diff options
Diffstat (limited to 'drivers/clk/hisilicon/clk-hi3519.c')
| -rw-r--r-- | drivers/clk/hisilicon/clk-hi3519.c | 116 |
1 files changed, 100 insertions, 16 deletions
diff --git a/drivers/clk/hisilicon/clk-hi3519.c b/drivers/clk/hisilicon/clk-hi3519.c index 715c7301a..51b173ef1 100644 --- a/drivers/clk/hisilicon/clk-hi3519.c +++ b/drivers/clk/hisilicon/clk-hi3519.c @@ -38,6 +38,11 @@ #define HI3519_NR_CLKS 128 +struct hi3519_crg_data { + struct hisi_clock_data *clk_data; + struct hisi_reset_controller *rstc; +}; + static const struct hisi_fixed_rate_clock hi3519_fixed_rate_clks[] = { { HI3519_FIXED_24M, "24m", NULL, 0, 24000000, }, { HI3519_FIXED_50M, "50m", NULL, 0, 50000000, }, @@ -80,33 +85,105 @@ static const struct hisi_gate_clock hi3519_gate_clks[] = { CLK_SET_RATE_PARENT, 0xe4, 18, 0, }, }; -static int hi3519_clk_probe(struct platform_device *pdev) +static struct hisi_clock_data *hi3519_clk_register(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node; struct hisi_clock_data *clk_data; - struct hisi_reset_controller *rstc; + int ret; - rstc = hisi_reset_init(np); - if (!rstc) + clk_data = hisi_clk_alloc(pdev, HI3519_NR_CLKS); + if (!clk_data) + return ERR_PTR(-ENOMEM); + + ret = hisi_clk_register_fixed_rate(hi3519_fixed_rate_clks, + ARRAY_SIZE(hi3519_fixed_rate_clks), + clk_data); + if (ret) + return ERR_PTR(ret); + + ret = hisi_clk_register_mux(hi3519_mux_clks, + ARRAY_SIZE(hi3519_mux_clks), + clk_data); + if (ret) + goto unregister_fixed_rate; + + ret = hisi_clk_register_gate(hi3519_gate_clks, + ARRAY_SIZE(hi3519_gate_clks), + clk_data); + if (ret) + goto unregister_mux; + + ret = of_clk_add_provider(pdev->dev.of_node, + of_clk_src_onecell_get, &clk_data->clk_data); + if (ret) + goto unregister_gate; + + return clk_data; + +unregister_fixed_rate: + hisi_clk_unregister_fixed_rate(hi3519_fixed_rate_clks, + ARRAY_SIZE(hi3519_fixed_rate_clks), + clk_data); + +unregister_mux: + hisi_clk_unregister_mux(hi3519_mux_clks, + ARRAY_SIZE(hi3519_mux_clks), + clk_data); +unregister_gate: + hisi_clk_unregister_gate(hi3519_gate_clks, + ARRAY_SIZE(hi3519_gate_clks), + clk_data); + return ERR_PTR(ret); +} + +static void hi3519_clk_unregister(struct platform_device *pdev) +{ + struct hi3519_crg_data *crg = platform_get_drvdata(pdev); + + of_clk_del_provider(pdev->dev.of_node); + + hisi_clk_unregister_gate(hi3519_gate_clks, + ARRAY_SIZE(hi3519_mux_clks), + crg->clk_data); + hisi_clk_unregister_mux(hi3519_mux_clks, + ARRAY_SIZE(hi3519_mux_clks), + crg->clk_data); + hisi_clk_unregister_fixed_rate(hi3519_fixed_rate_clks, + ARRAY_SIZE(hi3519_fixed_rate_clks), + crg->clk_data); +} + +static int hi3519_clk_probe(struct platform_device *pdev) +{ + struct hi3519_crg_data *crg; + + crg = devm_kmalloc(&pdev->dev, sizeof(*crg), GFP_KERNEL); + if (!crg) + return -ENOMEM; + + crg->rstc = hisi_reset_init(pdev); + if (!crg->rstc) return -ENOMEM; - clk_data = hisi_clk_init(np, HI3519_NR_CLKS); - if (!clk_data) { - hisi_reset_exit(rstc); - return -ENODEV; + crg->clk_data = hi3519_clk_register(pdev); + if (IS_ERR(crg->clk_data)) { + hisi_reset_exit(crg->rstc); + return PTR_ERR(crg->clk_data); } - hisi_clk_register_fixed_rate(hi3519_fixed_rate_clks, - ARRAY_SIZE(hi3519_fixed_rate_clks), - clk_data); - hisi_clk_register_mux(hi3519_mux_clks, ARRAY_SIZE(hi3519_mux_clks), - clk_data); - hisi_clk_register_gate(hi3519_gate_clks, - ARRAY_SIZE(hi3519_gate_clks), clk_data); + platform_set_drvdata(pdev, crg); + return 0; +} + +static int hi3519_clk_remove(struct platform_device *pdev) +{ + struct hi3519_crg_data *crg = platform_get_drvdata(pdev); + hisi_reset_exit(crg->rstc); + hi3519_clk_unregister(pdev); return 0; } + static const struct of_device_id hi3519_clk_match_table[] = { { .compatible = "hisilicon,hi3519-crg" }, { } @@ -115,6 +192,7 @@ MODULE_DEVICE_TABLE(of, hi3519_clk_match_table); static struct platform_driver hi3519_clk_driver = { .probe = hi3519_clk_probe, + .remove = hi3519_clk_remove, .driver = { .name = "hi3519-clk", .of_match_table = hi3519_clk_match_table, @@ -127,5 +205,11 @@ static int __init hi3519_clk_init(void) } core_initcall(hi3519_clk_init); +static void __exit hi3519_clk_exit(void) +{ + platform_driver_unregister(&hi3519_clk_driver); +} +module_exit(hi3519_clk_exit); + MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("HiSilicon Hi3519 Clock Driver"); |