Author: gonzo
Date: Tue Jan 20 02:24:08 2015
New Revision: 277405
URL: https://svnweb.freebsd.org/changeset/base/277405
Log:
Properly clear IRQ status in order to fix "Spurious IRQ" message from AINT.
This register is not documented in TRM but that's what linux driver does
Modified:
head/sys/arm/ti/am335x/am335x_lcd.c
Modified: head/sys/arm/ti/am335x/am335x_lcd.c
==============================================================================
--- head/sys/arm/ti/am335x/am335x_lcd.c Mon Jan 19 22:18:00 2015
(r277404)
+++ head/sys/arm/ti/am335x/am335x_lcd.c Tue Jan 20 02:24:08 2015
(r277405)
@@ -150,6 +150,7 @@ __FBSDID("$FreeBSD$");
#define IRQ_SYNC_LOST (1 << 2)
#define IRQ_RASTER_DONE (1 << 1)
#define IRQ_FRAME_DONE (1 << 0)
+#define LCD_END_OF_INT_IND 0x68
#define LCD_CLKC_ENABLE 0x6C
#define CLKC_ENABLE_DMA (1 << 2)
#define CLKC_ENABLE_LDID (1 << 1)
@@ -397,6 +398,8 @@ am335x_lcd_intr(void *arg)
if (reg & IRQ_ACB) {
/* TODO: Handle ACB */
}
+
+ LCD_WRITE4(sc, LCD_END_OF_INT_IND, 0);
}
static int
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