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drm: Add a driver for kvm emulated Cirrus https://lkml.org/lkml/2011/4/18/366

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cirrus.patch
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---
drivers/gpu/drm/Kconfig | 8 +
drivers/gpu/drm/Makefile | 1 +
drivers/gpu/drm/cirrus/Makefile | 6 +
drivers/gpu/drm/cirrus/cirrus.h | 40 ++++
drivers/gpu/drm/cirrus/cirrus_crtc.c | 277 +++++++++++++++++++++++++++
drivers/gpu/drm/cirrus/cirrus_device.c | 111 +++++++++++
drivers/gpu/drm/cirrus/cirrus_display.c | 70 +++++++
drivers/gpu/drm/cirrus/cirrus_drv.c | 91 +++++++++
drivers/gpu/drm/cirrus/cirrus_drv.h | 127 ++++++++++++
drivers/gpu/drm/cirrus/cirrus_encoder.c | 139 ++++++++++++++
drivers/gpu/drm/cirrus/cirrus_fbdev.c | 214 +++++++++++++++++++++
drivers/gpu/drm/cirrus/cirrus_framebuffer.c | 48 +++++
drivers/gpu/drm/cirrus/cirrus_kms.c | 59 ++++++
drivers/gpu/drm/cirrus/cirrus_mode.h | 54 +++++
drivers/gpu/drm/cirrus/cirrus_vga.c | 102 ++++++++++
15 files changed, 1347 insertions(+), 0 deletions(-)
create mode 100644 drivers/gpu/drm/cirrus/Makefile
create mode 100644 drivers/gpu/drm/cirrus/cirrus.h
create mode 100644 drivers/gpu/drm/cirrus/cirrus_crtc.c
create mode 100644 drivers/gpu/drm/cirrus/cirrus_device.c
create mode 100644 drivers/gpu/drm/cirrus/cirrus_display.c
create mode 100644 drivers/gpu/drm/cirrus/cirrus_drv.c
create mode 100644 drivers/gpu/drm/cirrus/cirrus_drv.h
create mode 100644 drivers/gpu/drm/cirrus/cirrus_encoder.c
create mode 100644 drivers/gpu/drm/cirrus/cirrus_fbdev.c
create mode 100644 drivers/gpu/drm/cirrus/cirrus_framebuffer.c
create mode 100644 drivers/gpu/drm/cirrus/cirrus_kms.c
create mode 100644 drivers/gpu/drm/cirrus/cirrus_mode.h
create mode 100644 drivers/gpu/drm/cirrus/cirrus_vga.c
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index c58f691..2f54d2f 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -126,6 +126,14 @@ config DRM_I915_KMS
the driver to bind to PCI devices, which precludes loading things
like intelfb.
+config DRM_KVM_CIRRUS
+ tristate "Kernel modesetting driver for qemu-kvm Cirrus emulation"
+ depends on DRM && PCI
+ select FB_CFB_FILLRECT
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT
+ select DRM_KMS_HELPER
+
config DRM_MGA
tristate "Matrox g200/g400"
depends on DRM && PCI
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 89cf05a..11e486f 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_DRM_RADEON)+= radeon/
obj-$(CONFIG_DRM_MGA) += mga/
obj-$(CONFIG_DRM_I810) += i810/
obj-$(CONFIG_DRM_I915) += i915/
+obj-$(CONFIG_DRM_KVM_CIRRUS) += cirrus/
obj-$(CONFIG_DRM_SIS) += sis/
obj-$(CONFIG_DRM_SAVAGE)+= savage/
obj-$(CONFIG_DRM_VMWGFX)+= vmwgfx/
diff --git a/drivers/gpu/drm/cirrus/Makefile b/drivers/gpu/drm/cirrus/Makefile
new file mode 100644
index 0000000..126dd50
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/Makefile
@@ -0,0 +1,6 @@
+ccflags-y := -Iinclude/drm
+cirrus-y := cirrus_crtc.o cirrus_encoder.o cirrus_device.o cirrus_display.o \
+ cirrus_drv.o cirrus_fbdev.o cirrus_framebuffer.o \
+ cirrus_kms.o cirrus_vga.o
+
+obj-$(CONFIG_DRM_KVM_CIRRUS) += cirrus.o
diff --git a/drivers/gpu/drm/cirrus/cirrus.h b/drivers/gpu/drm/cirrus/cirrus.h
new file mode 100644
index 0000000..44ad60a
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#ifndef __CIRRUS_H__
+#define __CIRRUS_H__
+
+#include "cirrus_mode.h"
+
+struct cirrus_mc {
+ resource_size_t vram_size;
+ resource_size_t vram_base;
+};
+
+struct cirrus_device {
+ struct device *dev;
+ struct drm_device *ddev;
+ struct pci_dev *pdev;
+ unsigned long flags;
+
+ resource_size_t rmmio_base;
+ resource_size_t rmmio_size;
+ void __iomem *rmmio;
+
+ drm_local_map_t *framebuffer;
+
+ struct cirrus_mc mc;
+ struct cirrus_mode_info mode_info;
+
+ int num_crtc;
+};
+
+#endif /* __CIRRUS_H__ */
diff --git a/drivers/gpu/drm/cirrus/cirrus_crtc.c b/drivers/gpu/drm/cirrus/cirrus_crtc.c
new file mode 100644
index 0000000..afce8f2
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_crtc.c
@@ -0,0 +1,277 @@
+/*
+ * Copyright 2000,2001 Sven Luther.
