211 lines
6.0 KiB
C
211 lines
6.0 KiB
C
/*
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* Copyright 2015 Freescale Semiconductor, Inc.
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*
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* Freescale DCU drm device driver
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/clk.h>
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#include <linux/regmap.h>
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#include <drm/drmP.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include "fsl_dcu_drm_crtc.h"
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#include "fsl_dcu_drm_drv.h"
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#include "fsl_dcu_drm_plane.h"
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static void fsl_dcu_drm_crtc_atomic_begin(struct drm_crtc *crtc,
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struct drm_crtc_state *old_crtc_state)
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{
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}
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static int fsl_dcu_drm_crtc_atomic_check(struct drm_crtc *crtc,
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struct drm_crtc_state *state)
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{
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return 0;
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}
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static void fsl_dcu_drm_crtc_atomic_flush(struct drm_crtc *crtc,
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struct drm_crtc_state *old_crtc_state)
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{
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}
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static void fsl_dcu_drm_disable_crtc(struct drm_crtc *crtc)
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{
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struct drm_device *dev = crtc->dev;
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struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
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int ret;
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ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
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DCU_MODE_DCU_MODE_MASK,
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DCU_MODE_DCU_MODE(DCU_MODE_OFF));
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if (ret)
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dev_err(fsl_dev->dev, "Disable CRTC failed\n");
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ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
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DCU_UPDATE_MODE_READREG);
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if (ret)
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dev_err(fsl_dev->dev, "Enable CRTC failed\n");
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}
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static void fsl_dcu_drm_crtc_enable(struct drm_crtc *crtc)
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{
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struct drm_device *dev = crtc->dev;
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struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
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int ret;
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ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
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DCU_MODE_DCU_MODE_MASK,
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DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
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if (ret)
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dev_err(fsl_dev->dev, "Enable CRTC failed\n");
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ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
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DCU_UPDATE_MODE_READREG);
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if (ret)
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dev_err(fsl_dev->dev, "Enable CRTC failed\n");
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}
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static bool fsl_dcu_drm_crtc_mode_fixup(struct drm_crtc *crtc,
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const struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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return true;
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}
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static void fsl_dcu_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
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{
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struct drm_device *dev = crtc->dev;
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struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
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struct drm_display_mode *mode = &crtc->state->mode;
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unsigned int hbp, hfp, hsw, vbp, vfp, vsw, div, index;
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unsigned long dcuclk;
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int ret;
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index = drm_crtc_index(crtc);
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dcuclk = clk_get_rate(fsl_dev->clk);
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div = dcuclk / mode->clock / 1000;
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/* Configure timings: */
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hbp = mode->htotal - mode->hsync_end;
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hfp = mode->hsync_start - mode->hdisplay;
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hsw = mode->hsync_end - mode->hsync_start;
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vbp = mode->vtotal - mode->vsync_end;
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vfp = mode->vsync_start - mode->vdisplay;
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vsw = mode->vsync_end - mode->vsync_start;
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ret = regmap_write(fsl_dev->regmap, DCU_HSYN_PARA,
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DCU_HSYN_PARA_BP(hbp) |
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DCU_HSYN_PARA_PW(hsw) |
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DCU_HSYN_PARA_FP(hfp));
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if (ret)
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goto set_failed;
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ret = regmap_write(fsl_dev->regmap, DCU_VSYN_PARA,
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DCU_VSYN_PARA_BP(vbp) |
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DCU_VSYN_PARA_PW(vsw) |
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DCU_VSYN_PARA_FP(vfp));
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if (ret)
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goto set_failed;
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ret = regmap_write(fsl_dev->regmap, DCU_DISP_SIZE,
