From 7ffaf6780ce604d31f2f1a131c6ae24e3e83db1b Mon Sep 17 00:00:00 2001
From: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Date: Sat, 2 Apr 2022 13:54:44 +0200
Subject: video: fbdev: omap: Make it CCF clk API compatible
Git-commit: 7e4920bf59cb085e148796e937a8e8212fd2bae0
Patch-mainline: v5.18-rc5
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

OMAP1 LCDC drivers now omit clk_prepare/unprepare() steps, not supported
by OMAP1 custom implementation of clock API.  However, non-CCF stubs of
those functions exist for use on such platforms until converted to CCF.

Update the drivers to be compatible with CCF implementation of clock API.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/video/fbdev/omap/hwa742.c | 6 +++---
 drivers/video/fbdev/omap/lcdc.c   | 6 +++---
 drivers/video/fbdev/omap/sossi.c  | 5 +++--
 3 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/video/fbdev/omap/hwa742.c b/drivers/video/fbdev/omap/hwa742.c
index b191bef22d98..9d9fe5c3a7a1 100644
--- a/drivers/video/fbdev/omap/hwa742.c
+++ b/drivers/video/fbdev/omap/hwa742.c
@@ -964,7 +964,7 @@ static int hwa742_init(struct omapfb_device *fbdev, int ext_mode,
 	if ((r = calc_extif_timings(ext_clk, &extif_mem_div)) < 0)
 		goto err3;
 	hwa742.extif->set_timings(&hwa742.reg_timings);
-	clk_enable(hwa742.sys_ck);
+	clk_prepare_enable(hwa742.sys_ck);
 
 	calc_hwa742_clk_rates(ext_clk, &sys_clk, &pix_clk);
 	if ((r = calc_extif_timings(sys_clk, &extif_mem_div)) < 0)
@@ -1023,7 +1023,7 @@ static int hwa742_init(struct omapfb_device *fbdev, int ext_mode,
 
 	return 0;
 err4:
-	clk_disable(hwa742.sys_ck);
+	clk_disable_unprepare(hwa742.sys_ck);
 err3:
 	hwa742.extif->cleanup();
 err2:
@@ -1037,7 +1037,7 @@ static void hwa742_cleanup(void)
 	hwa742_set_update_mode(OMAPFB_UPDATE_DISABLED);
 	hwa742.extif->cleanup();
 	hwa742.int_ctrl->cleanup();
-	clk_disable(hwa742.sys_ck);
+	clk_disable_unprepare(hwa742.sys_ck);
 }
 
 struct lcd_ctrl hwa742_ctrl = {
diff --git a/drivers/video/fbdev/omap/lcdc.c b/drivers/video/fbdev/omap/lcdc.c
index 7317c9aad677..97d20dc0d1d0 100644
--- a/drivers/video/fbdev/omap/lcdc.c
+++ b/drivers/video/fbdev/omap/lcdc.c
@@ -711,7 +711,7 @@ static int omap_lcdc_init(struct omapfb_device *fbdev, int ext_mode,
 		dev_err(fbdev->dev, "failed to adjust LCD rate\n");
 		goto fail1;
 	}
-	clk_enable(lcdc.lcd_ck);
+	clk_prepare_enable(lcdc.lcd_ck);
 
 	r = request_irq(OMAP_LCDC_IRQ, lcdc_irq_handler, 0, MODULE_NAME, fbdev);
 	if (r) {
@@ -746,7 +746,7 @@ static int omap_lcdc_init(struct omapfb_device *fbdev, int ext_mode,
 fail3:
 	free_irq(OMAP_LCDC_IRQ, lcdc.fbdev);
 fail2:
-	clk_disable(lcdc.lcd_ck);
+	clk_disable_unprepare(lcdc.lcd_ck);
 fail1:
 	clk_put(lcdc.lcd_ck);
 fail0:
@@ -760,7 +760,7 @@ static void omap_lcdc_cleanup(void)
 	free_fbmem();
 	omap_free_lcd_dma();
 	free_irq(OMAP_LCDC_IRQ, lcdc.fbdev);
-	clk_disable(lcdc.lcd_ck);
+	clk_disable_unprepare(lcdc.lcd_ck);
 	clk_put(lcdc.lcd_ck);
 }
 
diff --git a/drivers/video/fbdev/omap/sossi.c b/drivers/video/fbdev/omap/sossi.c
index 80ac67f27f0d..b9cb8b386627 100644
--- a/drivers/video/fbdev/omap/sossi.c
+++ b/drivers/video/fbdev/omap/sossi.c
@@ -598,7 +598,7 @@ static int sossi_init(struct omapfb_device *fbdev)
 	l &= ~CONF_SOSSI_RESET_R;
 	omap_writel(l, MOD_CONF_CTRL_1);
 
-	clk_enable(sossi.fck);
+	clk_prepare_enable(sossi.fck);
 	l = omap_readl(ARM_IDLECT2);
 	l &= ~(1 << 8);			/* DMACK_REQ */
 	omap_writel(l, ARM_IDLECT2);
@@ -649,7 +649,7 @@ static int sossi_init(struct omapfb_device *fbdev)
 	return 0;
 
 err:
-	clk_disable(sossi.fck);
+	clk_disable_unprepare(sossi.fck);
 	clk_put(sossi.fck);
 	return r;
 }
@@ -657,6 +657,7 @@ static int sossi_init(struct omapfb_device *fbdev)
 static void sossi_cleanup(void)
 {
 	omap_lcdc_free_dma_callback();
+	clk_unprepare(sossi.fck);
 	clk_put(sossi.fck);
 	iounmap(sossi.base);
 }
-- 
2.38.1