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ * Sven Luther
+ * Thomas Witzel
+ * Alan Hourihane
+ *
+ * Portions of this code derived from cirrusfb.c:
+ * drivers/video/cirrusfb.c - driver for Cirrus Logic chipsets
+ *
+ * Copyright 1999-2001 Jeff Garzik <jgarzik@pobox.com>
+ */
+#include "drmP.h"
+#include "drm.h"
+#include "drm_crtc_helper.h"
+
+#include <video/cirrus.h>
+
+#include "cirrus.h"
+#include "cirrus_drv.h"
+#include "cirrus_mode.h"
+
+#define CIRRUS_LUT_SIZE 256
+
+#define PALETTE_INDEX 0x8
+#define PALETTE_DATA 0x9
+
+/*
+ * This file contains setup code for the CRTC.
+ */
+
+static void cirrus_crtc_load_lut(struct drm_crtc *crtc)
+{
+ struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc);
+ struct drm_device *dev = crtc->dev;
+ struct cirrus_device *cdev = dev->dev_private;
+ int i;
+
+ if (!crtc->enabled)
+ return;
+
+ for (i = 0; i < CIRRUS_LUT_SIZE; i++) {
+ /* VGA registers */
+ WREG8(PALETTE_INDEX, i);
+ WREG8(PALETTE_DATA, cirrus_crtc->lut_r[i]);
+ WREG8(PALETTE_DATA, cirrus_crtc->lut_g[i]);
+ WREG8(PALETTE_DATA, cirrus_crtc->lut_b[i]);
+ }
+}
+
+/*
+ * The DRM core requires DPMS functions, but they make little sense in our
+ * case and so are just stubs
+ */
+
+static void cirrus_crtc_dpms(struct drm_crtc *crtc, int mode)
+{
+}
+
+/*
+ * The core passes the desired mode to the CRTC code to see whether any
+ * CRTC-specific modifications need to be made to it. We're in a position
+ * to just pass that straight through, so this does nothing
+ */
+static bool cirrus_crtc_mode_fixup(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+/*
+ * The meat of this driver. The core passes us a mode and we have to program
+ * it. The modesetting here is the bare minimum required to satisfy the qemu
+ * emulation of this hardware, and running this against a real device is
+ * likely to result in an inadequately programmed mode. We've already had
+ * the opportunity to modify the mode, so whatever we receive here should
+ * be something that can be correctly programmed and displayed
+ */
+static int cirrus_crtc_mode_set(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode,
+ int x, int y, struct drm_framebuffer *old_fb)
+{
+ struct drm_device *dev = crtc->dev;
+ struct cirrus_device *cdev = dev->dev_private;
+ int hsyncstart, hsyncend, htotal, hdispend;
+ int vtotal, vdispend;
+ int tmp;
+
+ htotal = mode->htotal / 8;
+ hsyncend = mode->hsync_end / 8;
+ hsyncstart = mode->hsync_start / 8;
+ hdispend = mode->hdisplay / 8;
+
+ vtotal = mode->vtotal;
+ vdispend = mode->vdisplay;
+
+ vdispend -= 1;
+ vtotal -= 2;
+
+ htotal -= 5;
+ hdispend -= 1;
+ hsyncstart += 1;
+ hsyncend += 1;
+
+ WREG_CRT(VGA_CRTC_V_SYNC_END, 0x20);
+ WREG_CRT(VGA_CRTC_H_TOTAL, htotal);
+ WREG_CRT(VGA_CRTC_H_DISP, hdispend);
+ WREG_CRT(VGA_CRTC_H_SYNC_START, hsyncstart);
+ WREG_CRT(VGA_CRTC_H_SYNC_END, hsyncend);
+ WREG_CRT(VGA_CRTC_V_TOTAL, vtotal & 0xff);
+ WREG_CRT(VGA_CRTC_V_DISP_END, vdispend & 0xff);
+
+ tmp = 0x40;
+ if ((vdispend + 1) & 512)
+ tmp |= 0x20;
+ WREG_CRT(VGA_CRTC_MAX_SCAN, tmp);
+
+ /*
+ * Overflow bits for values that don't fit in the standard registers
+ */
+ tmp = 16;
+ if (vtotal & 256)
+ tmp |= 1;
+ if (vdispend & 256)
+ tmp |= 2;
+ if ((vdispend + 1) & 256)
+ tmp |= 8;
+ if (vtotal & 512)
+ tmp |= 32;
+ if (vdispend & 512)
+ tmp |= 64;
+ WREG_CRT(VGA_CRTC_OVERFLOW, tmp);
+
+ tmp = 0;
+
+ /* More overflow bits */
+
+ if ((htotal + 5) & 64)
+ tmp |= 16;
+ if ((htotal + 5) & 128)
+ tmp |= 32;
+ if (vtotal & 256)
+ tmp |= 64;
+ if (vtotal & 512)
+ tmp |= 128;
+
+ WREG_CRT(CL_CRT1A, tmp);
+
+ /* Disable Hercules/CGA compatibility */
+ WREG_CRT(VGA_CRTC_MODE, 0x03);
+
+ return 0;
+}
+
+/*
+ * This is called before a mode is programmed. A typical use might be to
+ * enable DPMS during the programming to avoid seeing intermediate stages,
+ * but that's not relevant to us
+ */
+static void cirrus_crtc_prepare(struct drm_crtc *crtc)
+{
+}
+
+/*
+ * This is called after a mode is programmed. It should reverse anything done
+ * by the prepare function
+ */
