drm: omapdrm: Simplify platform registration

Currently, calls into each file are used to register the various
platform drivers. Change this to a table of pointers to platform_driver
structs to allow using platform_register_drivers.

Signed-off-by: Andrew F. Davis <[e-mail]>

drivers/gpu/drm/omapdrm/dss/core.c

···
 #include "dss.h"
 
 /* INIT */
-static int (*dss_output_drv_reg_funcs[])(void) __initdata = {
-	dss_init_platform_driver,
-	dispc_init_platform_driver,
+static struct platform_driver * const omap_dss_drivers[] = {
+	&omap_dsshw_driver,
+	&omap_dispchw_driver,
 #ifdef CONFIG_OMAP2_DSS_DSI
-	dsi_init_platform_driver,
+	&omap_dsihw_driver,
 #endif
 #ifdef CONFIG_OMAP2_DSS_VENC
-	venc_init_platform_driver,
+	&omap_venchw_driver,
 #endif
 #ifdef CONFIG_OMAP4_DSS_HDMI
-	hdmi4_init_platform_driver,
+	&omapdss_hdmi4hw_driver,
 #endif
 #ifdef CONFIG_OMAP5_DSS_HDMI
-	hdmi5_init_platform_driver,
+	&omapdss_hdmi5hw_driver,
 #endif
-};
-
-static void (*dss_output_drv_unreg_funcs[])(void) = {
-#ifdef CONFIG_OMAP5_DSS_HDMI
-	hdmi5_uninit_platform_driver,
-#endif
-#ifdef CONFIG_OMAP4_DSS_HDMI
-	hdmi4_uninit_platform_driver,
-#endif
-#ifdef CONFIG_OMAP2_DSS_VENC
-	venc_uninit_platform_driver,
-#endif
-#ifdef CONFIG_OMAP2_DSS_DSI
-	dsi_uninit_platform_driver,
-#endif
-	dispc_uninit_platform_driver,
-	dss_uninit_platform_driver,
 };
 
 static struct platform_device *omap_drm_device;
···
 static int __init omap_dss_init(void)
 {
 	int r;
-	int i;
 
-	for (i = 0; i < ARRAY_SIZE(dss_output_drv_reg_funcs); ++i) {
-		r = dss_output_drv_reg_funcs[i]();
-		if (r)
-			goto err_reg;
-	}
+	r = platform_register_drivers(omap_dss_drivers,
+				      ARRAY_SIZE(omap_dss_drivers));
+	if (r)
+		goto err_reg;
 
 	omap_drm_device = platform_device_register_simple("omapdrm", 0, NULL, 0);
 	if (IS_ERR(omap_drm_device)) {
···
 	return 0;
 
 err_reg:
-	for (i = ARRAY_SIZE(dss_output_drv_reg_funcs) - i;
-			i < ARRAY_SIZE(dss_output_drv_reg_funcs);
-			++i)
-		dss_output_drv_unreg_funcs[i]();
+	platform_unregister_drivers(omap_dss_drivers,
+				    ARRAY_SIZE(omap_dss_drivers));
 
 	return r;
 }
 
 static void __exit omap_dss_exit(void)
 {
-	int i;
-
 	platform_device_unregister(omap_drm_device);
 
-	for (i = 0; i < ARRAY_SIZE(dss_output_drv_unreg_funcs); ++i)
-		dss_output_drv_unreg_funcs[i]();
+	platform_unregister_drivers(omap_dss_drivers,
+				    ARRAY_SIZE(omap_dss_drivers));
 }
 
 module_init(omap_dss_init);

drivers/gpu/drm/omapdrm/dss/dispc.c

···
 	.runtime_resume = dispc_runtime_resume,
 };
 
-static struct platform_driver omap_dispchw_driver = {
+struct platform_driver omap_dispchw_driver = {
 	.probe		= dispc_probe,
 	.remove         = dispc_remove,
 	.driver         = {
···
 		.suppress_bind_attrs = true,
 	},
 };
-
-int __init dispc_init_platform_driver(void)
-{
-	return platform_driver_register(&omap_dispchw_driver);
-}
-
-void dispc_uninit_platform_driver(void)
-{
-	platform_driver_unregister(&omap_dispchw_driver);
-}

drivers/gpu/drm/omapdrm/dss/dsi.c

···
 	.runtime_resume = dsi_runtime_resume,
 };
 
-static struct platform_driver omap_dsihw_driver = {
+struct platform_driver omap_dsihw_driver = {
 	.probe		= dsi_probe,
 	.remove		= dsi_remove,
 	.driver         = {
···
 		.suppress_bind_attrs = true,
 	},
 };
-
-int __init dsi_init_platform_driver(void)
-{
-	return platform_driver_register(&omap_dsihw_driver);
-}
-
-void dsi_uninit_platform_driver(void)
-{
-	platform_driver_unregister(&omap_dsihw_driver);
-}

drivers/gpu/drm/omapdrm/dss/dss.c

···
 	.runtime_resume = dss_runtime_resume,
 };
 
