clk-mt2712-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: Weiyi Lu <weiyi.lu@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/mt2712-clk.h>
  11. static const struct mtk_gate_regs vdec0_cg_regs = {
  12. .set_ofs = 0x0,
  13. .clr_ofs = 0x4,
  14. .sta_ofs = 0x0,
  15. };
  16. static const struct mtk_gate_regs vdec1_cg_regs = {
  17. .set_ofs = 0x8,
  18. .clr_ofs = 0xc,
  19. .sta_ofs = 0x8,
  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. /* VDEC0 */
  39. GATE_VDEC0(CLK_VDEC_CKEN, "vdec_cken", "vdec_sel", 0),
  40. /* VDEC1 */
  41. GATE_VDEC1(CLK_VDEC_LARB1_CKEN, "vdec_larb1_cken", "vdec_sel", 0),
  42. GATE_VDEC1(CLK_VDEC_IMGRZ_CKEN, "vdec_imgrz_cken", "vdec_sel", 1),
  43. };
  44. static int clk_mt2712_vdec_probe(struct platform_device *pdev)
  45. {
  46. struct clk_onecell_data *clk_data;
  47. int r;
  48. struct device_node *node = pdev->dev.of_node;
  49. clk_data = mtk_alloc_clk_data(CLK_VDEC_NR_CLK);
  50. mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
  51. clk_data);
  52. r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  53. if (r != 0)
  54. pr_err("%s(): could not register clock provider: %d\n",
  55. __func__, r);
  56. return r;
  57. }
  58. static const struct of_device_id of_match_clk_mt2712_vdec[] = {
  59. { .compatible = "mediatek,mt2712-vdecsys", },
  60. {}
  61. };
  62. static struct platform_driver clk_mt2712_vdec_drv = {
  63. .probe = clk_mt2712_vdec_probe,
  64. .driver = {
  65. .name = "clk-mt2712-vdec",
  66. .of_match_table = of_match_clk_mt2712_vdec,
  67. },
  68. };
  69. builtin_platform_driver(clk_mt2712_vdec_drv);