Lines Matching +full:vref +full:- +full:p
1 // SPDX-License-Identifier: GPL-2.0-or-later
51 struct regulator *vref; member
61 writel_relaxed(0, info->regs + SARADC_CTRL); in rockchip_saradc_power_down()
67 reinit_completion(&info->completion); in rockchip_saradc_conversion()
70 writel_relaxed(8, info->regs + SARADC_DLY_PU_SOC); in rockchip_saradc_conversion()
72 info->last_chan = chan; in rockchip_saradc_conversion()
76 | (chan->channel & SARADC_CTRL_CHN_MASK) in rockchip_saradc_conversion()
78 info->regs + SARADC_CTRL); in rockchip_saradc_conversion()
80 if (!wait_for_completion_timeout(&info->completion, SARADC_TIMEOUT)) in rockchip_saradc_conversion()
81 return -ETIMEDOUT; in rockchip_saradc_conversion()
95 mutex_lock(&indio_dev->mlock); in rockchip_saradc_read_raw()
100 mutex_unlock(&indio_dev->mlock); in rockchip_saradc_read_raw()
104 *val = info->last_val; in rockchip_saradc_read_raw()
105 mutex_unlock(&indio_dev->mlock); in rockchip_saradc_read_raw()
108 ret = regulator_get_voltage(info->vref); in rockchip_saradc_read_raw()
110 dev_err(&indio_dev->dev, "failed to get voltage\n"); in rockchip_saradc_read_raw()
115 *val2 = chan->scan_type.realbits; in rockchip_saradc_read_raw()
118 return -EINVAL; in rockchip_saradc_read_raw()
127 info->last_val = readl_relaxed(info->regs + SARADC_DATA); in rockchip_saradc_isr()
128 info->last_val &= GENMASK(info->last_chan->scan_type.realbits - 1, 0); in rockchip_saradc_isr()
132 complete(&info->completion); in rockchip_saradc_isr()
200 .compatible = "rockchip,rk3066-tsadc",
203 .compatible = "rockchip,rk3399-saradc",
224 clk_disable_unprepare(info->clk); in rockchip_saradc_clk_disable()
231 clk_disable_unprepare(info->pclk); in rockchip_saradc_pclk_disable()
238 regulator_disable(info->vref); in rockchip_saradc_regulator_disable()
241 static irqreturn_t rockchip_saradc_trigger_handler(int irq, void *p) in rockchip_saradc_trigger_handler() argument
243 struct iio_poll_func *pf = p; in rockchip_saradc_trigger_handler()
244 struct iio_dev *i_dev = pf->indio_dev; in rockchip_saradc_trigger_handler()
248 * @timestamp: will be 8-byte aligned automatically in rockchip_saradc_trigger_handler()
259 mutex_lock(&i_dev->mlock); in rockchip_saradc_trigger_handler()
261 for_each_set_bit(i, i_dev->active_scan_mask, i_dev->masklength) { in rockchip_saradc_trigger_handler()
262 const struct iio_chan_spec *chan = &i_dev->channels[i]; in rockchip_saradc_trigger_handler()
270 data.values[j] = info->last_val; in rockchip_saradc_trigger_handler()
276 mutex_unlock(&i_dev->mlock); in rockchip_saradc_trigger_handler()
278 iio_trigger_notify_done(i_dev->trig); in rockchip_saradc_trigger_handler()
286 struct device_node *np = pdev->dev.of_node; in rockchip_saradc_probe()
294 return -ENODEV; in rockchip_saradc_probe()
296 indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*info)); in rockchip_saradc_probe()
298 dev_err(&pdev->dev, "failed allocating iio device\n"); in rockchip_saradc_probe()
299 return -ENOMEM; in rockchip_saradc_probe()
303 match = of_match_device(rockchip_saradc_match, &pdev->dev); in rockchip_saradc_probe()
305 dev_err(&pdev->dev, "failed to match device\n"); in rockchip_saradc_probe()
306 return -ENODEV; in rockchip_saradc_probe()
309 info->data = match->data; in rockchip_saradc_probe()
312 if (info->data->num_channels > SARADC_MAX_CHANNELS) { in rockchip_saradc_probe()
313 dev_err(&pdev->dev, "max channels exceeded"); in rockchip_saradc_probe()
314 return -EINVAL; in rockchip_saradc_probe()
318 info->regs = devm_ioremap_resource(&pdev->dev, mem); in rockchip_saradc_probe()
319 if (IS_ERR(info->regs)) in rockchip_saradc_probe()
320 return PTR_ERR(info->regs); in rockchip_saradc_probe()
326 info->reset = devm_reset_control_get_exclusive(&pdev->dev, in rockchip_saradc_probe()
327 "saradc-apb"); in rockchip_saradc_probe()
328 if (IS_ERR(info->reset)) { in rockchip_saradc_probe()
