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path: root/drivers/gpu/drm/arc/arcpgu_crtc.c
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Diffstat (limited to 'drivers/gpu/drm/arc/arcpgu_crtc.c')
-rw-r--r--drivers/gpu/drm/arc/arcpgu_crtc.c217
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;
-}
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-29 23:05:34 +0000