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212 lines
4.9 KiB
212 lines
4.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/arch/arm/mach-pxa/zylonite_pxa320.c |
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* |
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* PXA320 specific support code for the |
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* PXA3xx Development Platform (aka Zylonite) |
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* |
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* Copyright (C) 2007 Marvell Internation Ltd. |
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* 2007-08-21: eric miao <[email protected]> |
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* initial version |
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*/ |
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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/gpio.h> |
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#include "pxa320.h" |
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#include "zylonite.h" |
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#include "generic.h" |
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static mfp_cfg_t mfp_cfg[] __initdata = { |
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/* LCD */ |
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GPIO6_2_LCD_LDD_0, |
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GPIO7_2_LCD_LDD_1, |
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GPIO8_2_LCD_LDD_2, |
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GPIO9_2_LCD_LDD_3, |
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GPIO10_2_LCD_LDD_4, |
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GPIO11_2_LCD_LDD_5, |
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GPIO12_2_LCD_LDD_6, |
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GPIO13_2_LCD_LDD_7, |
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GPIO63_LCD_LDD_8, |
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GPIO64_LCD_LDD_9, |
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GPIO65_LCD_LDD_10, |
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GPIO66_LCD_LDD_11, |
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GPIO67_LCD_LDD_12, |
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GPIO68_LCD_LDD_13, |
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GPIO69_LCD_LDD_14, |
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GPIO70_LCD_LDD_15, |
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GPIO71_LCD_LDD_16, |
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GPIO72_LCD_LDD_17, |
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GPIO73_LCD_CS_N, |
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GPIO74_LCD_VSYNC, |
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GPIO14_2_LCD_FCLK, |
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GPIO15_2_LCD_LCLK, |
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GPIO16_2_LCD_PCLK, |
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GPIO17_2_LCD_BIAS, |
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GPIO14_PWM3_OUT, /* backlight */ |
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/* FFUART */ |
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GPIO41_UART1_RXD | MFP_LPM_EDGE_FALL, |
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GPIO42_UART1_TXD, |
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GPIO43_UART1_CTS, |
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GPIO44_UART1_DCD, |
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GPIO45_UART1_DSR | MFP_LPM_EDGE_FALL, |
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GPIO46_UART1_RI, |
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GPIO47_UART1_DTR, |
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GPIO48_UART1_RTS, |
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/* AC97 */ |
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GPIO34_AC97_SYSCLK, |
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GPIO35_AC97_SDATA_IN_0, |
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GPIO37_AC97_SDATA_OUT, |
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GPIO38_AC97_SYNC, |
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GPIO39_AC97_BITCLK, |
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GPIO40_AC97_nACRESET, |
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GPIO36_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */ |
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/* SSP3 */ |
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GPIO89_SSP3_SCLK, |
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GPIO90_SSP3_FRM, |
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GPIO91_SSP3_TXD, |
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GPIO92_SSP3_RXD, |
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/* WM9713 IRQ */ |
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GPIO15_GPIO, |
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/* I2C */ |
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GPIO32_I2C_SCL, |
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GPIO33_I2C_SDA, |
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/* Keypad */ |
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GPIO105_KP_DKIN_0 | MFP_LPM_EDGE_BOTH, |
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GPIO106_KP_DKIN_1 | MFP_LPM_EDGE_BOTH, |
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GPIO113_KP_MKIN_0 | MFP_LPM_EDGE_BOTH, |
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GPIO114_KP_MKIN_1 | MFP_LPM_EDGE_BOTH, |
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GPIO115_KP_MKIN_2 | MFP_LPM_EDGE_BOTH, |
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GPIO116_KP_MKIN_3 | MFP_LPM_EDGE_BOTH, |
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GPIO117_KP_MKIN_4 | MFP_LPM_EDGE_BOTH, |
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GPIO118_KP_MKIN_5 | MFP_LPM_EDGE_BOTH, |
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GPIO119_KP_MKIN_6 | MFP_LPM_EDGE_BOTH, |
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GPIO120_KP_MKIN_7 | MFP_LPM_EDGE_BOTH, |
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GPIO121_KP_MKOUT_0, |
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GPIO122_KP_MKOUT_1, |
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GPIO123_KP_MKOUT_2, |
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GPIO124_KP_MKOUT_3, |
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GPIO125_KP_MKOUT_4, |
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GPIO126_KP_MKOUT_5, |
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GPIO127_KP_MKOUT_6, |
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GPIO5_2_KP_MKOUT_7, |
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/* Ethernet */ |
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GPIO4_nCS3, |
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GPIO90_GPIO, |
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/* MMC1 */ |
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GPIO18_MMC1_DAT0, |
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GPIO19_MMC1_DAT1 | MFP_LPM_EDGE_BOTH, |
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GPIO20_MMC1_DAT2, |
