From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 drivers/gpu/drm/shmobile/shmob_drm_kms.c | 160 +++++++++++++++++++++++++++++++
 1 file changed, 160 insertions(+)
 create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_kms.c

(limited to 'drivers/gpu/drm/shmobile/shmob_drm_kms.c')

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 000000000..aaf98ace4
--- /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 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;
+}
-- 
cgit v1.2.3-54-g00ecf