1 // SPDX-License-Identifier: GPL-2.0-only
75 	if (priv->qdec_mode)  in mchp_tc_count_function_read()
90 	regmap_read(priv->regmap, ATMEL_TC_BMR, &bmr);  in mchp_tc_count_function_write()
91 	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), &cmr);  in mchp_tc_count_function_write()
98 		priv->qdec_mode = 0;  in mchp_tc_count_function_write()
101 		if (priv->tc_cfg->has_gclk)  in mchp_tc_count_function_write()
110 		if (!priv->tc_cfg->has_qdec)  in mchp_tc_count_function_write()
111 			return -EINVAL;  in mchp_tc_count_function_write()
113 		if (priv->num_channels < 2 || priv->channel[0] != 0 ||  in mchp_tc_count_function_write()
114 		    priv->channel[1] != 1) {  in mchp_tc_count_function_write()
116 			return -EINVAL;  in mchp_tc_count_function_write()
118 		priv->qdec_mode = 1;  in mchp_tc_count_function_write()
124 		return -EINVAL;  in mchp_tc_count_function_write()
127 	regmap_write(priv->regmap, ATMEL_TC_BMR, bmr);  in mchp_tc_count_function_write()
128 	regmap_write(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), cmr);  in mchp_tc_count_function_write()
131 	regmap_write(priv->regmap, ATMEL_TC_REG(priv->channel[0], CCR),  in mchp_tc_count_function_write()
134 	if (priv->qdec_mode) {  in mchp_tc_count_function_write()
135 		regmap_write(priv->regmap,  in mchp_tc_count_function_write()
136 			     ATMEL_TC_REG(priv->channel[1], CMR), cmr);  in mchp_tc_count_function_write()
137 		regmap_write(priv->regmap,  in mchp_tc_count_function_write()
138 			     ATMEL_TC_REG(priv->channel[1], CCR),  in mchp_tc_count_function_write()
153 	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], SR), &sr);  in mchp_tc_count_signal_read()
155 	if (signal->id == 1)  in mchp_tc_count_signal_read()
173 	if (priv->qdec_mode) {  in mchp_tc_count_action_read()
178 	/* Only TIOA signal is evaluated in non-QDEC mode */  in mchp_tc_count_action_read()
179 	if (synapse->signal->id != 0) {  in mchp_tc_count_action_read()
184 	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), &cmr);  in mchp_tc_count_action_read()
212 	/* QDEC mode is rising edge only; only TIOA handled in non-QDEC mode */  in mchp_tc_count_action_write()
213 	if (priv->qdec_mode || synapse->signal->id != 0)  in mchp_tc_count_action_write()
214 		return -EINVAL;  in mchp_tc_count_action_write()
231 		return -EINVAL;  in mchp_tc_count_action_write()
234 	return regmap_write_bits(priv->regmap,  in mchp_tc_count_action_write()
235 				ATMEL_TC_REG(priv->channel[0], CMR),  in mchp_tc_count_action_write()
245 	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CV), &cnt);  in mchp_tc_count_read()
291 	{ .compatible = "atmel,at91rm9200-tcb", .data = &tcb_rm9200_config, },
292 	{ .compatible = "atmel,at91sam9x5-tcb", .data = &tcb_sam9x5_config, },
293 	{ .compatible = "atmel,sama5d2-tcb", .data = &tcb_sama5d2_config, },
294 	{ .compatible = "atmel,sama5d3-tcb", .data = &tcb_sama5d3_config, },
305 	struct device_node *np = pdev->dev.of_node;  in mchp_tc_probe()
316 	counter = devm_counter_alloc(&pdev->dev, sizeof(*priv));  in mchp_tc_probe()
318 		return -ENOMEM;  in mchp_tc_probe()
321 	match = of_match_node(atmel_tc_of_match, np->parent);  in mchp_tc_probe()
322 	tcb_config = match->data;  in mchp_tc_probe()
324 		dev_err(&pdev->dev, "No matching parent node found\n");  in mchp_tc_probe()
325 		return -ENODEV;  in mchp_tc_probe()
328 	regmap = syscon_node_to_regmap(np->parent);  in mchp_tc_probe()
333 	priv->num_channels = of_property_count_u32_elems(np, "reg");  in mchp_tc_probe()
334 	if (priv->num_channels < 0) {  in mchp_tc_probe()
335 		dev_err(&pdev->dev, "Invalid or missing channel\n");  in mchp_tc_probe()
336 		return -EINVAL;  in mchp_tc_probe()
340 	for (i = 0; i < priv->num_channels; i++) {  in mchp_tc_probe()
343 			return -ENODEV;  in mchp_tc_probe()
345 		priv->channel[i] = channel;  in mchp_tc_probe()
349 		clk[i] = of_clk_get_by_name(np->parent, clk_name);  in mchp_tc_probe()
352 			clk[i] = of_clk_get_by_name(np->parent, "t0_clk");  in mchp_tc_probe()
361 		ret = devm_add_action_or_reset(&pdev->dev,  in mchp_tc_probe()
367 		dev_dbg(&pdev->dev,  in mchp_tc_probe()
372 	priv->tc_cfg = tcb_config;  in mchp_tc_probe()
373 	priv->regmap = regmap;  in mchp_tc_probe()
374 	counter->name = dev_name(&pdev->dev);  in mchp_tc_probe()
375 	counter->parent = &pdev->dev;  in mchp_tc_probe()
376 	counter->ops = &mchp_tc_ops;  in mchp_tc_probe()
377 	counter->num_counts = ARRAY_SIZE(mchp_tc_counts);  in mchp_tc_probe()
378 	counter->counts = mchp_tc_counts;  in mchp_tc_probe()
379 	counter->num_signals = ARRAY_SIZE(mchp_tc_count_signals);  in mchp_tc_probe()
380 	counter->signals = mchp_tc_count_signals;  in mchp_tc_probe()
382 	ret = devm_counter_add(&pdev->dev, counter);  in mchp_tc_probe()
384 		return dev_err_probe(&pdev->dev, ret, "Failed to add counter\n");  in mchp_tc_probe()
390 	{ .compatible = "microchip,tcb-capture", },
398 		.name = "microchip-tcb-capture",
405 MODULE_DESCRIPTION("Microchip TCB Capture driver");