72 		mutex_lock(&indio_dev->mlock);  in rockchip_saradc_read_raw()
74 		reinit_completion(&info->completion);  in rockchip_saradc_read_raw()
77 		writel_relaxed(8, info->regs + SARADC_DLY_PU_SOC);  in rockchip_saradc_read_raw()
81 				| (chan->channel & SARADC_CTRL_CHN_MASK)  in rockchip_saradc_read_raw()
83 		       info->regs + SARADC_CTRL);  in rockchip_saradc_read_raw()
85 		if (!wait_for_completion_timeout(&info->completion,  in rockchip_saradc_read_raw()
87 			writel_relaxed(0, info->regs + SARADC_CTRL);  in rockchip_saradc_read_raw()
88 			mutex_unlock(&indio_dev->mlock);  in rockchip_saradc_read_raw()
89 			return -ETIMEDOUT;  in rockchip_saradc_read_raw()
92 		*val = info->last_val;  in rockchip_saradc_read_raw()
93 		mutex_unlock(&indio_dev->mlock);  in rockchip_saradc_read_raw()
96 		ret = regulator_get_voltage(info->vref);  in rockchip_saradc_read_raw()
98 			dev_err(&indio_dev->dev, "failed to get voltage\n");  in rockchip_saradc_read_raw()
103 		*val2 = info->data->num_bits;  in rockchip_saradc_read_raw()
106 		return -EINVAL;  in rockchip_saradc_read_raw()
115 	info->last_val = readl_relaxed(info->regs + SARADC_DATA);  in rockchip_saradc_isr()
116 	info->last_val &= GENMASK(info->data->num_bits - 1, 0);  in rockchip_saradc_isr()
119 	writel_relaxed(0, info->regs + SARADC_CTRL);  in rockchip_saradc_isr()
121 	complete(&info->completion);  in rockchip_saradc_isr()
182 		.compatible = "rockchip,saradc",
185 		.compatible = "rockchip,rk3066-tsadc",
188 		.compatible = "rockchip,rk3399-saradc",
196  * Reset SARADC Controller.
208 	struct device_node *np = pdev->dev.of_node;  in rockchip_saradc_probe()
216 		return -ENODEV;  in rockchip_saradc_probe()
218 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*info));  in rockchip_saradc_probe()
220 		dev_err(&pdev->dev, "failed allocating iio device\n");  in rockchip_saradc_probe()
221 		return -ENOMEM;  in rockchip_saradc_probe()
225 	match = of_match_device(rockchip_saradc_match, &pdev->dev);  in rockchip_saradc_probe()
227 		dev_err(&pdev->dev, "failed to match device\n");  in rockchip_saradc_probe()
228 		return -ENODEV;  in rockchip_saradc_probe()
231 	info->data = match->data;  in rockchip_saradc_probe()
234 	info->regs = devm_ioremap_resource(&pdev->dev, mem);  in rockchip_saradc_probe()
235 	if (IS_ERR(info->regs))  in rockchip_saradc_probe()
236 		return PTR_ERR(info->regs);  in rockchip_saradc_probe()
242 	info->reset = devm_reset_control_get_exclusive(&pdev->dev,  in rockchip_saradc_probe()
243 						       "saradc-apb");  in rockchip_saradc_probe()
244 	if (IS_ERR(info->reset)) {  in rockchip_saradc_probe()
245 		ret = PTR_ERR(info->reset);  in rockchip_saradc_probe()
246 		if (ret != -ENOENT)  in rockchip_saradc_probe()
249 		dev_dbg(&pdev->dev, "no reset control found\n");  in rockchip_saradc_probe()
250 		info->reset = NULL;  in rockchip_saradc_probe()
253 	init_completion(&info->completion);  in rockchip_saradc_probe()
257 		dev_err(&pdev->dev, "no irq resource?\n");  in rockchip_saradc_probe()
261 	ret = devm_request_irq(&pdev->dev, irq, rockchip_saradc_isr,  in rockchip_saradc_probe()
262 			       0, dev_name(&pdev->dev), info);  in rockchip_saradc_probe()
264 		dev_err(&pdev->dev, "failed requesting irq %d\n", irq);  in rockchip_saradc_probe()
