33c70c1399
use PTR_ERR_OR_ZERO inetead of return code Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
789 lines
19 KiB
C
789 lines
19 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Clock driver for DA8xx/AM17xx/AM18xx/OMAP-L13x CFGCHIP
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*
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* Copyright (C) 2018 David Lechner <david@lechnology.com>
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*/
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#include <linux/clk-provider.h>
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#include <linux/clk.h>
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#include <linux/clkdev.h>
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#include <linux/init.h>
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#include <linux/mfd/da8xx-cfgchip.h>
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#include <linux/mfd/syscon.h>
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#include <linux/of_device.h>
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#include <linux/of.h>
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#include <linux/platform_data/clk-da8xx-cfgchip.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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/* --- Gate clocks --- */
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#define DA8XX_GATE_CLOCK_IS_DIV4P5 BIT(1)
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struct da8xx_cfgchip_gate_clk_info {
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const char *name;
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u32 cfgchip;
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u32 bit;
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u32 flags;
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};
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struct da8xx_cfgchip_gate_clk {
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struct clk_hw hw;
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struct regmap *regmap;
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u32 reg;
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u32 mask;
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};
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#define to_da8xx_cfgchip_gate_clk(_hw) \
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container_of((_hw), struct da8xx_cfgchip_gate_clk, hw)
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static int da8xx_cfgchip_gate_clk_enable(struct clk_hw *hw)
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{
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struct da8xx_cfgchip_gate_clk *clk = to_da8xx_cfgchip_gate_clk(hw);
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return regmap_write_bits(clk->regmap, clk->reg, clk->mask, clk->mask);
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}
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static void da8xx_cfgchip_gate_clk_disable(struct clk_hw *hw)
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{
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struct da8xx_cfgchip_gate_clk *clk = to_da8xx_cfgchip_gate_clk(hw);
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regmap_write_bits(clk->regmap, clk->reg, clk->mask, 0);
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}
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static int da8xx_cfgchip_gate_clk_is_enabled(struct clk_hw *hw)
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{
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struct da8xx_cfgchip_gate_clk *clk = to_da8xx_cfgchip_gate_clk(hw);
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unsigned int val;
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regmap_read(clk->regmap, clk->reg, &val);
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return !!(val & clk->mask);
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}
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static unsigned long da8xx_cfgchip_div4p5_recalc_rate(struct clk_hw *hw,
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unsigned long parent_rate)
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{
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/* this clock divides by 4.5 */
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return parent_rate * 2 / 9;
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}
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static const struct clk_ops da8xx_cfgchip_gate_clk_ops = {
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.enable = da8xx_cfgchip_gate_clk_enable,
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.disable = da8xx_cfgchip_gate_clk_disable,
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.is_enabled = da8xx_cfgchip_gate_clk_is_enabled,
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};
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static const struct clk_ops da8xx_cfgchip_div4p5_clk_ops = {
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.enable = da8xx_cfgchip_gate_clk_enable,
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.disable = da8xx_cfgchip_gate_clk_disable,
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.is_enabled = da8xx_cfgchip_gate_clk_is_enabled,
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.recalc_rate = da8xx_cfgchip_div4p5_recalc_rate,
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};
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static struct da8xx_cfgchip_gate_clk * __init
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da8xx_cfgchip_gate_clk_register(struct device *dev,
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const struct da8xx_cfgchip_gate_clk_info *info,
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struct regmap *regmap)
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{
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struct clk *parent;
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const char *parent_name;
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struct da8xx_cfgchip_gate_clk *gate;
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struct clk_init_data init;
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int ret;
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parent = devm_clk_get(dev, NULL);
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if (IS_ERR(parent))
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return ERR_CAST(parent);
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parent_name = __clk_get_name(parent);
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gate = devm_kzalloc(dev, sizeof(*gate), GFP_KERNEL);
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if (!gate)
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return ERR_PTR(-ENOMEM);
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init.name = info->name;
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if (info->flags & DA8XX_GATE_CLOCK_IS_DIV4P5)
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init.ops = &da8xx_cfgchip_div4p5_clk_ops;
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else
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init.ops = &da8xx_cfgchip_gate_clk_ops;
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init.parent_names = &parent_name;
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init.num_parents = 1;
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init.flags = 0;
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gate->hw.init = &init;
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gate->regmap = regmap;
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gate->reg = info->cfgchip;
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gate->mask = info->bit;
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ret = devm_clk_hw_register(dev, &gate->hw);
