diff options
Diffstat (limited to 'drivers/clk/mediatek/clk-mt2701-img.c')
| -rw-r--r-- | drivers/clk/mediatek/clk-mt2701-img.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mt2701-img.c b/drivers/clk/mediatek/clk-mt2701-img.c new file mode 100644 index 000000000..b7441c98b --- /dev/null +++ b/drivers/clk/mediatek/clk-mt2701-img.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2014 MediaTek Inc. + * Author: Shunli Wang <shunli.wang@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-provider.h> +#include <linux/platform_device.h> + +#include "clk-mtk.h" +#include "clk-gate.h" + +#include <dt-bindings/clock/mt2701-clk.h> + +static const struct mtk_gate_regs img_cg_regs = { + .set_ofs = 0x0004, + .clr_ofs = 0x0008, + .sta_ofs = 0x0000, +}; + +#define GATE_IMG(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = &img_cg_regs, \ + .shift = _shift, \ + .ops = &mtk_clk_gate_ops_setclr, \ + } + +static const struct mtk_gate img_clks[] = { + GATE_IMG(CLK_IMG_SMI_COMM, "img_smi_comm", "mm_sel", 0), + GATE_IMG(CLK_IMG_RESZ, "img_resz", "mm_sel", 1), + GATE_IMG(CLK_IMG_JPGDEC_SMI, "img_jpgdec_smi", "mm_sel", 5), + GATE_IMG(CLK_IMG_JPGDEC, "img_jpgdec", "mm_sel", 6), + GATE_IMG(CLK_IMG_VENC_LT, "img_venc_lt", "mm_sel", 8), + GATE_IMG(CLK_IMG_VENC, "img_venc", "mm_sel", 9), +}; + +static const struct of_device_id of_match_clk_mt2701_img[] = { + { .compatible = "mediatek,mt2701-imgsys", }, + {} +}; + +static int clk_mt2701_img_probe(struct platform_device *pdev) +{ + struct clk_onecell_data *clk_data; + int r; + struct device_node *node = pdev->dev.of_node; + + clk_data = mtk_alloc_clk_data(CLK_IMG_NR); + + mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks), + clk_data); + + r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); + if (r) + dev_err(&pdev->dev, + "could not register clock provider: %s: %d\n", + pdev->name, r); + + return r; +} + +static struct platform_driver clk_mt2701_img_drv = { + .probe = clk_mt2701_img_probe, + .driver = { + .name = "clk-mt2701-img", + .of_match_table = of_match_clk_mt2701_img, + }, +}; + +builtin_platform_driver(clk_mt2701_img_drv); |