clk/rockchip/clk-inverter.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
7 #include <linux/clk-provider.h>
11 #include "clk.h"
30 	val = readl(inv_clock->reg) >> inv_clock->shift;  in rockchip_inv_get_phase()
43 		pr_err("%s: unsupported phase %d for %s\n",  in rockchip_inv_set_phase()
45 		return -EINVAL;  in rockchip_inv_set_phase()
48 	if (inv_clock->flags & ROCKCHIP_INVERTER_HIWORD_MASK) {  in rockchip_inv_set_phase()
49 		writel(HIWORD_UPDATE(val, INVERTER_MASK, inv_clock->shift),  in rockchip_inv_set_phase()
50 		       inv_clock->reg);  in rockchip_inv_set_phase()
55 		spin_lock_irqsave(inv_clock->lock, flags);  in rockchip_inv_set_phase()
57 		reg = readl(inv_clock->reg);  in rockchip_inv_set_phase()
58 		reg &= ~BIT(inv_clock->shift);  in rockchip_inv_set_phase()
60 		writel(reg, inv_clock->reg);  in rockchip_inv_set_phase()
62 		spin_unlock_irqrestore(inv_clock->lock, flags);  in rockchip_inv_set_phase()
73 struct clk *rockchip_clk_register_inverter(const char *name,  in rockchip_clk_register_inverter()
80 	struct clk *clk;  in rockchip_clk_register_inverter()  local
84 		return ERR_PTR(-ENOMEM);  in rockchip_clk_register_inverter()
92 	inv_clock->hw.init = &init;  in rockchip_clk_register_inverter()
93 	inv_clock->reg = reg;  in rockchip_clk_register_inverter()
94 	inv_clock->shift = shift;  in rockchip_clk_register_inverter()
95 	inv_clock->flags = flags;  in rockchip_clk_register_inverter()
96 	inv_clock->lock = lock;  in rockchip_clk_register_inverter()
98 	clk = clk_register(NULL, &inv_clock->hw);  in rockchip_clk_register_inverter()
99 	if (IS_ERR(clk))  in rockchip_clk_register_inverter()
102 	return clk;  in rockchip_clk_register_inverter()