1 files changed, 53 insertions, 0 deletions

diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c
index 03303232e543..e65edcea46eb 100644
--- a/drivers/video/via/hw.c
+++ b/drivers/video/via/hw.c
@@ -718,6 +718,16 @@ static struct rgbLUT palLUT_table[] = {
                                                                      0x00}
 };
 
+static struct via_device_mapping device_mapping[] = {
+        {VIA_6C, "6C"},
+        {VIA_93, "93"},
+        {VIA_96, "96"},
+        {VIA_CRT, "CRT"},
+        {VIA_DVP1, "DVP1"},
+        {VIA_LVDS1, "LVDS1"},
+        {VIA_LVDS2, "LVDS2"}
+};
+
 static void load_fix_bit_crtc_reg(void);
 static void __devinit init_gfx_chip_info(int chip_type);
 static void __devinit init_tmds_chip_info(void);
@@ -1026,6 +1036,49 @@ void via_set_source(u32 devices, u8 iga)
                 set_lvds2_source(iga);
 }
 
+u32 via_parse_odev(char *input, char **end)
+{
+        char *ptr = input;
+        u32 odev = 0;
+        bool next = true;
+        int i, len;
+
+        while (next) {
+                next = false;
+                for (i = 0; i < ARRAY_SIZE(device_mapping); i++) {
+                        len = strlen(device_mapping[i].name);
+                        if (!strncmp(ptr, device_mapping[i].name, len)) {
+                                odev |= device_mapping[i].device;
+                                ptr += len;
+                                if (*ptr == ',') {
+                                        ptr++;
+                                        next = true;
+                                }
+                        }
+                }
+        }
+
+        *end = ptr;
+        return odev;
+}
+
+void via_odev_to_seq(struct seq_file *m, u32 odev)
+{
+        int i, count = 0;
+
+        for (i = 0; i < ARRAY_SIZE(device_mapping); i++) {
+                if (odev & device_mapping[i].device) {
+                        if (count > 0)
+                                seq_putc(m, ',');
+
+                        seq_puts(m, device_mapping[i].name);
+                        count++;
+                }
+        }
+
+        seq_putc(m, '\n');
+}
+
 static void load_fix_bit_crtc_reg(void)
 {
         /* always set to 1 */