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| author | Kristoffer Ericson <kristoffer.ericson@gmail.com> | 2008-10-15 22:03:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-16 11:21:45 -0700 |
| commit | 0b178883b36e6f522e4a7019bf5a147daf521a01 (patch) | |
| tree | 2f9051da715044d4aa00b843eb6bef2b887d5659 | |
| parent | 4d31a2b74c6d063362ae10ce3be3e80d8713bf23 (diff) | |
| download | linux-0b178883b36e6f522e4a7019bf5a147daf521a01.tar.bz2 | |
fbdev: allow more chip revisions in Epson s1d13... video driver
The Epson s1d13xxx hardware is common in many handhelds, but our driver is
currently locked to a single chip revision. This patch adds an array of
known to work revisions (which can be extended).
[akpm@linux-foundation.org: cleanups]
Signed-off-by: Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
Acked-by: Thibaut Varène <varenet@parisc-linux.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/video/s1d13xxxfb.c | 23 | ||||
| -rw-r--r-- | include/video/s1d13xxxfb.h | 3 |
2 files changed, 21 insertions, 5 deletions
diff --git a/drivers/video/s1d13xxxfb.c b/drivers/video/s1d13xxxfb.c index b829dc7c5edf..a7b01d2724b5 100644 --- a/drivers/video/s1d13xxxfb.c +++ b/drivers/video/s1d13xxxfb.c @@ -50,6 +50,11 @@ #define dbg(fmt, args...) do { } while (0) #endif +static const int __devinitconst s1d13xxxfb_revisions[] = { + S1D13506_CHIP_REV, /* Rev.4 on HP Jornada 7xx S1D13506 */ + S1D13806_CHIP_REV, /* Rev.7 on .. */ +}; + /* * Here we define the default struct fb_fix_screeninfo */ @@ -538,6 +543,7 @@ s1d13xxxfb_probe(struct platform_device *pdev) struct fb_info *info; struct s1d13xxxfb_pdata *pdata = NULL; int ret = 0; + int i; u8 revision; dbg("probe called: device is %p\n", pdev); @@ -607,10 +613,19 @@ s1d13xxxfb_probe(struct platform_device *pdev) goto bail; } - revision = s1d13xxxfb_readreg(default_par, S1DREG_REV_CODE); - if ((revision >> 2) != S1D_CHIP_REV) { - printk(KERN_INFO PFX "chip not found: %i\n", (revision >> 2)); - ret = -ENODEV; + revision = s1d13xxxfb_readreg(default_par, S1DREG_REV_CODE) >> 2; + + ret = -ENODEV; + + for (i = 0; i < ARRAY_SIZE(s1d13xxxfb_revisions); i++) { + if (revision == s1d13xxxfb_revisions[i]) + ret = 0; + } + + if (!ret) + printk(KERN_INFO PFX "chip revision %i\n", revision); + else { + printk(KERN_INFO PFX "unknown chip revision %i\n", revision); goto bail; } diff --git a/include/video/s1d13xxxfb.h b/include/video/s1d13xxxfb.h index c99d261df8f7..fe41b8407946 100644 --- a/include/video/s1d13xxxfb.h +++ b/include/video/s1d13xxxfb.h @@ -14,7 +14,8 @@ #define S1D13XXXFB_H #define S1D_PALETTE_SIZE 256 -#define S1D_CHIP_REV 7 /* expected chip revision number for s1d13806 */ +#define S1D13506_CHIP_REV 4 /* expected chip revision number for s1d13506 */ +#define S1D13806_CHIP_REV 7 /* expected chip revision number for s1d13806 */ #define S1D_FBID "S1D13806" #define S1D_DEVICENAME "s1d13806fb" |