diff options
Diffstat (limited to 'drivers/gpu/drm/arc/arcpgu_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/arc/arcpgu_crtc.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c b/drivers/gpu/drm/arc/arcpgu_crtc.c deleted file mode 100644 index 895cdd991af6..000000000000 --- a/drivers/gpu/drm/arc/arcpgu_crtc.c +++ /dev/null @@ -1,217 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * ARC PGU DRM driver. - * - * Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com) - */ - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_device.h> -#include <drm/drm_fb_cma_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_plane_helper.h> -#include <drm/drm_probe_helper.h> -#include <linux/clk.h> -#include <linux/platform_data/simplefb.h> - -#include "arcpgu.h" -#include "arcpgu_regs.h" - -#define ENCODE_PGU_XY(x, y) ((((x) - 1) << 16) | ((y) - 1)) - -static const u32 arc_pgu_supported_formats[] = { - DRM_FORMAT_RGB565, - DRM_FORMAT_XRGB8888, - DRM_FORMAT_ARGB8888, -}; - -static void arc_pgu_set_pxl_fmt(struct drm_crtc *crtc) -{ - struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc); - const struct drm_framebuffer *fb = crtc->primary->state->fb; - uint32_t pixel_format = fb->format->format; - u32 format = DRM_FORMAT_INVALID; - int i; - u32 reg_ctrl; - - for (i = 0; i < ARRAY_SIZE(arc_pgu_supported_formats); i++) { - if (arc_pgu_supported_formats[i] == pixel_format) - format = arc_pgu_supported_formats[i]; - } - - if (WARN_ON(format == DRM_FORMAT_INVALID)) - return; - - reg_ctrl = arc_pgu_read(arcpgu, ARCPGU_REG_CTRL); - if (format == DRM_FORMAT_RGB565) - reg_ctrl &= ~ARCPGU_MODE_XRGB8888; - else - reg_ctrl |= ARCPGU_MODE_XRGB8888; - arc_pgu_write(arcpgu, ARCPGU_REG_CTRL, reg_ctrl); -} - -static const struct drm_crtc_funcs arc_pgu_crtc_funcs = { - .destroy = drm_crtc_cleanup, - .set_config = drm_atomic_helper_set_config, - .page_flip = drm_atomic_helper_page_flip, - .reset = drm_atomic_helper_crtc_reset, - .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, -}; - -static enum drm_mode_status arc_pgu_crtc_mode_valid(struct drm_crtc *crtc, - const struct drm_display_mode *mode) -{ - struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc); - long rate, clk_rate = mode->clock * 1000; - long diff = clk_rate / 200; /* +-0.5% allowed by HDMI spec */ - - rate = clk_round_rate(arcpgu->clk, clk_rate); - if ((max(rate, clk_rate) - min(rate, clk_rate) < diff) && (rate > 0)) - return MODE_OK; - - return MODE_NOCLOCK; -} - -static void arc_pgu_crtc_mode_set_nofb(struct drm_crtc *crtc) -{ - struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc); - struct drm_display_mode *m = &crtc->state->adjusted_mode; - u32 val; - - arc_pgu_write(arcpgu, ARCPGU_REG_FMT, - ENCODE_PGU_XY(m->crtc_htotal, m->crtc_vtotal)); - - arc_pgu_write(arcpgu, ARCPGU_REG_HSYNC, - ENCODE_PGU_XY(m->crtc_hsync_start - m->crtc_hdisplay, - m->crtc_hsync_end - m->crtc_hdisplay)); - - arc_pgu_write(arcpgu, ARCPGU_REG_VSYNC, - ENCODE_PGU_XY(m->crtc_vsync_start - m->crtc_vdisplay, - m->crtc_vsync_end - m->crtc_vdisplay)); - - arc_pgu_write(arcpgu, ARCPGU_REG_ACTIVE, - ENCODE_PGU_XY(m->crtc_hblank_end - m->crtc_hblank_start, - m->crtc_vblank_end - m->crtc_vblank_start)); - - val = arc_pgu_read(arcpgu, ARCPGU_REG_CTRL); - - if (m->flags & DRM_MODE_FLAG_PVSYNC) - val |= ARCPGU_CTRL_VS_POL_MASK << ARCPGU_CTRL_VS_POL_OFST; - else - val &= ~(ARCPGU_CTRL_VS_POL_MASK << ARCPGU_CTRL_VS_POL_OFST); - - if (m->flags & DRM_MODE_FLAG_PHSYNC) - val |= ARCPGU_CTRL_HS_POL_MASK << ARCPGU_CTRL_HS_POL_OFST; - else - val &= ~(ARCPGU_CTRL_HS_POL_MASK << ARCPGU_CTRL_HS_POL_OFST); - - arc_pgu_write(arcpgu, ARCPGU_REG_CTRL, val); - arc_pgu_write(arcpgu, ARCPGU_REG_STRIDE, 0); - arc_pgu_write(arcpgu, ARCPGU_REG_START_SET, 1); - - arc_pgu_set_pxl_fmt(crtc); - - clk_set_rate(arcpgu->clk, m->crtc_clock * 1000); -} - -static void arc_pgu_crtc_atomic_enable(struct drm_crtc *crtc, - struct drm_atomic_state *state) -{ - struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc); - - clk_prepare_enable(arcpgu->clk); - arc_pgu_write(arcpgu, ARCPGU_REG_CTRL, - arc_pgu_read(arcpgu, ARCPGU_REG_CTRL) | - ARCPGU_CTRL_ENABLE_MASK); -} - -static void arc_pgu_crtc_atomic_disable(struct drm_crtc *crtc, - struct drm_atomic_state *state) -{ - struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc); - - clk_disable_unprepare(arcpgu->clk); - arc_pgu_write(arcpgu, ARCPGU_REG_CTRL, - arc_pgu_read(arcpgu, ARCPGU_REG_CTRL) & - ~ARCPGU_CTRL_ENABLE_MASK); -} - -static const struct drm_crtc_helper_funcs arc_pgu_crtc_helper_funcs = { - .mode_valid = arc_pgu_crtc_mode_valid, - .mode_set_nofb = arc_pgu_crtc_mode_set_nofb, - .atomic_enable = arc_pgu_crtc_atomic_enable, - .atomic_disable = arc_pgu_crtc_atomic_disable, -}; - -static void arc_pgu_plane_atomic_update(struct drm_plane *plane, - struct drm_plane_state *state) -{ - struct arcpgu_drm_private *arcpgu; - struct drm_gem_cma_object *gem; - - if (!plane->state->crtc || !plane->state->fb) - return; - - arcpgu = crtc_to_arcpgu_priv(plane->state->crtc); - gem = drm_fb_cma_get_gem_obj(plane->state->fb, 0); - arc_pgu_write(arcpgu, ARCPGU_REG_BUF0_ADDR, gem->paddr); -} - -static const struct drm_plane_helper_funcs arc_pgu_plane_helper_funcs = { - .atomic_update = arc_pgu_plane_atomic_update, -}; - -static const struct drm_plane_funcs arc_pgu_plane_funcs = { - .update_plane = drm_atomic_helper_update_plane, - .disable_plane = drm_atomic_helper_disable_plane, - .destroy = drm_plane_cleanup, - .reset = drm_atomic_helper_plane_reset, - .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, -}; - -static struct drm_plane *arc_pgu_plane_init(struct drm_device *drm) -{ - struct arcpgu_drm_private *arcpgu = drm->dev_private; - struct drm_plane *plane = NULL; - int ret; - - plane = devm_kzalloc(drm->dev, sizeof(*plane), GFP_KERNEL); - if (!plane) - return ERR_PTR(-ENOMEM); - - ret = drm_universal_plane_init(drm, plane, 0xff, &arc_pgu_plane_funcs, - arc_pgu_supported_formats, - ARRAY_SIZE(arc_pgu_supported_formats), - NULL, - DRM_PLANE_TYPE_PRIMARY, NULL); - if (ret) - return ERR_PTR(ret); - - drm_plane_helper_add(plane, &arc_pgu_plane_helper_funcs); - arcpgu->plane = plane; - - return plane; -} - -int arc_pgu_setup_crtc(struct drm_device *drm) -{ - struct arcpgu_drm_private *arcpgu = drm->dev_private; - struct drm_plane *primary; - int ret; - - primary = arc_pgu_plane_init(drm); - if (IS_ERR(primary)) - return PTR_ERR(primary); - - ret = drm_crtc_init_with_planes(drm, &arcpgu->crtc, primary, NULL, - &arc_pgu_crtc_funcs, NULL); - if (ret) { - drm_plane_cleanup(primary); - return ret; - } - - drm_crtc_helper_add(&arcpgu->crtc, &arc_pgu_crtc_helper_funcs); - return 0; -} |