diff options
Diffstat (limited to 'drivers/media/platform/mediatek/mtk-vcodec/mtk_vcodec_dec_pm.c')
| -rw-r--r-- | drivers/media/platform/mediatek/mtk-vcodec/mtk_vcodec_dec_pm.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/drivers/media/platform/mediatek/mtk-vcodec/mtk_vcodec_dec_pm.c b/drivers/media/platform/mediatek/mtk-vcodec/mtk_vcodec_dec_pm.c new file mode 100644 index 000000000000..7e0c2644bf7b --- /dev/null +++ b/drivers/media/platform/mediatek/mtk-vcodec/mtk_vcodec_dec_pm.c @@ -0,0 +1,169 @@ +// 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_hw.h" +#include "mtk_vcodec_dec_pm.h" +#include "mtk_vcodec_util.h" + +int mtk_vcodec_init_dec_clk(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; + + 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); + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(mtk_vcodec_init_dec_clk); + +int mtk_vcodec_dec_pw_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx) +{ + struct mtk_vdec_hw_dev *subdev_dev; + struct mtk_vcodec_pm *pm; + int ret; + + if (vdec_dev->vdec_pdata->is_subdev_supported) { + subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx); + if (!subdev_dev) { + mtk_v4l2_err("Failed to get hw dev\n"); + return -EINVAL; + } + pm = &subdev_dev->pm; + } else { + pm = &vdec_dev->pm; + } + + ret = pm_runtime_resume_and_get(pm->dev); + if (ret) + mtk_v4l2_err("pm_runtime_resume_and_get fail %d", ret); + + return ret; +} +EXPORT_SYMBOL_GPL(mtk_vcodec_dec_pw_on); + +void mtk_vcodec_dec_pw_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx) +{ + struct mtk_vdec_hw_dev *subdev_dev; + struct mtk_vcodec_pm *pm; + int ret; + + if (vdec_dev->vdec_pdata->is_subdev_supported) { + subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx); + if (!subdev_dev) { + mtk_v4l2_err("Failed to get hw dev\n"); + return; + } + pm = &subdev_dev->pm; + } else { + pm = &vdec_dev->pm; + } + + ret = pm_runtime_put_sync(pm->dev); + if (ret) + mtk_v4l2_err("pm_runtime_put_sync fail %d", ret); +} +EXPORT_SYMBOL_GPL(mtk_vcodec_dec_pw_off); + +void mtk_vcodec_dec_clock_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx) +{ + struct mtk_vdec_hw_dev *subdev_dev; + struct mtk_vcodec_pm *pm; + struct mtk_vcodec_clk *dec_clk; + int ret, i; + + if (vdec_dev->vdec_pdata->is_subdev_supported) { + subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx); + if (!subdev_dev) { + mtk_v4l2_err("Failed to get hw dev\n"); + return; + } + pm = &subdev_dev->pm; + enable_irq(subdev_dev->dec_irq); + } else { + pm = &vdec_dev->pm; + enable_irq(vdec_dev->dec_irq); + } + + 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); +} +EXPORT_SYMBOL_GPL(mtk_vcodec_dec_clock_on); + +void mtk_vcodec_dec_clock_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx) +{ + struct mtk_vdec_hw_dev *subdev_dev; + struct mtk_vcodec_pm *pm; + struct mtk_vcodec_clk *dec_clk; + int i; + + if (vdec_dev->vdec_pdata->is_subdev_supported) { + subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx); + if (!subdev_dev) { + mtk_v4l2_err("Failed to get hw dev\n"); + return; + } + pm = &subdev_dev->pm; + disable_irq(subdev_dev->dec_irq); + } else { + pm = &vdec_dev->pm; + disable_irq(vdec_dev->dec_irq); + } + + 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); +} +EXPORT_SYMBOL_GPL(mtk_vcodec_dec_clock_off); |