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, 446 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-omap1/mcbsp.c b/kernel/arch/arm/mach-omap1/mcbsp.c
new file mode 100644
index 000000000..8ed67f8d1
--- /dev/null
+++ b/kernel/arch/arm/mach-omap1/mcbsp.c
@@ -0,0 +1,446 @@
+/*
+ * linux/arch/arm/mach-omap1/mcbsp.c
+ *
+ * Copyright (C) 2008 Instituto Nokia de Tecnologia
+ * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
+ *
+ * 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.
+ *
+ * Multichannel mode not supported.
+ */
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <linux/omap-dma.h>
+#include <mach/mux.h>
+#include "soc.h"
+#include <linux/platform_data/asoc-ti-mcbsp.h>
+
+#include <mach/irqs.h>
+
+#include "iomap.h"
+
+#define DPS_RSTCT2_PER_EN	(1 << 0)
+#define DSP_RSTCT2_WD_PER_EN	(1 << 1)
+
+static int dsp_use;
+static struct clk *api_clk;
+static struct clk *dsp_clk;
+static struct platform_device **omap_mcbsp_devices;
+
+static void omap1_mcbsp_request(unsigned int id)
+{
+	/*
+	 * On 1510, 1610 and 1710, McBSP1 and McBSP3
+	 * are DSP public peripherals.
+	 */
+	if (id == 0 || id == 2) {
+		if (dsp_use++ == 0) {
+			api_clk = clk_get(NULL, "api_ck");
+			dsp_clk = clk_get(NULL, "dsp_ck");
+			if (!IS_ERR(api_clk) && !IS_ERR(dsp_clk)) {
+				clk_enable(api_clk);
+				clk_enable(dsp_clk);
+
+				/*
+				 * DSP external peripheral reset
+				 * FIXME: This should be moved to dsp code
+				 */
+				__raw_writew(__raw_readw(DSP_RSTCT2) | DPS_RSTCT2_PER_EN |
+						DSP_RSTCT2_WD_PER_EN, DSP_RSTCT2);
+			}
+		}
+	}
+}
+
+static void omap1_mcbsp_free(unsigned int id)
+{
+	if (id == 0 || id == 2) {
+		if (--dsp_use == 0) {
+			if (!IS_ERR(api_clk)) {
+				clk_disable(api_clk);
+				clk_put(api_clk);
+			}
+			if (!IS_ERR(dsp_clk)) {
+				clk_disable(dsp_clk);
+				clk_put(dsp_clk);
+			}
+		}
+	}
+}
+
+static struct omap_mcbsp_ops omap1_mcbsp_ops = {
+	.request	= omap1_mcbsp_request,
+	.free		= omap1_mcbsp_free,
+};
+
+#define OMAP7XX_MCBSP1_BASE	0xfffb1000
+#define OMAP7XX_MCBSP2_BASE	0xfffb1800
+
+#define OMAP1510_MCBSP1_BASE	0xe1011800
+#define OMAP1510_MCBSP2_BASE	0xfffb1000
+#define OMAP1510_MCBSP3_BASE	0xe1017000
+
+#define OMAP1610_MCBSP1_BASE	0xe1011800
+#define OMAP1610_MCBSP2_BASE	0xfffb1000
+#define OMAP1610_MCBSP3_BASE	0xe1017000
+
+#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
+struct resource omap7xx_mcbsp_res[][6] = {
+	{
+		{
+			.start = OMAP7XX_MCBSP1_BASE,
+			.end   = OMAP7XX_MCBSP1_BASE + SZ_256,
+			.flags = IORESOURCE_MEM,
+		},
+		{
+			.name  = "rx",
+			.start = INT_7XX_McBSP1RX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "tx",
+			.start = INT_7XX_McBSP1TX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "rx",
+			.start = 9,
+			.flags = IORESOURCE_DMA,
+		},
+		{
+			.name  = "tx",
+			.start = 8,
+			.flags = IORESOURCE_DMA,
+		},
+	},
+	{
+		{
+			.start = OMAP7XX_MCBSP2_BASE,
+			.end   = OMAP7XX_MCBSP2_BASE + SZ_256,
+			.flags = IORESOURCE_MEM,
+		},
+		{
+			.name  = "rx",
+			.start = INT_7XX_McBSP2RX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "tx",