-static struct platform_driver omap_dsshw_driver = {
+struct platform_driver omap_dsshw_driver = {
 	.probe		= dss_probe,
 	.remove		= dss_remove,
 	.shutdown	= dss_shutdown,
···
 		.suppress_bind_attrs = true,
 	},
 };
-
-int __init dss_init_platform_driver(void)
-{
-	return platform_driver_register(&omap_dsshw_driver);
-}
-
-void dss_uninit_platform_driver(void)
-{
-	platform_driver_unregister(&omap_dsshw_driver);
-}

drivers/gpu/drm/omapdrm/dss/dss.h

···
 }
 #endif /* CONFIG_OMAP2_DSS_DEBUGFS */
 
-int dss_init_platform_driver(void) __init;
-void dss_uninit_platform_driver(void);
-
 int dss_runtime_get(void);
 void dss_runtime_put(void);
 
···
 struct dentry;
 struct file_operations;
 
-int dsi_init_platform_driver(void) __init;
-void dsi_uninit_platform_driver(void);
-
 void dsi_dump_clocks(struct seq_file *s);
 
 void dsi_irq_handler(void);
···
 #endif
 
 /* DISPC */
-int dispc_init_platform_driver(void) __init;
-void dispc_uninit_platform_driver(void);
 void dispc_dump_clocks(struct seq_file *s);
 
 int dispc_runtime_get(void);
···
 int dispc_wb_setup(const struct omap_dss_writeback_info *wi,
 		bool mem_to_mem, const struct videomode *vm);
 
-/* VENC */
-int venc_init_platform_driver(void) __init;
-void venc_uninit_platform_driver(void);
-
-/* HDMI */
-int hdmi4_init_platform_driver(void) __init;
-void hdmi4_uninit_platform_driver(void);
-
-int hdmi5_init_platform_driver(void) __init;
-void hdmi5_uninit_platform_driver(void);
-
-
 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
 static inline void dss_collect_irq_stats(u32 irqstatus, unsigned *irq_arr)
 {
···
 int dss_pll_write_config_type_b(struct dss_pll *pll,
 		const struct dss_pll_clock_info *cinfo);
 int dss_pll_wait_reset_done(struct dss_pll *pll);
+
+extern struct platform_driver omap_dsshw_driver;
+extern struct platform_driver omap_dispchw_driver;
+#ifdef CONFIG_OMAP2_DSS_DSI
+extern struct platform_driver omap_dsihw_driver;
+#endif
+#ifdef CONFIG_OMAP2_DSS_VENC
+extern struct platform_driver omap_venchw_driver;
+#endif
+#ifdef CONFIG_OMAP4_DSS_HDMI
+extern struct platform_driver omapdss_hdmi4hw_driver;
+#endif
+#ifdef CONFIG_OMAP5_DSS_HDMI
+extern struct platform_driver omapdss_hdmi5hw_driver;
+#endif
 
 #endif

drivers/gpu/drm/omapdrm/dss/hdmi4.c

···
 	{},
 };
 
-static struct platform_driver omapdss_hdmihw_driver = {
+struct platform_driver omapdss_hdmi4hw_driver = {
 	.probe		= hdmi4_probe,
 	.remove		= hdmi4_remove,
 	.driver         = {
···
 		.suppress_bind_attrs = true,
 	},
 };
-
-int __init hdmi4_init_platform_driver(void)
-{
-	return platform_driver_register(&omapdss_hdmihw_driver);
-}
-
-void hdmi4_uninit_platform_driver(void)
-{
-	platform_driver_unregister(&omapdss_hdmihw_driver);
-}

drivers/gpu/drm/omapdrm/dss/hdmi5.c

···
 	{},
 };
 
-static struct platform_driver omapdss_hdmihw_driver = {
+struct platform_driver omapdss_hdmi5hw_driver = {
 	.probe		= hdmi5_probe,
 	.remove		= hdmi5_remove,
 	.driver         = {
···
 		.suppress_bind_attrs = true,
 	},
 };
-
-int __init hdmi5_init_platform_driver(void)
-{
-	return platform_driver_register(&omapdss_hdmihw_driver);
-}
-
-void hdmi5_uninit_platform_driver(void)
-{
-	platform_driver_unregister(&omapdss_hdmihw_driver);
-}

drivers/gpu/drm/omapdrm/dss/venc.c

···
 	{},
 };
 
-static struct platform_driver omap_venchw_driver = {
+struct platform_driver omap_venchw_driver = {
 	.probe		= venc_probe,
 	.remove		= venc_remove,
 	.driver         = {
···
 		.suppress_bind_attrs = true,
 	},
 };
-
-int __init venc_init_platform_driver(void)
-{
-	return platform_driver_register(&omap_venchw_driver);
-}
-
-void venc_uninit_platform_driver(void)
-{
-	platform_driver_unregister(&omap_venchw_driver);
-}