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, 571 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-omap2/board-overo.c b/kernel/arch/arm/mach-omap2/board-overo.c
new file mode 100644
index 000000000..2dae6ccd3
--- /dev/null
+++ b/kernel/arch/arm/mach-omap2/board-overo.c
@@ -0,0 +1,571 @@
+/*
+ * board-overo.c (Gumstix Overo)
+ *
+ * Initial code: Steve Sakoman <steve@sakoman.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/i2c/twl.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/fixed.h>
+#include <linux/spi/spi.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mmc/host.h>
+#include <linux/usb/phy.h>
+
+#include <linux/platform_data/mtd-nand-omap2.h>
+#include <linux/platform_data/spi-omap2-mcspi.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+#include <asm/mach/map.h>
+
+#include <video/omapdss.h>
+#include <video/omap-panel-data.h>
+
+#include "common.h"
+#include "mux.h"
+#include "sdram-micron-mt46h32m32lf-6.h"
+#include "gpmc.h"
+#include "hsmmc.h"
+#include "board-flash.h"
+#include "common-board-devices.h"
+
+#define	NAND_CS			0
+
+#define OVERO_GPIO_BT_XGATE	15
+#define OVERO_GPIO_W2W_NRESET	16
+#define OVERO_GPIO_PENDOWN	114
+#define OVERO_GPIO_BT_NRESET	164
+#define OVERO_GPIO_USBH_CPEN	168
+#define OVERO_GPIO_USBH_NRESET	183
+
+#define OVERO_SMSC911X_CS      5
+#define OVERO_SMSC911X_GPIO    176
+#define OVERO_SMSC911X_NRESET  64
+#define OVERO_SMSC911X2_CS     4
+#define OVERO_SMSC911X2_GPIO   65
+
+/* whether to register LCD35 instead of LCD43 */
+static bool overo_use_lcd35;
+
+#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
+	defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
+
+/* fixed regulator for ads7846 */
+static struct regulator_consumer_supply ads7846_supply[] = {
+	REGULATOR_SUPPLY("vcc", "spi1.0"),
+};
+
+static struct regulator_init_data vads7846_regulator = {
+	.constraints = {
+		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies	= ARRAY_SIZE(ads7846_supply),
+	.consumer_supplies	= ads7846_supply,
+};
+
+static struct fixed_voltage_config vads7846 = {
+	.supply_name		= "vads7846",
+	.microvolts		= 3300000, /* 3.3V */
+	.gpio			= -EINVAL,
+	.startup_delay		= 0,
+	.init_data		= &vads7846_regulator,
+};
+
+static struct platform_device vads7846_device = {
+	.name		= "reg-fixed-voltage",
+	.id		= 1,
+	.dev = {
+		.platform_data = &vads7846,
+	},
+};
+
+static void __init overo_ads7846_init(void)
+{
+	omap_ads7846_init(1, OVERO_GPIO_PENDOWN, 0, NULL);
+	platform_device_register(&vads7846_device);
+}
+
+#else
+static inline void __init overo_ads7846_init(void) { return; }
+#endif
+
+#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
+
+#include <linux/smsc911x.h>
+#include "gpmc-smsc911x.h"
+
+static struct omap_smsc911x_platform_data smsc911x_cfg = {
+	.id		= 0,
+	.cs             = OVERO_SMSC911X_CS,
+	.gpio_irq       = OVERO_SMSC911X_GPIO,
+	.gpio_reset     = OVERO_SMSC911X_NRESET,
+	.flags		= SMSC911X_USE_32BIT,
+};
+
+static struct omap_smsc911x_platform_data smsc911x2_cfg = {
+	.id		= 1,
+	.cs             = OVERO_SMSC911X2_CS,
+	.gpio_irq       = OVERO_SMSC911X2_GPIO,
+	.gpio_reset     = -EINVAL,
+	.flags		= SMSC911X_USE_32BIT,
+};
+
+static void __init overo_init_smsc911x(void)
+{
+	gpmc_smsc911x_init(&smsc911x_cfg);
+	gpmc_smsc911x_init(&smsc911x2_cfg);
+}
+
+#else
+static inline void __init overo_init_smsc911x(void) { return; }
+#endif
+
+/* DSS */
+#define OVERO_GPIO_LCD_EN 144
+#define OVERO_GPIO_LCD_BL 145
+
+static struct connector_atv_platform_data overo_tv_pdata = {
+	.name = "tv",
+	.source = "venc.0",
+	.connector_type = OMAP_DSS_VENC_TYPE_SVIDEO,