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if (ret < 0)
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return ERR_PTR(ret);
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return gate;
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}
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static const struct da8xx_cfgchip_gate_clk_info da8xx_tbclksync_info __initconst = {
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.name = "ehrpwm_tbclk",
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.cfgchip = CFGCHIP(1),
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.bit = CFGCHIP1_TBCLKSYNC,
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};
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static int __init da8xx_cfgchip_register_tbclk(struct device *dev,
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struct regmap *regmap)
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{
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struct da8xx_cfgchip_gate_clk *gate;
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gate = da8xx_cfgchip_gate_clk_register(dev, &da8xx_tbclksync_info,
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regmap);
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if (IS_ERR(gate))
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return PTR_ERR(gate);
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clk_hw_register_clkdev(&gate->hw, "tbclk", "ehrpwm.0");
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clk_hw_register_clkdev(&gate->hw, "tbclk", "ehrpwm.1");
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return 0;
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}
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static const struct da8xx_cfgchip_gate_clk_info da8xx_div4p5ena_info __initconst = {
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.name = "div4.5",
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.cfgchip = CFGCHIP(3),
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.bit = CFGCHIP3_DIV45PENA,
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.flags = DA8XX_GATE_CLOCK_IS_DIV4P5,
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};
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static int __init da8xx_cfgchip_register_div4p5(struct device *dev,
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struct regmap *regmap)
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{
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struct da8xx_cfgchip_gate_clk *gate;
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gate = da8xx_cfgchip_gate_clk_register(dev, &da8xx_div4p5ena_info, regmap);
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return PTR_ERR_OR_ZERO(gate);
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}
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static int __init
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of_da8xx_cfgchip_gate_clk_init(struct device *dev,
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const struct da8xx_cfgchip_gate_clk_info *info,
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struct regmap *regmap)
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{
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struct da8xx_cfgchip_gate_clk *gate;
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gate = da8xx_cfgchip_gate_clk_register(dev, info, regmap);
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if (IS_ERR(gate))
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return PTR_ERR(gate);
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return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, gate);
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}
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static int __init of_da8xx_tbclksync_init(struct device *dev,
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struct regmap *regmap)
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{
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return of_da8xx_cfgchip_gate_clk_init(dev, &da8xx_tbclksync_info, regmap);
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}
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static int __init of_da8xx_div4p5ena_init(struct device *dev,
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struct regmap *regmap)
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{
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return of_da8xx_cfgchip_gate_clk_init(dev, &da8xx_div4p5ena_info, regmap);
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}
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/* --- MUX clocks --- */
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struct da8xx_cfgchip_mux_clk_info {
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const char *name;
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const char *parent0;
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const char *parent1;
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u32 cfgchip;
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u32 bit;
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};
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struct da8xx_cfgchip_mux_clk {
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struct clk_hw hw;
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struct regmap *regmap;
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u32 reg;
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u32 mask;
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};
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#define to_da8xx_cfgchip_mux_clk(_hw) \
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container_of((_hw), struct da8xx_cfgchip_mux_clk, hw)
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static int da8xx_cfgchip_mux_clk_set_parent(struct clk_hw *hw, u8 index)
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{
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struct da8xx_cfgchip_mux_clk *clk = to_da8xx_cfgchip_mux_clk(hw);
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unsigned int val = index ? clk->mask : 0;
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return regmap_write_bits(clk->regmap, clk->reg, clk->mask, val);
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}
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static u8 da8xx_cfgchip_mux_clk_get_parent(struct clk_hw *hw)
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{
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struct da8xx_cfgchip_mux_clk *clk = to_da8xx_cfgchip_mux_clk(hw);
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unsigned int val;
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regmap_read(clk->regmap, clk->reg, &val);
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return (val & clk->mask) ? 1 : 0;
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}
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static const struct clk_ops da8xx_cfgchip_mux_clk_ops = {
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.set_parent = da8xx_cfgchip_mux_clk_set_parent,
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.get_parent = da8xx_cfgchip_mux_clk_get_parent,
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};
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static struct da8xx_cfgchip_mux_clk * __init
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da8xx_cfgchip_mux_clk_register(struct device *dev,
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const struct da8xx_cfgchip_mux_clk_info *info,
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struct regmap *regmap)
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{
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const char * const parent_names[] = { info->parent0, info->parent1 };
