linux-kernel - [PATCH 04/10] fbdev: imxfb: replace some magic numbers with constants

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Date:   Sat, 11 Nov 2023 11:41:53 +0100
From:   Dario Binacchi <dario.binacchi@...rulasolutions.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-amarula@...rulasolutions.com,
        Dario Binacchi <dario.binacchi@...rulasolutions.com>,
        Fabio Estevam <festevam@...il.com>,
        Helge Deller <deller@....de>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-fbdev@...r.kernel.org
Subject: [PATCH 04/10] fbdev: imxfb: replace some magic numbers with constants

The patch gets rid of magic numbers replacing them with appropriate
macros.

Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>
---

 drivers/video/fbdev/imxfb.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c
index b7ef43a7930a..485e57fa9389 100644
--- a/drivers/video/fbdev/imxfb.c
+++ b/drivers/video/fbdev/imxfb.c
@@ -89,6 +89,7 @@ struct imx_fb_videomode {
 #define PCR_BPIX_12	4
 #define PCR_BPIX_16	5
 #define PCR_BPIX_18	6
+#define PCR_PCD_MASK	GENMASK(5, 0)
 
 #define LCDC_HCR	0x1C
 #define HCR_H_WIDTH_MASK	GENMASK(31, 26)
@@ -414,8 +415,8 @@ static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 
 	pcr = (unsigned int)tmp;
 
-	if (--pcr > 0x3F) {
-		pcr = 0x3F;
+	if (--pcr > PCR_PCD_MASK) {
+		pcr = PCR_PCD_MASK;
 		printk(KERN_WARNING "Must limit pixel clock to %luHz\n",
 				lcd_clk / pcr);
 	}
@@ -444,7 +445,7 @@ static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 	}
 
 	/* add sync polarities */
-	pcr |= imxfb_mode->pcr & ~(0x3f | (7 << 25));
+	pcr |= imxfb_mode->pcr & ~(PCR_PCD_MASK | PCR_BPIX_MASK);
 
 	fbi->pcr = pcr;
 	/*
-- 
2.42.0