+			.start = INT_7XX_McBSP2TX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "rx",
+			.start = 11,
+			.flags = IORESOURCE_DMA,
+		},
+		{
+			.name  = "tx",
+			.start = 10,
+			.flags = IORESOURCE_DMA,
+		},
+	},
+};
+
+#define omap7xx_mcbsp_res_0		omap7xx_mcbsp_res[0]
+
+static struct omap_mcbsp_platform_data omap7xx_mcbsp_pdata[] = {
+	{
+		.ops		= &omap1_mcbsp_ops,
+	},
+	{
+		.ops		= &omap1_mcbsp_ops,
+	},
+};
+#define OMAP7XX_MCBSP_RES_SZ		ARRAY_SIZE(omap7xx_mcbsp_res[1])
+#define OMAP7XX_MCBSP_COUNT		ARRAY_SIZE(omap7xx_mcbsp_res)
+#else
+#define omap7xx_mcbsp_res_0		NULL
+#define omap7xx_mcbsp_pdata		NULL
+#define OMAP7XX_MCBSP_RES_SZ		0
+#define OMAP7XX_MCBSP_COUNT		0
+#endif
+
+#ifdef CONFIG_ARCH_OMAP15XX
+struct resource omap15xx_mcbsp_res[][6] = {
+	{
+		{
+			.start = OMAP1510_MCBSP1_BASE,
+			.end   = OMAP1510_MCBSP1_BASE + SZ_256,
+			.flags = IORESOURCE_MEM,
+		},
+		{
+			.name  = "rx",
+			.start = INT_McBSP1RX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "tx",
+			.start = INT_McBSP1TX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "rx",
+			.start = 9,
+			.flags = IORESOURCE_DMA,
+		},
+		{
+			.name  = "tx",
+			.start = 8,
+			.flags = IORESOURCE_DMA,
+		},
+	},
+	{
+		{
+			.start = OMAP1510_MCBSP2_BASE,
+			.end   = OMAP1510_MCBSP2_BASE + SZ_256,
+			.flags = IORESOURCE_MEM,
+		},
+		{
+			.name  = "rx",
+			.start = INT_1510_SPI_RX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "tx",
+			.start = INT_1510_SPI_TX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "rx",
+			.start = 17,
+			.flags = IORESOURCE_DMA,
+		},
+		{
+			.name  = "tx",
+			.start = 16,
+			.flags = IORESOURCE_DMA,
+		},
+	},
+	{
+		{
+			.start = OMAP1510_MCBSP3_BASE,
+			.end   = OMAP1510_MCBSP3_BASE + SZ_256,
+			.flags = IORESOURCE_MEM,
+		},
+		{
+			.name  = "rx",
+			.start = INT_McBSP3RX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "tx",
+			.start = INT_McBSP3TX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "rx",
+			.start = 11,
+			.flags = IORESOURCE_DMA,
+		},
+		{
+			.name  = "tx",
+			.start = 10,
+			.flags = IORESOURCE_DMA,
+		},
+	},
+};
+
+#define omap15xx_mcbsp_res_0		omap15xx_mcbsp_res[0]
+
+static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
+	{
+		.ops		= &omap1_mcbsp_ops,
+	},
+	{
+		.ops		= &omap1_mcbsp_ops,
+	},
+	{
+		.ops		= &omap1_mcbsp_ops,
+	},
+};
+#define OMAP15XX_MCBSP_RES_SZ		ARRAY_SIZE(omap15xx_mcbsp_res[1])
+#define OMAP15XX_MCBSP_COUNT		ARRAY_SIZE(omap15xx_mcbsp_res)
+#else
+#define omap15xx_mcbsp_res_0		NULL
+#define omap15xx_mcbsp_pdata		NULL
+#define OMAP15XX_MCBSP_RES_SZ		0
+#define OMAP15XX_MCBSP_COUNT		0
+#endif
+
+#ifdef CONFIG_ARCH_OMAP16XX
+struct resource omap16xx_mcbsp_res[][6] = {
+	{
+		{
+			.start = OMAP1610_MCBSP1_BASE,
+			.end   = OMAP1610_MCBSP1_BASE + SZ_256,
+			.flags = IORESOURCE_MEM,
+		},
+		{
+			.name  = "rx",
+			.start = INT_McBSP1RX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "tx",
+			.start = INT_McBSP1TX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "rx",
