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authorFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2010-09-19 00:20:55 -0400
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2010-09-23 22:15:23 -0400
commitdd7a0b08cd921763e570f693ecc4816aa2f1a3fd (patch)
tree506b7a797e8f20cd21fa9518aa45e23a5553d36d /drivers/video
parent2e1abbdd1dbc49e16eabd13e8b2458ee48e7b560 (diff)
viafb: add a mapping of supported output devices
This patch maps supported output devices to IGP versions. This list may contain errors as most of it is derived of the driver source but it should be correct enough to provide a good help. The devices are exported via a proc entry in the same format as those showing the output devices per IGA. Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Acked-by: Jonathan Corbet <corbet@lwn.net> Cc: Joseph Chan <JosephChan@via.com.tw> Cc: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/via/viafbdev.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c
index 164c6ea603d2..50f486d9b087 100644
--- a/drivers/video/via/viafbdev.c
+++ b/drivers/video/via/viafbdev.c
@@ -56,6 +56,31 @@ static int viafb_pan_display(struct fb_var_screeninfo *var,
56 56
57static struct fb_ops viafb_ops; 57static struct fb_ops viafb_ops;
58 58
59/* supported output devices on each IGP
60 * only CX700, VX800, VX855 were documented
61 * VIA_CRT should be everywhere
62 * VIA_6C can be onle pre-CX700 (probably only on CLE266) as 6C is used for PLL
63 * source selection on CX700 and later
64 * K400 seems to support VIA_96, VIA_DVP1, VIA_LVDS{1,2} as in viamode.c
65 */
66static const u32 supported_odev_map[] = {
67 [UNICHROME_CLE266] = VIA_CRT | VIA_6C | VIA_93,
68 [UNICHROME_K400] = VIA_CRT | VIA_96 | VIA_DVP1 | VIA_LVDS1
69 | VIA_LVDS2,
70 [UNICHROME_K800] = VIA_CRT | VIA_96 | VIA_DVP1 | VIA_LVDS1
71 | VIA_LVDS2,
72 [UNICHROME_PM800] = VIA_CRT | VIA_96 | VIA_DVP1 | VIA_LVDS1
73 | VIA_LVDS2,
74 [UNICHROME_CN700] = VIA_CRT | VIA_96 | VIA_DVP1 | VIA_LVDS1
75 | VIA_LVDS2,
76 [UNICHROME_CX700] = VIA_CRT | VIA_DVP1 | VIA_LVDS1 | VIA_LVDS2,
77 [UNICHROME_CN750] = VIA_CRT | VIA_DVP1 | VIA_LVDS1 | VIA_LVDS2,
78 [UNICHROME_K8M890] = VIA_CRT | VIA_DVP1 | VIA_LVDS1 | VIA_LVDS2,
79 [UNICHROME_P4M890] = VIA_CRT | VIA_DVP1 | VIA_LVDS1 | VIA_LVDS2,
80 [UNICHROME_P4M900] = VIA_CRT | VIA_DVP1 | VIA_LVDS1 | VIA_LVDS2,
81 [UNICHROME_VX800] = VIA_CRT | VIA_DVP1 | VIA_LVDS1 | VIA_LVDS2,
82 [UNICHROME_VX855] = VIA_CRT | VIA_DVP1 | VIA_LVDS1 | VIA_LVDS2,
83};
59 84
60static void viafb_fill_var_color_info(struct fb_var_screeninfo *var, u8 depth) 85static void viafb_fill_var_color_info(struct fb_var_screeninfo *var, u8 depth)
61{ 86{
@@ -1433,6 +1458,26 @@ static const struct file_operations viafb_vt1636_proc_fops = {
1433 1458
1434#endif /* CONFIG_FB_VIA_DIRECT_PROCFS */ 1459#endif /* CONFIG_FB_VIA_DIRECT_PROCFS */
1435 1460
1461static int viafb_sup_odev_proc_show(struct seq_file *m, void *v)
1462{
1463 via_odev_to_seq(m, supported_odev_map[
1464 viaparinfo->shared->chip_info.gfx_chip_name]);
1465 return 0;
1466}
1467
1468static int viafb_sup_odev_proc_open(struct inode *inode, struct file *file)
1469{
1470 return single_open(file, viafb_sup_odev_proc_show, NULL);
1471}
1472
1473static const struct file_operations viafb_sup_odev_proc_fops = {
1474 .owner = THIS_MODULE,
1475 .open = viafb_sup_odev_proc_open,
1476 .read = seq_read,
1477 .llseek = seq_lseek,
1478 .release = single_release,
1479};
1480
1436static ssize_t odev_update(const char __user *buffer, size_t count, u32 *odev) 1481static ssize_t odev_update(const char __user *buffer, size_t count, u32 *odev)
1437{ 1482{
1438 char buf[64], *ptr = buf; 1483 char buf[64], *ptr = buf;
@@ -1561,6 +1606,8 @@ static void viafb_init_proc(struct viafb_shared *shared)
1561 &viafb_vt1636_proc_fops); 1606 &viafb_vt1636_proc_fops);
1562#endif /* CONFIG_FB_VIA_DIRECT_PROCFS */ 1607#endif /* CONFIG_FB_VIA_DIRECT_PROCFS */
1563 1608
1609 proc_create("supported_output_devices", 0, viafb_entry,
1610 &viafb_sup_odev_proc_fops);
1564 iga1_entry = proc_mkdir("iga1", viafb_entry); 1611 iga1_entry = proc_mkdir("iga1", viafb_entry);
1565 shared->iga1_proc_entry = iga1_entry; 1612 shared->iga1_proc_entry = iga1_entry;
1566 proc_create("output_devices", 0, iga1_entry, 1613 proc_create("output_devices", 0, iga1_entry,
@@ -1584,6 +1631,7 @@ static void viafb_remove_proc(struct viafb_shared *shared)
1584 remove_proc_entry("iga2", viafb_entry); 1631 remove_proc_entry("iga2", viafb_entry);
1585 remove_proc_entry("output_devices", iga1_entry); 1632 remove_proc_entry("output_devices", iga1_entry);
1586 remove_proc_entry("iga1", viafb_entry); 1633 remove_proc_entry("iga1", viafb_entry);
1634 remove_proc_entry("supported_output_devices", viafb_entry);
1587 1635
1588#ifdef CONFIG_FB_VIA_DIRECT_PROCFS 1636#ifdef CONFIG_FB_VIA_DIRECT_PROCFS
1589 remove_proc_entry("dvp0", viafb_entry);/* parent dir */ 1637 remove_proc_entry("dvp0", viafb_entry);/* parent dir */