1 // SPDX-License-Identifier: GPL-2.0-only
37  * atmel_tc_alloc - allocate a specified TC block
41  * pre-initialized struct atmel_tc is returned. The caller can access
51 		if (tc->allocated)  in atmel_tc_alloc()
54 		if ((tc->pdev->dev.of_node && tc->id == block) ||  in atmel_tc_alloc()
55 		    (tc->pdev->id == block)) {  in atmel_tc_alloc()
56 			pdev = tc->pdev;  in atmel_tc_alloc()
57 			tc->allocated = true;  in atmel_tc_alloc()
68  * atmel_tc_free - release a specified TC block
77 	if (tc->allocated)  in atmel_tc_free()
78 		tc->allocated = false;  in atmel_tc_free()
94 		.compatible = "atmel,at91rm9200-tcb",
97 		.compatible = "atmel,at91sam9x5-tcb",
114 	if (of_get_child_count(pdev->dev.of_node))  in tc_probe()
115 		return -EBUSY;  in tc_probe()
119 		return -EINVAL;  in tc_probe()
121 	tc = devm_kzalloc(&pdev->dev, sizeof(struct atmel_tc), GFP_KERNEL);  in tc_probe()
123 		return -ENOMEM;  in tc_probe()
125 	tc->pdev = pdev;  in tc_probe()
127 	clk = devm_clk_get(&pdev->dev, "t0_clk");  in tc_probe()
131 	tc->slow_clk = devm_clk_get(&pdev->dev, "slow_clk");  in tc_probe()
132 	if (IS_ERR(tc->slow_clk))  in tc_probe()
133 		return PTR_ERR(tc->slow_clk);  in tc_probe()
135 	tc->regs = devm_platform_ioremap_resource(pdev, 0);  in tc_probe()
136 	if (IS_ERR(tc->regs))  in tc_probe()
137 		return PTR_ERR(tc->regs);  in tc_probe()
140 	if (pdev->dev.of_node) {  in tc_probe()
142 		match = of_match_node(atmel_tcb_dt_ids, pdev->dev.of_node);  in tc_probe()
144 			tc->tcb_config = match->data;  in tc_probe()
146 		tc->id = of_alias_get_id(tc->pdev->dev.of_node, "tcb");  in tc_probe()
148 		tc->id = pdev->id;  in tc_probe()
151 	tc->clk[0] = clk;  in tc_probe()
152 	tc->clk[1] = devm_clk_get(&pdev->dev, "t1_clk");  in tc_probe()
153 	if (IS_ERR(tc->clk[1]))  in tc_probe()
154 		tc->clk[1] = clk;  in tc_probe()
155 	tc->clk[2] = devm_clk_get(&pdev->dev, "t2_clk");  in tc_probe()
156 	if (IS_ERR(tc->clk[2]))  in tc_probe()
157 		tc->clk[2] = clk;  in tc_probe()
159 	tc->irq[0] = irq;  in tc_probe()
160 	tc->irq[1] = platform_get_irq(pdev, 1);  in tc_probe()
161 	if (tc->irq[1] < 0)  in tc_probe()
162 		tc->irq[1] = irq;  in tc_probe()
163 	tc->irq[2] = platform_get_irq(pdev, 2);  in tc_probe()
164 	if (tc->irq[2] < 0)  in tc_probe()
165 		tc->irq[2] = irq;  in tc_probe()
168 		writel(ATMEL_TC_ALL_IRQ, tc->regs + ATMEL_TC_REG(i, IDR));  in tc_probe()
171 	list_add_tail(&tc->node, &tc_list);  in tc_probe()
185 		writel(ATMEL_TC_ALL_IRQ, tc->regs + ATMEL_TC_REG(i, IDR));  in tc_shutdown()