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struct da8xx_cfgchip_mux_clk *mux;
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struct clk_init_data init;
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int ret;
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mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
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if (!mux)
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return ERR_PTR(-ENOMEM);
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init.name = info->name;
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init.ops = &da8xx_cfgchip_mux_clk_ops;
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init.parent_names = parent_names;
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init.num_parents = 2;
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init.flags = 0;
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mux->hw.init = &init;
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mux->regmap = regmap;
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mux->reg = info->cfgchip;
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mux->mask = info->bit;
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ret = devm_clk_hw_register(dev, &mux->hw);
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if (ret < 0)
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return ERR_PTR(ret);
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return mux;
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}
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static const struct da8xx_cfgchip_mux_clk_info da850_async1_info __initconst = {
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.name = "async1",
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.parent0 = "pll0_sysclk3",
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.parent1 = "div4.5",
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.cfgchip = CFGCHIP(3),
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.bit = CFGCHIP3_EMA_CLKSRC,
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};
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static int __init da8xx_cfgchip_register_async1(struct device *dev,
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struct regmap *regmap)
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{
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struct da8xx_cfgchip_mux_clk *mux;
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mux = da8xx_cfgchip_mux_clk_register(dev, &da850_async1_info, regmap);
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if (IS_ERR(mux))
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return PTR_ERR(mux);
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clk_hw_register_clkdev(&mux->hw, "async1", "da850-psc0");
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return 0;
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}
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static const struct da8xx_cfgchip_mux_clk_info da850_async3_info __initconst = {
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.name = "async3",
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.parent0 = "pll0_sysclk2",
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.parent1 = "pll1_sysclk2",
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.cfgchip = CFGCHIP(3),
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.bit = CFGCHIP3_ASYNC3_CLKSRC,
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};
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static int __init da850_cfgchip_register_async3(struct device *dev,
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struct regmap *regmap)
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{
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struct da8xx_cfgchip_mux_clk *mux;
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struct clk_hw *parent;
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mux = da8xx_cfgchip_mux_clk_register(dev, &da850_async3_info, regmap);
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if (IS_ERR(mux))
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return PTR_ERR(mux);
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clk_hw_register_clkdev(&mux->hw, "async3", "da850-psc1");
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/* pll1_sysclk2 is not affected by CPU scaling, so use it for async3 */
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parent = clk_hw_get_parent_by_index(&mux->hw, 1);
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if (parent)
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clk_set_parent(mux->hw.clk, parent->clk);
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else
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dev_warn(dev, "Failed to find async3 parent clock\n");
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return 0;
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}
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static int __init
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of_da8xx_cfgchip_init_mux_clock(struct device *dev,
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const struct da8xx_cfgchip_mux_clk_info *info,
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struct regmap *regmap)
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{
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struct da8xx_cfgchip_mux_clk *mux;
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mux = da8xx_cfgchip_mux_clk_register(dev, info, regmap);
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if (IS_ERR(mux))
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return PTR_ERR(mux);
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return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, &mux->hw);
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}
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static int __init of_da850_async1_init(struct device *dev, struct regmap *regmap)
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{
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return of_da8xx_cfgchip_init_mux_clock(dev, &da850_async1_info, regmap);
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}
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static int __init of_da850_async3_init(struct device *dev, struct regmap *regmap)
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{
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return of_da8xx_cfgchip_init_mux_clock(dev, &da850_async3_info, regmap);
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}
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/* --- USB 2.0 PHY clock --- */
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struct da8xx_usb0_clk48 {
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struct clk_hw hw;
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struct clk *fck;
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struct regmap *regmap;
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};
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#define to_da8xx_usb0_clk48(_hw) \
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container_of((_hw), struct da8xx_usb0_clk48, hw)
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static int da8xx_usb0_clk48_prepare(struct clk_hw *hw)
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{
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struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
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/* The USB 2.0 PSC clock is only needed temporarily during the USB 2.0
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* PHY clock enable, but since clk_prepare() can't be called in an
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* atomic context (i.e. in clk_enable()), we have to prepare it here.
