ENGR00117720-1 MX28: Add MSL codes to support MX28EVK

Add the MSL codes(New Framework) for MX28,
including clock, gpio, pinctrl, interrupt, timer, DMA, etc.

Signed-off-by: Fred Fan <r01011@freescale.com>
Signed-off-by: Robby Cai <R63905@freescale.com>
Signed-off-by: Alejandro Gonzalez <alex.gonzalez@digi.com>

1 files changed, 185 insertions, 0 deletions

diff --git a/arch/arm/mach-mx28/device.c b/arch/arm/mach-mx28/device.c
new file mode 100644
index 000000000000..133370ef5491
--- /dev/null
+++ b/arch/arm/mach-mx28/device.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach/map.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-timrot.h>
+#include <mach/device.h>
+#include <mach/dma.h>
+
+#include "device.h"
+
+#if defined(CONFIG_SERIAL_MXS_DUART) || \
+	defined(CONFIG_SERIAL_MXS_DUART_MODULE)
+static struct resource duart_resource[] = {
+	{
+	 .flags = IORESOURCE_MEM,
+	 .start = DUART_PHYS_ADDR,
+	 .end = DUART_PHYS_ADDR + 0x1000 - 1,
+	 },
+	{
+	 .flags = IORESOURCE_IRQ,
+	 .start = IRQ_DUART,
+	 .end = IRQ_DUART,
+	 },
+};
+
+static void __init mx28_init_duart(void)
+{
+	struct platform_device *pdev;
+	pdev = mxs_get_device("mxs-duart", 0);
+	if (pdev == NULL || IS_ERR(pdev))
+		return;
+	pdev->resource = duart_resource;
+	pdev->num_resources = ARRAY_SIZE(duart_resource);
+	mxs_add_device(pdev, 3);
+}
+#else
+static void mx28_init_duart(void)
+{
+}
+#endif
+
+#if defined(CONFIG_MXS_DMA_ENGINE)
+static struct resource mxs_ahb_apbh_res = {
+	.flags = IORESOURCE_MEM,
+	.start = APBH_DMA_PHYS_ADDR,
+	.end = APBH_DMA_PHYS_ADDR + 0x2000 - 1,
+};
+
+static struct mxs_dma_plat_data mxs_ahb_apbh_data = {
+	.chan_base = MXS_DMA_CHANNEL_AHB_APBH,
+	.chan_num = 16,
+};
+
+static struct resource mxs_ahb_apbx_res = {
+	.flags = IORESOURCE_MEM,
+	.start = APBX_DMA_PHYS_ADDR,
+	.end = APBX_DMA_PHYS_ADDR + 0x2000 - 1,
+};
+
+static struct mxs_dma_plat_data mxs_ahb_apbx_data = {
+	.chan_base = MXS_DMA_CHANNEL_AHB_APBX,
+	.chan_num = 16,
+};
+
+static void __init mx28_init_dma(void)
+{
+	int i;
+	struct mxs_dev_lookup *lookup;
+	struct platform_device *pdev;
+	lookup = mxs_get_devices("mxs-dma");
+	if (lookup == NULL || IS_ERR(lookup))
+		return;
+	for (i = 0; i < lookup->size; i++) {
+		pdev = lookup->pdev + i;
+		if (!strcmp(pdev->name, "mxs-dma-apbh")) {
+			pdev->resource = &mxs_ahb_apbh_res;
+			pdev->dev.platform_data = &mxs_ahb_apbh_data;
+		} else if (!strcmp(pdev->name, "mxs-dma-apbx")) {
+			pdev->resource = &mxs_ahb_apbx_res;
+			pdev->dev.platform_data = &mxs_ahb_apbx_data;
+		} else
+			continue;
+		pdev->num_resources = 1;
+		mxs_add_device(pdev, 0);
+	}
+}
+#else
+static void mx28_init_dma(void)
+{
+	;
+}
+#endif
+
+int __init mx28_device_init(void)
+{
+	mx28_init_dma();
+	mx28_init_duart();
+
+	return 0;
+}
+
+static struct __initdata map_desc mx28_io_desc[] = {
+	{
+	 .virtual = MX28_SOC_IO_VIRT_BASE,
+	 .pfn = __phys_to_pfn(MX28_SOC_IO_PHYS_BASE),
+	 .length = MX28_SOC_IO_AREA_SIZE,
+	 .type = MT_DEVICE,
+	 },
+};
+
+void __init mx28_map_io(void)
+{
+	iotable_init(mx28_io_desc, ARRAY_SIZE(mx28_io_desc));
+}
+
+void __init mx28_irq_init(void)
+{
+	avic_init_irq(IO_ADDRESS(ICOLL_PHYS_ADDR), ARCH_NR_IRQS);
+}
+
+static void mx28_timer_init(void)
+{
+	int i, reg;
+	mx28_clock_init();
+
+	mx28_timer.clk = clk_get(NULL, "clk_32k");
+	if (mx28_timer.clk == NULL || IS_ERR(mx28_timer.clk))
+		return;
+	__raw_writel(BM_TIMROT_ROTCTRL_SFTRST,
+		     mx28_timer.base + HW_TIMROT_ROTCTRL_CLR);
+	for (i = 0; i < 10000; i++) {
+		reg = __raw_readl(mx28_timer.base + HW_TIMROT_ROTCTRL);
+		if (!(reg & BM_TIMROT_ROTCTRL_SFTRST))
+			break;
+		udelay(2);
+	}
+	if (i >= 10000)
+		return;
+	__raw_writel(BM_TIMROT_ROTCTRL_CLKGATE,
+		     mx28_timer.base + HW_TIMROT_ROTCTRL_CLR);
+
+	reg = __raw_readl(mx28_timer.base + HW_TIMROT_ROTCTRL);
+	for (i = 0; i < 4; i++) {
+		if (!(reg & (BM_TIMROT_ROTCTRL_TIM0_PRESENT << i)))
+			continue;
+		mx28_timer.id = i;
+		mx28_timer.irq = IRQ_TIMER0 + i;
+		mxs_timer_init(&mx28_timer);
+		return;
+	}
+}
+
+struct mxs_sys_timer mx28_timer = {
+	.timer = {
+		  .init = mx28_timer_init,
+		  },
+	.clk_sel = BV_TIMROT_TIMCTRLn_SELECT__32KHZ_XTAL,
+	.base = IO_ADDRESS(TIMROT_PHYS_ADDR),
+};