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| author |   Russell King <rmk+kernel@arm.linux.org.uk> | 2015-07-21 10:00:15 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-10-06 19:58:21 +0100 |
| commit | f94ab604db9db1a8a0cf0827f5573bfd2d2b89aa (patch) | |
| tree | 3c921e8362921f116b9e71c921b4901cf9f0165e /drivers/gpu/ipu-v3/ipu-di.c | |
| parent | Linux 4.3-rc4 (diff) | |
| download | linux-dev-f94ab604db9db1a8a0cf0827f5573bfd2d2b89aa.tar.xz linux-dev-f94ab604db9db1a8a0cf0827f5573bfd2d2b89aa.zip | |
gpu: imx: simplify sync polarity setting
Use a function to convert the sync pin to a bit mask for the DI_GENERAL
register, and move this out of the interlace/non-interlace path to the
common path.
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/gpu/ipu-v3/ipu-di.c')
| -rw-r--r-- | drivers/gpu/ipu-v3/ipu-di.c | 50 |
1 files changed, 28 insertions, 22 deletions
diff --git a/drivers/gpu/ipu-v3/ipu-di.c b/drivers/gpu/ipu-v3/ipu-di.c index 2970c6bb668c..a96991c5c15f 100644 --- a/drivers/gpu/ipu-v3/ipu-di.c +++ b/drivers/gpu/ipu-v3/ipu-di.c @@ -543,6 +543,29 @@ int ipu_di_adjust_videomode(struct ipu_di *di, struct videomode *mode) } EXPORT_SYMBOL_GPL(ipu_di_adjust_videomode); +static u32 ipu_di_gen_polarity(int pin) +{ + switch (pin) { + case 1: + return DI_GEN_POLARITY_1; + case 2: + return DI_GEN_POLARITY_2; + case 3: + return DI_GEN_POLARITY_3; + case 4: + return DI_GEN_POLARITY_4; + case 5: + return DI_GEN_POLARITY_5; + case 6: + return DI_GEN_POLARITY_6; + case 7: + return DI_GEN_POLARITY_7; + case 8: + return DI_GEN_POLARITY_8; + } + return 0; +} + int ipu_di_init_sync_panel(struct ipu_di *di, struct ipu_di_signal_cfg *sig) { u32 reg; @@ -586,11 +609,6 @@ int ipu_di_init_sync_panel(struct ipu_di *di, struct ipu_di_signal_cfg *sig) di_gen |= DI_GEN_POLARITY_8; vsync_cnt = 7; - - if (sig->mode.flags & DISPLAY_FLAGS_HSYNC_HIGH) - di_gen |= DI_GEN_POLARITY_3; - if (sig->mode.flags & DISPLAY_FLAGS_VSYNC_HIGH) - di_gen |= DI_GEN_POLARITY_2; } else { ipu_di_sync_config_noninterlaced(di, sig, div); @@ -602,25 +620,13 @@ int ipu_di_init_sync_panel(struct ipu_di *di, struct ipu_di_signal_cfg *sig) */ if (!(sig->hsync_pin == 2 && sig->vsync_pin == 3)) vsync_cnt = 6; - - if (sig->mode.flags & DISPLAY_FLAGS_HSYNC_HIGH) { - if (sig->hsync_pin == 2) - di_gen |= DI_GEN_POLARITY_2; - else if (sig->hsync_pin == 4) - di_gen |= DI_GEN_POLARITY_4; - else if (sig->hsync_pin == 7) - di_gen |= DI_GEN_POLARITY_7; - } - if (sig->mode.flags & DISPLAY_FLAGS_VSYNC_HIGH) { - if (sig->vsync_pin == 3) - di_gen |= DI_GEN_POLARITY_3; - else if (sig->vsync_pin == 6) - di_gen |= DI_GEN_POLARITY_6; - else if (sig->vsync_pin == 8) - di_gen |= DI_GEN_POLARITY_8; - } } + if (sig->mode.flags & DISPLAY_FLAGS_HSYNC_HIGH) + di_gen |= ipu_di_gen_polarity(sig->hsync_pin); + if (sig->mode.flags & DISPLAY_FLAGS_VSYNC_HIGH) + di_gen |= ipu_di_gen_polarity(sig->vsync_pin); + if (sig->clk_pol) di_gen |= DI_GEN_POLARITY_DISP_CLK; |