diff options
| author | Timur Tabi <timur@freescale.com> | 2012-10-16 17:33:44 -0500 |
|---|---|---|
| committer | Timur Tabi <timur@freescale.com> | 2012-11-26 13:41:19 -0600 |
| commit | e95c17e9caff4b106cc95b761f3e07964a5a0d9f (patch) | |
| tree | 64ab7ac3f0382de82b32e8a17176b1c677355f99 | |
| parent | 2867173572d5ca5084e8836c8a1d0cafa95b729b (diff) | |
drivers/video: fsl-diu-fb: add support for set_gamma ioctls
The MPC5121 BSP comes with a gamma_set utility that initializes the gamma
table via an ioctl. Unfortunately, the ioctl number that utility uses
is defined improperly, but we can still support it.
Signed-off-by: Timur Tabi <timur@freescale.com>
| -rw-r--r-- | drivers/video/fsl-diu-fb.c | 17 | ||||
| -rw-r--r-- | include/linux/fsl-diu-fb.h | 9 |
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c index 5b12e1783fac..9c4054760627 100644 --- a/drivers/video/fsl-diu-fb.c +++ b/drivers/video/fsl-diu-fb.c @@ -1181,6 +1181,23 @@ static int fsl_diu_ioctl(struct fb_info *info, unsigned int cmd, ad->ckmin_b = ck.blue_min; } break; +#ifdef CONFIG_PPC_MPC512x + case MFB_SET_GAMMA: { + struct fsl_diu_data *data = mfbi->parent; + + if (copy_from_user(data->gamma, buf, sizeof(data->gamma))) + return -EFAULT; + setbits32(&data->diu_reg->gamma, 0); /* Force table reload */ + break; + } + case MFB_GET_GAMMA: { + struct fsl_diu_data *data = mfbi->parent; + + if (copy_to_user(buf, data->gamma, sizeof(data->gamma))) + return -EFAULT; + break; + } +#endif default: dev_err(info->dev, "unknown ioctl command (0x%08X)\n", cmd); return -ENOIOCTLCMD; diff --git a/include/linux/fsl-diu-fb.h b/include/linux/fsl-diu-fb.h index 11c16a1fb9e3..a1e8277120c7 100644 --- a/include/linux/fsl-diu-fb.h +++ b/include/linux/fsl-diu-fb.h @@ -47,6 +47,15 @@ struct aoi_display_offset { #define MFB_GET_PIXFMT _IOR('M', 8, __u32) /* + * The MPC5121 BSP comes with a gamma_set utility that initializes the + * gamma table. Unfortunately, it uses bad values for the IOCTL commands, + * but there's nothing we can do about it now. These ioctls are only + * supported on the MPC5121. + */ +#define MFB_SET_GAMMA _IOW('M', 1, __u8) +#define MFB_GET_GAMMA _IOR('M', 1, __u8) + +/* * The original definitions of MFB_SET_PIXFMT and MFB_GET_PIXFMT used the * wrong value for 'size' field of the ioctl. The current macros above use the * right size, but we still need to provide backwards compatibility, at least |