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-rw-r--r--arch/arm/mach-pxa/zylonite_pxa300.c281
1 files changed, 281 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/zylonite_pxa300.c b/arch/arm/mach-pxa/zylonite_pxa300.c
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+++ b/arch/arm/mach-pxa/zylonite_pxa300.c
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+// 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 <linux/soc/pxa/cpu.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);
+}