+	.invert_polarity = false,
+};
+
+static struct platform_device overo_tv_connector_device = {
+	.name                   = "connector-analog-tv",
+	.id                     = 0,
+	.dev.platform_data      = &overo_tv_pdata,
+};
+
+static const struct display_timing overo_lcd43_videomode = {
+	.pixelclock	= { 0, 9200000, 0 },
+
+	.hactive = { 0, 480, 0 },
+	.hfront_porch = { 0, 8, 0 },
+	.hback_porch = { 0, 4, 0 },
+	.hsync_len = { 0, 41, 0 },
+
+	.vactive = { 0, 272, 0 },
+	.vfront_porch = { 0, 4, 0 },
+	.vback_porch = { 0, 2, 0 },
+	.vsync_len = { 0, 10, 0 },
+
+	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+		DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+};
+
+static struct panel_dpi_platform_data overo_lcd43_pdata = {
+	.name                   = "lcd43",
+	.source                 = "dpi.0",
+
+	.data_lines		= 24,
+
+	.display_timing		= &overo_lcd43_videomode,
+
+	.enable_gpio		= OVERO_GPIO_LCD_EN,
+	.backlight_gpio		= OVERO_GPIO_LCD_BL,
+};
+
+static struct platform_device overo_lcd43_device = {
+	.name                   = "panel-dpi",
+	.id                     = 0,
+	.dev.platform_data      = &overo_lcd43_pdata,
+};
+
+static struct connector_dvi_platform_data overo_dvi_connector_pdata = {
+	.name                   = "dvi",
+	.source                 = "tfp410.0",
+	.i2c_bus_num            = 3,
+};
+
+static struct platform_device overo_dvi_connector_device = {
+	.name                   = "connector-dvi",
+	.id                     = 0,
+	.dev.platform_data      = &overo_dvi_connector_pdata,
+};
+
+static struct encoder_tfp410_platform_data overo_tfp410_pdata = {
+	.name                   = "tfp410.0",
+	.source                 = "dpi.0",
+	.data_lines             = 24,
+	.power_down_gpio        = -1,
+};
+
+static struct platform_device overo_tfp410_device = {
+	.name                   = "tfp410",
+	.id                     = 0,
+	.dev.platform_data      = &overo_tfp410_pdata,
+};
+
+static struct omap_dss_board_info overo_dss_data = {
+	.default_display_name = "lcd43",
+};
+
+static void __init overo_display_init(void)
+{
+	omap_display_init(&overo_dss_data);
+
+	if (!overo_use_lcd35)
+		platform_device_register(&overo_lcd43_device);
+	platform_device_register(&overo_tfp410_device);
+	platform_device_register(&overo_dvi_connector_device);
+	platform_device_register(&overo_tv_connector_device);
+}
+
+static struct mtd_partition overo_nand_partitions[] = {
+	{
+		.name           = "xloader",
+		.offset         = 0,			/* Offset = 0x00000 */
+		.size           = 4 * NAND_BLOCK_SIZE,
+		.mask_flags     = MTD_WRITEABLE
+	},
+	{
+		.name           = "uboot",
+		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
+		.size           = 14 * NAND_BLOCK_SIZE,
+	},
+	{
+		.name           = "uboot environment",
+		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x240000 */
+		.size           = 2 * NAND_BLOCK_SIZE,
+	},
+	{
+		.name           = "linux",
+		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
+		.size           = 32 * NAND_BLOCK_SIZE,
+	},
+	{
+		.name           = "rootfs",
+		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
+		.size           = MTDPART_SIZ_FULL,
+	},
+};
+
+static struct omap2_hsmmc_info mmc[] = {
+	{
+		.mmc		= 1,
+		.caps		= MMC_CAP_4_BIT_DATA,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= -EINVAL,
+	},
+	{
+		.mmc		= 2,
+		.caps		= MMC_CAP_4_BIT_DATA,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= -EINVAL,
+		.transceiver	= true,
+		.ocr_mask	= 0x00100000,	/* 3.3V */
+	},
+	{}	/* Terminator */
+};
+
+static struct regulator_consumer_supply overo_vmmc1_supply[] = {
