X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=arch%2Farm%2Fmach-ixp4xx%2Fcommon.c;h=6b393691d0e898cdcc0b4aaebb6da5ab2469c470;hb=8995b161eb142b843094dd614b80e4cce1d66352;hp=6c396447c4e078d8ce7e1807c072edfc8c704bb7;hpb=6fbfddcb52d8d9fa2cd209f5ac2a1c87497d55b5;p=mirror_ubuntu-bionic-kernel.git

diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index 6c396447c4e0..6b393691d0e8 100644
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -20,6 +20,7 @@
 #include <linux/serial.h>
 #include <linux/sched.h>
 #include <linux/tty.h>
+#include <linux/platform_device.h>
 #include <linux/serial_core.h>
 #include <linux/bootmem.h>
 #include <linux/interrupt.h>
@@ -141,6 +142,8 @@ static int ixp4xx_set_irq_type(unsigned int irq, unsigned int type)
 	*int_reg &= ~(IXP4XX_GPIO_STYLE_CLEAR <<
 	    		(line * IXP4XX_GPIO_STYLE_SIZE));
 
+	*IXP4XX_GPIO_GPISR = (1 << line);
+
 	/* Set the new style */
 	*int_reg |= (int_style << (line * IXP4XX_GPIO_STYLE_SIZE));
 
@@ -168,7 +171,7 @@ static void ixp4xx_irq_ack(unsigned int irq)
 	int line = (irq < 32) ? irq2gpio[irq] : -1;
 
 	if (line >= 0)
-		gpio_line_isr_clear(line);
+		*IXP4XX_GPIO_GPISR = (1 << line);
 }
 
 /*
@@ -329,11 +332,27 @@ static struct platform_device *ixp46x_devices[] __initdata = {
 	&ixp46x_i2c_controller
 };
 
+unsigned long ixp4xx_exp_bus_size;
+
 void __init ixp4xx_sys_init(void)
 {
+	ixp4xx_exp_bus_size = SZ_16M;
+
 	if (cpu_is_ixp46x()) {
+		int region;
+
 		platform_add_devices(ixp46x_devices,
 				ARRAY_SIZE(ixp46x_devices));
+
+		for (region = 0; region < 7; region++) {
+			if((*(IXP4XX_EXP_REG(0x4 * region)) & 0x200)) {
+				ixp4xx_exp_bus_size = SZ_32M;
+				break;
+			}
+		}
 	}
+
+	printk("IXP4xx: Using %uMiB expansion bus window size\n",
+			ixp4xx_exp_bus_size >> 20);
 }