268 	info->pclk = devm_clk_get(&pdev->dev, "apb_pclk");  in rockchip_saradc_probe()
269 	if (IS_ERR(info->pclk)) {  in rockchip_saradc_probe()
270 		dev_err(&pdev->dev, "failed to get pclk\n");  in rockchip_saradc_probe()
271 		return PTR_ERR(info->pclk);  in rockchip_saradc_probe()
274 	info->clk = devm_clk_get(&pdev->dev, "saradc");  in rockchip_saradc_probe()
275 	if (IS_ERR(info->clk)) {  in rockchip_saradc_probe()
276 		dev_err(&pdev->dev, "failed to get adc clock\n");  in rockchip_saradc_probe()
277 		return PTR_ERR(info->clk);  in rockchip_saradc_probe()
280 	info->vref = devm_regulator_get(&pdev->dev, "vref");  in rockchip_saradc_probe()
281 	if (IS_ERR(info->vref)) {  in rockchip_saradc_probe()
282 		dev_err(&pdev->dev, "failed to get regulator, %ld\n",  in rockchip_saradc_probe()
283 			PTR_ERR(info->vref));  in rockchip_saradc_probe()
284 		return PTR_ERR(info->vref);  in rockchip_saradc_probe()
287 	if (info->reset)  in rockchip_saradc_probe()
288 		rockchip_saradc_reset_controller(info->reset);  in rockchip_saradc_probe()
292 	 * This may become user-configurable in the future.  in rockchip_saradc_probe()
294 	ret = clk_set_rate(info->clk, info->data->clk_rate);  in rockchip_saradc_probe()
296 		dev_err(&pdev->dev, "failed to set adc clk rate, %d\n", ret);  in rockchip_saradc_probe()
300 	ret = regulator_enable(info->vref);  in rockchip_saradc_probe()
302 		dev_err(&pdev->dev, "failed to enable vref regulator\n");  in rockchip_saradc_probe()
306 	ret = clk_prepare_enable(info->pclk);  in rockchip_saradc_probe()
308 		dev_err(&pdev->dev, "failed to enable pclk\n");  in rockchip_saradc_probe()
312 	ret = clk_prepare_enable(info->clk);  in rockchip_saradc_probe()
314 		dev_err(&pdev->dev, "failed to enable converter clock\n");  in rockchip_saradc_probe()
320 	indio_dev->name = dev_name(&pdev->dev);  in rockchip_saradc_probe()
321 	indio_dev->dev.parent = &pdev->dev;  in rockchip_saradc_probe()
322 	indio_dev->dev.of_node = pdev->dev.of_node;  in rockchip_saradc_probe()
323 	indio_dev->info = &rockchip_saradc_iio_info;  in rockchip_saradc_probe()
324 	indio_dev->modes = INDIO_DIRECT_MODE;  in rockchip_saradc_probe()
326 	indio_dev->channels = info->data->channels;  in rockchip_saradc_probe()
327 	indio_dev->num_channels = info->data->num_channels;  in rockchip_saradc_probe()
336 	clk_disable_unprepare(info->clk);  in rockchip_saradc_probe()
338 	clk_disable_unprepare(info->pclk);  in rockchip_saradc_probe()
340 	regulator_disable(info->vref);  in rockchip_saradc_probe()
350 	clk_disable_unprepare(info->clk);  in rockchip_saradc_remove()
351 	clk_disable_unprepare(info->pclk);  in rockchip_saradc_remove()
352 	regulator_disable(info->vref);  in rockchip_saradc_remove()
363 	clk_disable_unprepare(info->clk);  in rockchip_saradc_suspend()
364 	clk_disable_unprepare(info->pclk);  in rockchip_saradc_suspend()
365 	regulator_disable(info->vref);  in rockchip_saradc_suspend()
376 	ret = regulator_enable(info->vref);  in rockchip_saradc_resume()
380 	ret = clk_prepare_enable(info->pclk);  in rockchip_saradc_resume()
384 	ret = clk_prepare_enable(info->clk);  in rockchip_saradc_resume()
399 		.name	= "rockchip-saradc",
408 MODULE_DESCRIPTION("Rockchip SARADC driver");