Hi,
On Fri, 2009-09-18 at 16:19 +0200, ext [email protected] wrote:
> From: Matthias Ludwig <[email protected]>
>
> Signed-off-by: Matthias Ludwig <[email protected]>
> ---
>
> OMAP CPU can only provide a level of about 0.8V at TVOUT, which is not
> compliant with NTSC nor PAL. If one wants to have a compliant signal
> external buffers need to be added. This requires TVOUTBYPASS to be set.
> This patch implements a simple way to set it from dss platform data.
>
> Is there a more elegant way to get register address?
Where does OMAP2_TVOUTBYPASS come from? It doesn't exist in my tree.
I have a hack in my board files that just do:
l = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1) | (1 << 18);
omap_ctrl_writel(l, OMAP343X_CONTROL_DEVCONF1);
A flag in the omap_dss_device would be the proper way to do it, as you
did, but I think venc.c should call some function somewhere in arch/arm/
to actually do the setup.
Tomi
>
> arch/arm/plat-omap/include/mach/display.h | 1 +
> drivers/video/omap2/dss/venc.c | 16 ++++++++++++++++
> 2 files changed, 17 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/plat-omap/include/mach/display.h
> b/arch/arm/plat-omap/include/mach/display.h
> index 4c7422e..3013be0 100644
> --- a/arch/arm/plat-omap/include/mach/display.h
> +++ b/arch/arm/plat-omap/include/mach/display.h
> @@ -380,6 +380,7 @@ struct omap_dss_device {
> struct {
> enum omap_dss_venc_type type;
> bool invert_polarity;
> + bool bypass_tvout;
> } venc;
> } phy;
>
> diff --git a/drivers/video/omap2/dss/venc.c b/drivers/video/omap2/dss/venc.c
> index cf7827e..cb35a0d 100644
> --- a/drivers/video/omap2/dss/venc.c
> +++ b/drivers/video/omap2/dss/venc.c
> @@ -35,6 +35,7 @@
> #include <linux/regulator/consumer.h>
>
> #include <mach/display.h>
> +#include <mach/control.h>
> #include <mach/cpu.h>
>
> #include "dss.h"
> @@ -532,6 +533,21 @@ static void venc_power_on(struct omap_dss_device *dssdev)
>
> venc_write_reg(VENC_OUTPUT_CONTROL, l);
>
> + if (dssdev->phy.venc.bypass_tvout) {
> + u32 dc1, dc1_addr;
> +#ifdef CONFIG_ARCH_OMAP3430
> + dc1_addr = OMAP343X_CTRL_REGADDR(OMAP343X_CONTROL_DEVCONF1);
> +#elif defined(CONFIG_ARCH_OMAP2430)
> + dc1_addr = OMAP243X_CTRL_REGADDR(OMAP343X_CONTROL_DEVCONF1);
> +#elif defined(CONFIG_ARCH_OMAP2420)
> + dc1_addr = OMAP242X_CTRL_REGADDR(OMAP343X_CONTROL_DEVCONF1);
> +#else
> + bug();
> +#endif
> + dc1 = readl(dc1_addr) | OMAP2_TVOUTBYPASS;
> + writel(dc1, dc1_addr);
> + }
> +
> dispc_set_digit_size(dssdev->panel.timings.x_res,
> dssdev->panel.timings.y_res/2);
>
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