| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * linux/arch/arm/mach-pxa/zylonite_pxa300.c |
| * |
| * PXA300/PXA310 specific support code for the |
| * PXA3xx Development Platform (aka Zylonite) |
| * |
| * Copyright (C) 2007 Marvell Internation Ltd. |
| * 2007-08-21: eric miao <eric.miao@marvell.com> |
| * initial version |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/i2c.h> |
| #include <linux/platform_data/i2c-pxa.h> |
| #include <linux/platform_data/pca953x.h> |
| #include <linux/gpio.h> |
| |
| #include "pxa300.h" |
| #include "devices.h" |
| #include "zylonite.h" |
| |
| #include "generic.h" |
| |
| /* PXA300/PXA310 common configurations */ |
| static mfp_cfg_t common_mfp_cfg[] __initdata = { |
| /* LCD */ |
| GPIO54_LCD_LDD_0, |
| GPIO55_LCD_LDD_1, |
| GPIO56_LCD_LDD_2, |
| GPIO57_LCD_LDD_3, |
| GPIO58_LCD_LDD_4, |
| GPIO59_LCD_LDD_5, |
| GPIO60_LCD_LDD_6, |
| GPIO61_LCD_LDD_7, |
| GPIO62_LCD_LDD_8, |
| GPIO63_LCD_LDD_9, |
| GPIO64_LCD_LDD_10, |
| GPIO65_LCD_LDD_11, |
| GPIO66_LCD_LDD_12, |
| GPIO67_LCD_LDD_13, |
| GPIO68_LCD_LDD_14, |
| GPIO69_LCD_LDD_15, |
| GPIO70_LCD_LDD_16, |
| GPIO71_LCD_LDD_17, |
| GPIO72_LCD_FCLK, |
| GPIO73_LCD_LCLK, |
| GPIO74_LCD_PCLK, |
| GPIO75_LCD_BIAS, |
| GPIO76_LCD_VSYNC, |
| GPIO127_LCD_CS_N, |
| GPIO20_PWM3_OUT, /* backlight */ |
| |
| /* BTUART */ |
| GPIO111_UART2_RTS, |
| GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL, |
| GPIO113_UART2_TXD, |
| GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH, |
| |
| /* STUART */ |
| GPIO109_UART3_TXD, |
| GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL, |
| |
| /* AC97 */ |
| GPIO23_AC97_nACRESET, |
| GPIO24_AC97_SYSCLK, |
| GPIO29_AC97_BITCLK, |
| GPIO25_AC97_SDATA_IN_0, |
| GPIO27_AC97_SDATA_OUT, |
| GPIO28_AC97_SYNC, |
| GPIO17_GPIO, /* SDATA_IN_1 but unused - configure to GPIO */ |
| |
| /* SSP3 */ |
| GPIO91_SSP3_SCLK, |
| GPIO92_SSP3_FRM, |
| GPIO93_SSP3_TXD, |
| GPIO94_SSP3_RXD, |
| |
| /* WM9713 IRQ */ |
| GPIO26_GPIO, |
| |
| /* Keypad */ |
| GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH, |
| GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH, |
| GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH, |
| GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH, |
| GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH, |
| GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH, |
| GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH, |
| GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH, |
| GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH, |
| GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH, |
| GPIO121_KP_MKOUT_0, |
| GPIO122_KP_MKOUT_1, |
| GPIO123_KP_MKOUT_2, |
| GPIO124_KP_MKOUT_3, |
| GPIO125_KP_MKOUT_4, |
| GPIO4_2_KP_MKOUT_5, |
| GPIO5_2_KP_MKOUT_6, |
| GPIO6_2_KP_MKOUT_7, |
| |
| /* MMC1 */ |
| GPIO3_MMC1_DAT0, |
| GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH, |
| GPIO5_MMC1_DAT2, |
| GPIO6_MMC1_DAT3, |
| GPIO7_MMC1_CLK, |
| GPIO8_MMC1_CMD, /* CMD0 for slot 0 */ |
| GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */ |
| |
| /* MMC2 */ |
| GPIO9_MMC2_DAT0, |
| GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH, |
| GPIO11_MMC2_DAT2, |
| GPIO12_MMC2_DAT3, |
| GPIO13_MMC2_CLK, |
| GPIO14_MMC2_CMD, |
| |
| /* USB Host */ |
| GPIO0_2_USBH_PEN, |
| GPIO1_2_USBH_PWR, |
| |
| /* Standard I2C */ |
| GPIO21_I2C_SCL, |
| GPIO22_I2C_SDA, |
| |
| /* GPIO */ |
| GPIO18_GPIO | MFP_PULL_HIGH, /* GPIO Expander #0 INT_N */ |
| GPIO19_GPIO | MFP_PULL_HIGH, /* GPIO Expander #1 INT_N */ |
| }; |
| |
| static mfp_cfg_t pxa300_mfp_cfg[] __initdata = { |
