video: fbdev: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly. One tracking pointer was added.

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: David Lechner <david@lechnology.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jean Delvare <jdelvare@suse.de>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
[b.zolnierkie: ported it over pxa3xx_gcu changes]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

drivers/video/fbdev/aty/radeon_base.c

@@ -1454,9 +1454,9 @@ static void radeon_write_pll_regs(struct radeonfb_info *rinfo, struct radeon_reg
 /*
  * Timer function for delayed LVDS panel power up/down
  */
-static void radeon_lvds_timer_func(unsigned long data)
+static void radeon_lvds_timer_func(struct timer_list *t)
 {
-	struct radeonfb_info *rinfo = (struct radeonfb_info *)data;
+	struct radeonfb_info *rinfo = from_timer(rinfo, t, lvds_timer);
 
 	radeon_engine_idle();
 
@@ -2291,9 +2291,7 @@ static int radeonfb_pci_register(struct pci_dev *pdev,
 	rinfo->pdev = pdev;
 	
 	spin_lock_init(&rinfo->reg_lock);
-	init_timer(&rinfo->lvds_timer);
-	rinfo->lvds_timer.function = radeon_lvds_timer_func;
-	rinfo->lvds_timer.data = (unsigned long)rinfo;
+	timer_setup(&rinfo->lvds_timer, radeon_lvds_timer_func, 0);
 
 	c1 = ent->device >> 8;
 	c2 = ent->device & 0xff;

drivers/video/fbdev/core/fbcon.c

@@ -395,10 +395,10 @@ static void fb_flashcursor(struct work_struct *work)
 	console_unlock();
 }
 
-static void cursor_timer_handler(unsigned long dev_addr)
+static void cursor_timer_handler(struct timer_list *t)
 {
-	struct fb_info *info = (struct fb_info *) dev_addr;
-	struct fbcon_ops *ops = info->fbcon_par;
+	struct fbcon_ops *ops = from_timer(ops, t, cursor_timer);
+	struct fb_info *info = ops->info;
 
 	queue_work(system_power_efficient_wq, &info->queue);
 	mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
@@ -414,8 +414,7 @@ static void fbcon_add_cursor_timer(struct fb_info *info)
 		if (!info->queue.func)
 			INIT_WORK(&info->queue, fb_flashcursor);
 
-		setup_timer(&ops->cursor_timer, cursor_timer_handler,
-			    (unsigned long) info);
+		timer_setup(&ops->cursor_timer, cursor_timer_handler, 0);
 		mod_timer(&ops->cursor_timer, jiffies + ops->cur_blink_jiffies);
 		ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
 	}
@@ -714,6 +713,7 @@ static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
 
 	if (!err) {
 		ops->cur_blink_jiffies = HZ / 5;
+		ops->info = info;
 		info->fbcon_par = ops;
 
 		if (vc)

drivers/video/fbdev/core/fbcon.h

@@ -69,6 +69,7 @@ struct fbcon_ops {
 	struct timer_list cursor_timer; /* Cursor timer */
 	struct fb_cursor cursor_state;
 	struct display *p;
+	struct fb_info *info;
         int    currcon;	                /* Current VC. */
 	int    cur_blink_jiffies;
 	int    cursor_flash;

drivers/video/fbdev/omap/hwa742.c

@@ -474,7 +474,7 @@ static void auto_update_complete(void *data)
 			  jiffies + HWA742_AUTO_UPDATE_TIME);
 }
 
-static void hwa742_update_window_auto(unsigned long arg)
+static void hwa742_update_window_auto(struct timer_list *unused)
 {
 	LIST_HEAD(req_list);
 	struct hwa742_request *last;
@@ -1002,9 +1002,7 @@ static int hwa742_init(struct omapfb_device *fbdev, int ext_mode,
 	hwa742.auto_update_window.height = fbdev->panel->y_res;
 	hwa742.auto_update_window.format = 0;
 
-	init_timer(&hwa742.auto_update_timer);
-	hwa742.auto_update_timer.function = hwa742_update_window_auto;
-	hwa742.auto_update_timer.data = 0;
+	timer_setup(&hwa742.auto_update_timer, hwa742_update_window_auto, 0);
 
 	hwa742.prev_color_mode = -1;
 	hwa742.prev_flags = 0;

drivers/video/fbdev/omap2/omapfb/dss/dsi.c

@@ -3988,7 +3988,7 @@ static void dsi_update_screen_dispc(struct platform_device *dsidev)
 }
 
 #ifdef DSI_CATCH_MISSING_TE
-static void dsi_te_timeout(unsigned long arg)
+static void dsi_te_timeout(struct timer_list *unused)
 {
 	DSSERR("TE not received for 250ms!\n");
 }
@@ -5298,9 +5298,7 @@ static int dsi_bind(struct device *dev, struct device *master, void *data)
 			     dsi_framedone_timeout_work_callback);
 
 #ifdef DSI_CATCH_MISSING_TE
-	init_timer(&dsi->te_timer);
-	dsi->te_timer.function = dsi_te_timeout;
-	dsi->te_timer.data = 0;
+	timer_setup(&dsi->te_timer, dsi_te_timeout, 0);
 #endif
 
 	res = platform_get_resource_byname(dsidev, IORESOURCE_MEM, "proto");