+			.start = 9,
+			.flags = IORESOURCE_DMA,
+		},
+		{
+			.name  = "tx",
+			.start = 8,
+			.flags = IORESOURCE_DMA,
+		},
+	},
+	{
+		{
+			.start = OMAP1610_MCBSP2_BASE,
+			.end   = OMAP1610_MCBSP2_BASE + SZ_256,
+			.flags = IORESOURCE_MEM,
+		},
+		{
+			.name  = "rx",
+			.start = INT_1610_McBSP2_RX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "tx",
+			.start = INT_1610_McBSP2_TX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "rx",
+			.start = 17,
+			.flags = IORESOURCE_DMA,
+		},
+		{
+			.name  = "tx",
+			.start = 16,
+			.flags = IORESOURCE_DMA,
+		},
+	},
+	{
+		{
+			.start = OMAP1610_MCBSP3_BASE,
+			.end   = OMAP1610_MCBSP3_BASE + SZ_256,
+			.flags = IORESOURCE_MEM,
+		},
+		{
+			.name  = "rx",
+			.start = INT_McBSP3RX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "tx",
+			.start = INT_McBSP3TX,
+			.flags = IORESOURCE_IRQ,
+		},
+		{
+			.name  = "rx",
+			.start = 11,
+			.flags = IORESOURCE_DMA,
+		},
+		{
+			.name  = "tx",
+			.start = 10,
+			.flags = IORESOURCE_DMA,
+		},
+	},
+};
+
+#define omap16xx_mcbsp_res_0		omap16xx_mcbsp_res[0]
+
+static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
+	{
+		.ops		= &omap1_mcbsp_ops,
+	},
+	{
+		.ops		= &omap1_mcbsp_ops,
+	},
+	{
+		.ops		= &omap1_mcbsp_ops,
+	},
+};
+#define OMAP16XX_MCBSP_RES_SZ		ARRAY_SIZE(omap16xx_mcbsp_res[1])
+#define OMAP16XX_MCBSP_COUNT		ARRAY_SIZE(omap16xx_mcbsp_res)
+#else
+#define omap16xx_mcbsp_res_0		NULL
+#define omap16xx_mcbsp_pdata		NULL
+#define OMAP16XX_MCBSP_RES_SZ		0
+#define OMAP16XX_MCBSP_COUNT		0
+#endif
+
+static void omap_mcbsp_register_board_cfg(struct resource *res, int res_count,
+			struct omap_mcbsp_platform_data *config, int size)
+{
+	int i;
+
+	omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
+				     GFP_KERNEL);
+	if (!omap_mcbsp_devices) {
+		printk(KERN_ERR "Could not register McBSP devices\n");
+		return;
+	}
+
+	for (i = 0; i < size; i++) {
+		struct platform_device *new_mcbsp;
+		int ret;
+
+		new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
+		if (!new_mcbsp)
+			continue;
+		platform_device_add_resources(new_mcbsp, &res[i * res_count],
+					res_count);
+		config[i].reg_size = 2;
+		config[i].reg_step = 2;
+		new_mcbsp->dev.platform_data = &config[i];
+		ret = platform_device_add(new_mcbsp);
+		if (ret) {
+			platform_device_put(new_mcbsp);
+			continue;
+		}
+		omap_mcbsp_devices[i] = new_mcbsp;
+	}
+}
+
+static int __init omap1_mcbsp_init(void)
+{
+	if (!cpu_class_is_omap1())
+		return -ENODEV;
+
+	if (cpu_is_omap7xx())
+		omap_mcbsp_register_board_cfg(omap7xx_mcbsp_res_0,
+					OMAP7XX_MCBSP_RES_SZ,
+					omap7xx_mcbsp_pdata,
+					OMAP7XX_MCBSP_COUNT);
+
+	if (cpu_is_omap15xx())
+		omap_mcbsp_register_board_cfg(omap15xx_mcbsp_res_0,
+					OMAP15XX_MCBSP_RES_SZ,
+					omap15xx_mcbsp_pdata,
+					OMAP15XX_MCBSP_COUNT);
+
+	if (cpu_is_omap16xx())
+		omap_mcbsp_register_board_cfg(omap16xx_mcbsp_res_0,
+					OMAP16XX_MCBSP_RES_SZ,
+					omap16xx_mcbsp_pdata,
+					OMAP16XX_MCBSP_COUNT);
+
+	return 0;
+}
+
+arch_initcall(omap1_mcbsp_init);