Davinci: tnetv107x soc support

TNETV107X is a Texas Instruments SOC that shares a number of common features
with the Davinci architecture.  Some of the key differences between
traditional Davincis and this new SOC are as follow:

1. The SOCs clock architecture includes a new spread-spectrum PLL.  Some
elements of the clock architecture are reused from Davinci (e.g. LPSC), but
the PLL related code is overridden using existing interfaces in "struct clk".

2. The MMR layout on this SOC is substantially different from Davinci.
Consequently, the fixed I/O map is a whole lot more convoluted (more so than
DA8xx).  The net impact here is that IO_ADDRESS() will not work on this SoC,
and therefore all mappings have to be through ioremap().

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 318 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/devices-tnetv107x.c b/arch/arm/mach-davinci/devices-tnetv107x.c
new file mode 100644
index 00000000000..4eef6ccdc73
--- /dev/null
+++ b/arch/arm/mach-davinci/devices-tnetv107x.c
@@ -0,0 +1,318 @@
+/*
+ * Texas Instruments TNETV107X SoC devices
+ *
+ * Copyright (C) 2010 Texas Instruments
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/clk.h>
+#include <linux/slab.h>
+
+#include <mach/common.h>
+#include <mach/irqs.h>
+#include <mach/edma.h>
+#include <mach/tnetv107x.h>
+
+#include "clock.h"
+
+/* Base addresses for on-chip devices */
+#define TNETV107X_TPCC_BASE			0x01c00000
+#define TNETV107X_TPTC0_BASE			0x01c10000
+#define TNETV107X_TPTC1_BASE			0x01c10400
+#define TNETV107X_WDOG_BASE			0x08086700
+#define TNETV107X_SDIO0_BASE			0x08088700
+#define TNETV107X_SDIO1_BASE			0x08088800
+#define TNETV107X_ASYNC_EMIF_CNTRL_BASE		0x08200000
+#define TNETV107X_ASYNC_EMIF_DATA_CE0_BASE	0x30000000
+#define TNETV107X_ASYNC_EMIF_DATA_CE1_BASE	0x40000000
+#define TNETV107X_ASYNC_EMIF_DATA_CE2_BASE	0x44000000
+#define TNETV107X_ASYNC_EMIF_DATA_CE3_BASE	0x48000000
+
+/* TNETV107X specific EDMA3 information */
+#define EDMA_TNETV107X_NUM_DMACH	64
+#define EDMA_TNETV107X_NUM_TCC		64
+#define EDMA_TNETV107X_NUM_PARAMENTRY	128
+#define EDMA_TNETV107X_NUM_EVQUE	2
+#define EDMA_TNETV107X_NUM_TC		2
+#define EDMA_TNETV107X_CHMAP_EXIST	0
+#define EDMA_TNETV107X_NUM_REGIONS	4
+#define TNETV107X_DMACH2EVENT_MAP0	0x3C0CE000u
+#define TNETV107X_DMACH2EVENT_MAP1	0x000FFFFFu
+
+#define TNETV107X_DMACH_SDIO0_RX		26
+#define TNETV107X_DMACH_SDIO0_TX		27
+#define TNETV107X_DMACH_SDIO1_RX		28
+#define TNETV107X_DMACH_SDIO1_TX		29
+
+static const s8 edma_tc_mapping[][2] = {
+	/* event queue no	TC no	*/
+	{	 0,		 0	},
+	{	 1,		 1	},
+	{	-1,		-1	}
+};
+
+static const s8 edma_priority_mapping[][2] = {
+	/* event queue no	Prio	*/
+	{	 0,		 3	},
+	{	 1,		 7	},
+	{	-1,		-1	}
+};
+
+static struct edma_soc_info edma_info[] = {
+	{
+		.n_channel		= EDMA_TNETV107X_NUM_DMACH,
+		.n_region		= EDMA_TNETV107X_NUM_REGIONS,
+		.n_slot			= EDMA_TNETV107X_NUM_PARAMENTRY,