329 ret = PTR_ERR(info->reset); in rockchip_saradc_probe()
330 if (ret != -ENOENT) in rockchip_saradc_probe()
333 dev_dbg(&pdev->dev, "no reset control found\n"); in rockchip_saradc_probe()
334 info->reset = NULL; in rockchip_saradc_probe()
337 init_completion(&info->completion); in rockchip_saradc_probe()
343 ret = devm_request_irq(&pdev->dev, irq, rockchip_saradc_isr, in rockchip_saradc_probe()
344 0, dev_name(&pdev->dev), info); in rockchip_saradc_probe()
346 dev_err(&pdev->dev, "failed requesting irq %d\n", irq); in rockchip_saradc_probe()
350 info->pclk = devm_clk_get(&pdev->dev, "apb_pclk"); in rockchip_saradc_probe()
351 if (IS_ERR(info->pclk)) { in rockchip_saradc_probe()
352 dev_err(&pdev->dev, "failed to get pclk\n"); in rockchip_saradc_probe()
353 return PTR_ERR(info->pclk); in rockchip_saradc_probe()
356 info->clk = devm_clk_get(&pdev->dev, "saradc"); in rockchip_saradc_probe()
357 if (IS_ERR(info->clk)) { in rockchip_saradc_probe()
358 dev_err(&pdev->dev, "failed to get adc clock\n"); in rockchip_saradc_probe()
359 return PTR_ERR(info->clk); in rockchip_saradc_probe()
362 info->vref = devm_regulator_get(&pdev->dev, "vref"); in rockchip_saradc_probe()
363 if (IS_ERR(info->vref)) { in rockchip_saradc_probe()
364 dev_err(&pdev->dev, "failed to get regulator, %ld\n", in rockchip_saradc_probe()
365 PTR_ERR(info->vref)); in rockchip_saradc_probe()
366 return PTR_ERR(info->vref); in rockchip_saradc_probe()
369 if (info->reset) in rockchip_saradc_probe()
370 rockchip_saradc_reset_controller(info->reset); in rockchip_saradc_probe()
374 * This may become user-configurable in the future. in rockchip_saradc_probe()
376 ret = clk_set_rate(info->clk, info->data->clk_rate); in rockchip_saradc_probe()
378 dev_err(&pdev->dev, "failed to set adc clk rate, %d\n", ret); in rockchip_saradc_probe()
382 ret = regulator_enable(info->vref); in rockchip_saradc_probe()
384 dev_err(&pdev->dev, "failed to enable vref regulator\n"); in rockchip_saradc_probe()
387 ret = devm_add_action_or_reset(&pdev->dev, in rockchip_saradc_probe()
390 dev_err(&pdev->dev, "failed to register devm action, %d\n", in rockchip_saradc_probe()
395 ret = clk_prepare_enable(info->pclk); in rockchip_saradc_probe()
397 dev_err(&pdev->dev, "failed to enable pclk\n"); in rockchip_saradc_probe()
400 ret = devm_add_action_or_reset(&pdev->dev, in rockchip_saradc_probe()
403 dev_err(&pdev->dev, "failed to register devm action, %d\n", in rockchip_saradc_probe()
408 ret = clk_prepare_enable(info->clk); in rockchip_saradc_probe()
410 dev_err(&pdev->dev, "failed to enable converter clock\n"); in rockchip_saradc_probe()
413 ret = devm_add_action_or_reset(&pdev->dev, in rockchip_saradc_probe()
416 dev_err(&pdev->dev, "failed to register devm action, %d\n", in rockchip_saradc_probe()
423 indio_dev->name = dev_name(&pdev->dev); in rockchip_saradc_probe()
424 indio_dev->info = &rockchip_saradc_iio_info; in rockchip_saradc_probe()
425 indio_dev->modes = INDIO_DIRECT_MODE; in rockchip_saradc_probe()
427 indio_dev->channels = info->data->channels; in rockchip_saradc_probe()
428 indio_dev->num_channels = info->data->num_channels; in rockchip_saradc_probe()
429 ret = devm_iio_triggered_buffer_setup(&indio_dev->dev, indio_dev, NULL, in rockchip_saradc_probe()
435 return devm_iio_device_register(&pdev->dev, indio_dev); in rockchip_saradc_probe()
444 clk_disable_unprepare(info->clk); in rockchip_saradc_suspend()
445 clk_disable_unprepare(info->pclk); in rockchip_saradc_suspend()
446 regulator_disable(info->vref); in rockchip_saradc_suspend()
457 ret = regulator_enable(info->vref); in rockchip_saradc_resume()
461 ret = clk_prepare_enable(info->pclk); in rockchip_saradc_resume()
465 ret = clk_prepare_enable(info->clk); in rockchip_saradc_resume()
467 clk_disable_unprepare(info->pclk); in rockchip_saradc_resume()
479 .name = "rockchip-saradc",