| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2016 MediaTek Inc. |
| * Author: Tiffany Lin <tiffany.lin@mediatek.com> |
| */ |
| |
| #include <linux/clk.h> |
| #include <linux/interrupt.h> |
| #include <linux/of_address.h> |
| #include <linux/of_platform.h> |
| #include <linux/pm_runtime.h> |
| |
| #include "mtk_vcodec_dec_pm.h" |
| #include "mtk_vcodec_util.h" |
| |
| int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev) |
| { |
| struct platform_device *pdev; |
| struct mtk_vcodec_pm *pm; |
| struct mtk_vcodec_clk *dec_clk; |
| struct mtk_vcodec_clk_info *clk_info; |
| int i = 0, ret = 0; |
| |
| pdev = mtkdev->plat_dev; |
| pm = &mtkdev->pm; |
| pm->mtkdev = mtkdev; |
| dec_clk = &pm->vdec_clk; |
| pm->dev = &pdev->dev; |
| |
| dec_clk->clk_num = |
| of_property_count_strings(pdev->dev.of_node, "clock-names"); |
| if (dec_clk->clk_num > 0) { |
| dec_clk->clk_info = devm_kcalloc(&pdev->dev, |
| dec_clk->clk_num, sizeof(*clk_info), |
| GFP_KERNEL); |
| if (!dec_clk->clk_info) |
| return -ENOMEM; |
| } else { |
| mtk_v4l2_err("Failed to get vdec clock count"); |
| return -EINVAL; |
| } |
| |
| for (i = 0; i < dec_clk->clk_num; i++) { |
| clk_info = &dec_clk->clk_info[i]; |
| ret = of_property_read_string_index(pdev->dev.of_node, |
| "clock-names", i, &clk_info->clk_name); |
| if (ret) { |
| mtk_v4l2_err("Failed to get clock name id = %d", i); |
| return ret; |
| } |
| clk_info->vcodec_clk = devm_clk_get(&pdev->dev, |
| clk_info->clk_name); |
| if (IS_ERR(clk_info->vcodec_clk)) { |
| mtk_v4l2_err("devm_clk_get (%d)%s fail", i, |
| clk_info->clk_name); |
| return PTR_ERR(clk_info->vcodec_clk); |
| } |
| } |
| |
| pm_runtime_enable(&pdev->dev); |
| |
| return ret; |
| } |
| |
| void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev) |
| { |
| pm_runtime_disable(dev->pm.dev); |
| } |
| |
| static void mtk_vcodec_dec_pw_on(struct mtk_vcodec_dev *vdec_dev, |
| int comp_idx) |
| { |
| struct mtk_vcodec_dev *comp_dev; |
| struct mtk_vcodec_pm *pm; |
| int ret; |
| |
| comp_dev = mtk_vcodec_get_hw_dev(vdec_dev, comp_idx); |
| if (!comp_dev) { |
| mtk_v4l2_err("Failed to get hw dev\n"); |
| return; |
| } |
| pm = &comp_dev->pm; |
| ret = pm_runtime_resume_and_get(pm->dev); |
| if (ret < 0) |
| mtk_v4l2_err("pm_runtime_resume_and_get fail %d", ret); |
| } |
| |
| static void mtk_vcodec_dec_pw_off(struct mtk_vcodec_dev *vdec_dev, |
| int comp_idx) |
| { |
| struct mtk_vcodec_dev *comp_dev; |
| struct mtk_vcodec_pm *pm; |
| |
| comp_dev = mtk_vcodec_get_hw_dev(vdec_dev, comp_idx); |
| if (!comp_dev) { |
| mtk_v4l2_err("Failed to get hw dev\n"); |
| return; |
| } |
| pm = &comp_dev->pm; |
| pm_runtime_put_sync(pm->dev); |
| } |
| |
| static void mtk_vcodec_dec_clock_on(struct mtk_vcodec_dev *vdec_dev, |
| int comp_idx) |
| { |
| struct mtk_vcodec_dev *comp_dev; |
| struct mtk_vcodec_pm *pm; |
