diff options
| author | Phil Edworthy <phil.edworthy@renesas.com> | 2009-09-15 12:00:30 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-09-15 21:08:22 +0900 |
| commit | a6f15ade97989d414e9bf33874c9d5d1f39808ec (patch) | |
| tree | 6738402bca402004d55b913f56c2671913756e83 /drivers/video/sh_mobile_lcdcfb.c | |
| parent | 9dd38819c2257375ea05bcb92b1f607a1d523c84 (diff) | |
video: sh_mobile_lcdcfb: use both register sets for display panning
Switch to using both register sets - side A and side B for display panning.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/video/sh_mobile_lcdcfb.c')
| -rw-r--r-- | drivers/video/sh_mobile_lcdcfb.c | 47 |
1 files changed, 44 insertions, 3 deletions
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c index 7f30cb33a20..3ad5157f989 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -23,6 +23,8 @@ #include <asm/atomic.h> #define PALETTE_NR 16 +#define SIDE_B_OFFSET 0x1000 +#define MIRROR_OFFSET 0x2000 /* shared registers */ #define _LDDCKR 0x410 @@ -100,6 +102,10 @@ static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { #define LDINTR_FS 0x00000004 #define LDINTR_VSS 0x00000002 #define LDINTR_VES 0x00000001 +#define LDRCNTR_SRS 0x00020000 +#define LDRCNTR_SRC 0x00010000 +#define LDRCNTR_MRS 0x00000002 +#define LDRCNTR_MRC 0x00000001 struct sh_mobile_lcdc_priv; struct sh_mobile_lcdc_chan { @@ -132,10 +138,39 @@ struct sh_mobile_lcdc_priv { int started; }; +static bool banked(int reg_nr) +{ + switch (reg_nr) { + case LDMT1R: + case LDMT2R: + case LDMT3R: + case LDDFR: + case LDSM1R: + case LDSA1R: + case LDMLSR: + case LDHCNR: + case LDHSYNR: + case LDVLNR: + case LDVSYNR: + return true; + } + return false; +} + static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, int reg_nr, unsigned long data) { iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); + if (banked(reg_nr)) + iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + + SIDE_B_OFFSET); +} + +static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, + int reg_nr, unsigned long data) +{ + iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + + MIRROR_OFFSET); } static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, @@ -308,10 +343,16 @@ static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) /* VSYNC End */ if (ldintr & LDINTR_VES) { + unsigned long ldrcntr = lcdc_read(priv, _LDRCNTR); /* Set the source address for the next refresh */ - lcdc_write_chan(ch, LDSA1R, ch->dma_handle + - ch->new_pan_offset); - lcdc_write(ch->lcdc, _LDRCNTR, 0); + lcdc_write_chan_mirror(ch, LDSA1R, ch->dma_handle + + ch->new_pan_offset); + if (lcdc_chan_is_sublcd(ch)) + lcdc_write(ch->lcdc, _LDRCNTR, + ldrcntr ^ LDRCNTR_SRS); + else + lcdc_write(ch->lcdc, _LDRCNTR, + ldrcntr ^ LDRCNTR_MRS); ch->pan_offset = ch->new_pan_offset; } } |