+static void cirrus_crtc_commit(struct drm_crtc *crtc)
+{
+}
+
+/*
+ * The core can pass us a set of gamma values to program. We actually only
+ * use this for 8-bit mode so can't perform smooth fades on deeper modes,
+ * but it's a requirement that we provide the function
+ */
+static void cirrus_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, uint32_t start, uint32_t size)
+{
+ struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc);
+ int i;
+
+ if (size != CIRRUS_LUT_SIZE)
+ return;
+
+ for (i = 0; i < CIRRUS_LUT_SIZE; i++) {
+ cirrus_crtc->lut_r[i] = red[i];
+ cirrus_crtc->lut_g[i] = green[i];
+ cirrus_crtc->lut_b[i] = blue[i];
+ }
+ cirrus_crtc_load_lut(crtc);
+}
+
+/* Simple cleanup function */
+static void cirrus_crtc_destroy(struct drm_crtc *crtc)
+{
+ struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc);
+
+ drm_crtc_cleanup(crtc);
+ kfree(cirrus_crtc);
+}
+
+/* These provide the minimum set of functions required to handle a CRTC */
+static const struct drm_crtc_funcs cirrus_crtc_funcs = {
+ .gamma_set = cirrus_crtc_gamma_set,
+ .set_config = drm_crtc_helper_set_config,
+ .destroy = cirrus_crtc_destroy,
+};
+
+static const struct drm_crtc_helper_funcs cirrus_helper_funcs = {
+ .dpms = cirrus_crtc_dpms,
+ .mode_fixup = cirrus_crtc_mode_fixup,
+ .mode_set = cirrus_crtc_mode_set,
+ .prepare = cirrus_crtc_prepare,
+ .commit = cirrus_crtc_commit,
+ .load_lut = cirrus_crtc_load_lut,
+};
+
+/* CRTC setup */
+void cirrus_crtc_init(struct drm_device *dev)
+{
+ struct cirrus_device *cdev = dev->dev_private;
+ struct cirrus_crtc *cirrus_crtc;
+ int i;
+
+ cirrus_crtc = kzalloc(sizeof(struct cirrus_crtc) +
+ (CIRRUSFB_CONN_LIMIT * sizeof(struct drm_connector *)),
+ GFP_KERNEL);
+
+ if (cirrus_crtc == NULL)
+ return;
+
+ drm_crtc_init(dev, &cirrus_crtc->base, &cirrus_crtc_funcs);
+
+ drm_mode_crtc_set_gamma_size(&cirrus_crtc->base, CIRRUS_LUT_SIZE);
+ cdev->mode_info.crtc = cirrus_crtc;
+
+ for (i = 0; i < CIRRUS_LUT_SIZE; i++) {
+ cirrus_crtc->lut_r[i] = i;
+ cirrus_crtc->lut_g[i] = i;
+ cirrus_crtc->lut_b[i] = i;
+ }
+
+ drm_crtc_helper_add(&cirrus_crtc->base, &cirrus_helper_funcs);
+}
+
+/** Sets the color ramps on behalf of fbcon */
+void cirrus_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
+ u16 blue, int regno)
+{
+ struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc);
+
+ cirrus_crtc->lut_r[regno] = red;
+ cirrus_crtc->lut_g[regno] = green;
+ cirrus_crtc->lut_b[regno] = blue;
+}
+
+/** Gets the color ramps on behalf of fbcon */
+void cirrus_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, int regno)
+{
+ struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc);
+
+ *red = cirrus_crtc->lut_r[regno];
+ *green = cirrus_crtc->lut_g[regno];
+ *blue = cirrus_crtc->lut_b[regno];
+}
diff --git a/drivers/gpu/drm/cirrus/cirrus_device.c b/drivers/gpu/drm/cirrus/cirrus_device.c
new file mode 100644
index 0000000..685c53b
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_device.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#include "drmP.h"
+#include "drm.h"
+
+#include "cirrus.h"
+#include "cirrus_drv.h"
+
+/* Unmap the framebuffer from the core and release the memory */
+static void cirrus_vram_fini(struct cirrus_device *cdev)
+{
+ iounmap(cdev->rmmio);
+ cdev->rmmio = NULL;
+ if (cdev->framebuffer)
+ drm_rmmap(cdev->ddev, cdev->framebuffer);
+ if (cdev->mc.vram_base)
+ release_mem_region(cdev->mc.vram_base, cdev->mc.vram_size);
+}
+
+/* Map the framebuffer from the card and configure the core */
+static int cirrus_vram_init(struct cirrus_device *cdev)
+{
+ int ret;
+
+ /* BAR 0 is VRAM */
+ cdev->mc.vram_base = pci_resource_start(cdev->ddev->pdev, 0);
+ /* We have 4MB of VRAM */
+ cdev->mc.vram_size = 4 * 1024 * 1024;
+
+ if (!request_mem_region(cdev->mc.vram_base, cdev->mc.vram_size,
+ "cirrusdrmfb_vram")) {
+ CIRRUS_ERROR("can't reserve VRAM\n");
+ return -ENXIO;
+ }
+
+ /*
+ * Tell the kernel that vram is available to userspace. This driver
+ * provides no acceleration and doesn't support any off-screen buffers
+ * so we can just map the entirity of vram as a framebuffer.
