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98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2020 Loongson Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*/
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/*
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* Authors:
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* Sui Jingfeng <suijingfeng@loongson.cn>
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*/
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#include <drm/drm_print.h>
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#include <drm/drm_of.h>
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#include <drm/drm_bridge.h>
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#include "lsdc_regs.h"
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#include "lsdc_drv.h"
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static void lsdc_hdmi_init(struct lsdc_device *ldev, unsigned int index)
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{
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if (index == 0) {
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/* Enable hdmi */
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lsdc_reg_write32(ldev, HDMI0_CTRL_REG, 0x280 | HDMI_EN | HDMI_PACKET_EN);
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/* hdmi zone idle */
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lsdc_reg_write32(ldev, HDMI0_ZONE_REG, 0x00400040);
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} else if (index == 1) {
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/* Enable hdmi */
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lsdc_reg_write32(ldev, HDMI1_CTRL_REG, 0x280 | HDMI_EN | HDMI_PACKET_EN);
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/* hdmi zone idle */
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lsdc_reg_write32(ldev, HDMI1_ZONE_REG, 0x00400040);
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}
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DRM_DEBUG_DRIVER("HDMI%d reset\n", index);
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}
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static void lsdc_encoder_reset(struct drm_encoder *encoder)
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{
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struct lsdc_device *ldev = to_lsdc(encoder->dev);
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int index = encoder->index;
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if (ldev->desc->chip == LSDC_CHIP_7A2000)
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lsdc_hdmi_init(ldev, index);
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}
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static const struct drm_encoder_funcs lsdc_encoder_funcs = {
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.reset = lsdc_encoder_reset,
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.destroy = drm_encoder_cleanup,
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};
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static int lsdc_get_encoder_type(struct drm_device *ddev, const unsigned int index)
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{
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if (index == 0)
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return DRM_MODE_ENCODER_DAC;
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if (index == 1)
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return DRM_MODE_ENCODER_TMDS;
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DRM_ERROR("%s: encoder index=%d overflow\n", __func__, index);
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return DRM_MODE_ENCODER_NONE;
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}
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int lsdc_encoder_init(struct drm_device *ddev,
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struct drm_encoder *encoder,
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unsigned int index)
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{
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int ret;
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encoder->possible_crtcs = BIT(index);
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encoder->possible_clones = BIT(1) | BIT(0);
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ret = drm_encoder_init(ddev, encoder, &lsdc_encoder_funcs,
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lsdc_get_encoder_type(ddev, index), NULL);
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return ret;
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}
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