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linux/drivers/clk/sunxi-ng/ccu-sun8i-r.c
Samuel Holland e1c51d31be clk: sunxi-ng: Deduplicate ccu_clks arrays 
The ccu_clks arrays are used to link ccu_common objects to a platform
device during probe. There is no requirement that the clk_hw inside the
ccu_common object ever gets registered with the clock framework. So the
drivers do not need a separate ccu_clks array for each CCU variant.
A single array per driver, containing the union of the CCU clocks from
all variants, is sufficient.

Let's save some space by combining the ccu_clks arrays in each driver.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220531043539.41549-1-samuel@sholland.org
2022-06-06 23:13:28 +02:00

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// 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");
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