_LCD_LDD_1, + GPIO8_2_LCD_LDD_2, + GPIO9_2_LCD_LDD_3, + GPIO10_2_LCD_LDD_4, + GPIO11_2_LCD_LDD_5, + GPIO12_2_LCD_LDD_6, + GPIO13_2_LCD_LDD_7, + GPIO63_LCD_LDD_8, + GPIO64_LCD_LDD_9, + GPIO65_LCD_LDD_10, + GPIO66_LCD_LDD_11, + GPIO67_LCD_LDD_12, + GPIO68_LCD_LDD_13, + GPIO69_LCD_LDD_14, + GPIO70_LCD_LDD_15, + GPIO71_LCD_LDD_16, + GPIO72_LCD_LDD_17, + GPIO73_LCD_CS_N, + GPIO74_LCD_VSYNC, + GPIO14_2_LCD_FCLK, + GPIO15_2_LCD_LCLK, + GPIO16_2_LCD_PCLK, + GPIO17_2_LCD_BIAS, + + /* FFUART */ + GPIO41_UART1_RXD, + GPIO42_UART1_TXD, + GPIO43_UART1_CTS, + GPIO44_UART1_DCD, + GPIO45_UART1_DSR, + GPIO46_UART1_RI, + GPIO47_UART1_DTR, + GPIO48_UART1_RTS, + + /* AC97 */ + GPIO34_AC97_SYSCLK, + GPIO35_AC97_SDATA_IN_0, + GPIO37_AC97_SDATA_OUT, + GPIO38_AC97_SYNC, + GPIO39_AC97_BITCLK, + GPIO40_AC97_nACRESET, + + /* I2C */ + GPIO32_I2C_SCL, + GPIO33_I2C_SDA, + + /* Keypad */ + GPIO105_KP_DKIN_0, + GPIO106_KP_DKIN_1, + GPIO113_KP_MKIN_0, + GPIO114_KP_MKIN_1, + GPIO115_KP_MKIN_2, + GPIO116_KP_MKIN_3, + GPIO117_KP_MKIN_4, + GPIO118_KP_MKIN_5, + GPIO119_KP_MKIN_6, + GPIO120_KP_MKIN_7, + GPIO121_KP_MKOUT_0, + GPIO122_KP_MKOUT_1, + GPIO123_KP_MKOUT_2, + GPIO124_KP_MKOUT_3, + GPIO125_KP_MKOUT_4, + GPIO126_KP_MKOUT_5, + GPIO127_KP_MKOUT_6, + GPIO5_2_KP_MKOUT_7, + + /* Ethernet */ + GPIO4_nCS3, + GPIO90_GPIO, +}; + +#define NUM_LCD_DETECT_PINS 7 + +static int lcd_detect_pins[] __initdata = { + MFP_PIN_GPIO72, /* LCD_LDD_17 - ORIENT */ + MFP_PIN_GPIO71, /* LCD_LDD_16 - LCDID[5] */ + MFP_PIN_GPIO17_2, /* LCD_BIAS - LCDID[4] */ + MFP_PIN_GPIO15_2, /* LCD_LCLK - LCDID[3] */ + MFP_PIN_GPIO14_2, /* LCD_FCLK - LCDID[2] */ + MFP_PIN_GPIO73, /* LCD_CS_N - LCDID[1] */ + MFP_PIN_GPIO74, /* LCD_VSYNC - LCDID[0] */ + /* + * set the MFP_PIN_GPIO 14/15/17 to alternate function other than + * GPIO to avoid input level confliction with 14_2, 15_2, 17_2 + */ + MFP_PIN_GPIO14, + MFP_PIN_GPIO15, + MFP_PIN_GPIO17, +}; + +static int lcd_detect_mfpr[] __initdata = { + /* AF0, DS 1X, Pull Neither, Edge Clear */ + 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, + 0xc442, /* Backlight, Pull-Up, AF2 */ + 0x8445, /* AF5 */ + 0x8445, /* AF5 */ +}; + +static void __init zylonite_detect_lcd_panel(void) +{ + unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)]; + int i, gpio, id = 0; + + /* save the original MFP settings of these pins and configure them + * as GPIO Input, DS01X, Pull Neither, Edge Clear + */ + for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) { + mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]); + pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]); + } + + for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { + id = id << 1; + gpio = mfp_to_gpio(lcd_detect_pins[i]); + gpio_direction_input(gpio); + + if (gpio_get_value(gpio)) + id = id | 0x1; + } + + /* lcd id, flush out bit 1 */ + lcd_id = id & 0x3d; + + /* lcd orientation, portrait or landscape */ + lcd_orientation = (id >> 6) & 0x1; + + /* restore the original MFP settings */ + for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) + pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]); +} + +void __init zylonite_pxa320_init(void) +{ + if (cpu_is_pxa320()) { + /* initialize MFP */ + pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg)); + + /* detect LCD panel */ + zylonite_detect_lcd_panel(); + + /* GPIO pin assignment */ + gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO14); + gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9); + } +} |