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*/
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return clk_prepare(usb0->fck);
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}
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static void da8xx_usb0_clk48_unprepare(struct clk_hw *hw)
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{
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struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
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clk_unprepare(usb0->fck);
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}
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static int da8xx_usb0_clk48_enable(struct clk_hw *hw)
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{
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struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
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unsigned int mask, val;
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int ret;
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/* Locking the USB 2.O PLL requires that the USB 2.O PSC is enabled
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* temporaily. It can be turned back off once the PLL is locked.
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*/
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clk_enable(usb0->fck);
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/* Turn on the USB 2.0 PHY, but just the PLL, and not OTG. The USB 1.1
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* PHY may use the USB 2.0 PLL clock without USB 2.0 OTG being used.
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*/
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mask = CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_PHY_PLLON;
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val = CFGCHIP2_PHY_PLLON;
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regmap_write_bits(usb0->regmap, CFGCHIP(2), mask, val);
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ret = regmap_read_poll_timeout(usb0->regmap, CFGCHIP(2), val,
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val & CFGCHIP2_PHYCLKGD, 0, 500000);
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clk_disable(usb0->fck);
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return ret;
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}
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static void da8xx_usb0_clk48_disable(struct clk_hw *hw)
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{
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struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
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unsigned int val;
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val = CFGCHIP2_PHYPWRDN;
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regmap_write_bits(usb0->regmap, CFGCHIP(2), val, val);
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}
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static int da8xx_usb0_clk48_is_enabled(struct clk_hw *hw)
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{
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struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
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unsigned int val;
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regmap_read(usb0->regmap, CFGCHIP(2), &val);
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return !!(val & CFGCHIP2_PHYCLKGD);
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}
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static unsigned long da8xx_usb0_clk48_recalc_rate(struct clk_hw *hw,
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unsigned long parent_rate)
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{
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struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
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unsigned int mask, val;
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/* The parent clock rate must be one of the following */
