On 03/21/2012 12:39 PM, Tomi Valkeinen wrote:
> From 849c07b1fd3d9f23e8ed94436b6221f8652462c0 Mon Sep 17 00:00:00 2001
> From: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
> Date: Mon, 19 Mar 2012 15:05:02 +0200
> Subject: [PATCH] OMAPDSS: register dss drivers in module init
>
> We do the dss driver registration in a rather strange way: we have the
> higher level omapdss driver, and we use that driver's probe function to
> register the drivers for the rest of the dss devices.
>
> There doesn't seem to be any reason for that, and additionally the
> soon-to-be-merged patch "ARM: OMAP: omap_device: remove
> omap_device_parent" will break omapdss initialization with the current
> registration model.
>
> This patch changes the registration for all drivers to happen at the
> same place, in the init of the module.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Applied.
Thanks,
Florian Tobias Schandinat
> ---
> drivers/video/omap2/dss/core.c | 135 +++++++++++++++++++++++-----------------
> 1 files changed, 77 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/video/omap2/dss/core.c b/drivers/video/omap2/dss/core.c
> index 8613f86..e8a1207 100644
> --- a/drivers/video/omap2/dss/core.c
> +++ b/drivers/video/omap2/dss/core.c
> @@ -183,42 +183,6 @@ static int omap_dss_probe(struct platform_device *pdev)
> dss_init_overlay_managers(pdev);
> dss_init_overlays(pdev);
>
> - r = dss_init_platform_driver();
> - if (r) {
> - DSSERR("Failed to initialize DSS platform driver\n");
> - goto err_dss;
> - }
> -
> - r = dispc_init_platform_driver();
> - if (r) {
> - DSSERR("Failed to initialize dispc platform driver\n");
> - goto err_dispc;
> - }
> -
> - r = rfbi_init_platform_driver();
> - if (r) {
> - DSSERR("Failed to initialize rfbi platform driver\n");
> - goto err_rfbi;
> - }
> -
> - r = venc_init_platform_driver();
> - if (r) {
> - DSSERR("Failed to initialize venc platform driver\n");
> - goto err_venc;
> - }
> -
> - r = dsi_init_platform_driver();
> - if (r) {
> - DSSERR("Failed to initialize DSI platform driver\n");
> - goto err_dsi;
> - }
> -
> - r = hdmi_init_platform_driver();
> - if (r) {
> - DSSERR("Failed to initialize hdmi\n");
> - goto err_hdmi;
> - }
> -
> r = dss_initialize_debugfs();
> if (r)
> goto err_debugfs;
> @@ -246,18 +210,6 @@ static int omap_dss_probe(struct platform_device *pdev)
> err_register:
> dss_uninitialize_debugfs();
> err_debugfs:
> - hdmi_uninit_platform_driver();
> -err_hdmi:
> - dsi_uninit_platform_driver();
> -err_dsi:
> - venc_uninit_platform_driver();
> -err_venc:
> - dispc_uninit_platform_driver();
> -err_dispc:
> - rfbi_uninit_platform_driver();
> -err_rfbi:
> - dss_uninit_platform_driver();
> -err_dss:
>
> return r;
> }
> @@ -269,13 +221,6 @@ static int omap_dss_remove(struct platform_device *pdev)
>
> dss_uninitialize_debugfs();
>
> - hdmi_uninit_platform_driver();
> - dsi_uninit_platform_driver();
> - venc_uninit_platform_driver();
> - rfbi_uninit_platform_driver();
> - dispc_uninit_platform_driver();
> - dss_uninit_platform_driver();
> -
> dss_uninit_overlays(pdev);
> dss_uninit_overlay_managers(pdev);
>
> @@ -525,6 +470,80 @@ static int omap_dss_bus_register(void)
>
> /* INIT */
>
> +static int __init omap_dss_register_drivers(void)
> +{
> + int r;
> +
> + r = platform_driver_register(&omap_dss_driver);
> + if (r)
> + return r;
> +
> + r = dss_init_platform_driver();
> + if (r) {
> + DSSERR("Failed to initialize DSS platform driver\n");
> + goto err_dss;
> + }
> +
> + r = dispc_init_platform_driver();
> + if (r) {
> + DSSERR("Failed to initialize dispc platform driver\n");
> + goto err_dispc;
> + }
> +
> + r = rfbi_init_platform_driver();
> + if (r) {
> + DSSERR("Failed to initialize rfbi platform driver\n");
> + goto err_rfbi;
> + }
> +
> + r = venc_init_platform_driver();
> + if (r) {
> + DSSERR("Failed to initialize venc platform driver\n");
> + goto err_venc;
> + }
> +
> + r = dsi_init_platform_driver();
> + if (r) {
> + DSSERR("Failed to initialize DSI platform driver\n");
> + goto err_dsi;
> + }
> +
> + r = hdmi_init_platform_driver();
> + if (r) {
> + DSSERR("Failed to initialize hdmi\n");
> + goto err_hdmi;
> + }
> +
> + return 0;
> +
> +err_hdmi:
> + dsi_uninit_platform_driver();
> +err_dsi:
> + venc_uninit_platform_driver();
> +err_venc:
> + rfbi_uninit_platform_driver();
> +err_rfbi:
> + dispc_uninit_platform_driver();
> +err_dispc:
> + dss_uninit_platform_driver();
> +err_dss:
> + platform_driver_unregister(&omap_dss_driver);
> +
> + return r;
> +}
> +
> +static void __exit omap_dss_unregister_drivers(void)
> +{
> + hdmi_uninit_platform_driver();
> + dsi_uninit_platform_driver();
> + venc_uninit_platform_driver();
> + rfbi_uninit_platform_driver();
> + dispc_uninit_platform_driver();
> + dss_uninit_platform_driver();
> +
> + platform_driver_unregister(&omap_dss_driver);
> +}
> +
> #ifdef CONFIG_OMAP2_DSS_MODULE
> static void omap_dss_bus_unregister(void)
> {
> @@ -541,7 +560,7 @@ static int __init omap_dss_init(void)
> if (r)
> return r;
>
> - r = platform_driver_register(&omap_dss_driver);
> + r = omap_dss_register_drivers();
> if (r) {
> omap_dss_bus_unregister();
> return r;
> @@ -562,7 +581,7 @@ static void __exit omap_dss_exit(void)
> core.vdds_sdi_reg = NULL;
> }
>
> - platform_driver_unregister(&omap_dss_driver);
> + omap_dss_unregister_drivers();
>
> omap_dss_bus_unregister();
> }
> @@ -577,7 +596,7 @@ static int __init omap_dss_init(void)
>
> static int __init omap_dss_init2(void)
> {
> - return platform_driver_register(&omap_dss_driver);
> + return omap_dss_register_drivers();
> }
>
> core_initcall(omap_dss_init);
--
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