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GPIO21_MMC1_DAT3, |
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GPIO22_MMC1_CLK, |
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GPIO23_MMC1_CMD,/* CMD0 for slot 0 */ |
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GPIO31_GPIO, /* CMD1 default as GPIO for slot 0 */ |
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/* MMC2 */ |
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GPIO24_MMC2_DAT0, |
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GPIO25_MMC2_DAT1 | MFP_LPM_EDGE_BOTH, |
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GPIO26_MMC2_DAT2, |
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GPIO27_MMC2_DAT3, |
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GPIO28_MMC2_CLK, |
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GPIO29_MMC2_CMD, |
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/* USB Host */ |
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GPIO2_2_USBH_PEN, |
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GPIO3_2_USBH_PWR, |
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/* Debug LEDs */ |
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GPIO1_2_GPIO | MFP_LPM_DRIVE_HIGH, |
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GPIO4_2_GPIO | MFP_LPM_DRIVE_HIGH, |
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}; |
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#define NUM_LCD_DETECT_PINS 7 |
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static int lcd_detect_pins[] __initdata = { |
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MFP_PIN_GPIO72, /* LCD_LDD_17 - ORIENT */ |
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MFP_PIN_GPIO71, /* LCD_LDD_16 - LCDID[5] */ |
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MFP_PIN_GPIO17_2, /* LCD_BIAS - LCDID[4] */ |
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MFP_PIN_GPIO15_2, /* LCD_LCLK - LCDID[3] */ |
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MFP_PIN_GPIO14_2, /* LCD_FCLK - LCDID[2] */ |
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MFP_PIN_GPIO73, /* LCD_CS_N - LCDID[1] */ |
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MFP_PIN_GPIO74, /* LCD_VSYNC - LCDID[0] */ |
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/* |
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* set the MFP_PIN_GPIO 14/15/17 to alternate function other than |
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* GPIO to avoid input level confliction with 14_2, 15_2, 17_2 |
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*/ |
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MFP_PIN_GPIO14, |
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MFP_PIN_GPIO15, |
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MFP_PIN_GPIO17, |
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}; |
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static int lcd_detect_mfpr[] __initdata = { |
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/* AF0, DS 1X, Pull Neither, Edge Clear */ |
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0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, |
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0xc442, /* Backlight, Pull-Up, AF2 */ |
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0x8445, /* AF5 */ |
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0x8445, /* AF5 */ |
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}; |
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static void __init zylonite_detect_lcd_panel(void) |
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{ |
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unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)]; |
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int i, gpio, id = 0; |
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/* save the original MFP settings of these pins and configure them |
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* as GPIO Input, DS01X, Pull Neither, Edge Clear |
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*/ |
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for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) { |
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mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]); |
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pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]); |
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} |
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for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { |
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id = id << 1; |
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gpio = mfp_to_gpio(lcd_detect_pins[i]); |
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gpio_request(gpio, "LCD_ID_PINS"); |
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gpio_direction_input(gpio); |
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if (gpio_get_value(gpio)) |
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id = id | 0x1; |
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gpio_free(gpio); |
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} |
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/* lcd id, flush out bit 1 */ |
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lcd_id = id & 0x3d; |
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/* lcd orientation, portrait or landscape */ |
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lcd_orientation = (id >> 6) & 0x1; |
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/* restore the original MFP settings */ |
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for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) |
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pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]); |
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} |
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void __init zylonite_pxa320_init(void) |
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{ |
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if (cpu_is_pxa320()) { |
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/* initialize MFP */ |
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pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg)); |
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/* detect LCD panel */ |
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zylonite_detect_lcd_panel(); |
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/* GPIO pin assignment */ |
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gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9); |
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gpio_debug_led1 = mfp_to_gpio(MFP_PIN_GPIO1_2); |
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gpio_debug_led2 = mfp_to_gpio(MFP_PIN_GPIO4_2); |
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/* WM9713 IRQ */ |
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wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO15); |
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} |
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}
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