On 06/11/2012 09:27 AM, Afzal Mohammed wrote:
> Helper for reconfiguring CS, peripheral that necessitated
> it was OneNAND.
Why? I think you need to add more about why this was needed.
Jon
> Signed-off-by: Afzal Mohammed <afzal@xxxxxx>
> ---
> arch/arm/mach-omap2/gpmc.c | 32 ++++++++++++++++++++++++++++++++
> arch/arm/plat-omap/include/plat/gpmc.h | 2 ++
> 2 files changed, 34 insertions(+)
>
> diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
> index 281bd23..d493a4c 100644
> --- a/arch/arm/mach-omap2/gpmc.c
> +++ b/arch/arm/mach-omap2/gpmc.c
> @@ -1429,6 +1429,38 @@ struct platform_device *gpmc_create_device(struct gpmc_peripheral *p)
> return pdev;
> }
>
> +static int gpmc_match_device(char *name, int id)
> +{
> + int i;
> + struct gpmc_peripheral *g_per = gpmc_peripheral;
> +
> + for (i = 0; i < gpmc_num_peripheral; i++, g_per++)
> + if (!strcmp(g_per->name, name) && g_per->id == id)
> + return i;
> +
> + return -ENOENT;
> +}
> +
> +int gpmc_cs_reconfigure(char *name, int id, struct gpmc_cs_data *c)
> +{
> + int i;
> +
> + i = gpmc_match_device(name, id);
> + if (IS_ERR_VALUE(i)) {
> + dev_err(gpmc_dev, "no device %s.%d to configure\n", name, id);
> + return i;
> + }
> +
> + if (IS_ERR_VALUE(gpmc_setup_cs_config_timing(gpmc_peripheral + i, c))) {
> + dev_err(gpmc_dev, "error: configure device %s.%d\n", name, id);
> + return i;
> + }
> +
> + return gpmc_setup_waitpin(gpmc_peripheral + i);
> +
> +}
> +EXPORT_SYMBOL_GPL(gpmc_cs_reconfigure);
> +
> static __devinit int gpmc_probe(struct platform_device *pdev)
> {
> u32 l;
> diff --git a/arch/arm/plat-omap/include/plat/gpmc.h b/arch/arm/plat-omap/include/plat/gpmc.h
> index e1b130c..32017a1 100644
> --- a/arch/arm/plat-omap/include/plat/gpmc.h
> +++ b/arch/arm/plat-omap/include/plat/gpmc.h
> @@ -247,6 +247,8 @@ extern int gpmc_cs_configure(int cs, int cmd, int wval);
> extern int gpmc_nand_read(int cs, int cmd);
> extern int gpmc_nand_write(int cs, int cmd, int wval);
>
> +extern int gpmc_cs_reconfigure(char *name, int id, struct gpmc_cs_data *c);
> +
> int gpmc_enable_hwecc(int cs, int mode, int dev_width, int ecc_size);
> int gpmc_calculate_ecc(int cs, const u_char *dat, u_char *ecc_code);
>
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