[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 000000000000..63cb36be086b
--- /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);
+        }
+}