diff options
-rw-r--r-- | drivers/video/intelfb/intelfbdrv.c | 3 | ||||
-rw-r--r-- | drivers/video/intelfb/intelfbhw.c | 47 | ||||
-rw-r--r-- | drivers/video/intelfb/intelfbhw.h | 1 |
3 files changed, 34 insertions, 17 deletions
diff --git a/drivers/video/intelfb/intelfbdrv.c b/drivers/video/intelfb/intelfbdrv.c index 0cafd642fbc..5ba39999105 100644 --- a/drivers/video/intelfb/intelfbdrv.c +++ b/drivers/video/intelfb/intelfbdrv.c @@ -874,6 +874,9 @@ static int __devinit intelfb_pci_register(struct pci_dev *pdev, if (bailearly == 18) bailout(dinfo); + /* read active pipe */ + dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state); + /* Cursor initialisation */ if (dinfo->hwcursor) { intelfbhw_cursor_init(dinfo); diff --git a/drivers/video/intelfb/intelfbhw.c b/drivers/video/intelfb/intelfbhw.c index 0689f97c523..81627466804 100644 --- a/drivers/video/intelfb/intelfbhw.c +++ b/drivers/video/intelfb/intelfbhw.c @@ -469,6 +469,32 @@ void intelfbhw_do_blank(int blank, struct fb_info *info) } +/* Check which pipe is connected to an active display plane. */ +int intelfbhw_active_pipe(const struct intelfb_hwstate *hw) +{ + int pipe = -1; + + /* keep old default behaviour - prefer PIPE_A */ + if (hw->disp_b_ctrl & DISPPLANE_PLANE_ENABLE) { + pipe = (hw->disp_b_ctrl >> DISPPLANE_SEL_PIPE_SHIFT); + pipe &= PIPE_MASK; + if (unlikely(pipe == PIPE_A)) + return PIPE_A; + } + if (hw->disp_a_ctrl & DISPPLANE_PLANE_ENABLE) { + pipe = (hw->disp_a_ctrl >> DISPPLANE_SEL_PIPE_SHIFT); + pipe &= PIPE_MASK; + if (likely(pipe == PIPE_A)) + return PIPE_A; + } + /* Impossible that no pipe is selected - return PIPE_A */ + WARN_ON(pipe == -1); + if (unlikely(pipe == -1)) + pipe = PIPE_A; + + return pipe; +} + void intelfbhw_setcolreg(struct intelfb_info *dinfo, unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp) @@ -1019,7 +1045,7 @@ int intelfbhw_mode_to_hw(struct intelfb_info *dinfo, struct intelfb_hwstate *hw, struct fb_var_screeninfo *var) { - int pipe = PIPE_A; + int pipe = intelfbhw_active_pipe(hw); u32 *dpll, *fp0, *fp1; u32 m1, m2, n, p1, p2, clock_target, clock; u32 hsync_start, hsync_end, hblank_start, hblank_end, htotal, hactive; @@ -1033,12 +1059,6 @@ int intelfbhw_mode_to_hw(struct intelfb_info *dinfo, /* Disable VGA */ hw->vgacntrl |= VGA_DISABLE; - /* Check whether pipe A or pipe B is enabled. */ - if (hw->pipe_a_conf & PIPECONF_ENABLE) - pipe = PIPE_A; - else if (hw->pipe_b_conf & PIPECONF_ENABLE) - pipe = PIPE_B; - /* Set which pipe's registers will be set. */ if (pipe == PIPE_B) { dpll = &hw->dpll_b; @@ -1262,7 +1282,6 @@ int intelfbhw_mode_to_hw(struct intelfb_info *dinfo, int intelfbhw_program_mode(struct intelfb_info *dinfo, const struct intelfb_hwstate *hw, int blank) { - int pipe = PIPE_A; u32 tmp; const u32 *dpll, *fp0, *fp1, *pipe_conf; const u32 *hs, *ht, *hb, *vs, *vt, *vb, *ss; @@ -1272,7 +1291,7 @@ int intelfbhw_program_mode(struct intelfb_info *dinfo, u32 src_size_reg; u32 count, tmp_val[3]; - /* Assume single pipe, display plane A, analog CRT. */ + /* Assume single pipe */ #if VERBOSE > 0 DBG_MSG("intelfbhw_program_mode\n"); @@ -1283,15 +1302,9 @@ int intelfbhw_program_mode(struct intelfb_info *dinfo, tmp |= VGA_DISABLE; OUTREG(VGACNTRL, tmp); - /* Check whether pipe A or pipe B is enabled. */ - if (hw->pipe_a_conf & PIPECONF_ENABLE) - pipe = PIPE_A; - else if (hw->pipe_b_conf & PIPECONF_ENABLE) - pipe = PIPE_B; - - dinfo->pipe = pipe; + dinfo->pipe = intelfbhw_active_pipe(hw); - if (pipe == PIPE_B) { + if (dinfo->pipe == PIPE_B) { dpll = &hw->dpll_b; fp0 = &hw->fpb0; fp1 = &hw->fpb1; diff --git a/drivers/video/intelfb/intelfbhw.h b/drivers/video/intelfb/intelfbhw.h index 0b076bac321..216ca20f259 100644 --- a/drivers/video/intelfb/intelfbhw.h +++ b/drivers/video/intelfb/intelfbhw.h @@ -604,5 +604,6 @@ extern void intelfbhw_cursor_reset(struct intelfb_info *dinfo); extern int intelfbhw_enable_irq(struct intelfb_info *dinfo); extern void intelfbhw_disable_irq(struct intelfb_info *dinfo); extern int intelfbhw_wait_for_vsync(struct intelfb_info *dinfo, u32 pipe); +extern int intelfbhw_active_pipe(const struct intelfb_hwstate *hw); #endif /* _INTELFBHW_H */ |