diff options
| author | Krzysztof Helt <krzysztof.h1@wp.pl> | 2007-05-08 00:39:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 11:15:32 -0700 |
| commit | e5d809d774fc8aa76899bde3235afb046728feed (patch) | |
| tree | 853cbef657a2a4d9d543a09971ba2aa6e3ba31ad /drivers/video/pm2fb.c | |
| parent | f1c15f938d810b5eb38c85a28e5e9d2af07d135a (diff) | |
| download | lwn-e5d809d774fc8aa76899bde3235afb046728feed.tar.gz lwn-e5d809d774fc8aa76899bde3235afb046728feed.zip | |
pm2fb: Permedia 2V memory clock setting
Permedia 2V uses its own registers to set a memory clock. The
patch adds these registers and uses them in the set_memclock()
function.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/pm2fb.c')
| -rw-r--r-- | drivers/video/pm2fb.c | 52 |
1 files changed, 37 insertions, 15 deletions
diff --git a/drivers/video/pm2fb.c b/drivers/video/pm2fb.c index 2c7dccbd5250..6f634e3ae60d 100644 --- a/drivers/video/pm2fb.c +++ b/drivers/video/pm2fb.c @@ -462,21 +462,43 @@ static void set_memclock(struct pm2fb_par* par, u32 clk) int i; unsigned char m, n, p; - pm2_mnp(clk, &m, &n, &p); - WAIT_FIFO(par, 10); - pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_3, 6); - wmb(); - pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_1, m); - pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_2, n); - wmb(); - pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_3, 8|p); - wmb(); - pm2_RDAC_RD(par, PM2I_RD_MEMORY_CLOCK_STATUS); - rmb(); - for (i = 256; - i && !(pm2_RD(par, PM2R_RD_INDEXED_DATA) & PM2F_PLL_LOCKED); - i--) - ; + switch (par->type) { + case PM2_TYPE_PERMEDIA2V: + pm2v_mnp(clk/2, &m, &n, &p); + WAIT_FIFO(par, 8); + pm2_WR(par, PM2VR_RD_INDEX_HIGH, PM2VI_RD_MCLK_CONTROL >> 8); + pm2v_RDAC_WR(par, PM2VI_RD_MCLK_CONTROL, 0); + wmb(); + pm2v_RDAC_WR(par, PM2VI_RD_MCLK_PRESCALE, m); + pm2v_RDAC_WR(par, PM2VI_RD_MCLK_FEEDBACK, n); + pm2v_RDAC_WR(par, PM2VI_RD_MCLK_POSTSCALE, p); + wmb(); + pm2v_RDAC_WR(par, PM2VI_RD_MCLK_CONTROL, 1); + rmb(); + for (i = 256; + i && !(pm2_RDAC_RD(par, PM2VI_RD_MCLK_CONTROL) & 2); + i--) + ; + pm2_WR(par, PM2VR_RD_INDEX_HIGH, 0); + break; + case PM2_TYPE_PERMEDIA2: + pm2_mnp(clk, &m, &n, &p); + WAIT_FIFO(par, 10); + pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_3, 6); + wmb(); + pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_1, m); + pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_2, n); + wmb(); + pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_3, 8|p); + wmb(); + pm2_RDAC_RD(par, PM2I_RD_MEMORY_CLOCK_STATUS); + rmb(); + for (i = 256; + i && !(pm2_RD(par, PM2R_RD_INDEXED_DATA) & PM2F_PLL_LOCKED); + i--) + ; + break; + } } static void set_pixclock(struct pm2fb_par* par, u32 clk) |