+	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
+};
+
+#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
+#include <linux/leds.h>
+
+static struct gpio_led gpio_leds[] = {
+	{
+		.name			= "overo:red:gpio21",
+		.default_trigger	= "heartbeat",
+		.gpio			= 21,
+		.active_low		= true,
+	},
+	{
+		.name			= "overo:blue:gpio22",
+		.default_trigger	= "none",
+		.gpio			= 22,
+		.active_low		= true,
+	},
+	{
+		.name			= "overo:blue:COM",
+		.default_trigger	= "mmc0",
+		.gpio			= -EINVAL,	/* gets replaced */
+		.active_low		= true,
+	},
+};
+
+static struct gpio_led_platform_data gpio_leds_pdata = {
+	.leds		= gpio_leds,
+	.num_leds	= ARRAY_SIZE(gpio_leds),
+};
+
+static struct platform_device gpio_leds_device = {
+	.name	= "leds-gpio",
+	.id	= -1,
+	.dev	= {
+		.platform_data	= &gpio_leds_pdata,
+	},
+};
+
+static void __init overo_init_led(void)
+{
+	platform_device_register(&gpio_leds_device);
+}
+
+#else
+static inline void __init overo_init_led(void) { return; }
+#endif
+
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+
+static struct gpio_keys_button gpio_buttons[] = {
+	{
+		.code			= BTN_0,
+		.gpio			= 23,
+		.desc			= "button0",
+		.wakeup			= 1,
+	},
+	{
+		.code			= BTN_1,
+		.gpio			= 14,
+		.desc			= "button1",
+		.wakeup			= 1,
+	},
+};
+
+static struct gpio_keys_platform_data gpio_keys_pdata = {
+	.buttons	= gpio_buttons,
+	.nbuttons	= ARRAY_SIZE(gpio_buttons),
+};
+
+static struct platform_device gpio_keys_device = {
+	.name	= "gpio-keys",
+	.id	= -1,
+	.dev	= {
+		.platform_data	= &gpio_keys_pdata,
+	},
+};
+
+static void __init overo_init_keys(void)
+{
+	platform_device_register(&gpio_keys_device);
+}
+
+#else
+static inline void __init overo_init_keys(void) { return; }
+#endif
+
+static int overo_twl_gpio_setup(struct device *dev,
+		unsigned gpio, unsigned ngpio)
+{
+#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
+	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
+	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
+#endif
+
+	return 0;
+}
+
+static struct twl4030_gpio_platform_data overo_gpio_data = {
+	.use_leds	= true,
+	.setup		= overo_twl_gpio_setup,
+};
+
+static struct regulator_init_data overo_vmmc1 = {
+	.constraints = {
+		.min_uV			= 1850000,
+		.max_uV			= 3150000,
+		.valid_modes_mask	= REGULATOR_MODE_NORMAL
+					| REGULATOR_MODE_STANDBY,
+		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
+					| REGULATOR_CHANGE_MODE
+					| REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies	= ARRAY_SIZE(overo_vmmc1_supply),
+	.consumer_supplies	= overo_vmmc1_supply,
+};
+
+static struct twl4030_platform_data overo_twldata = {
+	.gpio		= &overo_gpio_data,
+	.vmmc1		= &overo_vmmc1,
+};
+
+static int __init overo_i2c_init(void)
+{
+	omap3_pmic_get_config(&overo_twldata,
+			TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
+			TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
+
+	overo_twldata.vpll2->constraints.name = "VDVI";
+
+	omap3_pmic_init("tps65950", &overo_twldata);
+	/* i2c2 pins are used for gpio */
+	omap_register_i2c_bus(3, 400, NULL, 0);
+	return 0;
+}
+
+static struct panel_lb035q02_platform_data overo_lcd35_pdata = {
+	.name                   = "lcd35",
+	.source                 = "dpi.0",
+
+	.data_lines		= 24,
+
+	.enable_gpio		= OVERO_GPIO_LCD_EN,
+	.backlight_gpio		= OVERO_GPIO_LCD_BL,
+};
+
+/*
+ * NOTE: We need to add either the lgphilips panel, or the lcd43 panel. The
+ * selection is done based on the overo_use_lcd35 field. If new SPI
+ * devices are added here, extra work is needed to make only the lgphilips panel
+ * affected by the overo_use_lcd35 field.
