clk/bcm/clk-bcm63268-timer.c

1 // SPDX-License-Identifier: GPL-2.0
3  * BCM63268 Timer Clock and Reset Controller Driver
8 #include <linux/clk-provider.h>
14 #include <linux/reset-controller.h>
17 #include <dt-bindings/clock/bcm63268-clock.h>
90 	spin_lock_irqsave(&reset->lock, flags);  in bcm63268_timer_reset_update()
91 	val = __raw_readl(reset->regs);  in bcm63268_timer_reset_update()
96 	__raw_writel(val, reset->regs);  in bcm63268_timer_reset_update()
97 	spin_unlock_irqrestore(&reset->lock, flags);  in bcm63268_timer_reset_update()
138 	return !(__raw_readl(reset->regs) & BIT(id));  in bcm63268_timer_reset_status()
150 	struct device *dev = &pdev->dev;  in bcm63268_tclk_probe()
157 	for (entry = bcm63268_timer_clocks; entry->name; entry++)  in bcm63268_tclk_probe()
158 		maxbit = max(maxbit, entry->bit);  in bcm63268_tclk_probe()
161 	hw = devm_kzalloc(&pdev->dev, struct_size(hw, data.hws, maxbit),  in bcm63268_tclk_probe()
164 		return -ENOMEM;  in bcm63268_tclk_probe()
168 	spin_lock_init(&hw->lock);  in bcm63268_tclk_probe()
170 	hw->data.num = maxbit;  in bcm63268_tclk_probe()
172 		hw->data.hws[i] = ERR_PTR(-ENODEV);  in bcm63268_tclk_probe()
174 	hw->regs = devm_platform_ioremap_resource(pdev, 0);  in bcm63268_tclk_probe()
175 	if (IS_ERR(hw->regs))  in bcm63268_tclk_probe()
176 		return PTR_ERR(hw->regs);  in bcm63268_tclk_probe()
178 	for (entry = bcm63268_timer_clocks; entry->name; entry++) {  in bcm63268_tclk_probe()
179 		clk = devm_clk_hw_register_gate(dev, entry->name, NULL, 0,  in bcm63268_tclk_probe()
180 						hw->regs, entry->bit,  in bcm63268_tclk_probe()
182 						&hw->lock);  in bcm63268_tclk_probe()
186 		hw->data.hws[entry->bit] = clk;  in bcm63268_tclk_probe()
190 					  &hw->data);  in bcm63268_tclk_probe()
194 	hw->rcdev.of_node = dev->of_node;  in bcm63268_tclk_probe()
195 	hw->rcdev.ops = &bcm63268_timer_reset_ops;  in bcm63268_tclk_probe()
197 	ret = devm_reset_controller_register(dev, &hw->rcdev);  in bcm63268_tclk_probe()
205 	{ .compatible = "brcm,bcm63268-timer-clocks" },
212 		.name = "bcm63268-timer-clock",