diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-15 20:42:10 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-15 20:42:10 -0800 |
commit | e60e1ee60630cafef5e430c2ae364877e061d980 (patch) | |
tree | 816aeef8fe8d4a2c6a1ebbc7a350839bac8dd4c2 /drivers/gpu/drm/tve200/tve200_drv.c | |
parent | 5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a (diff) | |
parent | f150891fd9878ef0d9197c4e8451ce67c3bdd014 (diff) | |
download | linux-stable-e60e1ee60630cafef5e430c2ae364877e061d980.tar.gz linux-stable-e60e1ee60630cafef5e430c2ae364877e061d980.tar.bz2 linux-stable-e60e1ee60630cafef5e430c2ae364877e061d980.zip |
Merge tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"This is the main drm pull request for v4.15.
Core:
- Atomic object lifetime fixes
- Atomic iterator improvements
- Sparse/smatch fixes
- Legacy kms ioctls to be interruptible
- EDID override improvements
- fb/gem helper cleanups
- Simple outreachy patches
- Documentation improvements
- Fix dma-buf rcu races
- DRM mode object leasing for improving VR use cases.
- vgaarb improvements for non-x86 platforms.
New driver:
- tve200: Faraday Technology TVE200 block.
This "TV Encoder" encodes a ITU-T BT.656 stream and can be found in
the StorLink SL3516 (later Cortina Systems CS3516) as well as the
Grain Media GM8180.
New bridges:
- SiI9234 support
New panels:
- S6E63J0X03, OTM8009A, Seiko 43WVF1G, 7" rpi touch panel, Toshiba
LT089AC19000, Innolux AT043TN24
i915:
- Remove Coffeelake from alpha support
- Cannonlake workarounds
- Infoframe refactoring for DisplayPort
- VBT updates
- DisplayPort vswing/emph/buffer translation refactoring
- CCS fixes
- Restore GPU clock boost on missed vblanks
- Scatter list updates for userptr allocations
- Gen9+ transition watermarks
- Display IPC (Isochronous Priority Control)
- Private PAT management
- GVT: improved error handling and pci config sanitizing
- Execlist refactoring
- Transparent Huge Page support
- User defined priorities support
- HuC/GuC firmware refactoring
- DP MST fixes
- eDP power sequencing fixes
- Use RCU instead of stop_machine
- PSR state tracking support
- Eviction fixes
- BDW DP aux channel timeout fixes
- LSPCON fixes
- Cannonlake PLL fixes
amdgpu:
- Per VM BO support
- Powerplay cleanups
- CI powerplay support
- PASID mgr for kfd
- SR-IOV fixes
- initial GPU reset for vega10
- Prime mmap support
- TTM updates
- Clock query interface for Raven
- Fence to handle ioctl
- UVD encode ring support on Polaris
- Transparent huge page DMA support
- Compute LRU pipe tweaks
- BO flag to allow buffers to opt out of implicit sync
- CTX priority setting API
- VRAM lost infrastructure plumbing
qxl:
- fix flicker since atomic rework
amdkfd:
- Further improvements from internal AMD tree
- Usermode events
- Drop radeon support
nouveau:
- Pascal temperature sensor support
- Improved BAR2 handling
- MMU rework to support Pascal MMU
exynos:
- Improved HDMI/mixer support
- HDMI audio interface support
tegra:
- Prep work for tegra186
- Cleanup/fixes
msm:
- Preemption support for a5xx
- Display fixes for 8x96 (snapdragon 820)
- Async cursor plane fixes
- FW loading rework
- GPU debugging improvements
vc4:
- Prep for DSI panels
- fix T-format tiling scanout
- New madvise ioctl
Rockchip:
- LVDS support
omapdrm:
- omap4 HDMI CEC support
etnaviv:
- GPU performance counters groundwork
sun4i:
- refactor driver load + TCON backend
- HDMI improvements
- A31 support
- Misc fixes
udl:
- Probe/EDID read fixes.
tilcdc:
- Misc fixes.
pl111:
- Support more variants
adv7511:
- Improve EDID handling.
- HDMI CEC support
sii8620:
- Add remote control support"
* tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux: (1480 commits)
drm/rockchip: analogix_dp: Use mutex rather than spinlock
drm/mode_object: fix documentation for object lookups.
drm/i915: Reorder context-close to avoid calling i915_vma_close() under RCU
drm/i915: Move init_clock_gating() back to where it was
drm/i915: Prune the reservation shared fence array
drm/i915: Idle the GPU before shinking everything
drm/i915: Lock llist_del_first() vs llist_del_all()
drm/i915: Calculate ironlake intermediate watermarks correctly, v2.
drm/i915: Disable lazy PPGTT page table optimization for vGPU
drm/i915/execlists: Remove the priority "optimisation"
drm/i915: Filter out spurious execlists context-switch interrupts
drm/amdgpu: use irq-safe lock for kiq->ring_lock
drm/amdgpu: bypass lru touch for KIQ ring submission
drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()
drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()
drm/amd/powerplay: initialize a variable before using it
drm/amd/powerplay: suppress KASAN out of bounds warning in vega10_populate_all_memory_levels
drm/amd/amdgpu: fix evicted VRAM bo adjudgement condition
drm/vblank: Tune drm_crtc_accurate_vblank_count() WARN down to a debug
drm/rockchip: add CONFIG_OF dependency for lvds
...
