Sumit Semwal <sumit.semwal@xxxxxx> writes:
> From: Senthilvadivu Guruswamy <svadivu@xxxxxx>
>
> Looks up the hwmod database for each of the given DSS HW IP and builds
> omap_device which inturn does the platform device register for each of DSS HW IP
>
> Signed-off-by: Senthilvadivu Guruswamy <svadivu@xxxxxx>
> Signed-off-by: Sumit Semwal <sumit.semwal@xxxxxx>
> ---
> arch/arm/mach-omap2/display.c | 44 +++++++++++++++++++++++++++++
> arch/arm/plat-omap/include/plat/display.h | 6 ++++
> 2 files changed, 50 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
> index 26d3feb..276b800 100644
> --- a/arch/arm/mach-omap2/display.c
> +++ b/arch/arm/mach-omap2/display.c
> @@ -36,10 +36,54 @@ static struct platform_device omap_display_device = {
> },
> };
>
> +static struct omap_device_pm_latency omap_dss_latency[] = {
> + [0] = {
> + .deactivate_func = omap_device_idle_hwmods,
> + .activate_func = omap_device_enable_hwmods,
Without any latency numbers or AUTO_ADJUST you're going to have noisy
output from omap_device.
> + },
> +};
> +
> int __init omap_display_init(struct omap_dss_board_info
> *board_data)
> {
> int r = 0;
> + struct omap_hwmod *oh;
> + struct omap_device *od;
> + int i;
> + struct omap_display_platform_data pdata;
> + char *oh_name[] = { "dss_dss", /* omap2,3 */
> + "dss_dispc", /* omap2,3 */
> + "dss_rfbi", /* omap2,3 */
> + "dss_venc", /* omap2,3 */
> + "dss_dsi1" }; /* omap3 */
Why all the extra whitespace before the strings?
> + char *dev_name[] = { "omap_dss", "omap_dispc", "omap_rfbi",
> + "omap_venc", "omap_dsi1" };
ditto
> + int oh_count;
> +
> + if (cpu_is_omap24xx()) {
> + oh_count = ARRAY_SIZE(oh_name) - 1;
> + /* last hwmod dev in oh_name is not available for omap2 */
> + } else {
> + oh_count = ARRAY_SIZE(oh_name);
> + }
braces not needed
> + pdata.board_data = board_data;
extra whitespace not necessary
> + pdata.board_data->get_last_off_on_transaction_id = NULL;
instead, you should probably zero all of pdata before using it since it
is on the stack
> + for (i = 0; i < oh_count; i++) {
> + oh = omap_hwmod_lookup(oh_name[i]);
> + if (!oh) {
> + pr_err("Could not look up %s\n", oh_name[i]);
> + return r;
> + }
> + od = omap_device_build(dev_name[i], -1, oh, &pdata,
> + sizeof(struct omap_display_platform_data),
> + omap_dss_latency,
> + ARRAY_SIZE(omap_dss_latency), 0);
> +
> + WARN((IS_ERR(od)), "Could not build omap_device for %s\n",
> + oh_name[i]);
yet code below will still try and register it?
> + }
> omap_display_device.dev.platform_data = board_data;
>
> r = platform_device_register(&omap_display_device);
> diff --git a/arch/arm/plat-omap/include/plat/display.h b/arch/arm/plat-omap/include/plat/display.h
> index 871bbae..23afd6d 100644
> --- a/arch/arm/plat-omap/include/plat/display.h
> +++ b/arch/arm/plat-omap/include/plat/display.h
> @@ -26,6 +26,7 @@
> #include <linux/platform_device.h>
> #include <asm/atomic.h>
>
> +
stray whitespace change
> #define DISPC_IRQ_FRAMEDONE (1 << 0)
> #define DISPC_IRQ_VSYNC (1 << 1)
> #define DISPC_IRQ_EVSYNC_EVEN (1 << 2)
> @@ -224,6 +225,11 @@ struct omap_dss_board_info {
> /* Init with the board info */
> extern int omap_display_init(struct omap_dss_board_info *board_data);
>
> +struct omap_display_platform_data {
> + struct omap_dss_board_info *board_data;
> + /* TODO: Additional members to be added when PM is considered */
> +};
> +
> struct omap_video_timings {
> /* Unit: pixels */
> u16 x_res;
Kevin
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