* Vimal Singh <[email protected]> [100210 21:16]:
> From: Vimal Singh <[email protected]>
>
> This patch adds 'board-zoom-flash.c', which could be utilized
> by boards similar to ZOOM2. (For ex: LDP, ZOOM2, ZOOM3).
>
> This does initialization for NAND device based on the 'cs' number
> and partition information passed from board file (ex: board-zoom2.c).
>
> Signed-off-by: Vimal Singh <[email protected]>
> ---
> arch/arm/mach-omap2/board-zoom-flash.c | 85
> +++++++++++++++++++++++++
> arch/arm/mach-omap2/include/mach/board-zoom.h | 11 +++
> 2 files changed, 96 insertions(+), 0 deletions(-)
> create mode 100644 arch/arm/mach-omap2/board-zoom-flash.c
>
> 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..f2328a4
> --- /dev/null
> +++ b/arch/arm/mach-omap2/board-zoom-flash.c
> @@ -0,0 +1,85 @@
> +/*
> + * board-zoom-flash.c
> + *
> + * Copyright (C) 2009 Texas Instruments Inc.
> + * Vimal Singh <[email protected]>
> + *
> + * 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 = -1, /* 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);
The gpmc_baseaddr and gpmc_cs_baseaddr should no longer be
needed with gpmc-nand.c, right?
Tony
> + 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);
> --
> 1.6.3.3
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