+ */
+static struct spi_board_info overo_spi_board_info[] __initdata = {
+	{
+		.modalias		= "panel_lgphilips_lb035q02",
+		.bus_num		= 1,
+		.chip_select		= 1,
+		.max_speed_hz		= 500000,
+		.mode			= SPI_MODE_3,
+		.platform_data		= &overo_lcd35_pdata,
+	},
+};
+
+static int __init overo_spi_init(void)
+{
+	overo_ads7846_init();
+
+	if (overo_use_lcd35) {
+		spi_register_board_info(overo_spi_board_info,
+				ARRAY_SIZE(overo_spi_board_info));
+	}
+	return 0;
+}
+
+static struct usbhs_phy_data phy_data[] __initdata = {
+	{
+		.port = 2,
+		.reset_gpio = OVERO_GPIO_USBH_NRESET,
+		.vcc_gpio = -EINVAL,
+	},
+};
+
+static struct usbhs_omap_platform_data usbhs_bdata __initdata = {
+	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
+};
+
+#ifdef CONFIG_OMAP_MUX
+static struct omap_board_mux board_mux[] __initdata = {
+	{ .reg_offset = OMAP_MUX_TERMINATOR },
+};
+#endif
+
+static struct gpio overo_bt_gpios[] __initdata = {
+	{ OVERO_GPIO_BT_XGATE,	GPIOF_OUT_INIT_LOW,	"lcd enable"    },
+	{ OVERO_GPIO_BT_NRESET, GPIOF_OUT_INIT_HIGH,	"lcd bl enable" },
+};
+
+static struct regulator_consumer_supply dummy_supplies[] = {
+	REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
+	REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
+	REGULATOR_SUPPLY("vddvario", "smsc911x.1"),
+	REGULATOR_SUPPLY("vdd33a", "smsc911x.1"),
+};
+
+static void __init overo_init(void)
+{
+	int ret;
+
+	if (strstr(boot_command_line, "omapdss.def_disp=lcd35"))
+		overo_use_lcd35 = true;
+
+	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
+	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
+	overo_i2c_init();
+	omap_hsmmc_init(mmc);
+	omap_serial_init();
+	omap_sdrc_init(mt46h32m32lf6_sdrc_params,
+				  mt46h32m32lf6_sdrc_params);
+	board_nand_init(overo_nand_partitions,
+			ARRAY_SIZE(overo_nand_partitions), NAND_CS, 0, NULL);
+	usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
+	usb_musb_init(NULL);
+
+	usbhs_init_phys(phy_data, ARRAY_SIZE(phy_data));
+	usbhs_init(&usbhs_bdata);
+	overo_spi_init();
+	overo_init_smsc911x();
+	overo_init_led();
+	overo_init_keys();
+	omap_twl4030_audio_init("overo", NULL);
+
+	overo_display_init();
+
+	/* Ensure SDRC pins are mux'd for self-refresh */
+	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
+	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
+
+	ret = gpio_request_one(OVERO_GPIO_W2W_NRESET, GPIOF_OUT_INIT_HIGH,
+			       "OVERO_GPIO_W2W_NRESET");
+	if (ret == 0) {
+		gpio_export(OVERO_GPIO_W2W_NRESET, 0);
+		gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
+		udelay(10);
+		gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
+	} else {
+		pr_err("could not obtain gpio for OVERO_GPIO_W2W_NRESET\n");
+	}
+
+	ret = gpio_request_array(overo_bt_gpios, ARRAY_SIZE(overo_bt_gpios));
+	if (ret) {
+		pr_err("%s: could not obtain BT gpios\n", __func__);
+	} else {
+		gpio_export(OVERO_GPIO_BT_XGATE, 0);
+		gpio_export(OVERO_GPIO_BT_NRESET, 0);
+		gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
+		mdelay(6);
+		gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
+	}
+
+	ret = gpio_request_one(OVERO_GPIO_USBH_CPEN, GPIOF_OUT_INIT_HIGH,
+			       "OVERO_GPIO_USBH_CPEN");
+	if (ret == 0)
+		gpio_export(OVERO_GPIO_USBH_CPEN, 0);
+	else
+		pr_err("could not obtain gpio for OVERO_GPIO_USBH_CPEN\n");
+}
+
+MACHINE_START(OVERO, "Gumstix Overo")
+	.atag_offset	= 0x100,
+	.reserve	= omap_reserve,
+	.map_io		= omap3_map_io,
+	.init_early	= omap35xx_init_early,
+	.init_irq	= omap3_init_irq,
+	.init_machine	= overo_init,
+	.init_late	= omap35xx_init_late,
+	.init_time	= omap3_sync32k_timer_init,
+	.restart	= omap3xxx_restart,
+MACHINE_END