diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/shmobile/shmob_drm_plane.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/shmobile/shmob_drm_plane.c')
-rw-r--r-- | kernel/drivers/gpu/drm/shmobile/shmob_drm_plane.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/shmobile/shmob_drm_plane.c b/kernel/drivers/gpu/drm/shmobile/shmob_drm_plane.c new file mode 100644 index 000000000..1805bb23b --- /dev/null +++ b/kernel/drivers/gpu/drm/shmobile/shmob_drm_plane.c @@ -0,0 +1,263 @@ +/* + * shmob_drm_plane.c -- SH Mobile DRM Planes + * + * 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_drv.h" +#include "shmob_drm_kms.h" +#include "shmob_drm_plane.h" +#include "shmob_drm_regs.h" + +struct shmob_drm_plane { + struct drm_plane plane; + unsigned int index; + unsigned int alpha; + + const struct shmob_drm_format_info *format; + unsigned long dma[2]; + + unsigned int src_x; + unsigned int src_y; + unsigned int crtc_x; + unsigned int crtc_y; + unsigned int crtc_w; + unsigned int crtc_h; +}; + +#define to_shmob_plane(p) container_of(p, struct shmob_drm_plane, plane) + +static void shmob_drm_plane_compute_base(struct shmob_drm_plane *splane, + struct drm_framebuffer *fb, + int x, int y) +{ + struct drm_gem_cma_object *gem; + unsigned int bpp; + + bpp = splane->format->yuv ? 8 : splane->format->bpp; + gem = drm_fb_cma_get_gem_obj(fb, 0); + splane->dma[0] = gem->paddr + fb->offsets[0] + + y * fb->pitches[0] + x * bpp / 8; + + if (splane->format->yuv) { + bpp = splane->format->bpp - 8; + gem = drm_fb_cma_get_gem_obj(fb, 1); + splane->dma[1] = gem->paddr + fb->offsets[1] + + y / (bpp == 4 ? 2 : 1) * fb->pitches[1] + + x * (bpp == 16 ? 2 : 1); + } +} + +static void __shmob_drm_plane_setup(struct shmob_drm_plane *splane, + struct drm_framebuffer *fb) +{ + struct shmob_drm_device *sdev = splane->plane.dev->dev_private; + u32 format; + + /* TODO: Support ROP3 mode */ + format = LDBBSIFR_EN | (splane->alpha << LDBBSIFR_LAY_SHIFT); + + switch (splane->format->fourcc) { + case DRM_FORMAT_RGB565: + case DRM_FORMAT_NV21: + case DRM_FORMAT_NV61: + case DRM_FORMAT_NV42: + format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW; + break; + case DRM_FORMAT_RGB888: + case DRM_FORMAT_NV12: + case DRM_FORMAT_NV16: + case DRM_FORMAT_NV24: + format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB; + break; + case DRM_FORMAT_ARGB8888: + default: + format |= LDBBSIFR_SWPL; + break; + } + + switch (splane->format->fourcc) { + case DRM_FORMAT_RGB565: + format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16; + break; + case DRM_FORMAT_RGB888: + format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24; + break; + case DRM_FORMAT_ARGB8888: + format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32; + break; + case DRM_FORMAT_NV12: + case DRM_FORMAT_NV21: + format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420; + break; + case DRM_FORMAT_NV16: + case DRM_FORMAT_NV61: + format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422; + break; + case DRM_FORMAT_NV24: + case DRM_FORMAT_NV42: + format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444; + break; + } + +#define plane_reg_dump(sdev, splane, reg) \ + dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x 0x%08x\n", __func__, \ + splane->index, #reg, \ + lcdc_read(sdev, reg(splane->index)), \ + lcdc_read(sdev, reg(splane->index) + LCDC_SIDE_B_OFFSET)) + + plane_reg_dump(sdev, splane, LDBnBSIFR); + plane_reg_dump(sdev, splane, LDBnBSSZR); + plane_reg_dump(sdev, splane, LDBnBLOCR); + plane_reg_dump(sdev, splane, LDBnBSMWR); + plane_reg_dump(sdev, splane, LDBnBSAYR); + plane_reg_dump(sdev, splane, LDBnBSACR); + + lcdc_write(sdev, LDBCR, LDBCR_UPC(splane->index)); + dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index, + "LDBCR", lcdc_read(sdev, LDBCR)); + + lcdc_write(sdev, LDBnBSIFR(splane->index), format); + + lcdc_write(sdev, LDBnBSSZR(splane->index), + (splane->crtc_h << LDBBSSZR_BVSS_SHIFT) | + (splane->crtc_w << LDBBSSZR_BHSS_SHIFT)); + lcdc_write(sdev, LDBnBLOCR(splane->index), + (splane->crtc_y << LDBBLOCR_CVLC_SHIFT) | + (splane->crtc_x << LDBBLOCR_CHLC_SHIFT)); + lcdc_write(sdev, LDBnBSMWR(splane->index), + fb->pitches[0] << LDBBSMWR_BSMW_SHIFT); + + shmob_drm_plane_compute_base(splane, fb, splane->src_x, splane->src_y); + + lcdc_write(sdev, LDBnBSAYR(splane->index), splane->dma[0]); + if (splane->format->yuv) + lcdc_write(sdev, LDBnBSACR(splane->index), splane->dma[1]); + + lcdc_write(sdev, LDBCR, + LDBCR_UPF(splane->index) | LDBCR_UPD(splane->index)); + dev_dbg(sdev->ddev->dev, "%s(%u): %s 0x%08x\n", __func__, splane->index, + "LDBCR", lcdc_read(sdev, LDBCR)); + + plane_reg_dump(sdev, splane, LDBnBSIFR); + plane_reg_dump(sdev, splane, LDBnBSSZR); + plane_reg_dump(sdev, splane, LDBnBLOCR); + plane_reg_dump(sdev, splane, LDBnBSMWR); + plane_reg_dump(sdev, splane, LDBnBSAYR); + plane_reg_dump(sdev, splane, LDBnBSACR); +} + +void shmob_drm_plane_setup(struct drm_plane *plane) +{ + struct shmob_drm_plane *splane = to_shmob_plane(plane); + + if (plane->fb == NULL) + return; + + __shmob_drm_plane_setup(splane, plane->fb); +} + +static int +shmob_drm_plane_update(struct drm_plane *plane, struct drm_crtc *crtc, + struct drm_framebuffer *fb, int crtc_x, int crtc_y, + unsigned int crtc_w, unsigned int crtc_h, + uint32_t src_x, uint32_t src_y, + uint32_t src_w, uint32_t src_h) +{ + struct shmob_drm_plane *splane = to_shmob_plane(plane); + struct shmob_drm_device *sdev = plane->dev->dev_private; + const struct shmob_drm_format_info *format; + + format = shmob_drm_format_info(fb->pixel_format); + if (format == NULL) { + dev_dbg(sdev->dev, "update_plane: unsupported format %08x\n", + fb->pixel_format); + return -EINVAL; + } + + if (src_w >> 16 != crtc_w || src_h >> 16 != crtc_h) { + dev_dbg(sdev->dev, "%s: scaling not supported\n", __func__); + return -EINVAL; + } + + splane->format = format; + + splane->src_x = src_x >> 16; + splane->src_y = src_y >> 16; + splane->crtc_x = crtc_x; + splane->crtc_y = crtc_y; + splane->crtc_w = crtc_w; + splane->crtc_h = crtc_h; + + __shmob_drm_plane_setup(splane, fb); + return 0; +} + +static int shmob_drm_plane_disable(struct drm_plane *plane) +{ + struct shmob_drm_plane *splane = to_shmob_plane(plane); + struct shmob_drm_device *sdev = plane->dev->dev_private; + + splane->format = NULL; + + lcdc_write(sdev, LDBnBSIFR(splane->index), 0); + return 0; +} + +static void shmob_drm_plane_destroy(struct drm_plane *plane) +{ + shmob_drm_plane_disable(plane); + drm_plane_cleanup(plane); +} + +static const struct drm_plane_funcs shmob_drm_plane_funcs = { + .update_plane = shmob_drm_plane_update, + .disable_plane = shmob_drm_plane_disable, + .destroy = shmob_drm_plane_destroy, +}; + +static const uint32_t formats[] = { + DRM_FORMAT_RGB565, + DRM_FORMAT_RGB888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_NV12, + DRM_FORMAT_NV21, + DRM_FORMAT_NV16, + DRM_FORMAT_NV61, + DRM_FORMAT_NV24, + DRM_FORMAT_NV42, +}; + +int shmob_drm_plane_create(struct shmob_drm_device *sdev, unsigned int index) +{ + struct shmob_drm_plane *splane; + int ret; + + splane = devm_kzalloc(sdev->dev, sizeof(*splane), GFP_KERNEL); + if (splane == NULL) + return -ENOMEM; + + splane->index = index; + splane->alpha = 255; + + ret = drm_plane_init(sdev->ddev, &splane->plane, 1, + &shmob_drm_plane_funcs, formats, + ARRAY_SIZE(formats), false); + + return ret; +} |