clk-mt6797-vdec.c 2.0 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * Copyright (c) 2017 MediaTek Inc.
  4. * Author: Kevin-CW Chen <kevin-cw.chen@mediatek.com>
  5. */
  6. #include <linux/clk-provider.h>
  7. #include <linux/platform_device.h>
  8. #include "clk-mtk.h"
  9. #include "clk-gate.h"
  10. #include <dt-bindings/clock/mt6797-clk.h>
  11. static const struct mtk_gate_regs vdec0_cg_regs = {
  12. .set_ofs = 0x0000,
  13. .clr_ofs = 0x0004,
  14. .sta_ofs = 0x0000,
  15. };
  16. static const struct mtk_gate_regs vdec1_cg_regs = {
  17. .set_ofs = 0x0008,
  18. .clr_ofs = 0x000c,
  19. .sta_ofs = 0x0008,
  20. };
  21. #define GATE_VDEC0(_id, _name, _parent, _shift) { \
  22. .id = _id, \
  23. .name = _name, \
  24. .parent_name = _parent, \
  25. .regs = &vdec0_cg_regs, \
  26. .shift = _shift, \
  27. .ops = &mtk_clk_gate_ops_setclr_inv, \
  28. }
  29. #define GATE_VDEC1(_id, _name, _parent, _shift) { \
  30. .id = _id, \
  31. .name = _name, \
  32. .parent_name = _parent, \
  33. .regs = &vdec1_cg_regs, \
  34. .shift = _shift, \
  35. .ops = &mtk_clk_gate_ops_setclr_inv, \
  36. }
  37. static const struct mtk_gate vdec_clks[] = {
  38. GATE_VDEC0(CLK_VDEC_CKEN_ENG, "vdec_cken_eng", "vdec_sel", 8),
  39. GATE_VDEC0(CLK_VDEC_ACTIVE, "vdec_active", "vdec_sel", 4),
  40. GATE_VDEC0(CLK_VDEC_CKEN, "vdec_cken", "vdec_sel", 0),
  41. GATE_VDEC1(CLK_VDEC_LARB1_CKEN, "vdec_larb1_cken", "mm_sel", 0),
  42. };
  43. static const struct of_device_id of_match_clk_mt6797_vdec[] = {
  44. { .compatible = "mediatek,mt6797-vdecsys", },
  45. {}
  46. };
  47. static int clk_mt6797_vdec_probe(struct platform_device *pdev)
  48. {
  49. struct clk_onecell_data *clk_data;
  50. int r;
  51. struct device_node *node = pdev->dev.of_node;
  52. clk_data = mtk_alloc_clk_data(CLK_VDEC_NR);
  53. mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
  54. clk_data);
  55. r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  56. if (r)
  57. dev_err(&pdev->dev,
  58. "could not register clock provider: %s: %d\n",
  59. pdev->name, r);
  60. return r;
  61. }
  62. static struct platform_driver clk_mt6797_vdec_drv = {
  63. .probe = clk_mt6797_vdec_probe,
  64. .driver = {
  65. .name = "clk-mt6797-vdec",
  66. .of_match_table = of_match_clk_mt6797_vdec,
  67. },
  68. };
  69. builtin_platform_driver(clk_mt6797_vdec_drv);