+		.n_tc			= EDMA_TNETV107X_NUM_TC,
+		.n_cc			= 1,
+		.queue_tc_mapping	= edma_tc_mapping,
+		.queue_priority_mapping	= edma_priority_mapping,
+	},
+};
+
+static struct resource edma_resources[] = {
+	{
+		.name	= "edma_cc0",
+		.start	= TNETV107X_TPCC_BASE,
+		.end	= TNETV107X_TPCC_BASE + SZ_32K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.name	= "edma_tc0",
+		.start	= TNETV107X_TPTC0_BASE,
+		.end	= TNETV107X_TPTC0_BASE + SZ_1K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.name	= "edma_tc1",
+		.start	= TNETV107X_TPTC1_BASE,
+		.end	= TNETV107X_TPTC1_BASE + SZ_1K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.name	= "edma0",
+		.start	= IRQ_TNETV107X_TPCC,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.name	= "edma0_err",
+		.start	= IRQ_TNETV107X_TPCC_ERR,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device edma_device = {
+	.name		= "edma",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(edma_resources),
+	.resource	= edma_resources,
+	.dev.platform_data = edma_info,
+};
+
+static struct plat_serial8250_port serial_data[] = {
+	{
+		.mapbase	= TNETV107X_UART0_BASE,
+		.irq		= IRQ_TNETV107X_UART0,
+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
+					UPF_FIXED_TYPE | UPF_IOREMAP,
+		.type		= PORT_AR7,
+		.iotype		= UPIO_MEM32,
+		.regshift	= 2,
+	},
+	{
+		.mapbase	= TNETV107X_UART1_BASE,
+		.irq		= IRQ_TNETV107X_UART1,
+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
+					UPF_FIXED_TYPE | UPF_IOREMAP,
+		.type		= PORT_AR7,
+		.iotype		= UPIO_MEM32,
+		.regshift	= 2,
+	},
+	{
+		.mapbase	= TNETV107X_UART2_BASE,
+		.irq		= IRQ_TNETV107X_UART2,
+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
+					UPF_FIXED_TYPE | UPF_IOREMAP,
+		.type		= PORT_AR7,
+		.iotype		= UPIO_MEM32,
+		.regshift	= 2,
+	},
+	{
+		.flags	= 0,
+	},
+};
+
+struct platform_device tnetv107x_serial_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev.platform_data	= serial_data,
+};
+
+static struct resource mmc0_resources[] = {
+	{ /* Memory mapped registers */
+		.start	= TNETV107X_SDIO0_BASE,
+		.end	= TNETV107X_SDIO0_BASE + 0x0ff,
+		.flags	= IORESOURCE_MEM
+	},
+	{ /* MMC interrupt */
+		.start	= IRQ_TNETV107X_MMC0,
+		.flags	= IORESOURCE_IRQ
+	},
+	{ /* SDIO interrupt */
+		.start	= IRQ_TNETV107X_SDIO0,
+		.flags	= IORESOURCE_IRQ
+	},
+	{ /* DMA RX */
+		.start	= EDMA_CTLR_CHAN(0, TNETV107X_DMACH_SDIO0_RX),
+		.flags	= IORESOURCE_DMA
+	},
+	{ /* DMA TX */
+		.start	= EDMA_CTLR_CHAN(0, TNETV107X_DMACH_SDIO0_TX),
+		.flags	= IORESOURCE_DMA
+	},
+};
+
+static struct resource mmc1_resources[] = {
+	{ /* Memory mapped registers */
+		.start	= TNETV107X_SDIO1_BASE,
+		.end	= TNETV107X_SDIO1_BASE + 0x0ff,
+		.flags	= IORESOURCE_MEM
+	},
+	{ /* MMC interrupt */
+		.start	= IRQ_TNETV107X_MMC1,
+		.flags	= IORESOURCE_IRQ
+	},
+	{ /* SDIO interrupt */
+		.start	= IRQ_TNETV107X_SDIO1,
+		.flags	= IORESOURCE_IRQ
+	},
+	{ /* DMA RX */