| struct mtk_vcodec_clk *dec_clk; |
| int ret, i; |
| |
| comp_dev = mtk_vcodec_get_hw_dev(vdec_dev, comp_idx); |
| if (!comp_dev) { |
| mtk_v4l2_err("Failed to get hw dev\n"); |
| return; |
| } |
| pm = &comp_dev->pm; |
| dec_clk = &pm->vdec_clk; |
| |
| for (i = 0; i < dec_clk->clk_num; i++) { |
| ret = clk_prepare_enable(dec_clk->clk_info[i].vcodec_clk); |
| if (ret) { |
| mtk_v4l2_err("clk_prepare_enable %d %s fail %d", i, |
| dec_clk->clk_info[i].clk_name, ret); |
| goto error; |
| } |
| } |
| return; |
| |
| error: |
| for (i -= 1; i >= 0; i--) |
| clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk); |
| } |
| |
| static void mtk_vcodec_dec_clock_off(struct mtk_vcodec_dev *vdec_dev, |
| int comp_idx) |
| { |
| struct mtk_vcodec_dev *comp_dev; |
| struct mtk_vcodec_pm *pm; |
| struct mtk_vcodec_clk *dec_clk; |
| int i; |
| |
| comp_dev = mtk_vcodec_get_hw_dev(vdec_dev, comp_idx); |
| if (!comp_dev) { |
| mtk_v4l2_err("Failed to get hw dev\n"); |
| return; |
| } |
| pm = &comp_dev->pm; |
| dec_clk = &pm->vdec_clk; |
| |
| for (i = dec_clk->clk_num - 1; i >= 0; i--) |
| clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk); |
| } |
| |
| static void mtk_vcodec_dec_enable_irq(struct mtk_vcodec_dev *vdec_dev, |
| int comp_idx) |
| { |
| struct mtk_vcodec_dev *comp_dev; |
| |
| comp_dev = mtk_vcodec_get_hw_dev(vdec_dev, comp_idx); |
| if (!comp_dev) { |
| mtk_v4l2_err("Failed to get hw dev\n"); |
| return; |
| } |
| |
| enable_irq(comp_dev->dec_irq); |
| } |
| |
| static void mtk_vcodec_dec_disable_irq(struct mtk_vcodec_dev *vdec_dev, |
| int comp_idx) |
| { |
| struct mtk_vcodec_dev *comp_dev; |
| |
| comp_dev = mtk_vcodec_get_hw_dev(vdec_dev, comp_idx); |
| if (!comp_dev) { |
| mtk_v4l2_err("Failed to get hw dev\n"); |
| return; |
| } |
| |
| disable_irq(comp_dev->dec_irq); |
| } |
| |
| void mtk_vcodec_dec_enable_hardware(struct mtk_vcodec_ctx *ctx, |
| int comp_idx) |
| { |
| mutex_lock(&ctx->dev->dec_mutex[comp_idx]); |
| if (VDEC_LAT_ARCH(ctx->dev->vdec_pdata->hw_arch) && |
| comp_idx == MTK_VDEC_CORE) { |
| mtk_vcodec_dec_pw_on(ctx->dev, MTK_VDEC_LAT0); |
| mtk_vcodec_dec_clock_on(ctx->dev, MTK_VDEC_LAT0); |
| } |
| mtk_vcodec_dec_pw_on(ctx->dev, comp_idx); |
| mtk_vcodec_dec_clock_on(ctx->dev, comp_idx); |
| mtk_vcodec_dec_enable_irq(ctx->dev, comp_idx); |
| } |
| |
| void mtk_vcodec_dec_disable_hardware(struct mtk_vcodec_ctx *ctx, |
| int comp_idx) |
| { |
| mtk_vcodec_dec_disable_irq(ctx->dev, comp_idx); |
| mtk_vcodec_dec_clock_off(ctx->dev, comp_idx); |
| mtk_vcodec_dec_pw_off(ctx->dev, comp_idx); |
| if (VDEC_LAT_ARCH(ctx->dev->vdec_pdata->hw_arch) && |
| comp_idx == MTK_VDEC_CORE) { |
| mtk_vcodec_dec_clock_off(ctx->dev, MTK_VDEC_LAT0); |
| mtk_vcodec_dec_pw_off(ctx->dev, MTK_VDEC_LAT0); |
| } |
| mutex_unlock(&ctx->dev->dec_mutex[comp_idx]); |
| } |