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DCU_DISP_SIZE_DELTA_Y(mode->vdisplay) |
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DCU_DISP_SIZE_DELTA_X(mode->hdisplay));
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if (ret)
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goto set_failed;
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ret = regmap_write(fsl_dev->regmap, DCU_DIV_RATIO, div);
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if (ret)
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goto set_failed;
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ret = regmap_write(fsl_dev->regmap, DCU_SYN_POL,
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DCU_SYN_POL_INV_VS_LOW | DCU_SYN_POL_INV_HS_LOW);
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if (ret)
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goto set_failed;
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ret = regmap_write(fsl_dev->regmap, DCU_BGND, DCU_BGND_R(0) |
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DCU_BGND_G(0) | DCU_BGND_B(0));
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if (ret)
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goto set_failed;
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ret = regmap_write(fsl_dev->regmap, DCU_DCU_MODE,
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DCU_MODE_BLEND_ITER(1) | DCU_MODE_RASTER_EN);
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if (ret)
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goto set_failed;
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ret = regmap_write(fsl_dev->regmap, DCU_THRESHOLD,
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DCU_THRESHOLD_LS_BF_VS(BF_VS_VAL) |
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DCU_THRESHOLD_OUT_BUF_HIGH(BUF_MAX_VAL) |
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DCU_THRESHOLD_OUT_BUF_LOW(BUF_MIN_VAL));
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if (ret)
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goto set_failed;
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ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
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DCU_UPDATE_MODE_READREG);
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if (ret)
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goto set_failed;
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return;
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set_failed:
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dev_err(dev->dev, "set DCU register failed\n");
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}
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static const struct drm_crtc_helper_funcs fsl_dcu_drm_crtc_helper_funcs = {
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.atomic_begin = fsl_dcu_drm_crtc_atomic_begin,
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.atomic_check = fsl_dcu_drm_crtc_atomic_check,
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.atomic_flush = fsl_dcu_drm_crtc_atomic_flush,
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.disable = fsl_dcu_drm_disable_crtc,
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.enable = fsl_dcu_drm_crtc_enable,
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.mode_fixup = fsl_dcu_drm_crtc_mode_fixup,
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.mode_set_nofb = fsl_dcu_drm_crtc_mode_set_nofb,
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};
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static const struct drm_crtc_funcs fsl_dcu_drm_crtc_funcs = {
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.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
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.destroy = drm_crtc_cleanup,
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.page_flip = drm_atomic_helper_page_flip,
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.reset = drm_atomic_helper_crtc_reset,
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.set_config = drm_atomic_helper_set_config,
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};
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int fsl_dcu_drm_crtc_create(struct fsl_dcu_drm_device *fsl_dev)
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{
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struct drm_plane *primary;
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struct drm_crtc *crtc = &fsl_dev->crtc;
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unsigned int i, j, reg_num;
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int ret;
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primary = fsl_dcu_drm_primary_create_plane(fsl_dev->drm);
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ret = drm_crtc_init_with_planes(fsl_dev->drm, crtc, primary, NULL,
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&fsl_dcu_drm_crtc_funcs, NULL);
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if (ret < 0)
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return ret;
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drm_crtc_helper_add(crtc, &fsl_dcu_drm_crtc_helper_funcs);
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if (!strcmp(fsl_dev->soc->name, "ls1021a"))
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reg_num = LS1021A_LAYER_REG_NUM;
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else
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reg_num = VF610_LAYER_REG_NUM;
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for (i = 0; i <= fsl_dev->soc->total_layer; i++) {
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for (j = 0; j < reg_num; j++) {
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ret = regmap_write(fsl_dev->regmap,
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DCU_CTRLDESCLN(i, j), 0);
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if (ret)
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goto init_failed;
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}
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}
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ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
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DCU_MODE_DCU_MODE_MASK,
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DCU_MODE_DCU_MODE(DCU_MODE_OFF));
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if (ret)
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goto init_failed;
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ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
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DCU_UPDATE_MODE_READREG);
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if (ret)
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goto init_failed;
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return 0;
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init_failed:
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dev_err(fsl_dev->dev, "init DCU register failed\n");
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return ret;
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}
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