| /* FFUART */ |
| GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL, |
| GPIO31_UART1_TXD, |
| GPIO32_UART1_CTS, |
| GPIO37_UART1_RTS, |
| GPIO33_UART1_DCD, |
| GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL, |
| GPIO35_UART1_RI, |
| GPIO36_UART1_DTR, |
| |
| /* Ethernet */ |
| GPIO2_nCS3, |
| GPIO99_GPIO, |
| }; |
| |
| static mfp_cfg_t pxa310_mfp_cfg[] __initdata = { |
| /* FFUART */ |
| GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL, |
| GPIO100_UART1_TXD, |
| GPIO101_UART1_CTS, |
| GPIO106_UART1_RTS, |
| |
| /* Ethernet */ |
| GPIO2_nCS3, |
| GPIO102_GPIO, |
| |
| /* MMC3 */ |
| GPIO7_2_MMC3_DAT0, |
| GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH, |
| GPIO9_2_MMC3_DAT2, |
| GPIO10_2_MMC3_DAT3, |
| GPIO103_MMC3_CLK, |
| GPIO105_MMC3_CMD, |
| }; |
| |
| #define NUM_LCD_DETECT_PINS 7 |
| |
| static int lcd_detect_pins[] __initdata = { |
| MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */ |
| MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */ |
| MFP_PIN_GPIO75, /* LCD_BIAS - LCDID[4] */ |
| MFP_PIN_GPIO73, /* LCD_LCLK - LCDID[3] */ |
| MFP_PIN_GPIO72, /* LCD_FCLK - LCDID[2] */ |
| MFP_PIN_GPIO127,/* LCD_CS_N - LCDID[1] */ |
| MFP_PIN_GPIO76, /* LCD_VSYNC - LCDID[0] */ |
| }; |
| |
| static void __init zylonite_detect_lcd_panel(void) |
| { |
| unsigned long mfpr_save[NUM_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 < NUM_LCD_DETECT_PINS; i++) { |
| mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]); |
| pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440); |
| } |
| |
| for (i = 0; i < NUM_LCD_DETECT_PINS; i++) { |
| id = id << 1; |
| gpio = mfp_to_gpio(lcd_detect_pins[i]); |
| gpio_request(gpio, "LCD_ID_PINS"); |
| gpio_direction_input(gpio); |
| |
| if (gpio_get_value(gpio)) |
| id = id | 0x1; |
| gpio_free(gpio); |
| } |
| |
| /* 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 < NUM_LCD_DETECT_PINS; i++) |
| pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]); |
| } |
| |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| static struct pca953x_platform_data gpio_exp[] = { |
| [0] = { |
| .gpio_base = 128, |
| }, |
| [1] = { |
| .gpio_base = 144, |
| }, |
| }; |
| |
| static struct i2c_board_info zylonite_i2c_board_info[] = { |
| { |
| .type = "pca9539", |
| .dev_name = "pca9539-a", |
| .addr = 0x74, |
| .platform_data = &gpio_exp[0], |
| .irq = PXA_GPIO_TO_IRQ(18), |
| }, { |
| .type = "pca9539", |
| .dev_name = "pca9539-b", |
| .addr = 0x75, |
| .platform_data = &gpio_exp[1], |
| .irq = PXA_GPIO_TO_IRQ(19), |
| }, |
| }; |
| |
| static void __init zylonite_init_i2c(void) |
| { |
| pxa_set_i2c_info(NULL); |
| i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info)); |
| } |
| #else |
| static inline void zylonite_init_i2c(void) {} |
| #endif |
| |
| void __init zylonite_pxa300_init(void) |
| { |
| if (cpu_is_pxa300() || cpu_is_pxa310()) { |
| /* initialize MFP */ |
| pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg)); |
| |
| /* detect LCD panel */ |
| zylonite_detect_lcd_panel(); |
| |
| /* WM9713 IRQ */ |
| wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26); |
| |
| zylonite_init_i2c(); |
| } |
| |
| if (cpu_is_pxa300()) { |
| pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg)); |
| gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99); |
| } |
| |
| if (cpu_is_pxa310()) { |
| pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg)); |
| gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102); |
| } |
| |
| /* GPIOs for Debug LEDs */ |
| gpio_debug_led1 = EXT_GPIO(25); |
| gpio_debug_led2 = EXT_GPIO(26); |
| } |
