Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / shmobile / shmob_drm_kms.c

diff --git a/kernel/drivers/gpu/drm/shmobile/shmob_drm_kms.c b/kernel/drivers/gpu/drm/shmobile/shmob_drm_kms.c
new file mode 100644 (file)
index 0000000..aaf98ac
--- /dev/null
+++ b/kernel/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 Electronics 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, "invalid 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;
+}