Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 280 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-pxa/zylonite_pxa300.c b/kernel/arch/arm/mach-pxa/zylonite_pxa300.c
new file mode 100644
index 000000000..869bce7c3
--- /dev/null
+++ b/kernel/arch/arm/mach-pxa/zylonite_pxa300.c
@@ -0,0 +1,280 @@
+/*
+ * 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
+ *
+ * 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 <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
+#include <linux/platform_data/pca953x.h>
+#include <linux/gpio.h>
+
+#include <mach/pxa300.h>
+#include <mach/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",
+		.addr		= 0x74,
+		.platform_data	= &gpio_exp[0],
+		.irq		= PXA_GPIO_TO_IRQ(18),
+	}, {
+		.type		= "pca9539",
+		.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);
+}