Diffstat (limited to 'drivers/gpu/drm/tve200/tve200_drv.c')
-rw-r--r-- | drivers/gpu/drm/tve200/tve200_drv.c | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tve200/tve200_drv.c b/drivers/gpu/drm/tve200/tve200_drv.c new file mode 100644 index 000000000000..bd6c9454d767 --- /dev/null +++ b/drivers/gpu/drm/tve200/tve200_drv.c @@ -0,0 +1,303 @@ +/* + * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org> + * Parts of this file were based on sources as follows: + * + * Copyright (C) 2006-2008 Intel Corporation + * Copyright (C) 2007 Amos Lee <amos_lee@storlinksemi.com> + * Copyright (C) 2007 Dave Airlie <airlied@linux.ie> + * Copyright (C) 2011 Texas Instruments + * Copyright (C) 2017 Eric Anholt + * + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms of + * such GNU licence. + */ + +/** + * DOC: Faraday TV Encoder TVE200 DRM Driver + * + * The Faraday TV Encoder TVE200 is also known as the Gemini TV Interface + * Controller (TVC) and is found in the Gemini Chipset from Storlink + * Semiconductor (later Storm Semiconductor, later Cortina Systems) + * but also in the Grain Media GM8180 chipset. On the Gemini the module + * is connected to 8 data lines and a single clock line, comprising an + * 8-bit BT.656 interface. + * + * This is a very basic YUV display driver. The datasheet specifies that + * it supports the ITU BT.656 standard. It requires a 27 MHz clock which is + * the hallmark of any TV encoder supporting both PAL and NTSC. + * + * This driver exposes a standard KMS interface for this TV encoder. + */ + +#include <linux/clk.h> +#include <linux/dma-buf.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/shmem_fs.h> +#include <linux/slab.h> +#include <linux/version.h> + +#include <drm/drmP.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_gem_cma_helper.h> +#include <drm/drm_gem_framebuffer_helper.h> +#include <drm/drm_fb_cma_helper.h> +#include <drm/drm_panel.h> +#include <drm/drm_of.h> +#include <drm/drm_bridge.h> + +#include "tve200_drm.h" + +#define DRIVER_DESC "DRM module for Faraday TVE200" + +static const struct drm_mode_config_funcs mode_config_funcs = { + .fb_create = drm_gem_fb_create, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, +}; + +static int tve200_modeset_init(struct drm_device *dev) +{ + struct drm_mode_config *mode_config; + struct tve200_drm_dev_private *priv = dev->dev_private; + struct drm_panel *panel; + struct drm_bridge *bridge; + int ret = 0; + + drm_mode_config_init(dev); + mode_config = &dev->mode_config; + mode_config->funcs = &mode_config_funcs; + mode_config->min_width = 352; + mode_config->max_width = 720; + mode_config->min_height = 240; + mode_config->max_height = 576; + + ret = drm_of_find_panel_or_bridge(dev->dev->of_node, + 0, 0, &panel, &bridge); + if (ret && ret != -ENODEV) + return ret; + if (panel) { + bridge = drm_panel_bridge_add(panel, + DRM_MODE_CONNECTOR_Unknown); + if (IS_ERR(bridge)) { + ret = PTR_ERR(bridge); + goto out_bridge; + } + } else { + /* + * TODO: when we are using a different bridge than a panel + * (such as a dumb VGA connector) we need to devise a different + * method to get the connector out of the bridge. + */ + dev_err(dev->dev, "the bridge is not a panel\n"); + goto out_bridge; + } + + ret = tve200_display_init(dev); + if (ret) { + dev_err(dev->dev, "failed to init display\n"); + goto out_bridge; + } + + ret = drm_simple_display_pipe_attach_bridge(&priv->pipe, + bridge); + if (ret) { + dev_err(dev->dev, "failed to attach bridge\n"); + goto out_bridge; + } + + priv->panel = panel; + priv->connector = panel->connector; + priv->bridge = bridge; + + dev_info(dev->dev, "attached to panel %s\n", + dev_name(panel->dev)); + + ret = drm_vblank_init(dev, 1); + if (ret) { + dev_err(dev->dev, "failed to init vblank\n"); + goto out_bridge; + } + + drm_mode_config_reset(dev); + + /* + * Passing in 16 here will make the RGB656 mode the default + * Passing in 32 will use XRGB8888 mode + */ + priv->fbdev = drm_fbdev_cma_init(dev, 16, + dev->mode_config.num_connector); + drm_kms_helper_poll_init(dev); + + goto finish; + +out_bridge: + if (panel) + drm_panel_bridge_remove(bridge); + drm_mode_config_cleanup(dev); +finish: + return ret; +} + +DEFINE_DRM_GEM_CMA_FOPS(drm_fops); + +static void tve200_lastclose(struct drm_device *dev) +{ + struct tve200_drm_dev_private *priv = dev->dev_private; + + drm_fbdev_cma_restore_mode(priv->fbdev); +} + +static struct drm_driver tve200_drm_driver = { + .driver_features = + DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC, + .lastclose = tve200_lastclose, + .ioctls = NULL, + .fops = &drm_fops, + .name = "tve200", + .desc = DRIVER_DESC, + .date = "20170703", + .major = 1, + .minor = 0, + .patchlevel = 0, + .dumb_create = drm_gem_cma_dumb_create, + .gem_free_object_unlocked = drm_gem_cma_free_object, + .gem_vm_ops = &drm_gem_cma_vm_ops, + + .enable_vblank = tve200_enable_vblank, + .disable_vblank = tve200_disable_vblank, + + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_import = drm_gem_prime_import, + .gem_prime_export = drm_gem_prime_export, + .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, + .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, + .gem_prime_vmap = drm_gem_cma_prime_vmap, + .gem_prime_vunmap = drm_gem_cma_prime_vunmap, + .gem_prime_mmap = drm_gem_cma_prime_mmap, +}; + +static int tve200_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct tve200_drm_dev_private *priv; + struct drm_device *drm; + struct resource *res; + int irq; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + drm = drm_dev_alloc(&tve200_drm_driver, dev); + if (IS_ERR(drm)) + return PTR_ERR(drm); + platform_set_drvdata(pdev, drm); + priv->drm = drm; + drm->dev_private = priv; + + /* Clock the silicon so we can access the registers */ + priv->pclk = devm_clk_get(dev, "PCLK"); + if (IS_ERR(priv->pclk)) { + dev_err(dev, "unable to get PCLK\n"); + ret = PTR_ERR(priv->pclk); + goto dev_unref; + } + ret = clk_prepare_enable(priv->pclk); + if (ret) { + dev_err(dev, "failed to enable PCLK\n"); + goto dev_unref; + } + + /* This clock is for the pixels (27MHz) */ + priv->clk = devm_clk_get(dev, "TVE"); + if (IS_ERR(priv->clk)) { + dev_err(dev, "unable to get TVE clock\n"); + ret = PTR_ERR(priv->clk); + goto clk_disable; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->regs = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->regs)) { + dev_err(dev, "%s failed mmio\n", __func__); + ret = -EINVAL; + goto clk_disable; + } + + irq = platform_get_irq(pdev, 0); + if (!irq) { + ret = -EINVAL; + goto clk_disable; + } + + /* turn off interrupts before requesting the irq */ + writel(0, priv->regs + TVE200_INT_EN); + + ret = devm_request_irq(dev, irq, tve200_irq, 0, "tve200", priv); + if (ret) { + dev_err(dev, "failed to request irq %d\n", ret); + goto clk_disable; + } + + ret = tve200_modeset_init(drm); + if (ret) + goto clk_disable; + + ret = drm_dev_register(drm, 0); + if (ret < 0) + goto clk_disable; + + return 0; + +clk_disable: + clk_disable_unprepare(priv->pclk); +dev_unref: + drm_dev_unref(drm); + return ret; +} + +static int tve200_remove(struct platform_device *pdev) +{ + struct drm_device *drm = platform_get_drvdata(pdev); + struct tve200_drm_dev_private *priv = drm->dev_private; + + drm_dev_unregister(drm); + if (priv->fbdev) + drm_fbdev_cma_fini(priv->fbdev); + if (priv->panel) + drm_panel_bridge_remove(priv->bridge); + drm_mode_config_cleanup(drm); + clk_disable_unprepare(priv->pclk); + drm_dev_unref(drm); + + return 0; +} + +static const struct of_device_id tve200_of_match[] = { + { + .compatible = "faraday,tve200", + }, + {}, +}; + +static struct platform_driver tve200_driver = { + .driver = { + .name = "tve200", + .of_match_table = of_match_ptr(tve200_of_match), + }, + .probe = tve200_probe, + .remove = tve200_remove, +}; +module_platform_driver(tve200_driver); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>"); +MODULE_LICENSE("GPL"); |