diff options
Diffstat (limited to '')
-rw-r--r-- | drivers/clk/sunxi-ng/ccu-sun8i-r.c | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-r.c b/drivers/clk/sunxi-ng/ccu-sun8i-r.c new file mode 100644 index 000000000..4221649b3 --- /dev/null +++ b/drivers/clk/sunxi-ng/ccu-sun8i-r.c @@ -0,0 +1,277 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2016 Icenowy Zheng <icenowy@aosc.xyz> + */ + +#include <linux/clk-provider.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> + +#include "ccu_common.h" +#include "ccu_reset.h" + +#include "ccu_div.h" +#include "ccu_gate.h" +#include "ccu_mp.h" +#include "ccu_nm.h" + +#include "ccu-sun8i-r.h" + +static const struct clk_parent_data ar100_parents[] = { + { .fw_name = "losc" }, + { .fw_name = "hosc" }, + { .fw_name = "pll-periph" }, + { .fw_name = "iosc" }, +}; + +static const struct ccu_mux_var_prediv ar100_predivs[] = { + { .index = 2, .shift = 8, .width = 5 }, +}; + +static struct ccu_div ar100_clk = { + .div = _SUNXI_CCU_DIV_FLAGS(4, 2, CLK_DIVIDER_POWER_OF_TWO), + + .mux = { + .shift = 16, + .width = 2, + + .var_predivs = ar100_predivs, + .n_var_predivs = ARRAY_SIZE(ar100_predivs), + }, + + .common = { + .reg = 0x00, + .features = CCU_FEATURE_VARIABLE_PREDIV, + .hw.init = CLK_HW_INIT_PARENTS_DATA("ar100", + ar100_parents, + &ccu_div_ops, + 0), + }, +}; + +static CLK_FIXED_FACTOR_HW(ahb0_clk, "ahb0", &ar100_clk.common.hw, 1, 1, 0); + +static SUNXI_CCU_M(apb0_clk, "apb0", "ahb0", 0x0c, 0, 2, 0); + +/* + * Define the parent as an array that can be reused to save space + * instead of having compound literals for each gate. Also have it + * non-const so we can change it on the A83T. + */ +static const struct clk_hw *apb0_gate_parent[] = { &apb0_clk.common.hw }; +static SUNXI_CCU_GATE_HWS(apb0_pio_clk, "apb0-pio", + apb0_gate_parent, 0x28, BIT(0), 0); +static SUNXI_CCU_GATE_HWS(apb0_ir_clk, "apb0-ir", + apb0_gate_parent, 0x28, BIT(1), 0); +static SUNXI_CCU_GATE_HWS(apb0_timer_clk, "apb0-timer", + apb0_gate_parent, 0x28, BIT(2), 0); +static SUNXI_CCU_GATE_HWS(apb0_rsb_clk, "apb0-rsb", + apb0_gate_parent, 0x28, BIT(3), 0); +static SUNXI_CCU_GATE_HWS(apb0_uart_clk, "apb0-uart", + apb0_gate_parent, 0x28, BIT(4), 0); +static SUNXI_CCU_GATE_HWS(apb0_i2c_clk, "apb0-i2c", + apb0_gate_parent, 0x28, BIT(6), 0); +static SUNXI_CCU_GATE_HWS(apb0_twd_clk, "apb0-twd", + apb0_gate_parent, 0x28, BIT(7), 0); + +static const char * const r_mod0_default_parents[] = { "osc32k", "osc24M" }; +static SUNXI_CCU_MP_WITH_MUX_GATE(ir_clk, "ir", + r_mod0_default_parents, 0x54, + 0, 4, /* M */ + 16, 2, /* P */ + 24, 2, /* mux */ + BIT(31), /* gate */ + 0); + +static const struct clk_parent_data a83t_r_mod0_parents[] = { + { .fw_name = "iosc" }, + { .fw_name = "hosc" }, +}; +static const struct ccu_mux_fixed_prediv a83t_ir_predivs[] = { + { .index = 0, .div = 16 }, +}; +static struct ccu_mp a83t_ir_clk = { + .enable = BIT(31), + + .m = _SUNXI_CCU_DIV(0, 4), + .p = _SUNXI_CCU_DIV(16, 2), + + .mux = { + .shift = 24, + .width = 2, + .fixed_predivs = a83t_ir_predivs, + .n_predivs = ARRAY_SIZE(a83t_ir_predivs), + }, + + .common = { + .reg = 0x54, + .features = CCU_FEATURE_VARIABLE_PREDIV, + .hw.init = CLK_HW_INIT_PARENTS_DATA("ir", + a83t_r_mod0_parents, + &ccu_mp_ops, + 0), + }, +}; + +static struct ccu_common *sun8i_r_ccu_clks[] = { + &ar100_clk.common, + &apb0_clk.common, + &apb0_pio_clk.common, + &apb0_ir_clk.common, + &apb0_timer_clk.common, + &apb0_rsb_clk.common, + &apb0_uart_clk.common, + &apb0_i2c_clk.common, + &apb0_twd_clk.common, + &ir_clk.common, + &a83t_ir_clk.common, +}; + +static struct clk_hw_onecell_data sun8i_a83t_r_hw_clks = { + .hws = { + [CLK_AR100] = &ar100_clk.common.hw, + [CLK_AHB0] = &ahb0_clk.hw, + [CLK_APB0] = &apb0_clk.common.hw, + [CLK_APB0_PIO] = &apb0_pio_clk.common.hw, + [CLK_APB0_IR] = &apb0_ir_clk.common.hw, + [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw, + [CLK_APB0_RSB] = &apb0_rsb_clk.common.hw, + [CLK_APB0_UART] = &apb0_uart_clk.common.hw, + [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw, + [CLK_APB0_TWD] = &apb0_twd_clk.common.hw, + [CLK_IR] = &a83t_ir_clk.common.hw, + }, + .num = CLK_NUMBER, +}; + +static struct clk_hw_onecell_data sun8i_h3_r_hw_clks = { + .hws = { + [CLK_AR100] = &ar100_clk.common.hw, + [CLK_AHB0] = &ahb0_clk.hw, + [CLK_APB0] = &apb0_clk.common.hw, + [CLK_APB0_PIO] = &apb0_pio_clk.common.hw, + [CLK_APB0_IR] = &apb0_ir_clk.common.hw, + [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw, + [CLK_APB0_UART] = &apb0_uart_clk.common.hw, + [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw, + [CLK_APB0_TWD] = &apb0_twd_clk.common.hw, + [CLK_IR] = &ir_clk.common.hw, + }, + .num = CLK_NUMBER, +}; + +static struct clk_hw_onecell_data sun50i_a64_r_hw_clks = { + .hws = { + [CLK_AR100] = &ar100_clk.common.hw, + [CLK_AHB0] = &ahb0_clk.hw, + [CLK_APB0] = &apb0_clk.common.hw, + [CLK_APB0_PIO] = &apb0_pio_clk.common.hw, + [CLK_APB0_IR] = &apb0_ir_clk.common.hw, + [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw, + [CLK_APB0_RSB] = &apb0_rsb_clk.common.hw, + [CLK_APB0_UART] = &apb0_uart_clk.common.hw, + [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw, + [CLK_APB0_TWD] = &apb0_twd_clk.common.hw, + [CLK_IR] = &ir_clk.common.hw, + }, + .num = CLK_NUMBER, +}; + +static struct ccu_reset_map sun8i_a83t_r_ccu_resets[] = { + [RST_APB0_IR] = { 0xb0, BIT(1) }, + [RST_APB0_TIMER] = { 0xb0, BIT(2) }, + [RST_APB0_RSB] = { 0xb0, BIT(3) }, + [RST_APB0_UART] = { 0xb0, BIT(4) }, + [RST_APB0_I2C] = { 0xb0, BIT(6) }, +}; + +static struct ccu_reset_map sun8i_h3_r_ccu_resets[] = { + [RST_APB0_IR] = { 0xb0, BIT(1) }, + [RST_APB0_TIMER] = { 0xb0, BIT(2) }, + [RST_APB0_UART] = { 0xb0, BIT(4) }, + [RST_APB0_I2C] = { 0xb0, BIT(6) }, +}; + +static struct ccu_reset_map sun50i_a64_r_ccu_resets[] = { + [RST_APB0_IR] = { 0xb0, BIT(1) }, + [RST_APB0_TIMER] = { 0xb0, BIT(2) }, + [RST_APB0_RSB] = { 0xb0, BIT(3) }, + [RST_APB0_UART] = { 0xb0, BIT(4) }, + [RST_APB0_I2C] = { 0xb0, BIT(6) }, +}; + +static const struct sunxi_ccu_desc sun8i_a83t_r_ccu_desc = { + .ccu_clks = sun8i_r_ccu_clks, + .num_ccu_clks = ARRAY_SIZE(sun8i_r_ccu_clks), + + .hw_clks = &sun8i_a83t_r_hw_clks, + + .resets = sun8i_a83t_r_ccu_resets, + .num_resets = ARRAY_SIZE(sun8i_a83t_r_ccu_resets), +}; + +static const struct sunxi_ccu_desc sun8i_h3_r_ccu_desc = { + .ccu_clks = sun8i_r_ccu_clks, + .num_ccu_clks = ARRAY_SIZE(sun8i_r_ccu_clks), + + .hw_clks = &sun8i_h3_r_hw_clks, + + .resets = sun8i_h3_r_ccu_resets, + .num_resets = ARRAY_SIZE(sun8i_h3_r_ccu_resets), +}; + +static const struct sunxi_ccu_desc sun50i_a64_r_ccu_desc = { + .ccu_clks = sun8i_r_ccu_clks, + .num_ccu_clks = ARRAY_SIZE(sun8i_r_ccu_clks), + + .hw_clks = &sun50i_a64_r_hw_clks, + + .resets = sun50i_a64_r_ccu_resets, + .num_resets = ARRAY_SIZE(sun50i_a64_r_ccu_resets), +}; + +static int sun8i_r_ccu_probe(struct platform_device *pdev) +{ + const struct sunxi_ccu_desc *desc; + void __iomem *reg; + + desc = of_device_get_match_data(&pdev->dev); + if (!desc) + return -EINVAL; + + reg = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(reg)) + return PTR_ERR(reg); + + return devm_sunxi_ccu_probe(&pdev->dev, reg, desc); +} + +static const struct of_device_id sun8i_r_ccu_ids[] = { + { + .compatible = "allwinner,sun8i-a83t-r-ccu", + .data = &sun8i_a83t_r_ccu_desc, + }, + { + .compatible = "allwinner,sun8i-h3-r-ccu", + .data = &sun8i_h3_r_ccu_desc, + }, + { + .compatible = "allwinner,sun50i-a64-r-ccu", + .data = &sun50i_a64_r_ccu_desc, + }, + { } +}; + +static struct platform_driver sun8i_r_ccu_driver = { + .probe = sun8i_r_ccu_probe, + .driver = { + .name = "sun8i-r-ccu", + .suppress_bind_attrs = true, + .of_match_table = sun8i_r_ccu_ids, + }, +}; +module_platform_driver(sun8i_r_ccu_driver); + +MODULE_IMPORT_NS(SUNXI_CCU); +MODULE_LICENSE("GPL"); |