+ */
+ ret = drm_addmap(cdev->ddev, cdev->mc.vram_base, cdev->mc.vram_size,
+ _DRM_FRAME_BUFFER, _DRM_WRITE_COMBINING,
+ &cdev->framebuffer);
+
+ if (ret) {
+ cirrus_vram_fini(cdev);
+ return ret;
+ }
+
+ return 0;
+}
+
+/*
+ * Our emulated hardware has two sets of memory. One is video RAM and can
+ * simply be used as a linear framebuffer - the other provides mmio access
+ * to the display registers. The latter can also be accessed via IO port
+ * access, but we map the range and use mmio to program them instead
+ */
+
+int cirrus_device_init(struct cirrus_device *cdev,
+ struct drm_device *ddev,
+ struct pci_dev *pdev, uint32_t flags)
+{
+ int ret;
+
+ cdev->dev = &pdev->dev;
+ cdev->ddev = ddev;
+ cdev->pdev = pdev;
+ cdev->flags = flags;
+
+ /* Hardcode the number of CRTCs to 1 */
+ cdev->num_crtc = 1;
+
+ /* BAR 0 is the framebuffer, BAR 1 contains registers */
+ cdev->rmmio_base = pci_resource_start(cdev->ddev->pdev, 1);
+ cdev->rmmio_size = pci_resource_len(cdev->ddev->pdev, 1);
+
+ if (!request_mem_region(cdev->rmmio_base, cdev->rmmio_size,
+ "cirrusdrmfb_mmio")) {
+ CIRRUS_ERROR("can't reserve mmio registers\n");
+ return -ENOMEM;
+ }
+
+ cdev->rmmio = ioremap(cdev->rmmio_base, cdev->rmmio_size);
+
+ if (cdev->rmmio == NULL)
+ return -ENOMEM;
+
+ ret = cirrus_vram_init(cdev);
+ if (ret) {
+ release_mem_region(cdev->rmmio_base, cdev->rmmio_size);
+ return ret;
+ }
+
+ return 0;
+}
+
+void cirrus_device_fini(struct cirrus_device *cdev)
+{
+ release_mem_region(cdev->rmmio_base, cdev->rmmio_size);
+ cirrus_vram_fini(cdev);
+}
diff --git a/drivers/gpu/drm/cirrus/cirrus_display.c b/drivers/gpu/drm/cirrus/cirrus_display.c
new file mode 100644
index 0000000..77f4dcf
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_display.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#include "drmP.h"
+#include "drm.h"
+#include "drm_crtc_helper.h"
+
+#include "cirrus.h"
+#include "cirrus_drv.h"
+
+/*
+ * This file contains simple functions for initialising the driver
+ */
+
+int cirrus_modeset_init(struct cirrus_device *cdev)
+{
+ struct drm_encoder *encoder;
+ struct drm_connector *connector;
+ int ret;
+
+ drm_mode_config_init(cdev->ddev);
+ cdev->mode_info.mode_config_initialized = true;
+
+ cdev->ddev->mode_config.max_width = CIRRUS_MAX_FB_WIDTH;
+ cdev->ddev->mode_config.max_height = CIRRUS_MAX_FB_HEIGHT;
+
+ cdev->ddev->mode_config.fb_base = cdev->mc.vram_base;
+
+ cirrus_crtc_init(cdev->ddev);
+
+ encoder = cirrus_encoder_init(cdev->ddev);
+ if (!encoder) {
+ CIRRUS_ERROR("cirrus_encoder_init failed\n");
+ return -1;
+ }
+
+ connector = cirrus_vga_init(cdev->ddev);
+ if (!connector) {
+ CIRRUS_ERROR("cirrus_vga_init failed\n");
+ return -1;
+ }
+
+ drm_mode_connector_attach_encoder(connector, encoder);
+
+ ret = cirrus_fbdev_init(cdev);
+ if (ret) {
+ CIRRUS_ERROR("cirrus_fbdev_init failed\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+void cirrus_modeset_fini(struct cirrus_device *cdev)
+{
+ cirrus_fbdev_fini(cdev);
+
+ if (cdev->mode_info.mode_config_initialized) {
+ drm_mode_config_cleanup(cdev->ddev);
+ cdev->mode_info.mode_config_initialized = false;
+ }
+}
diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.c b/drivers/gpu/drm/cirrus/cirrus_drv.c
new file mode 100644
index 0000000..ecc8e8d
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_drv.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#include "drmP.h"
+#include "drm.h"
+
+#include "cirrus_drv.h"
+
+#include "drm_pciids.h"
+
+/*
+ * This is the generic driver code. This binds the driver to the drm core,
+ * which then performs further device association and calls our graphics init
+ * functions
+ */
+
+static struct drm_driver driver;
+
+static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
+ { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0,
+ 0, 0 },
+ {0,}
+};
+
+static int __devinit
+cirrus_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ return drm_get_pci_dev(pdev, ent, &driver);
+}
+
+static void cirrus_pci_remove(struct pci_dev *pdev)
+{
+ struct drm_device *dev = pci_get_drvdata(pdev);
+
+ drm_put_dev(dev);
+}
+
+static struct drm_driver driver = {
+ .driver_features = DRIVER_MODESET,
+ .load = cirrus_driver_load,
+ .unload = cirrus_driver_unload,
+ .reclaim_buffers = drm_core_reclaim_buffers,
+ .fops = {
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = drm_ioctl,
+ .mmap = drm_mmap,
+ .poll = drm_poll,
+ .fasync = drm_fasync,
+ },
+ .name = DRIVER_NAME,
+ .desc = DRIVER_DESC,
+ .date = DRIVER_DATE,
+ .major = DRIVER_MAJOR,
+ .minor = DRIVER_MINOR,
+ .patchlevel = DRIVER_PATCHLEVEL,
+};
+
+static struct pci_driver cirrus_pci_driver = {
