From c8b75bca92cbf064b9fa125fc74a85994452e935 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Mon, 2 Mar 2015 13:01:12 -0800 Subject: drm/vc4: Add KMS support for Raspberry Pi. This is enough for fbcon and bringing up X using xf86-video-modesetting. It doesn't support the 3D accelerator or power management yet. v2: Drop FB_HELPER select thanks to Archit's patches. Do manual init ordering instead of using the .load hook. Structure registration more like tegra's, but still using the typical "component" code. Drop no-op hooks for atomic_begin and mode_fixup() now that they're optional. Drop sentinel in Makefile. Fix minor style nits I noticed on another reread. v3: Use the new bcm2835 clk driver to manage pixel/HSM clocks instead of having a fixed video mode. Use exynos-style component driver matching instead of devicetree nodes to list the component driver instances. Rename compatibility strings to say bcm2835, and distinguish pv0/1/2. Clean up some h/vsync code, and add in interlaced mode setup. Fix up probe/bind error paths. Use bitops.h macros for vc4_regs.h v4: Include i2c.h, allow building under COMPILE_TEST, drop msleep now that other bugs have been fixed, add timeouts to cpu_relax() loops, rename hpd-gpio to hpd-gpios. Signed-off-by: Eric Anholt Acked-by: Daniel Vetter --- drivers/gpu/drm/vc4/vc4_kms.c | 54 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 drivers/gpu/drm/vc4/vc4_kms.c (limited to 'drivers/gpu/drm/vc4/vc4_kms.c') diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c new file mode 100644 index 0000000..c241c8f --- /dev/null +++ b/drivers/gpu/drm/vc4/vc4_kms.c @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2015 Broadcom + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/** + * DOC: VC4 KMS + * + * This is the general code for implementing KMS mode setting that + * doesn't clearly associate with any of the other objects (plane, + * crtc, HDMI encoder). + */ + +#include "drm_crtc.h" +#include "drm_atomic_helper.h" +#include "drm_crtc_helper.h" +#include "drm_plane_helper.h" +#include "drm_fb_cma_helper.h" +#include "vc4_drv.h" + +static const struct drm_mode_config_funcs vc4_mode_funcs = { + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, + .fb_create = drm_fb_cma_create, +}; + +int vc4_kms_load(struct drm_device *dev) +{ + int ret; + + ret = drm_vblank_init(dev, dev->mode_config.num_crtc); + if (ret < 0) { + dev_err(dev->dev, "failed to initialize vblank\n"); + return ret; + } + + dev->mode_config.max_width = 2048; + dev->mode_config.max_height = 2048; + dev->mode_config.funcs = &vc4_mode_funcs; + dev->mode_config.preferred_depth = 24; + + drm_mode_config_reset(dev); + + drm_fbdev_cma_init(dev, 32, + dev->mode_config.num_crtc, + dev->mode_config.num_connector); + + drm_kms_helper_poll_init(dev); + + return 0; +} -- cgit v1.1