+		.start	= EDMA_CTLR_CHAN(0, TNETV107X_DMACH_SDIO1_RX),
+		.flags	= IORESOURCE_DMA
+	},
+	{ /* DMA TX */
+		.start	= EDMA_CTLR_CHAN(0, TNETV107X_DMACH_SDIO1_TX),
+		.flags	= IORESOURCE_DMA
+	},
+};
+
+static u64 mmc0_dma_mask = DMA_BIT_MASK(32);
+static u64 mmc1_dma_mask = DMA_BIT_MASK(32);
+
+static struct platform_device mmc_devices[2] = {
+	{
+		.name		= "davinci_mmc",
+		.id		= 0,
+		.dev		= {
+			.dma_mask		= &mmc0_dma_mask,
+			.coherent_dma_mask	= DMA_BIT_MASK(32),
+		},
+		.num_resources	= ARRAY_SIZE(mmc0_resources),
+		.resource	= mmc0_resources
+	},
+	{
+		.name		= "davinci_mmc",
+		.id		= 1,
+		.dev		= {
+			.dma_mask		= &mmc1_dma_mask,
+			.coherent_dma_mask	= DMA_BIT_MASK(32),
+		},
+		.num_resources	= ARRAY_SIZE(mmc1_resources),
+		.resource	= mmc1_resources
+	},
+};
+
+static const u32 emif_windows[] = {
+	TNETV107X_ASYNC_EMIF_DATA_CE0_BASE, TNETV107X_ASYNC_EMIF_DATA_CE1_BASE,
+	TNETV107X_ASYNC_EMIF_DATA_CE2_BASE, TNETV107X_ASYNC_EMIF_DATA_CE3_BASE,
+};
+
+static const u32 emif_window_sizes[] = { SZ_256M, SZ_64M, SZ_64M, SZ_64M };
+
+static struct resource wdt_resources[] = {
+	{
+		.start	= TNETV107X_WDOG_BASE,
+		.end	= TNETV107X_WDOG_BASE + SZ_4K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device tnetv107x_wdt_device = {
+	.name		= "tnetv107x_wdt",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(wdt_resources),
+	.resource	= wdt_resources,
+};
+
+static int __init nand_init(int chipsel, struct davinci_nand_pdata *data)
+{
+	struct resource res[2];
+	struct platform_device *pdev;
+	u32	range;
+	int	ret;
+
+	/* Figure out the resource range from the ale/cle masks */
+	range = max(data->mask_cle, data->mask_ale);
+	range = PAGE_ALIGN(range + 4) - 1;
+
+	if (range >= emif_window_sizes[chipsel])
+		return -EINVAL;
+
+	pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
+	if (!pdev)
+		return -ENOMEM;
+
+	pdev->name		= "davinci_nand";
+	pdev->id		= chipsel;
+	pdev->dev.platform_data	= data;
+
+	memset(res, 0, sizeof(res));
+
+	res[0].start	= emif_windows[chipsel];
+	res[0].end	= res[0].start + range;
+	res[0].flags	= IORESOURCE_MEM;
+
+	res[1].start	= TNETV107X_ASYNC_EMIF_CNTRL_BASE;
+	res[1].end	= res[1].start + SZ_4K - 1;
+	res[1].flags	= IORESOURCE_MEM;
+
+	ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
+	if (ret < 0) {
+		kfree(pdev);
+		return ret;
+	}
+
+	return platform_device_register(pdev);
+}
+
+void __init tnetv107x_devices_init(struct tnetv107x_device_info *info)
+{
+	int i;
+
+	platform_device_register(&edma_device);
+	platform_device_register(&tnetv107x_wdt_device);
+
+	if (info->serial_config)
+		davinci_serial_init(info->serial_config);
+
+	for (i = 0; i < 2; i++)
+		if (info->mmc_config[i]) {
+			mmc_devices[i].dev.platform_data = info->mmc_config[i];
+			platform_device_register(&mmc_devices[i]);
+		}
+
+	for (i = 0; i < 4; i++)
+		if (info->nand_config[i])
+			nand_init(i, info->nand_config[i]);
+}