[v3,1/8] omap3: zoom: Introducing 'board-zoom-flash.c'

Commit Message

Sukumar Ghorai April 13, 2010, 5:37 p.m. UTC

None

Patch

diff --git a/arch/arm/mach-omap2/board-zoom-flash.c b/arch/arm/mach-omap2/board-zoom-flash.c
new file mode 100644
index 0000000..55e173b
--- /dev/null
+++ b/arch/arm/mach-omap2/board-zoom-flash.c
@@ -0,0 +1,82 @@ 
+/*
+ * board-zoom-flash.c
+ *
+ * Copyright (C) 2009 Texas Instruments Inc.
+ * Vimal Singh <[e-mail]>
+ *
+ * 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/kernel.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/nand.h>
+#include <linux/types.h>
+#include <linux/io.h>
+
+#include <asm/mach/flash.h>
+#include <plat/board.h>
+#include <plat/gpmc.h>
+#include <plat/nand.h>
+
+#include <mach/board-zoom.h>
+
+#if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
+
+/* Note that all values in this struct are in nanoseconds */
+static struct gpmc_timings nand_timings = {
+
+	.sync_clk = 0,
+
+	.cs_on = 0,
+	.cs_rd_off = 36,
+	.cs_wr_off = 36,
+
+	.adv_on = 6,
+	.adv_rd_off = 24,
+	.adv_wr_off = 36,
+
+	.we_off = 30,
+	.oe_off = 48,
+
+	.access = 54,
+	.rd_cycle = 72,
+	.wr_cycle = 72,
+
+	.wr_access = 30,
+	.wr_data_mux_bus = 0,
+};
+
+/* NAND chip access: 16 bit */
+static struct omap_nand_platform_data zoom_nand_data = {
+	.nand_setup	= NULL,
+	.gpmc_t		= &nand_timings,
+	.dma_channel	= 3,	/* disable DMA in OMAP NAND driver */
+	.dev_ready	= NULL,
+	.devsize	= 1,	/* '0' for 8-bit, '1' for 16-bit device */
+};
+
+/**
+ * zoom_flash_init - Identify devices connected to GPMC and register.
+ *
+ * @return - void.
+ */
+void __init zoom_flash_init(struct flash_partitions zoom_nand_parts[], int cs)
+{
+	u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
+
+	zoom_nand_data.cs		= cs;
+	zoom_nand_data.parts		= zoom_nand_parts[0].parts;
+	zoom_nand_data.nr_parts		= zoom_nand_parts[0].nr_parts;
+	zoom_nand_data.gpmc_baseaddr	= (void *)(gpmc_base_add);
+	zoom_nand_data.gpmc_cs_baseaddr	= (void *)(gpmc_base_add +
+					GPMC_CS0_BASE +	cs * GPMC_CS_SIZE);
+	gpmc_nand_init(&zoom_nand_data);
+}
+#else
+void __init zoom_flash_init(struct flash_partitions zoom_nand_parts[], int cs)
+{
+}
+#endif /* CONFIG_MTD_NAND_OMAP2 ||  CONFIG_MTD_NAND_OMAP2_MODULE */
diff --git a/arch/arm/mach-omap2/include/mach/board-zoom.h b/arch/arm/mach-omap2/include/mach/board-zoom.h
index c93b29e..f4469d3 100644
--- a/arch/arm/mach-omap2/include/mach/board-zoom.h
+++ b/arch/arm/mach-omap2/include/mach/board-zoom.h
@@ -1,5 +1,16 @@ 
 /*
  * Defines for zoom boards
  */
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+struct flash_partitions {
+	struct mtd_partition *parts;
+	int nr_parts;
+};
+
+#define ZOOM_NAND_CS	0
+
+extern void __init zoom_flash_init(struct flash_partitions [], int);
 extern int __init zoom_debugboard_init(void);
 extern void __init zoom_peripherals_init(void);