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mask = CFGCHIP2_REFFREQ_MASK;
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switch (parent_rate) {
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case 12000000:
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val = CFGCHIP2_REFFREQ_12MHZ;
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break;
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case 13000000:
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val = CFGCHIP2_REFFREQ_13MHZ;
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break;
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case 19200000:
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val = CFGCHIP2_REFFREQ_19_2MHZ;
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break;
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case 20000000:
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val = CFGCHIP2_REFFREQ_20MHZ;
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break;
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case 24000000:
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val = CFGCHIP2_REFFREQ_24MHZ;
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break;
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case 26000000:
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val = CFGCHIP2_REFFREQ_26MHZ;
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break;
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case 38400000:
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val = CFGCHIP2_REFFREQ_38_4MHZ;
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break;
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case 40000000:
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val = CFGCHIP2_REFFREQ_40MHZ;
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break;
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case 48000000:
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val = CFGCHIP2_REFFREQ_48MHZ;
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break;
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default:
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return 0;
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}
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regmap_write_bits(usb0->regmap, CFGCHIP(2), mask, val);
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/* USB 2.0 PLL always supplies 48MHz */
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return 48000000;
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}
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static long da8xx_usb0_clk48_round_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long *parent_rate)
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{
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return 48000000;
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}
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static int da8xx_usb0_clk48_set_parent(struct clk_hw *hw, u8 index)
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{
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struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
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return regmap_write_bits(usb0->regmap, CFGCHIP(2),
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CFGCHIP2_USB2PHYCLKMUX,
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index ? CFGCHIP2_USB2PHYCLKMUX : 0);
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}
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static u8 da8xx_usb0_clk48_get_parent(struct clk_hw *hw)
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{
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struct da8xx_usb0_clk48 *usb0 = to_da8xx_usb0_clk48(hw);
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unsigned int val;
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|
|
regmap_read(usb0->regmap, CFGCHIP(2), &val);
|
|
|
|
return (val & CFGCHIP2_USB2PHYCLKMUX) ? 1 : 0;
|
|
}
|
|
|
|
static const struct clk_ops da8xx_usb0_clk48_ops = {
|
|
.prepare = da8xx_usb0_clk48_prepare,
|
|
.unprepare = da8xx_usb0_clk48_unprepare,
