On Mon, 2012-08-20 at 18:52 +0530, Chandrabhanu Mahapatra wrote:
> All the cpu_is checks have been moved to dispc_init_features function
> providing
> a much more generic and cleaner interface. The OMAP version and revision
> specific functions and data are initialized by dispc_features structure which
> is
> local to dispc.c.
>
> Signed-off-by: Chandrabhanu Mahapatra <cmahapa...@ti.com>
> ---
> drivers/video/omap2/dss/dispc.c | 433
> +++++++++++++++++++++++++--------------
> 1 file changed, 278 insertions(+), 155 deletions(-)
>
> diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
> index ff52702..3fad33a 100644
> --- a/drivers/video/omap2/dss/dispc.c
> +++ b/drivers/video/omap2/dss/dispc.c
> @@ -81,6 +81,23 @@ struct dispc_irq_stats {
> unsigned irqs[32];
> };
>
> +struct dispc_features {
> + int hp_max;
> + int vp_max;
> + int sw_max;
> + int sw_start;
> + int fp_start;
> + int bp_start;
Here you could use a bit smaller datatype. u16 should probably be more
than enough.
> +static int __init dispc_init_features(struct device *dev)
> +{
> + struct dispc_features *feat = devm_kzalloc(dev, sizeof(*feat),
> + GFP_KERNEL);
> + if (!feat) {
> + dev_err(dev, "Failed to allocate DISPC Features\n");
> + return -ENOMEM;
> + }
> +
> + if (cpu_is_omap24xx()) {
> + memcpy(feat, &omap24xx_dispc_feats, sizeof(*feat));
> + } else if (cpu_is_omap34xx()) {
> + if (omap_rev() < OMAP3430_REV_ES3_0)
> + memcpy(feat, &omap34xx_rev1_0_dispc_feats,
> + sizeof(*feat));
> + else
> + memcpy(feat, &omap34xx_rev3_0_dispc_feats,
> + sizeof(*feat));
> + } else if (cpu_is_omap44xx()) {
> + memcpy(feat, &omap44xx_dispc_feats, sizeof(*feat));
> + } else {
> + return -ENODEV;
> + }
> +
> + dispc.feat = feat;
> +
> + return 0;
> +}
This becomes much cleaner with something like the following (same could
be used in dss.c also):
const struct dispc_features *src;
struct dispc_features *dst;
dst = devm_kzalloc(dev, sizeof(*dst), GFP_KERNEL);
if (!dsst) {
dev_err(dev, "Failed to allocate DISPC Features\n");
return -ENOMEM;
}
if (cpu_is_omap24xx()) {
src = &omap24xx_dispc_feats;
} else if (cpu_is_omap34xx()) {
if (omap_rev() < OMAP3430_REV_ES3_0)
src = &omap34xx_rev1_0_dispc_feats;
else
src = &omap34xx_rev3_0_dispc_feats;
} else if (cpu_is_omap44xx()) {
src = &omap44xx_dispc_feats;
} else {
return -ENODEV;
}
memcpy(dst, src, sizeof(*dst));
dispc.feat = dst;
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