aboutsummaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c')
-rw-r--r--drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c210
1 files changed, 210 insertions, 0 deletions
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c
new file mode 100644
index 000000000000..82a3d311e164
--- /dev/null
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c
@@ -0,0 +1,210 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * 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 <linux/clk.h>
+#include <linux/regmap.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+
+#include "fsl_dcu_drm_crtc.h"
+#include "fsl_dcu_drm_drv.h"
+#include "fsl_dcu_drm_plane.h"
+
+static void fsl_dcu_drm_crtc_atomic_begin(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
+{
+}
+
+static int fsl_dcu_drm_crtc_atomic_check(struct drm_crtc *crtc,
+ struct drm_crtc_state *state)
+{
+ return 0;
+}
+
+static void fsl_dcu_drm_crtc_atomic_flush(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
+{
+}
+
+static void fsl_dcu_drm_disable_crtc(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
+ int ret;
+
+ ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
+ DCU_MODE_DCU_MODE_MASK,
+ DCU_MODE_DCU_MODE(DCU_MODE_OFF));
+ if (ret)
+ dev_err(fsl_dev->dev, "Disable CRTC failed\n");
+ ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
+ DCU_UPDATE_MODE_READREG);
+ if (ret)
+ dev_err(fsl_dev->dev, "Enable CRTC failed\n");
+}
+
+static void fsl_dcu_drm_crtc_enable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
+ int ret;
+
+ ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
+ DCU_MODE_DCU_MODE_MASK,
+ DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
+ if (ret)
+ dev_err(fsl_dev->dev, "Enable CRTC failed\n");
+ ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
+ DCU_UPDATE_MODE_READREG);
+ if (ret)
+ dev_err(fsl_dev->dev, "Enable CRTC failed\n");
+}
+
+static bool fsl_dcu_drm_crtc_mode_fixup(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+static void fsl_dcu_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
+ struct drm_display_mode *mode = &crtc->state->mode;
+ unsigned int hbp, hfp, hsw, vbp, vfp, vsw, div, index;
+ unsigned long dcuclk;
+ int ret;
+
+ index = drm_crtc_index(crtc);
+ dcuclk = clk_get_rate(fsl_dev->clk);
+ div = dcuclk / mode->clock / 1000;
+
+ /* Configure timings: */
+ hbp = mode->htotal - mode->hsync_end;
+ hfp = mode->hsync_start - mode->hdisplay;
+ hsw = mode->hsync_end - mode->hsync_start;
+ vbp = mode->vtotal - mode->vsync_end;
+ vfp = mode->vsync_start - mode->vdisplay;
+ vsw = mode->vsync_end - mode->vsync_start;
+
+ ret = regmap_write(fsl_dev->regmap, DCU_HSYN_PARA,
+ DCU_HSYN_PARA_BP(hbp) |
+ DCU_HSYN_PARA_PW(hsw) |
+ DCU_HSYN_PARA_FP(hfp));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_VSYN_PARA,
+ DCU_VSYN_PARA_BP(vbp) |
+ DCU_VSYN_PARA_PW(vsw) |
+ DCU_VSYN_PARA_FP(vfp));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_DISP_SIZE,
+ DCU_DISP_SIZE_DELTA_Y(mode->vdisplay) |
+ DCU_DISP_SIZE_DELTA_X(mode->hdisplay));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_DIV_RATIO, div);
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_SYN_POL,
+ DCU_SYN_POL_INV_VS_LOW | DCU_SYN_POL_INV_HS_LOW);
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_BGND, DCU_BGND_R(0) |
+ DCU_BGND_G(0) | DCU_BGND_B(0));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_DCU_MODE,
+ DCU_MODE_BLEND_ITER(1) | DCU_MODE_RASTER_EN);
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_THRESHOLD,
+ DCU_THRESHOLD_LS_BF_VS(BF_VS_VAL) |
+ DCU_THRESHOLD_OUT_BUF_HIGH(BUF_MAX_VAL) |
+ DCU_THRESHOLD_OUT_BUF_LOW(BUF_MIN_VAL));
+ if (ret)
+ goto set_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
+ DCU_UPDATE_MODE_READREG);
+ if (ret)
+ goto set_failed;
+ return;
+set_failed:
+ dev_err(dev->dev, "set DCU register failed\n");
+}
+
+static const struct drm_crtc_helper_funcs fsl_dcu_drm_crtc_helper_funcs = {
+ .atomic_begin = fsl_dcu_drm_crtc_atomic_begin,
+ .atomic_check = fsl_dcu_drm_crtc_atomic_check,
+ .atomic_flush = fsl_dcu_drm_crtc_atomic_flush,
+ .disable = fsl_dcu_drm_disable_crtc,
+ .enable = fsl_dcu_drm_crtc_enable,
+ .mode_fixup = fsl_dcu_drm_crtc_mode_fixup,
+ .mode_set_nofb = fsl_dcu_drm_crtc_mode_set_nofb,
+};
+
+static const struct drm_crtc_funcs fsl_dcu_drm_crtc_funcs = {
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+ .destroy = drm_crtc_cleanup,
+ .page_flip = drm_atomic_helper_page_flip,
+ .reset = drm_atomic_helper_crtc_reset,
+ .set_config = drm_atomic_helper_set_config,
+};
+
+int fsl_dcu_drm_crtc_create(struct fsl_dcu_drm_device *fsl_dev)
+{
+ struct drm_plane *primary;
+ struct drm_crtc *crtc = &fsl_dev->crtc;
+ unsigned int i, j, reg_num;
+ int ret;
+
+ primary = fsl_dcu_drm_primary_create_plane(fsl_dev->drm);
+ ret = drm_crtc_init_with_planes(fsl_dev->drm, crtc, primary, NULL,
+ &fsl_dcu_drm_crtc_funcs);
+ if (ret < 0)
+ return ret;
+
+ drm_crtc_helper_add(crtc, &fsl_dcu_drm_crtc_helper_funcs);
+
+ if (!strcmp(fsl_dev->soc->name, "ls1021a"))
+ reg_num = LS1021A_LAYER_REG_NUM;
+ else
+ reg_num = VF610_LAYER_REG_NUM;
+ for (i = 0; i <= fsl_dev->soc->total_layer; i++) {
+ for (j = 0; j < reg_num; j++) {
+ ret = regmap_write(fsl_dev->regmap,
+ DCU_CTRLDESCLN(i, j), 0);
+ if (ret)
+ goto init_failed;
+ }
+ }
+ ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
+ DCU_MODE_DCU_MODE_MASK,
+ DCU_MODE_DCU_MODE(DCU_MODE_OFF));
+ if (ret)
+ goto init_failed;
+ ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
+ DCU_UPDATE_MODE_READREG);
+ if (ret)
+ goto init_failed;
+
+ return 0;
+init_failed:
+ dev_err(fsl_dev->dev, "init DCU register failed\n");
+ return ret;
+}