From 9e8fc02528d531c922e75395b5a7037904445d4b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sigrid=20Solveig=20Hafl=C3=ADnud=C3=B3ttir?=
 <sigrid@ftrv.se>
Date: Mon, 8 Aug 2022 19:57:06 +0000
Subject: imx8: add aux/imx8pm with lcd brightness control

---
 sys/src/9/imx8/lcd.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'sys/src/9/imx8')

diff --git a/sys/src/9/imx8/lcd.c b/sys/src/9/imx8/lcd.c
index fbe0d65b4..1bedbbc4a 100644
--- a/sys/src/9/imx8/lcd.c
+++ b/sys/src/9/imx8/lcd.c
@@ -834,6 +834,19 @@ blankscreen(int blank)
 	gpioout(GPIO_PIN(1, 10), blank == 0);
 }
 
+static void
+lcdmeminit(void)
+{
+	Physseg seg;
+
+	memset(&seg, 0, sizeof seg);
+	seg.attr = SG_PHYSICAL | SG_DEVICE | SG_NOEXEC;
+	seg.name = "pwm2";
+	seg.pa = (uintptr)pwm2 - KZERO;
+	seg.size = BY2PG;
+	addphysseg(&seg);
+}
+
 void
 lcdinit(void)
 {
@@ -914,6 +927,9 @@ lcdinit(void)
 		goto out;
 	}
 
+	/* expose useful segment(s) to the userspace */
+	lcdmeminit();
+
 	/* start the pixel clock */
 	setclkrate("lcdif.pix_clk", "system_pll1_clk", mode.pixclk);
 	dpiinit(&mode);
-- 
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