+ .name = DRIVER_NAME,
+ .id_table = pciidlist,
+ .probe = cirrus_pci_probe,
+ .remove = cirrus_pci_remove,
+};
+
+static int __init cirrus_init(void)
+{
+ return drm_pci_init(&driver, &cirrus_pci_driver);
+}
+
+static void __exit cirrus_exit(void)
+{
+ drm_pci_exit(&driver, &cirrus_pci_driver);
+}
+
+module_init(cirrus_init);
+module_exit(cirrus_exit);
+
+MODULE_DEVICE_TABLE(pci, pciidlist);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.h b/drivers/gpu/drm/cirrus/cirrus_drv.h
new file mode 100644
index 0000000..7a93f3e
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_drv.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#ifndef __CIRRUS_DRV_H__
+#define __CIRRUS_DRV_H__
+
+#include <video/vga.h>
+
+#define DRIVER_AUTHOR "Matthew Garrett"
+
+#define DRIVER_NAME "cirrus"
+#define DRIVER_DESC "qemu Cirrus emulation"
+#define DRIVER_DATE "20110418"
+
+#define DRIVER_MAJOR 1
+#define DRIVER_MINOR 0
+#define DRIVER_PATCHLEVEL 0
+
+#define CIRRUS_INFO(fmt, arg...) DRM_INFO(DRIVER_NAME ": " fmt, ##arg)
+#define CIRRUS_ERROR(fmt, arg...) DRM_ERROR(DRIVER_NAME ": " fmt, ##arg)
+
+#define CIRRUSFB_CONN_LIMIT 4
+
+#define RREG8(reg) ioread8(((void __iomem *)cdev->rmmio) + (reg))
+#define WREG8(reg, v) iowrite8(v, ((void __iomem *)cdev->rmmio) + (reg))
+#define RREG32(reg) ioread32(((void __iomem *)cdev->rmmio) + (reg))
+#define WREG32(reg, v) iowrite32(v, ((void __iomem *)cdev->rmmio) + (reg))
+
+#define SEQ_INDEX 4
+#define SEQ_DATA 5
+
+#define WREG_SEQ(reg, v) \
+ do { \
+ WREG8(SEQ_INDEX, reg); \
+ WREG8(SEQ_DATA, v); \
+ } while (0) \
+
+#define CRT_INDEX 0x14
+#define CRT_DATA 0x15
+
+#define WREG_CRT(reg, v) \
+ do { \
+ WREG8(CRT_INDEX, reg); \
+ WREG8(CRT_DATA, v); \
+ } while (0) \
+
+#define GFX_INDEX 0xe
+#define GFX_DATA 0xf
+
+#define WREG_GFX(reg, v) \
+ do { \
+ WREG8(GFX_INDEX, reg); \
+ WREG8(GFX_DATA, v); \
+ } while (0) \
+
+/*
+ * Cirrus has a "hidden" DAC register that can be accessed by writing to
+ * the pixel mask register to reset the state, then reading from the register
+ * four times. The next write will then pass to the DAC
+ */
+#define WREG_HDR(v) \
+ do { \
+ WREG8(0x6, 0xff); \
+ RREG8(0x6); \
+ RREG8(0x6); \
+ RREG8(0x6); \
+ RREG8(0x6); \
+ WREG8(0x6, v); \
+ } while (0) \
+
+
+#include "cirrus.h"
+
+ /* cirrus_crtc.c */
+void cirrus_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
+ u16 blue, int regno);
+void cirrus_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, int regno);
+void cirrus_crtc_init(struct drm_device *dev);
+
+ /* cirrus_encoder.c */
+struct drm_encoder *cirrus_encoder_init(struct drm_device *dev);
+
+ /* cirrus_device.c */
+int cirrus_device_init(struct cirrus_device *cdev,
+ struct drm_device *ddev,
+ struct pci_dev *pdev,
+ uint32_t flags);
+void cirrus_device_fini(struct cirrus_device *cdev);
+
+ /* cirrus_display.c */
+int cirrus_modeset_init(struct cirrus_device *cdev);
+void cirrus_modeset_fini(struct cirrus_device *cdev);
+
+ /* cirrus_fbdev.c */
+int cirrus_fbdev_init(struct cirrus_device *cdev);
+void cirrus_fbdev_fini(struct cirrus_device *cdev);
+
+ /* cirrus_framebuffer.c */
+int cirrus_framebuffer_init(struct drm_device *dev,
+ struct cirrus_framebuffer *gfb,
+ struct drm_mode_fb_cmd *mode_cmd);
+
+ /* cirrus_irq.c */
+void cirrus_driver_irq_preinstall(struct drm_device *dev);
+int cirrus_driver_irq_postinstall(struct drm_device *dev);
+void cirrus_driver_irq_uninstall(struct drm_device *dev);
+irqreturn_t cirrus_driver_irq_handler(DRM_IRQ_ARGS);
+
+ /* cirrus_kms.c */
+int cirrus_driver_load(struct drm_device *dev, unsigned long flags);
+int cirrus_driver_unload(struct drm_device *dev);
+extern struct drm_ioctl_desc cirrus_ioctls[];
+extern int cirrus_max_ioctl;
+
+ /* cirrus_vga.c */
+struct drm_connector *cirrus_vga_init(struct drm_device *dev);
+
+#endif /* __CIRRUS_DRV_H__ */
diff --git a/drivers/gpu/drm/cirrus/cirrus_encoder.c b/drivers/gpu/drm/cirrus/cirrus_encoder.c
new file mode 100644
index 0000000..3556ead
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_encoder.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#include "drmP.h"
+#include "drm.h"
+#include "drm_crtc_helper.h"
+
+#include <video/cirrus.h>
+
+#include "cirrus.h"
+#include "cirrus_drv.h"
+#include "cirrus_mode.h"
+
+/*
+ * The encoder comes after the CRTC in the output pipeline, but before
+ * the connector. It's responsible for ensuring that the digital
+ * stream is appropriately converted into the output format. Setup is
+ * very simple in this case - all we have to do is inform qemu of the
+ * colour depth in order to ensure that it displays appropriately
+ */
+
+/*
