diff options
Diffstat (limited to 'drivers/clk/sunxi-ng/ccu-sun4i-a10.c')
| -rw-r--r-- | drivers/clk/sunxi-ng/ccu-sun4i-a10.c | 112 |
1 files changed, 66 insertions, 46 deletions
diff --git a/drivers/clk/sunxi-ng/ccu-sun4i-a10.c b/drivers/clk/sunxi-ng/ccu-sun4i-a10.c index 129ebd2588fd..409feb085021 100644 --- a/drivers/clk/sunxi-ng/ccu-sun4i-a10.c +++ b/drivers/clk/sunxi-ng/ccu-sun4i-a10.c @@ -1,20 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2017 Priit Laes <plaes@plaes.org>. * Copyright (c) 2017 Maxime Ripard. * Copyright (c) 2017 Jonathan Liu. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/clk-provider.h> -#include <linux/of_address.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> #include "ccu_common.h" #include "ccu_reset.h" @@ -167,8 +162,9 @@ static struct ccu_nk pll_periph_base_clk = { }, }; -static CLK_FIXED_FACTOR(pll_periph_clk, "pll-periph", "pll-periph-base", - 2, 1, CLK_SET_RATE_PARENT); +static CLK_FIXED_FACTOR_HW(pll_periph_clk, "pll-periph", + &pll_periph_base_clk.common.hw, + 2, 1, CLK_SET_RATE_PARENT); /* Not documented on A10 */ static struct ccu_div pll_periph_sata_clk = { @@ -1035,19 +1031,29 @@ static struct ccu_common *sun4i_sun7i_ccu_clks[] = { &out_b_clk.common }; +static const struct clk_hw *clk_parent_pll_audio[] = { + &pll_audio_base_clk.common.hw +}; + /* Post-divider for pll-audio is hardcoded to 1 */ -static CLK_FIXED_FACTOR(pll_audio_clk, "pll-audio", - "pll-audio-base", 1, 1, CLK_SET_RATE_PARENT); -static CLK_FIXED_FACTOR(pll_audio_2x_clk, "pll-audio-2x", - "pll-audio-base", 2, 1, CLK_SET_RATE_PARENT); -static CLK_FIXED_FACTOR(pll_audio_4x_clk, "pll-audio-4x", - "pll-audio-base", 1, 1, CLK_SET_RATE_PARENT); -static CLK_FIXED_FACTOR(pll_audio_8x_clk, "pll-audio-8x", - "pll-audio-base", 1, 2, CLK_SET_RATE_PARENT); -static CLK_FIXED_FACTOR(pll_video0_2x_clk, "pll-video0-2x", - "pll-video0", 1, 2, CLK_SET_RATE_PARENT); -static CLK_FIXED_FACTOR(pll_video1_2x_clk, "pll-video1-2x", - "pll-video1", 1, 2, CLK_SET_RATE_PARENT); +static CLK_FIXED_FACTOR_HWS(pll_audio_clk, "pll-audio", + clk_parent_pll_audio, + 1, 1, CLK_SET_RATE_PARENT); +static CLK_FIXED_FACTOR_HWS(pll_audio_2x_clk, "pll-audio-2x", + clk_parent_pll_audio, + 2, 1, CLK_SET_RATE_PARENT); +static CLK_FIXED_FACTOR_HWS(pll_audio_4x_clk, "pll-audio-4x", + clk_parent_pll_audio, + 1, 1, CLK_SET_RATE_PARENT); +static CLK_FIXED_FACTOR_HWS(pll_audio_8x_clk, "pll-audio-8x", + clk_parent_pll_audio, + 1, 2, CLK_SET_RATE_PARENT); +static CLK_FIXED_FACTOR_HW(pll_video0_2x_clk, "pll-video0-2x", + &pll_video0_clk.common.hw, + 1, 2, CLK_SET_RATE_PARENT); +static CLK_FIXED_FACTOR_HW(pll_video1_2x_clk, "pll-video1-2x", + &pll_video1_clk.common.hw, + 1, 2, CLK_SET_RATE_PARENT); static struct clk_hw_onecell_data sun4i_a10_hw_clks = { @@ -1376,7 +1382,7 @@ static struct clk_hw_onecell_data sun7i_a20_hw_clks = { .num = CLK_NUMBER_SUN7I, }; -static struct ccu_reset_map sunxi_a10_a20_ccu_resets[] = { +static const struct ccu_reset_map sunxi_a10_a20_ccu_resets[] = { [RST_USB_PHY0] = { 0x0cc, BIT(0) }, [RST_USB_PHY1] = { 0x0cc, BIT(1) }, [RST_USB_PHY2] = { 0x0cc, BIT(2) }, @@ -1421,18 +1427,19 @@ static const struct sunxi_ccu_desc sun7i_a20_ccu_desc = { .num_resets = ARRAY_SIZE(sunxi_a10_a20_ccu_resets), }; -static void __init sun4i_ccu_init(struct device_node *node, - const struct sunxi_ccu_desc *desc) +static int sun4i_a10_ccu_probe(struct platform_device *pdev) { + const struct sunxi_ccu_desc *desc; void __iomem *reg; u32 val; - reg = of_io_request_and_map(node, 0, of_node_full_name(node)); - if (IS_ERR(reg)) { - pr_err("%s: Could not map the clock registers\n", - of_node_full_name(node)); - return; - } + 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); val = readl(reg + SUN4I_PLL_AUDIO_REG); @@ -1460,19 +1467,32 @@ static void __init sun4i_ccu_init(struct device_node *node, val &= ~GENMASK(7, 6); writel(val | (2 << 6), reg + SUN4I_AHB_REG); - sunxi_ccu_probe(node, reg, desc); + return devm_sunxi_ccu_probe(&pdev->dev, reg, desc); } -static void __init sun4i_a10_ccu_setup(struct device_node *node) -{ - sun4i_ccu_init(node, &sun4i_a10_ccu_desc); -} -CLK_OF_DECLARE(sun4i_a10_ccu, "allwinner,sun4i-a10-ccu", - sun4i_a10_ccu_setup); +static const struct of_device_id sun4i_a10_ccu_ids[] = { + { + .compatible = "allwinner,sun4i-a10-ccu", + .data = &sun4i_a10_ccu_desc, + }, + { + .compatible = "allwinner,sun7i-a20-ccu", + .data = &sun7i_a20_ccu_desc, + }, + { } +}; +MODULE_DEVICE_TABLE(of, sun4i_a10_ccu_ids); + +static struct platform_driver sun4i_a10_ccu_driver = { + .probe = sun4i_a10_ccu_probe, + .driver = { + .name = "sun4i-a10-ccu", + .suppress_bind_attrs = true, + .of_match_table = sun4i_a10_ccu_ids, + }, +}; +module_platform_driver(sun4i_a10_ccu_driver); -static void __init sun7i_a20_ccu_setup(struct device_node *node) -{ - sun4i_ccu_init(node, &sun7i_a20_ccu_desc); -} -CLK_OF_DECLARE(sun7i_a20_ccu, "allwinner,sun7i-a20-ccu", - sun7i_a20_ccu_setup); +MODULE_IMPORT_NS("SUNXI_CCU"); +MODULE_DESCRIPTION("Support for the Allwinner A10/A20 CCU"); +MODULE_LICENSE("GPL"); |