[PATCH] drivers: mtd: devices: make m25p80 dt adapted.
Sourav Poddar
sourav.poddar at ti.com
Fri Aug 2 02:52:09 EDT 2013
+ correct device tree mailing list
On Friday 02 August 2013 12:19 PM, Sourav Poddar wrote:
> This patch helps gettimg m25p80 probed through dt.
> To get the id of the exact flash type supported for dt case,
> data->type is getting parsed from dt entry.
>
> Signed-off-by: Sourav Poddar<sourav.poddar at ti.com>
> ---
> drivers/mtd/devices/m25p80.c | 22 +++++++++++++++++++++-
> 1 files changed, 21 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
> index 33098bf..cbfb9b3 100644
> --- a/drivers/mtd/devices/m25p80.c
> +++ b/drivers/mtd/devices/m25p80.c
> @@ -855,6 +855,13 @@ static const struct spi_device_id m25p_ids[] = {
> };
> MODULE_DEVICE_TABLE(spi, m25p_ids);
>
> +#ifdef CONFIG_OF
> +static const struct of_device_id m25p_dt_ids[] = {
> + { .compatible = "m25p80", },
> + { /* sentinel */ }
> +};
> +#endif
> +
> static const struct spi_device_id *jedec_probe(struct spi_device *spi)
> {
> int tmp;
> @@ -909,6 +916,7 @@ static int m25p_probe(struct spi_device *spi)
> unsigned i;
> struct mtd_part_parser_data ppdata;
> struct device_node __maybe_unused *np = spi->dev.of_node;
> + int len;
>
> #ifdef CONFIG_MTD_OF_PARTS
> if (!of_device_is_available(np))
> @@ -920,7 +928,18 @@ static int m25p_probe(struct spi_device *spi)
> * a chip ID, try the JEDEC id commands; they'll work for most
> * newer chips, even if we don't recognize the particular chip.
> */
> - data = spi->dev.platform_data;
> + if (!np) {
> + data = spi->dev.platform_data;
> + } else {
> + data = devm_kzalloc(&spi->dev, sizeof(*data), GFP_KERNEL);
> + if (!data)
> + return -ENOMEM;
> +
> + data->type = (char *) of_get_property(np, "type",&len);
> + if (!data->type || strlen(data->type)> len)
> + return -ENODEV;
> + }
> +
> if (data&& data->type) {
> const struct spi_device_id *plat_id;
>
> @@ -1098,6 +1117,7 @@ static struct spi_driver m25p80_driver = {
> .driver = {
> .name = "m25p80",
> .owner = THIS_MODULE,
> + .of_match_table = of_match_ptr(m25p_dt_ids),
> },
> .id_table = m25p_ids,
> .probe = m25p_probe,
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