+ * These functions are analagous to those in the CRTC code, but are intended
+ * to handle any encoder-specific limitations
+ */
+static bool cirrus_encoder_mode_fixup(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+static void cirrus_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct drm_device *dev = encoder->dev;
+ struct cirrus_device *cdev = dev->dev_private;
+
+ unsigned char tmp;
+
+ switch (encoder->crtc->fb->bits_per_pixel) {
+ case 8:
+ tmp = 0x0;
+ break;
+ case 16:
+ /* Enable 16 bit mode */
+ WREG_HDR(0x01);
+ tmp = 0x6;
+ break;
+ case 24:
+ tmp = 0x4;
+ break;
+ case 32:
+ tmp = 0x8;
+ break;
+ default:
+ return;
+ }
+
+ /* Enable packed pixel graphics modes */
+ tmp |= 0x1;
+ WREG_SEQ(0x7, tmp);
+
+ /* Program the pitch */
+ tmp = encoder->crtc->fb->pitch / 8;
+ WREG_CRT(VGA_CRTC_OFFSET, tmp);
+
+ /* Enable extended blanking and pitch bits, and enable full memory */
+ tmp = 0x22;
+ if (encoder->crtc->fb->pitch >= 2048)
+ tmp |= 0x10;
+ WREG_CRT(0x1b, tmp);
+
+ /* Enable high-colour modes */
+ WREG_GFX(VGA_GFX_MODE, 0x40);
+
+ /* And set graphics mode */
+ WREG_GFX(VGA_GFX_MISC, 0x01);
+}
+
+static void cirrus_encoder_dpms(struct drm_encoder *encoder, int state)
+{
+ return;
+}
+
+static void cirrus_encoder_prepare(struct drm_encoder *encoder)
+{
+}
+
+static void cirrus_encoder_commit(struct drm_encoder *encoder)
+{
+}
+
+void cirrus_encoder_destroy(struct drm_encoder *encoder)
+{
+ struct cirrus_encoder *cirrus_encoder = to_cirrus_encoder(encoder);
+ drm_encoder_cleanup(encoder);
+ kfree(cirrus_encoder);
+}
+
+static const struct drm_encoder_helper_funcs cirrus_encoder_helper_funcs = {
+ .dpms = cirrus_encoder_dpms,
+ .mode_fixup = cirrus_encoder_mode_fixup,
+ .mode_set = cirrus_encoder_mode_set,
+ .prepare = cirrus_encoder_prepare,
+ .commit = cirrus_encoder_commit,
+};
+
+static const struct drm_encoder_funcs cirrus_encoder_encoder_funcs = {
+ .destroy = cirrus_encoder_destroy,
+};
+
+struct drm_encoder *cirrus_encoder_init(struct drm_device *dev)
+{
+ struct drm_encoder *encoder;
+ struct cirrus_encoder *cirrus_encoder;
+
+ cirrus_encoder = kzalloc(sizeof(struct cirrus_encoder), GFP_KERNEL);
+ if (!cirrus_encoder)
+ return NULL;
+
+ encoder = &cirrus_encoder->base;
+ encoder->possible_crtcs = 0x1;
+
+ drm_encoder_init(dev, encoder, &cirrus_encoder_encoder_funcs,
+ DRM_MODE_ENCODER_DAC);
+ drm_encoder_helper_add(encoder, &cirrus_encoder_helper_funcs);
+
+ return encoder;
+}
diff --git a/drivers/gpu/drm/cirrus/cirrus_fbdev.c b/drivers/gpu/drm/cirrus/cirrus_fbdev.c
new file mode 100644
index 0000000..086e647
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_fbdev.c
@@ -0,0 +1,214 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#include "drmP.h"
+#include "drm.h"
+#include "drm_fb_helper.h"
+
+#include <linux/fb.h>
+
+#include "cirrus.h"
+#include "cirrus_drv.h"
+
+struct cirrus_fbdev {
+ struct drm_fb_helper helper;
+ struct cirrus_framebuffer gfb;
+ struct list_head fbdev_list;
+ struct cirrus_device *cdev;
+};
+
+static struct fb_ops cirrusfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = drm_fb_helper_check_var,
+ .fb_set_par = drm_fb_helper_set_par,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_pan_display = drm_fb_helper_pan_display,
+ .fb_blank = drm_fb_helper_blank,
+ .fb_setcmap = drm_fb_helper_setcmap,
+};
+
+static int cirrusfb_create(struct cirrus_fbdev *gfbdev,
+ struct drm_fb_helper_surface_size *sizes)
+{
+ struct cirrus_device *cdev = gfbdev->cdev;
+ struct fb_info *info;
+ struct drm_framebuffer *fb;
+ struct drm_map_list *r_list, *list_t;
+ struct drm_local_map *map = NULL;
+ struct drm_mode_fb_cmd mode_cmd;
+ struct device *device = &cdev->pdev->dev;
+ int ret;
+
+ mode_cmd.width = sizes->surface_width;
+ mode_cmd.height = sizes->surface_height;
+ mode_cmd.bpp = sizes->surface_bpp;
+ mode_cmd.depth = sizes->surface_depth;
+ mode_cmd.pitch = mode_cmd.width * ((mode_cmd.bpp + 7) / 8);
+
+ info = framebuffer_alloc(0, device);
+ if (info == NULL)
+ return -ENOMEM;
+
+ info->par = gfbdev;
+
+ ret = cirrus_framebuffer_init(cdev->ddev, &gfbdev->gfb, &mode_cmd);
+ if (ret)
+ return ret;
+
+ fb = &gfbdev->gfb.base;
+ if (!fb) {
+ CIRRUS_INFO("fb is NULL\n");
+ return -EINVAL;
+ }
+
+ /* setup helper */
+ gfbdev->helper.fb = fb;
+ gfbdev->helper.fbdev = info;
+
+ strcpy(info->fix.id, "cirrusdrmfb");
+
+ drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
+
+ info->flags = FBINFO_DEFAULT;
+ info->fbops = &cirrusfb_ops;
+
+ drm_fb_helper_fill_var(info, &gfbdev->helper, sizes->fb_width,
+ sizes->fb_height);
+
+ /* setup aperture base/size for vesafb takeover */
+ info->apertures = alloc_apertures(1);
+ if (!info->apertures) {