|
|
.enable = da8xx_usb0_clk48_enable,
|
|
.disable = da8xx_usb0_clk48_disable,
|
|
.is_enabled = da8xx_usb0_clk48_is_enabled,
|
|
.recalc_rate = da8xx_usb0_clk48_recalc_rate,
|
|
.round_rate = da8xx_usb0_clk48_round_rate,
|
|
.set_parent = da8xx_usb0_clk48_set_parent,
|
|
.get_parent = da8xx_usb0_clk48_get_parent,
|
|
};
|
|
|
|
static struct da8xx_usb0_clk48 *
|
|
da8xx_cfgchip_register_usb0_clk48(struct device *dev,
|
|
struct regmap *regmap)
|
|
{
|
|
const char * const parent_names[] = { "usb_refclkin", "pll0_auxclk" };
|
|
struct clk *fck_clk;
|
|
struct da8xx_usb0_clk48 *usb0;
|
|
struct clk_init_data init;
|
|
int ret;
|
|
|
|
fck_clk = devm_clk_get(dev, "fck");
|
|
if (IS_ERR(fck_clk)) {
|
|
if (PTR_ERR(fck_clk) != -EPROBE_DEFER)
|
|
dev_err(dev, "Missing fck clock\n");
|
|
return ERR_CAST(fck_clk);
|
|
}
|
|
|
|
usb0 = devm_kzalloc(dev, sizeof(*usb0), GFP_KERNEL);
|
|
if (!usb0)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
init.name = "usb0_clk48";
|
|
init.ops = &da8xx_usb0_clk48_ops;
|
|
init.parent_names = parent_names;
|
|
init.num_parents = 2;
|
|
|
|
usb0->hw.init = &init;
|
|
usb0->fck = fck_clk;
|
|
usb0->regmap = regmap;
|
|
|
|
ret = devm_clk_hw_register(dev, &usb0->hw);
|
|
if (ret < 0)
|
|
return ERR_PTR(ret);
|
|
|
|
return usb0;
|
|
}
|
|
|
|
/* --- USB 1.1 PHY clock --- */
|
|
|
|
struct da8xx_usb1_clk48 {
|
|
struct clk_hw hw;
|
|
struct regmap *regmap;
|
|
};
|
|
|
|
#define to_da8xx_usb1_clk48(_hw) \
|
|
container_of((_hw), struct da8xx_usb1_clk48, hw)
|
|
|
|
static int da8xx_usb1_clk48_set_parent(struct clk_hw *hw, u8 index)
|
|
{
|
|
struct da8xx_usb1_clk48 *usb1 = to_da8xx_usb1_clk48(hw);
|
|
|
|
return regmap_write_bits(usb1->regmap, CFGCHIP(2),
|
|
CFGCHIP2_USB1PHYCLKMUX,
|
|
index ? CFGCHIP2_USB1PHYCLKMUX : 0);
|
|
}
|
|
|
|
static u8 da8xx_usb1_clk48_get_parent(struct clk_hw *hw)
|
|
{
|
|
struct da8xx_usb1_clk48 *usb1 = to_da8xx_usb1_clk48(hw);
|
|
unsigned int val;
|
|
|
|
regmap_read(usb1->regmap, CFGCHIP(2), &val);
|
|
|
|
return (val & CFGCHIP2_USB1PHYCLKMUX) ? 1 : 0;
|
|
}
|
|
|
|
static const struct clk_ops da8xx_usb1_clk48_ops = {
|
|
.set_parent = da8xx_usb1_clk48_set_parent,
|
|
.get_parent = da8xx_usb1_clk48_get_parent,
|
|
};
|
|
|
|
/**
|
|
* da8xx_cfgchip_register_usb1_clk48 - Register a new USB 1.1 PHY clock
|
|
* @regmap: The CFGCHIP regmap
|
|
*/
|
|
static struct da8xx_usb1_clk48 *
|
|
da8xx_cfgchip_register_usb1_clk48(struct device *dev,
|
|
struct regmap *regmap)
|
|
{
|
|
const char * const parent_names[] = { "usb0_clk48", "usb_refclkin" };
|
|
struct da8xx_usb1_clk48 *usb1;
|
|
struct clk_init_data init;
|
|
int ret;
|
|
|
|
usb1 = devm_kzalloc(dev, sizeof(*usb1), GFP_KERNEL);
|
|
if (!usb1)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
init.name = "usb1_clk48";
|
|
init.ops = &da8xx_usb1_clk48_ops;
|
|
init.parent_names = parent_names;
|
|
init.num_parents = 2;
|
|
|
|
usb1->hw.init = &init;
|
|
usb1->regmap = regmap;
|
|
|
|
ret = devm_clk_hw_register(dev, &usb1->hw);
|
|
if (ret < 0)
|
|
return ERR_PTR(ret);
|
|
|
|
return usb1;
|
|
}
|
|
|
|
static int da8xx_cfgchip_register_usb_phy_clk(struct device *dev,
|
|
struct regmap *regmap)
|
|
{
|
|
struct da8xx_usb0_clk48 *usb0;
|
|
struct da8xx_usb1_clk48 *usb1;
|
|
struct clk_hw *parent;
|
|
|
|
usb0 = da8xx_cfgchip_register_usb0_clk48(dev, regmap);
|
|
if (IS_ERR(usb0))
|
|
return PTR_ERR(usb0);
|
|
|
|
/*
|
|
* All existing boards use pll0_auxclk as the parent and new boards
|
|
* should use device tree, so hard-coding the value (1) here.
|
|
*/
|
|
parent = clk_hw_get_parent_by_index(&usb0->hw, 1);
|
|
if (parent)
|
|
clk_set_parent(usb0->hw.clk, parent->clk);
|
|
else
|
|
dev_warn(dev, "Failed to find usb0 parent clock\n");
|
|
|
|
usb1 = da8xx_cfgchip_register_usb1_clk48(dev, regmap);
|
|
if (IS_ERR(usb1))
|
|
return PTR_ERR(usb1);
|
|
|
|
/*
|
|
* All existing boards use usb0_clk48 as the parent and new boards
|
|
* should use device tree, so hard-coding the value (0) here.
|
|
*/
|
|
parent = clk_hw_get_parent_by_index(&usb1->hw, 0);
|
|
if (parent)
|
|
clk_set_parent(usb1->hw.clk, parent->clk);
|
|
else
|
|
