diff options
Diffstat (limited to 'drivers/gpu/drm/shmobile/shmob_drm_kms.c')
| -rw-r--r-- | drivers/gpu/drm/shmobile/shmob_drm_kms.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_kms.c b/drivers/gpu/drm/shmobile/shmob_drm_kms.c new file mode 100644 index 000000000000..c291ee385b4f --- /dev/null +++ b/drivers/gpu/drm/shmobile/shmob_drm_kms.c @@ -0,0 +1,160 @@ +/* + * shmob_drm_kms.c -- SH Mobile DRM Mode Setting + * + * Copyright (C) 2012 Renesas Corporation + * + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <drm/drmP.h> +#include <drm/drm_crtc.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_fb_cma_helper.h> +#include <drm/drm_gem_cma_helper.h> + +#include <video/sh_mobile_meram.h> + +#include "shmob_drm_crtc.h" +#include "shmob_drm_drv.h" +#include "shmob_drm_kms.h" +#include "shmob_drm_regs.h" + +/* ----------------------------------------------------------------------------- + * Format helpers + */ + +static const struct shmob_drm_format_info shmob_drm_format_infos[] = { + { + .fourcc = DRM_FORMAT_RGB565, + .bpp = 16, + .yuv = false, + .lddfr = LDDFR_PKF_RGB16, + .meram = SH_MOBILE_MERAM_PF_RGB, + }, { + .fourcc = DRM_FORMAT_RGB888, + .bpp = 24, + .yuv = false, + .lddfr = LDDFR_PKF_RGB24, + .meram = SH_MOBILE_MERAM_PF_RGB, + }, { + .fourcc = DRM_FORMAT_ARGB8888, + .bpp = 32, + .yuv = false, + .lddfr = LDDFR_PKF_ARGB32, + .meram = SH_MOBILE_MERAM_PF_RGB, + }, { + .fourcc = DRM_FORMAT_NV12, + .bpp = 12, + .yuv = true, + .lddfr = LDDFR_CC | LDDFR_YF_420, + .meram = SH_MOBILE_MERAM_PF_NV, + }, { + .fourcc = DRM_FORMAT_NV21, + .bpp = 12, + .yuv = true, + .lddfr = LDDFR_CC | LDDFR_YF_420, + .meram = SH_MOBILE_MERAM_PF_NV, + }, { + .fourcc = DRM_FORMAT_NV16, + .bpp = 16, + .yuv = true, + .lddfr = LDDFR_CC | LDDFR_YF_422, + .meram = SH_MOBILE_MERAM_PF_NV, + }, { + .fourcc = DRM_FORMAT_NV61, + .bpp = 16, + .yuv = true, + .lddfr = LDDFR_CC | LDDFR_YF_422, + .meram = SH_MOBILE_MERAM_PF_NV, + }, { + .fourcc = DRM_FORMAT_NV24, + .bpp = 24, + .yuv = true, + .lddfr = LDDFR_CC | LDDFR_YF_444, + .meram = SH_MOBILE_MERAM_PF_NV24, + }, { + .fourcc = DRM_FORMAT_NV42, + .bpp = 24, + .yuv = true, + .lddfr = LDDFR_CC | LDDFR_YF_444, + .meram = SH_MOBILE_MERAM_PF_NV24, + }, +}; + +const struct shmob_drm_format_info *shmob_drm_format_info(u32 fourcc) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(shmob_drm_format_infos); ++i) { + if (shmob_drm_format_infos[i].fourcc == fourcc) + return &shmob_drm_format_infos[i]; + } + + return NULL; +} + +/* ----------------------------------------------------------------------------- + * Frame buffer + */ + +static struct drm_framebuffer * +shmob_drm_fb_create(struct drm_device *dev, struct drm_file *file_priv, + struct drm_mode_fb_cmd2 *mode_cmd) +{ + const struct shmob_drm_format_info *format; + + format = shmob_drm_format_info(mode_cmd->pixel_format); + if (format == NULL) { + dev_dbg(dev->dev, "unsupported pixel format %08x\n", + mode_cmd->pixel_format); + return ERR_PTR(-EINVAL); + } + + if (mode_cmd->pitches[0] & 7 || mode_cmd->pitches[0] >= 65536) { + dev_dbg(dev->dev, "valid pitch value %u\n", + mode_cmd->pitches[0]); + return ERR_PTR(-EINVAL); + } + + if (format->yuv) { + unsigned int chroma_cpp = format->bpp == 24 ? 2 : 1; + + if (mode_cmd->pitches[1] != mode_cmd->pitches[0] * chroma_cpp) { + dev_dbg(dev->dev, + "luma and chroma pitches do not match\n"); + return ERR_PTR(-EINVAL); + } + } + + return drm_fb_cma_create(dev, file_priv, mode_cmd); +} + +static const struct drm_mode_config_funcs shmob_drm_mode_config_funcs = { + .fb_create = shmob_drm_fb_create, +}; + +int shmob_drm_modeset_init(struct shmob_drm_device *sdev) +{ + drm_mode_config_init(sdev->ddev); + + shmob_drm_crtc_create(sdev); + shmob_drm_encoder_create(sdev); + shmob_drm_connector_create(sdev, &sdev->encoder.encoder); + + drm_kms_helper_poll_init(sdev->ddev); + + sdev->ddev->mode_config.min_width = 0; + sdev->ddev->mode_config.min_height = 0; + sdev->ddev->mode_config.max_width = 4095; + sdev->ddev->mode_config.max_height = 4095; + sdev->ddev->mode_config.funcs = &shmob_drm_mode_config_funcs; + + drm_helper_disable_unused_functions(sdev->ddev); + + return 0; +} |