// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for Skyworks Si521xx PCIe clock generator driver * * The following series can be supported: * - Si52144 - 4x DIFF * - Si52146 - 6x DIFF * - Si52147 - 9x DIFF * Currently tested: * - Si52144 * * Copyright (C) 2022 Marek Vasut <[email protected]> */ #include <linux/bitfield.h> #include <linux/bitrev.h> #include <linux/clk-provider.h> #include <linux/i2c.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/of.h> #include <linux/regmap.h> /* OE1 and OE2 register */ #define SI521XX_REG_OE(n) … #define SI521XX_REG_ID … #define SI521XX_REG_ID_PROG … #define SI521XX_REG_ID_VENDOR … #define SI521XX_REG_BC … #define SI521XX_REG_DA … #define SI521XX_REG_DA_AMP_SEL … #define SI521XX_REG_DA_AMP_MASK … #define SI521XX_REG_DA_AMP_MIN … #define SI521XX_REG_DA_AMP_DEFAULT … #define SI521XX_REG_DA_AMP_MAX … #define SI521XX_REG_DA_AMP_STEP … #define SI521XX_REG_DA_AMP(UV) … #define SI521XX_REG_DA_UNKNOWN … /* Count of populated OE bits in control register ref, 1 and 2 */ #define SI521XX_OE_MAP(cr1, cr2) … #define SI521XX_OE_MAP_GET_OE(oe, map) … #define SI521XX_DIFF_MULT … #define SI521XX_DIFF_DIV … /* Supported Skyworks Si521xx models. */ enum si521xx_model { … }; struct si521xx; struct si_clk { … }; struct si521xx { … }; /* * Si521xx i2c regmap */ static const struct regmap_range si521xx_readable_ranges[] = …; static const struct regmap_access_table si521xx_readable_table = …; static const struct regmap_range si521xx_writeable_ranges[] = …; static const struct regmap_access_table si521xx_writeable_table = …; static int si521xx_regmap_i2c_write(void *context, unsigned int reg, unsigned int val) { … } static int si521xx_regmap_i2c_read(void *context, unsigned int reg, unsigned int *val) { … } static const struct regmap_config si521xx_regmap_config = …; static unsigned long si521xx_diff_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { … } static long si521xx_diff_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate) { … } static int si521xx_diff_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { … } #define to_si521xx_clk(_hw) … static int si521xx_diff_prepare(struct clk_hw *hw) { … } static void si521xx_diff_unprepare(struct clk_hw *hw) { … } static const struct clk_ops si521xx_diff_clk_ops = …; static int si521xx_get_common_config(struct si521xx *si) { … } static void si521xx_update_config(struct si521xx *si) { … } static void si521xx_diff_idx_to_reg_bit(const u16 chip_info, const int idx, struct si_clk *clk) { … } static struct clk_hw * si521xx_of_clk_get(struct of_phandle_args *clkspec, void *data) { … } static int si521xx_probe(struct i2c_client *client) { … } static int __maybe_unused si521xx_suspend(struct device *dev) { … } static int __maybe_unused si521xx_resume(struct device *dev) { … } static const struct i2c_device_id si521xx_id[] = …; MODULE_DEVICE_TABLE(i2c, si521xx_id); static const struct of_device_id clk_si521xx_of_match[] = …; MODULE_DEVICE_TABLE(of, clk_si521xx_of_match); static SIMPLE_DEV_PM_OPS(si521xx_pm_ops, si521xx_suspend, si521xx_resume); static struct i2c_driver si521xx_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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