dev_warn(dev, "Failed to find usb1 parent clock\n");
|
|
|
|
clk_hw_register_clkdev(&usb0->hw, "usb0_clk48", "da8xx-usb-phy");
|
|
clk_hw_register_clkdev(&usb1->hw, "usb1_clk48", "da8xx-usb-phy");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int of_da8xx_usb_phy_clk_init(struct device *dev, struct regmap *regmap)
|
|
{
|
|
struct clk_hw_onecell_data *clk_data;
|
|
struct da8xx_usb0_clk48 *usb0;
|
|
struct da8xx_usb1_clk48 *usb1;
|
|
|
|
clk_data = devm_kzalloc(dev, struct_size(clk_data, hws, 2),
|
|
GFP_KERNEL);
|
|
if (!clk_data)
|
|
return -ENOMEM;
|
|
|
|
clk_data->num = 2;
|
|
|
|
usb0 = da8xx_cfgchip_register_usb0_clk48(dev, regmap);
|
|
if (IS_ERR(usb0)) {
|
|
if (PTR_ERR(usb0) == -EPROBE_DEFER)
|
|
return -EPROBE_DEFER;
|
|
|
|
dev_warn(dev, "Failed to register usb0_clk48 (%ld)\n",
|
|
PTR_ERR(usb0));
|
|
|
|
clk_data->hws[0] = ERR_PTR(-ENOENT);
|
|
} else {
|
|
clk_data->hws[0] = &usb0->hw;
|
|
}
|
|
|
|
usb1 = da8xx_cfgchip_register_usb1_clk48(dev, regmap);
|
|
if (IS_ERR(usb1)) {
|
|
if (PTR_ERR(usb1) == -EPROBE_DEFER)
|
|
return -EPROBE_DEFER;
|
|
|
|
dev_warn(dev, "Failed to register usb1_clk48 (%ld)\n",
|
|
PTR_ERR(usb1));
|
|
|
|
clk_data->hws[1] = ERR_PTR(-ENOENT);
|
|
} else {
|
|
clk_data->hws[1] = &usb1->hw;
|
|
}
|
|
|
|
return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, clk_data);
|
|
}
|
|
|
|
/* --- platform device --- */
|
|
|
|
static const struct of_device_id da8xx_cfgchip_of_match[] = {
|
|
{
|
|
.compatible = "ti,da830-tbclksync",
|
|
.data = of_da8xx_tbclksync_init,
|
|
},
|
|
{
|
|
.compatible = "ti,da830-div4p5ena",
|
|
.data = of_da8xx_div4p5ena_init,
|
|
},
|
|
{
|
|
.compatible = "ti,da850-async1-clksrc",
|
|
.data = of_da850_async1_init,
|
|
},
|
|
{
|
|
.compatible = "ti,da850-async3-clksrc",
|
|
.data = of_da850_async3_init,
|
|
},
|
|
{
|
|
.compatible = "ti,da830-usb-phy-clocks",
|
|
.data = of_da8xx_usb_phy_clk_init,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
static const struct platform_device_id da8xx_cfgchip_id_table[] = {
|
|
{
|
|
.name = "da830-tbclksync",
|
|
.driver_data = (kernel_ulong_t)da8xx_cfgchip_register_tbclk,
|
|
},
|
|
{
|
|
.name = "da830-div4p5ena",
|
|
.driver_data = (kernel_ulong_t)da8xx_cfgchip_register_div4p5,
|
|
},
|
|
{
|
|
.name = "da850-async1-clksrc",
|
|
.driver_data = (kernel_ulong_t)da8xx_cfgchip_register_async1,
|
|
},
|
|
{
|
|
.name = "da850-async3-clksrc",
|
|
.driver_data = (kernel_ulong_t)da850_cfgchip_register_async3,
|
|
},
|
|
{
|
|
.name = "da830-usb-phy-clks",
|
|
.driver_data = (kernel_ulong_t)da8xx_cfgchip_register_usb_phy_clk,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
typedef int (*da8xx_cfgchip_init)(struct device *dev, struct regmap *regmap);
|
|
|
|
static int da8xx_cfgchip_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct da8xx_cfgchip_clk_platform_data *pdata = dev->platform_data;
|
|
const struct of_device_id *of_id;
|
|
da8xx_cfgchip_init clk_init = NULL;
|
|
struct regmap *regmap = NULL;
|
|
|
|
of_id = of_match_device(da8xx_cfgchip_of_match, dev);
|
|
if (of_id) {
|
|
struct device_node *parent;
|
|
|
|
clk_init = of_id->data;
|
|
parent = of_get_parent(dev->of_node);
|
|
regmap = syscon_node_to_regmap(parent);
|
|
of_node_put(parent);
|
|
} else if (pdev->id_entry && pdata) {
|
|
clk_init = (void *)pdev->id_entry->driver_data;
|
|
regmap = pdata->cfgchip;
|
|
}
|
|
|
|
if (!clk_init) {
|
|
dev_err(dev, "unable to find driver data\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (IS_ERR_OR_NULL(regmap)) {
|
|
dev_err(dev, "no regmap for CFGCHIP syscon\n");
|
|
return regmap ? PTR_ERR(regmap) : -ENOENT;
|
|
}
|
|
|
|
return clk_init(dev, regmap);
|
|
}
|
|
|
|
static struct platform_driver da8xx_cfgchip_driver = {
|
|
.probe = da8xx_cfgchip_probe,
|
|
.driver = {
|
|
.name = "da8xx-cfgchip-clk",
|
|
.of_match_table = da8xx_cfgchip_of_match,
|
|
},
|
|
.id_table = da8xx_cfgchip_id_table,
|
|
};
|
|
|
|
static int __init da8xx_cfgchip_driver_init(void)
|
|
{
|
|
return platform_driver_register(&da8xx_cfgchip_driver);
|
|
}
|
|
|
|
/* has to be postcore_initcall because PSC devices depend on the async3 clock */
|
|
postcore_initcall(da8xx_cfgchip_driver_init);
|