diff options
| author | Michael Minnick <michael.minnick@freescale.com> | 2012-10-09 18:06:31 -0500 |
|---|---|---|
| committer | Michael Minnick <michael.minnick@freescale.com> | 2012-10-12 11:32:15 -0500 |
| commit | 76f16bc9bc2bad490094f88b34fc1c3fda7e915f (patch) | |
| tree | df471daabef8d9dadca5d158d9c1addbe7b42be9 /drivers | |
| parent | a311ef8c8f9845d06d65c03c0a596df6cb10d3b7 (diff) | |
ENGR00229290 EPDC: MX6: Adjust number of LUTs for 5-bit waveform
When a 5-bit waveform is loaded, the maximum number of available
LUTs is 16. The LUT allocator must account for this.
Note that 5-bit waveform loading is currently not supported in the
driver. However, this fix makes sure the LUT allocator is correct
when 5-bit support is added.
Signed-off-by: Michael Minnick <michael.minnick@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/mxc/mxc_epdc_fb.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/video/mxc/mxc_epdc_fb.c b/drivers/video/mxc/mxc_epdc_fb.c index b702788ae823..38a183c8d861 100644 --- a/drivers/video/mxc/mxc_epdc_fb.c +++ b/drivers/video/mxc/mxc_epdc_fb.c @@ -735,18 +735,24 @@ static int epdc_choose_next_lut(int rev, int *next_lut) { u64 luts_status, unprocessed_luts; bool next_lut_found = false; + /* Available LUTs are reduced to 16 in 5-bit waveform mode */ + u32 format_p5n = __raw_readl(EPDC_FORMAT) & + EPDC_FORMAT_BUF_PIXEL_FORMAT_P5N; luts_status = __raw_readl(EPDC_STATUS_LUTS); - if (rev < 20) + if ((rev < 20) || format_p5n) luts_status &= 0xFFFF; else luts_status |= ((u64)__raw_readl(EPDC_STATUS_LUTS2) << 32); - if (rev < 20) + if (rev < 20) { unprocessed_luts = __raw_readl(EPDC_IRQ) & 0xFFFF; - else + } else { unprocessed_luts = __raw_readl(EPDC_IRQ1) | ((u64)__raw_readl(EPDC_IRQ2) << 32); + if (format_p5n) + unprocessed_luts &= 0xFFFF; + } while (!next_lut_found) { /* @@ -762,7 +768,7 @@ static int epdc_choose_next_lut(int rev, int *next_lut) */ *next_lut = fls64(luts_status); - if (rev < 20) { + if ((rev < 20) || format_p5n) { if (*next_lut > 15) *next_lut = ffz(luts_status); } else { |