+ ret = -ENOMEM;
+ goto out_iounmap;
+ }
+ info->apertures->ranges[0].base = cdev->ddev->mode_config.fb_base;
+ info->apertures->ranges[0].size = cdev->mc.vram_size;
+
+ list_for_each_entry_safe(r_list, list_t, &cdev->ddev->maplist, head) {
+ map = r_list->map;
+ if (map->type == _DRM_FRAME_BUFFER) {
+ map->handle = ioremap_nocache(map->offset, map->size);
+ if (!map->handle) {
+ CIRRUS_ERROR("fb: can't remap framebuffer\n");
+ return -1;
+ }
+ break;
+ }
+ }
+
+ info->fix.smem_start = map->offset;
+ info->fix.smem_len = map->size;
+ if (!info->fix.smem_len) {
+ CIRRUS_ERROR("%s: can't count memory\n", info->fix.id);
+ goto out_iounmap;
+ }
+ info->screen_base = map->handle;
+ if (!info->screen_base) {
+ CIRRUS_ERROR("%s: can't remap framebuffer\n", info->fix.id);
+ goto out_iounmap;
+ }
+
+ info->fix.mmio_start = 0;
+ info->fix.mmio_len = 0;
+
+ ret = fb_alloc_cmap(&info->cmap, 256, 0);
+ if (ret) {
+ CIRRUS_ERROR("%s: can't allocate color map\n", info->fix.id);
+ ret = -ENOMEM;
+ goto out_iounmap;
+ }
+
+ return 0;
+out_iounmap:
+ iounmap(map->handle);
+ return ret;
+}
+
+static int cirrus_fb_find_or_create_single(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size
+ *sizes)
+{
+ struct cirrus_fbdev *gfbdev = (struct cirrus_fbdev *)helper;
+ int new_fb = 0;
+ int ret;
+
+ if (!helper->fb) {
+ ret = cirrusfb_create(gfbdev, sizes);
+ if (ret)
+ return ret;
+ new_fb = 1;
+ }
+ return new_fb;
+}
+
+static int cirrus_fbdev_destroy(struct drm_device *dev,
+ struct cirrus_fbdev *gfbdev)
+{
+ struct fb_info *info;
+ struct cirrus_framebuffer *gfb = &gfbdev->gfb;
+
+ if (gfbdev->helper.fbdev) {
+ info = gfbdev->helper.fbdev;
+
+ unregister_framebuffer(info);
+ if (info->cmap.len)
+ fb_dealloc_cmap(&info->cmap);
+ framebuffer_release(info);
+ }
+
+ drm_fb_helper_fini(&gfbdev->helper);
+ drm_framebuffer_cleanup(&gfb->base);
+
+ return 0;
+}
+
+static struct drm_fb_helper_funcs cirrus_fb_helper_funcs = {
+ .gamma_set = cirrus_crtc_fb_gamma_set,
+ .gamma_get = cirrus_crtc_fb_gamma_get,
+ .fb_probe = cirrus_fb_find_or_create_single,
+};
+
+int cirrus_fbdev_init(struct cirrus_device *cdev)
+{
+ struct cirrus_fbdev *gfbdev;
+ int ret;
+
+ gfbdev = kzalloc(sizeof(struct cirrus_fbdev), GFP_KERNEL);
+ if (!gfbdev)
+ return -ENOMEM;
+
+ gfbdev->cdev = cdev;
+ cdev->mode_info.gfbdev = gfbdev;
+ gfbdev->helper.funcs = &cirrus_fb_helper_funcs;
+
+ ret = drm_fb_helper_init(cdev->ddev, &gfbdev->helper,
+ cdev->num_crtc, CIRRUSFB_CONN_LIMIT);
+ if (ret) {
+ kfree(gfbdev);
+ return ret;
+ }
+ drm_fb_helper_single_add_all_connectors(&gfbdev->helper);
+ drm_fb_helper_initial_config(&gfbdev->helper, 24);
+
+ return 0;
+}
+
+void cirrus_fbdev_fini(struct cirrus_device *cdev)
+{
+ if (!cdev->mode_info.gfbdev)
+ return;
+
+ cirrus_fbdev_destroy(cdev->ddev, cdev->mode_info.gfbdev);
+ kfree(cdev->mode_info.gfbdev);
+ cdev->mode_info.gfbdev = NULL;
+}
diff --git a/drivers/gpu/drm/cirrus/cirrus_framebuffer.c b/drivers/gpu/drm/cirrus/cirrus_framebuffer.c
new file mode 100644
index 0000000..6cc49f2
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_framebuffer.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#include "drmP.h"
+#include "drm.h"
+#include "drm_crtc_helper.h"
+
+#include "cirrus.h"
+#include "cirrus_drv.h"
+
+static void cirrus_user_framebuffer_destroy(struct drm_framebuffer *fb)
+{
+ drm_framebuffer_cleanup(fb);
+}
+
+static int cirrus_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ struct drm_file *file_priv,
+ unsigned int *handle)
+{
+ return 0;
+}
+
+static const struct drm_framebuffer_funcs cirrus_fb_funcs = {
+ .destroy = cirrus_user_framebuffer_destroy,
+ .create_handle = cirrus_user_framebuffer_create_handle,
+};
+
+int cirrus_framebuffer_init(struct drm_device *dev,
+ struct cirrus_framebuffer *gfb,
+ struct drm_mode_fb_cmd *mode_cmd)
+{
+ int ret = drm_framebuffer_init(dev, &gfb->base, &cirrus_fb_funcs);
+ if (ret) {
+ CIRRUS_ERROR("drm_framebuffer_init failed: %d\n", ret);
+ return ret;
+ }
+ drm_helper_mode_fill_fb_struct(&gfb->base, mode_cmd);
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/cirrus/cirrus_kms.c b/drivers/gpu/drm/cirrus/cirrus_kms.c
new file mode 100644
index 0000000..967033a
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_kms.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#include "drmP.h"
+#include "drm.h"
+
+#include "cirrus.h"
+#include "cirrus_drv.h"
+
+/*
+ * Functions here will be called by the core once it's bound the driver to
+ * a PCI device
+ */
+
+int cirrus_driver_load(struct drm_device *dev, unsigned long flags)
+{
+ struct cirrus_device *cdev;
+ int r;
+
+ cdev = kzalloc(sizeof(struct cirrus_device), GFP_KERNEL);
