From cb747ea27451266c6d340a018aedcd0675a18b00 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Fri, 23 Sep 2016 14:54:39 +0300
Subject: Add OmapCard and OmapFramebuffer

Add OmapCard and OmapFramebuffer classes to utilize omap_bos. Only
non-tiled framebuffer is implemented for now.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---
 kms++/src/omap/omapcard.cpp        |  29 +++++++++
 kms++/src/omap/omapframebuffer.cpp | 126 +++++++++++++++++++++++++++++++++++++
 2 files changed, 155 insertions(+)
 create mode 100644 kms++/src/omap/omapcard.cpp
 create mode 100644 kms++/src/omap/omapframebuffer.cpp

(limited to 'kms++/src/omap')

diff --git a/kms++/src/omap/omapcard.cpp b/kms++/src/omap/omapcard.cpp
new file mode 100644
index 0000000..e811b6d
--- /dev/null
+++ b/kms++/src/omap/omapcard.cpp
@@ -0,0 +1,29 @@
+
+#include <kms++/omap/omapcard.h>
+
+extern "C" {
+#include <omap_drmif.h>
+}
+
+using namespace std;
+
+namespace kms
+{
+OmapCard::OmapCard()
+	: OmapCard("/dev/dri/card0")
+{
+
+}
+
+OmapCard::OmapCard(const string& device)
+	: Card(device)
+{
+	m_omap_dev = omap_device_new(fd());
+}
+
+OmapCard::~OmapCard()
+{
+	omap_device_del(m_omap_dev);
+}
+
+}
diff --git a/kms++/src/omap/omapframebuffer.cpp b/kms++/src/omap/omapframebuffer.cpp
new file mode 100644
index 0000000..a3a696d
--- /dev/null
+++ b/kms++/src/omap/omapframebuffer.cpp
@@ -0,0 +1,126 @@
+
+#include <cstring>
+#include <stdexcept>
+#include <sys/mman.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <drm_fourcc.h>
+#include <drm.h>
+#include <drm_mode.h>
+
+#include <kms++/kms++.h>
+#include <kms++/omap/omapkms++.h>
+
+extern "C" {
+#include <omap_drmif.h>
+}
+
+using namespace std;
+
+namespace kms
+{
+
+OmapFramebuffer::OmapFramebuffer(OmapCard& card, uint32_t width, uint32_t height, PixelFormat format)
+	: MappedFramebuffer(card, width, height), m_omap_card(card), m_format(format)
+{
+	Create();
+}
+
+OmapFramebuffer::~OmapFramebuffer()
+{
+	Destroy();
+}
+
+void OmapFramebuffer::Create()
+{
+	const PixelFormatInfo& format_info = get_pixel_format_info(m_format);
+
+	m_num_planes = format_info.num_planes;
+
+	for (int i = 0; i < format_info.num_planes; ++i) {
+		const PixelFormatPlaneInfo& pi = format_info.planes[i];
+		FramebufferPlane& plane = m_planes[i];
+
+		uint32_t flags = OMAP_BO_SCANOUT | OMAP_BO_WC;
+
+		uint32_t size = width() * height() * pi.bitspp / 8;
+
+		struct omap_bo* bo =  omap_bo_new(m_omap_card.dev(), size, flags);
+		if (!bo)
+			throw invalid_argument(string("omap_bo_new failed: ") + strerror(errno));
+
+		uint32_t stride = width() * pi.bitspp / 8;
+
+		plane.omap_bo = bo;
+		plane.handle = omap_bo_handle(bo);
+		plane.stride = stride;
+		plane.size = omap_bo_size(bo);
+		plane.offset = 0;
+		plane.map = 0;
+		plane.prime_fd = -1;
+	}
+
+	/* create framebuffer object for the dumb-buffer */
+	uint32_t bo_handles[4] = { m_planes[0].handle, m_planes[1].handle };
+	uint32_t pitches[4] = { m_planes[0].stride, m_planes[1].stride };
+	uint32_t offsets[4] = { m_planes[0].offset, m_planes[1].offset };
+	uint32_t id;
+	int r = drmModeAddFB2(card().fd(), width(), height(), (uint32_t)format(),
+			  bo_handles, pitches, offsets, &id, 0);
+	if (r)
+		throw invalid_argument(string("drmModeAddFB2 failed: ") + strerror(errno));
+
+	set_id(id);
+}
+
+void OmapFramebuffer::Destroy()
+{
+	drmModeRmFB(card().fd(), id());
+
+	for (uint i = 0; i < m_num_planes; ++i) {
+		FramebufferPlane& plane = m_planes[i];
+
+		/* unmap buffer */
+		if (plane.map)
+			munmap(plane.map, plane.size);
+
+		omap_bo_del(plane.omap_bo);
+
+		if (plane.prime_fd >= 0)
+			::close(plane.prime_fd);
+	}
+}
+
+uint8_t* OmapFramebuffer::map(unsigned plane)
+{
+	FramebufferPlane& p = m_planes[plane];
+
+	if (p.map)
+		return p.map;
+
+	p.map = (uint8_t*)omap_bo_map(p.omap_bo);
+	if (p.map == MAP_FAILED)
+		throw invalid_argument(string("mmap failed: ") + strerror(errno));
+
+	return p.map;
+}
+
+int OmapFramebuffer::prime_fd(unsigned int plane)
+{
+	FramebufferPlane& p = m_planes[plane];
+
+	if (p.prime_fd >= 0)
+		return p.prime_fd;
+
+	int fd = omap_bo_dmabuf(p.omap_bo);
+	if (fd < 0)
+		throw std::runtime_error("omap_bo_dmabuf failed\n");
+
+	p.prime_fd = fd;
+
+	return fd;
+}
+
+}
-- 
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