On Thu, 8 Mar 2012 22:03:57 +0530, Aneesh V <[email protected]> wrote:
> Cc: Rajendra Nayak <[email protected]>
> Cc: Benoit Cousson <[email protected]>
> Signed-off-by: Aneesh V <[email protected]>
> ---
> Changes since RFC v4:
> - Rebased to the latest version of EMIF series
> - Replace kzalloc()/kfree() with devm_* variants
> ---
> drivers/misc/emif.c | 289
> ++++++++++++++++++++++++++++++++++++++++++++++++++-
> 1 files changed, 288 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/misc/emif.c b/drivers/misc/emif.c
> index 79fb161..0aaa61e 100644
> --- a/drivers/misc/emif.c
> +++ b/drivers/misc/emif.c
> @@ -18,6 +18,7 @@
> #include <linux/platform_device.h>
> #include <linux/interrupt.h>
> #include <linux/slab.h>
> +#include <linux/of.h>
> #include <linux/debugfs.h>
> #include <linux/seq_file.h>
> #include <linux/module.h>
> @@ -49,6 +50,7 @@
> * frequency in effect at the moment)
> * @plat_data: Pointer to saved platform data.
> * @debugfs_root: dentry to the root folder for EMIF in debugfs
> + * @np_ddr: Pointer to ddr device tree node
> */
> struct emif_data {
> u8 duplicate;
> @@ -63,6 +65,9 @@ struct emif_data {
> struct emif_regs *curr_regs;
> struct emif_platform_data *plat_data;
> struct dentry *debugfs_root;
> +#if defined(CONFIG_OF)
> + struct device_node *np_ddr;
> +#endif
Don't bother with the #if/#endif wrapper here.
> };
>
> static struct emif_data *emif1;
> @@ -1147,6 +1152,270 @@ static int is_custom_config_valid(struct
> emif_custom_configs *cust_cfgs,
> return valid;
> }
>
> +#if defined(CONFIG_OF)
> +static void __init of_get_custom_configs(struct device_node *np_emif,
__devinit. Same through the rest of the file.
[...]
> + return NULL;
> +out:
> + return emif;
> +}
> +#endif
> +
> static struct emif_data * __init get_device_details(
This function also must be __devinit
> struct platform_device *pdev)
> {
> @@ -1266,7 +1535,13 @@ static int __init emif_probe(struct platform_device
> *pdev)
> struct resource *res;
> int irq;
>
> - emif = get_device_details(pdev);
> +#if defined(CONFIG_OF)
> + if (pdev->dev.of_node)
> + emif = of_get_device_details(pdev->dev.of_node, &pdev->dev);
> + else
> +#endif
> + emif = get_device_details(pdev);
> +
> if (!emif) {
> pr_err("%s: error getting device data\n", __func__);
> goto error;
> @@ -1643,11 +1918,23 @@ static void __attribute__((unused))
> freq_post_notify_handling(void)
> spin_unlock_irqrestore(&emif_lock, irq_state);
> }
>
> +#if defined(CONFIG_OF)
> +static const struct of_device_id emif_of_match[] = {
> + { .compatible = "ti,emif-4d" },
> + { .compatible = "ti,emif-4d5" },
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, emif_of_match);
> +#endif
> +
> static struct platform_driver emif_driver = {
> .remove = __exit_p(emif_remove),
Not part of this patch I realize, but this is a bug. .remove must
be in the __devexit section and the __devexit_p() wrapper must
be used. Similarly, emif_probe must be in the __devinit section.
> .shutdown = emif_shutdown,
> .driver = {
> .name = "emif",
> +#if defined(CONFIG_OF)
> + .of_match_table = of_match_ptr(emif_of_match),
> +#endif
The of_match_ptr() macro makes the #if/#endif wrapper redundant.
Otherwise, on brief review this patch looks right.
g.
> },
> };
>
> --
> 1.7.1
>
>
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> linux-arm-kernel mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
--
Grant Likely, B.Sc, P.Eng.
Secret Lab Technologies,Ltd.
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