+ if (cdev == NULL)
+ return -ENOMEM;
+ dev->dev_private = (void *)cdev;
+
+ r = cirrus_device_init(cdev, dev, dev->pdev, flags);
+ if (r) {
+ dev_err(&dev->pdev->dev, "Fatal error during GPU init: %d\n", r);
+ goto out;
+ }
+
+ r = cirrus_modeset_init(cdev);
+ if (r)
+ dev_err(&dev->pdev->dev, "Fatal error during modeset init: %d\n", r);
+out:
+ if (r)
+ cirrus_driver_unload(dev);
+ return r;
+}
+
+int cirrus_driver_unload(struct drm_device *dev)
+{
+ struct cirrus_device *cdev = dev->dev_private;
+
+ if (cdev == NULL)
+ return 0;
+ cirrus_modeset_fini(cdev);
+ cirrus_device_fini(cdev);
+ kfree(cdev);
+ dev->dev_private = NULL;
+ return 0;
+}
diff --git a/drivers/gpu/drm/cirrus/cirrus_mode.h b/drivers/gpu/drm/cirrus/cirrus_mode.h
new file mode 100644
index 0000000..fec62ea
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_mode.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#ifndef __CIRRUS_MODE_H__
+#define __CIRRUS_MODE_H__
+
+#include "drmP.h"
+#include "drm.h"
+
+#define CIRRUS_MAX_FB_HEIGHT 4096
+#define CIRRUS_MAX_FB_WIDTH 4096
+
+#define CIRRUS_DPMS_CLEARED (-1)
+
+#define to_cirrus_crtc(x) container_of(x, struct cirrus_crtc, base)
+#define to_cirrus_encoder(x) container_of(x, struct cirrus_encoder, base)
+#define to_cirrus_framebuffer(x) container_of(x, struct cirrus_framebuffer, base)
+
+struct cirrus_crtc {
+ struct drm_crtc base;
+ u8 lut_r[256], lut_g[256], lut_b[256];
+ int last_dpms;
+ bool enabled;
+};
+
+struct cirrus_mode_info {
+ bool mode_config_initialized;
+ struct cirrus_crtc *crtc;
+ /* pointer to fbdev info structure */
+ struct cirrus_fbdev *gfbdev;
+};
+
+struct cirrus_encoder {
+ struct drm_encoder base;
+ int last_dpms;
+};
+
+struct cirrus_connector {
+ struct drm_connector base;
+};
+
+struct cirrus_framebuffer {
+ struct drm_framebuffer base;
+};
+
+#endif /* __CIRRUS_MODE_H__ */
diff --git a/drivers/gpu/drm/cirrus/cirrus_vga.c b/drivers/gpu/drm/cirrus/cirrus_vga.c
new file mode 100644
index 0000000..b07e086
--- /dev/null
+++ b/drivers/gpu/drm/cirrus/cirrus_vga.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2010 Matt Turner.
+ * Copyright 2011 Red Hat <mjg@redhat.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License version 2. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * Authors: Matthew Garrett
+ * Matt Turner
+ */
+#include "drmP.h"
+#include "drm.h"
+#include "drm_crtc_helper.h"
+
+#include <video/cirrus.h>
+
+#include "cirrus.h"
+#include "cirrus_drv.h"
+#include "cirrus_mode.h"
+
+static int cirrus_vga_get_modes(struct drm_connector *connector)
+{
+ /* Just add a static list of modes */
+ drm_add_modes_noedid(connector, 640, 480);
+ drm_add_modes_noedid(connector, 800, 600);
+ drm_add_modes_noedid(connector, 1024, 768);
+ drm_add_modes_noedid(connector, 1280, 1024);
+
+ return 4;
+}
+
+static int cirrus_vga_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ /* Any mode we've added is valid */
+ return MODE_OK;
+}
+
+struct drm_encoder *cirrus_connector_best_encoder(struct drm_connector
+ *connector)
+{
+ int enc_id = connector->encoder_ids[0];
+ struct drm_mode_object *obj;
+ struct drm_encoder *encoder;
+
+ /* pick the encoder ids */
+ if (enc_id) {
+ obj =
+ drm_mode_object_find(connector->dev, enc_id,
+ DRM_MODE_OBJECT_ENCODER);
+ if (!obj)
+ return NULL;
+ encoder = obj_to_encoder(obj);
+ return encoder;
+ }
+ return NULL;
+}
+
+static enum drm_connector_status cirrus_vga_detect(struct drm_connector
+ *connector, bool force)
+{
+ return connector_status_connected;
+}
+
+static void cirrus_connector_destroy(struct drm_connector *connector)
+{
+ drm_connector_cleanup(connector);
+ kfree(connector);
+}
+
+struct drm_connector_helper_funcs cirrus_vga_connector_helper_funcs = {
+ .get_modes = cirrus_vga_get_modes,
+ .mode_valid = cirrus_vga_mode_valid,
+ .best_encoder = cirrus_connector_best_encoder,
+};
+
+struct drm_connector_funcs cirrus_vga_connector_funcs = {
+ .dpms = drm_helper_connector_dpms,
+ .detect = cirrus_vga_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = cirrus_connector_destroy,
+};
+
+struct drm_connector *cirrus_vga_init(struct drm_device *dev)
+{
+ struct drm_connector *connector;
+ struct cirrus_connector *cirrus_connector;
+
+ cirrus_connector = kzalloc(sizeof(struct cirrus_connector), GFP_KERNEL);
+ if (!cirrus_connector)
+ return NULL;
+
+ connector = &cirrus_connector->base;
+
+ drm_connector_init(dev, connector,
+ &cirrus_vga_connector_funcs, DRM_MODE_CONNECTOR_VGA);
+
+ drm_connector_helper_add(connector, &cirrus_vga_connector_helper_funcs);
+
+ return connector;
+}
--
1.7.4.4
--

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