[ARM] pxa: PXA3xx base support

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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 0000000..63cb36b
--- /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);
+	}
+}