1 // SPDX-License-Identifier: GPL-2.0-only
86 	struct mchp_tc_data *const priv = counter->priv;  in mchp_tc_count_function_get()
88 	if (priv->qdec_mode)  in mchp_tc_count_function_get()
100 	struct mchp_tc_data *const priv = counter->priv;  in mchp_tc_count_function_set()
103 	regmap_read(priv->regmap, ATMEL_TC_BMR, &bmr);  in mchp_tc_count_function_set()
104 	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), &cmr);  in mchp_tc_count_function_set()
106 	/* Set capture mode */  in mchp_tc_count_function_set()
111 		priv->qdec_mode = 0;  in mchp_tc_count_function_set()
114 		if (!priv->tc_cfg->has_gclk)  in mchp_tc_count_function_set()
118 		/* Setup the period capture mode */  in mchp_tc_count_function_set()
123 		if (!priv->tc_cfg->has_qdec)  in mchp_tc_count_function_set()
124 			return -EINVAL;  in mchp_tc_count_function_set()
126 		if (priv->num_channels < 2 || priv->channel[0] != 0 ||  in mchp_tc_count_function_set()
127 		    priv->channel[1] != 1) {  in mchp_tc_count_function_set()
129 			return -EINVAL;  in mchp_tc_count_function_set()
131 		priv->qdec_mode = 1;  in mchp_tc_count_function_set()
137 	regmap_write(priv->regmap, ATMEL_TC_BMR, bmr);  in mchp_tc_count_function_set()
138 	regmap_write(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), cmr);  in mchp_tc_count_function_set()
141 	regmap_write(priv->regmap, ATMEL_TC_REG(priv->channel[0], CCR),  in mchp_tc_count_function_set()
144 	if (priv->qdec_mode) {  in mchp_tc_count_function_set()
145 		regmap_write(priv->regmap,  in mchp_tc_count_function_set()
146 			     ATMEL_TC_REG(priv->channel[1], CMR), cmr);  in mchp_tc_count_function_set()
147 		regmap_write(priv->regmap,  in mchp_tc_count_function_set()
148 			     ATMEL_TC_REG(priv->channel[1], CCR),  in mchp_tc_count_function_set()
159 	struct mchp_tc_data *const priv = counter->priv;  in mchp_tc_count_signal_read()
163 	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], SR), &sr);  in mchp_tc_count_signal_read()
165 	if (signal->id == 1)  in mchp_tc_count_signal_read()
180 	struct mchp_tc_data *const priv = counter->priv;  in mchp_tc_count_action_get()
183 	if (priv->qdec_mode) {  in mchp_tc_count_action_get()
188 	/* Only TIOA signal is evaluated in non-QDEC mode */  in mchp_tc_count_action_get()
189 	if (synapse->signal->id != 0) {  in mchp_tc_count_action_get()
194 	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), &cmr);  in mchp_tc_count_action_get()
219 	struct mchp_tc_data *const priv = counter->priv;  in mchp_tc_count_action_set()
222 	/* QDEC mode is rising edge only; only TIOA handled in non-QDEC mode */  in mchp_tc_count_action_set()
223 	if (priv->qdec_mode || synapse->signal->id != 0)  in mchp_tc_count_action_set()
224 		return -EINVAL;  in mchp_tc_count_action_set()
241 	return regmap_write_bits(priv->regmap,  in mchp_tc_count_action_set()
242 				ATMEL_TC_REG(priv->channel[0], CMR),  in mchp_tc_count_action_set()
250 	struct mchp_tc_data *const priv = counter->priv;  in mchp_tc_count_read()
253 	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CV), &cnt);  in mchp_tc_count_read()
299 	{ .compatible = "atmel,at91rm9200-tcb", .data = &tcb_rm9200_config, },
300 	{ .compatible = "atmel,at91sam9x5-tcb", .data = &tcb_sam9x5_config, },
301 	{ .compatible = "atmel,sama5d2-tcb", .data = &tcb_sama5d2_config, },
302 	{ .compatible = "atmel,sama5d3-tcb", .data = &tcb_sama5d3_config, },
313 	struct device_node *np = pdev->dev.of_node;  in mchp_tc_probe()
323 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in mchp_tc_probe()
325 		return -ENOMEM;  in mchp_tc_probe()
329 	match = of_match_node(atmel_tc_of_match, np->parent);  in mchp_tc_probe()
330 	tcb_config = match->data;  in mchp_tc_probe()
332 		dev_err(&pdev->dev, "No matching parent node found\n");  in mchp_tc_probe()
333 		return -ENODEV;  in mchp_tc_probe()
336 	regmap = syscon_node_to_regmap(np->parent);  in mchp_tc_probe()
341 	priv->num_channels = of_property_count_u32_elems(np, "reg");  in mchp_tc_probe()
342 	if (priv->num_channels < 0) {  in mchp_tc_probe()
343 		dev_err(&pdev->dev, "Invalid or missing channel\n");  in mchp_tc_probe()
344 		return -EINVAL;  in mchp_tc_probe()
348 	for (i = 0; i < priv->num_channels; i++) {  in mchp_tc_probe()
351 			return -ENODEV;  in mchp_tc_probe()
353 		priv->channel[i] = channel;  in mchp_tc_probe()
357 		clk[i] = of_clk_get_by_name(np->parent, clk_name);  in mchp_tc_probe()
360 			clk[i] = of_clk_get_by_name(np->parent, "t0_clk");  in mchp_tc_probe()
369 		ret = devm_add_action_or_reset(&pdev->dev,  in mchp_tc_probe()
375 		dev_dbg(&pdev->dev,  in mchp_tc_probe()
376 			"Initialized capture mode on channel %d\n",  in mchp_tc_probe()
380 	priv->tc_cfg = tcb_config;  in mchp_tc_probe()
381 	priv->regmap = regmap;  in mchp_tc_probe()
382 	priv->counter.name = dev_name(&pdev->dev);  in mchp_tc_probe()
383 	priv->counter.parent = &pdev->dev;  in mchp_tc_probe()
384 	priv->counter.ops = &mchp_tc_ops;  in mchp_tc_probe()
385 	priv->counter.num_counts = ARRAY_SIZE(mchp_tc_counts);  in mchp_tc_probe()
386 	priv->counter.counts = mchp_tc_counts;  in mchp_tc_probe()
387 	priv->counter.num_signals = ARRAY_SIZE(mchp_tc_count_signals);  in mchp_tc_probe()
388 	priv->counter.signals = mchp_tc_count_signals;  in mchp_tc_probe()
389 	priv->counter.priv = priv;  in mchp_tc_probe()
391 	return devm_counter_register(&pdev->dev, &priv->counter);  in mchp_tc_probe()
395 	{ .compatible = "microchip,tcb-capture", },
403 		.name = "microchip-tcb-capture",
410 MODULE_DESCRIPTION("Microchip TCB Capture driver");