diff options
Diffstat (limited to 'drivers/media/platform/mtk-mdp/mtk_mdp_comp.c')
| -rw-r--r-- | drivers/media/platform/mtk-mdp/mtk_mdp_comp.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c deleted file mode 100644 index aa8f9fd1f1a2..000000000000 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * Copyright (c) 2016 MediaTek Inc. - * Author: Ming Hsiu Tsai <minghsiu.tsai@mediatek.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/clk.h> -#include <linux/device.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_platform.h> -#include <soc/mediatek/smi.h> - -#include "mtk_mdp_comp.h" - - -static const char * const mtk_mdp_comp_stem[MTK_MDP_COMP_TYPE_MAX] = { - "mdp_rdma", - "mdp_rsz", - "mdp_wdma", - "mdp_wrot", -}; - -struct mtk_mdp_comp_match { - enum mtk_mdp_comp_type type; - int alias_id; -}; - -static const struct mtk_mdp_comp_match mtk_mdp_matches[MTK_MDP_COMP_ID_MAX] = { - { MTK_MDP_RDMA, 0 }, - { MTK_MDP_RDMA, 1 }, - { MTK_MDP_RSZ, 0 }, - { MTK_MDP_RSZ, 1 }, - { MTK_MDP_RSZ, 2 }, - { MTK_MDP_WDMA, 0 }, - { MTK_MDP_WROT, 0 }, - { MTK_MDP_WROT, 1 }, -}; - -int mtk_mdp_comp_get_id(struct device *dev, struct device_node *node, - enum mtk_mdp_comp_type comp_type) -{ - int id = of_alias_get_id(node, mtk_mdp_comp_stem[comp_type]); - int i; - - for (i = 0; i < ARRAY_SIZE(mtk_mdp_matches); i++) { - if (comp_type == mtk_mdp_matches[i].type && - id == mtk_mdp_matches[i].alias_id) - return i; - } - - dev_err(dev, "Failed to get id. type: %d, id: %d\n", comp_type, id); - - return -EINVAL; -} - -void mtk_mdp_comp_clock_on(struct device *dev, struct mtk_mdp_comp *comp) -{ - int i, err; - - if (comp->larb_dev) { - err = mtk_smi_larb_get(comp->larb_dev); - if (err) - dev_err(dev, - "failed to get larb, err %d. type:%d id:%d\n", - err, comp->type, comp->id); - } - - for (i = 0; i < ARRAY_SIZE(comp->clk); i++) { - if (!comp->clk[i]) - continue; - err = clk_prepare_enable(comp->clk[i]); - if (err) - dev_err(dev, - "failed to enable clock, err %d. type:%d id:%d i:%d\n", - err, comp->type, comp->id, i); - } -} - -void mtk_mdp_comp_clock_off(struct device *dev, struct mtk_mdp_comp *comp) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(comp->clk); i++) { - if (!comp->clk[i]) - continue; - clk_disable_unprepare(comp->clk[i]); - } - - if (comp->larb_dev) - mtk_smi_larb_put(comp->larb_dev); -} - -int mtk_mdp_comp_init(struct device *dev, struct device_node *node, - struct mtk_mdp_comp *comp, enum mtk_mdp_comp_id comp_id) -{ - struct device_node *larb_node; - struct platform_device *larb_pdev; - int i; - - if (comp_id < 0 || comp_id >= MTK_MDP_COMP_ID_MAX) { - dev_err(dev, "Invalid comp_id %d\n", comp_id); - return -EINVAL; - } - - comp->dev_node = of_node_get(node); - comp->id = comp_id; - comp->type = mtk_mdp_matches[comp_id].type; - comp->regs = of_iomap(node, 0); - - for (i = 0; i < ARRAY_SIZE(comp->clk); i++) { - comp->clk[i] = of_clk_get(node, i); - - /* Only RDMA needs two clocks */ - if (comp->type != MTK_MDP_RDMA) - break; - } - - /* Only DMA capable components need the LARB property */ - comp->larb_dev = NULL; - if (comp->type != MTK_MDP_RDMA && - comp->type != MTK_MDP_WDMA && - comp->type != MTK_MDP_WROT) - return 0; - - larb_node = of_parse_phandle(node, "mediatek,larb", 0); - if (!larb_node) { - dev_err(dev, - "Missing mediadek,larb phandle in %s node\n", - node->full_name); - return -EINVAL; - } - - larb_pdev = of_find_device_by_node(larb_node); - if (!larb_pdev) { - dev_warn(dev, "Waiting for larb device %s\n", - larb_node->full_name); - of_node_put(larb_node); - return -EPROBE_DEFER; - } - of_node_put(larb_node); - - comp->larb_dev = &larb_pdev->dev; - - return 0; -} - -void mtk_mdp_comp_deinit(struct device *dev, struct mtk_mdp_comp *comp) -{ - of_node_put(comp->dev_node); -} |