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From:   Janusz Krzysztofik <jmkrzyszt@gmail.com>
To:     Tony Lindgren <tony@atomide.com>
Cc:     Paul Walmsley <paul@pwsan.com>,
        Aaro Koskinen <aaro.koskinen@iki.fi>,
        Alan Stern <stern@rowland.harvard.edu>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Helge Deller <deller@gmx.de>, linux-omap@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org,
        linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        Janusz Krzysztofik <jmkrzyszt@gmail.com>
Subject: [RFC PATCH 3/4] ARM: OMAP1: Prepare for conversion of OMAP1 clocks to CCF
Date:   Fri, 11 Mar 2022 00:33:06 +0100
Message-Id: <20220310233307.99220-4-jmkrzyszt@gmail.com>
In-Reply-To: <20220310233307.99220-1-jmkrzyszt@gmail.com>
References: <20220310233307.99220-1-jmkrzyszt@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
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In preparation for conversion of OMAP1 clocks to common clock framework,
identify users of those clocks which don't call clk_prepare/unprepare()
and update them to call clk_prepare_enable/clk_disable_unprepare() instead
of just clk_enable/disable(), as required by CCF implementation of clock
API.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
---
 arch/arm/mach-omap1/mcbsp.c     | 8 ++++----
 arch/arm/mach-omap1/ocpi.c      | 4 ++--
 arch/arm/mach-omap1/serial.c    | 6 +++---
 arch/arm/mach-omap1/timer32k.c  | 2 +-
 drivers/usb/host/ohci-omap.c    | 8 ++++----
 drivers/video/fbdev/omap/lcdc.c | 6 +++---
 6 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/arch/arm/mach-omap1/mcbsp.c b/arch/arm/mach-omap1/mcbsp.c
index f36c34f47f11..3ec2badff6af 100644
--- a/arch/arm/mach-omap1/mcbsp.c
+++ b/arch/arm/mach-omap1/mcbsp.c
@@ -44,8 +44,8 @@ static void omap1_mcbsp_request(unsigned int id)
 			api_clk = clk_get(NULL, "api_ck");
 			dsp_clk = clk_get(NULL, "dsp_ck");
 			if (!IS_ERR(api_clk) && !IS_ERR(dsp_clk)) {
-				clk_enable(api_clk);
-				clk_enable(dsp_clk);
+				clk_prepare_enable(api_clk);
+				clk_prepare_enable(dsp_clk);
 
 				/*
 				 * DSP external peripheral reset
@@ -63,11 +63,11 @@ static void omap1_mcbsp_free(unsigned int id)
 	if (id == 0 || id == 2) {
 		if (--dsp_use == 0) {
 			if (!IS_ERR(api_clk)) {
-				clk_disable(api_clk);
+				clk_disable_unprepare(api_clk);
 				clk_put(api_clk);
 			}
 			if (!IS_ERR(dsp_clk)) {
-				clk_disable(dsp_clk);
+				clk_disable_unprepare(dsp_clk);
 				clk_put(dsp_clk);
 			}
 		}
diff --git a/arch/arm/mach-omap1/ocpi.c b/arch/arm/mach-omap1/ocpi.c
index 380ea2de58c1..03cc48024fd6 100644
--- a/arch/arm/mach-omap1/ocpi.c
+++ b/arch/arm/mach-omap1/ocpi.c
@@ -73,7 +73,7 @@ static int __init omap_ocpi_init(void)
 	if (IS_ERR(ocpi_ck))
 		return PTR_ERR(ocpi_ck);
 
-	clk_enable(ocpi_ck);
+	clk_prepare_enable(ocpi_ck);
 	ocpi_enable();
 	pr_info("OMAP OCPI interconnect driver loaded\n");
 
@@ -87,7 +87,7 @@ static void __exit omap_ocpi_exit(void)
 	if (!cpu_is_omap16xx())
 		return;
 
-	clk_disable(ocpi_ck);
+	clk_disable_unprepare(ocpi_ck);
 	clk_put(ocpi_ck);
 }
 
diff --git a/arch/arm/mach-omap1/serial.c b/arch/arm/mach-omap1/serial.c
index 9eb591fbfd89..5f591a836ab5 100644
--- a/arch/arm/mach-omap1/serial.c
+++ b/arch/arm/mach-omap1/serial.c
@@ -141,7 +141,7 @@ void __init omap_serial_init(void)
 			if (IS_ERR(uart1_ck))
 				printk("Could not get uart1_ck\n");
 			else {
-				clk_enable(uart1_ck);
+				clk_prepare_enable(uart1_ck);
 				if (cpu_is_omap15xx())
 					clk_set_rate(uart1_ck, 12000000);
 			}
@@ -151,7 +151,7 @@ void __init omap_serial_init(void)
 			if (IS_ERR(uart2_ck))
 				printk("Could not get uart2_ck\n");
 			else {
-				clk_enable(uart2_ck);
+				clk_prepare_enable(uart2_ck);
 				if (cpu_is_omap15xx())
 					clk_set_rate(uart2_ck, 12000000);
 				else
@@ -163,7 +163,7 @@ void __init omap_serial_init(void)
 			if (IS_ERR(uart3_ck))
 				printk("Could not get uart3_ck\n");
 			else {
-				clk_enable(uart3_ck);
+				clk_prepare_enable(uart3_ck);
 				if (cpu_is_omap15xx())
 					clk_set_rate(uart3_ck, 12000000);
 			}
diff --git a/arch/arm/mach-omap1/timer32k.c b/arch/arm/mach-omap1/timer32k.c
index 780fdf03c3ce..049c7b7f28c4 100644
--- a/arch/arm/mach-omap1/timer32k.c
+++ b/arch/arm/mach-omap1/timer32k.c
@@ -180,7 +180,7 @@ int __init omap_32k_timer_init(void)
 
 		sync32k_ick = clk_get(NULL, "omap_32ksync_ick");
 		if (!IS_ERR(sync32k_ick))
-			clk_enable(sync32k_ick);
+			clk_prepare_enable(sync32k_ick);
 
 		ret = omap_init_clocksource_32k(base);
 	}
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index 45dcf8292072..f09d6871499d 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -58,13 +58,13 @@ static struct hc_driver __read_mostly ohci_omap_hc_driver;
 static void omap_ohci_clock_power(struct ohci_omap_priv *priv, int on)
 {
 	if (on) {
-		clk_enable(priv->usb_dc_ck);
-		clk_enable(priv->usb_host_ck);
+		clk_prepare_enable(priv->usb_dc_ck);
+		clk_prepare_enable(priv->usb_host_ck);
 		/* guesstimate for T5 == 1x 32K clock + APLL lock time */
 		udelay(100);
 	} else {
-		clk_disable(priv->usb_host_ck);
-		clk_disable(priv->usb_dc_ck);
+		clk_disable_unprepare(priv->usb_host_ck);
+		clk_disable_unprepare(priv->usb_dc_ck);
 	}
 }
 
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);
 }
 
-- 
2.35.1