Lines Matching +full:vdd +full:- +full:cpu
1 // SPDX-License-Identifier: GPL-1.0+
5 // Ben Dooks <ben@simtec.co.uk>, <ben-linux@fluff.org>
22 #include "regs-adc.h"
23 #include <linux/soc/samsung/s3c-adc.h>
74 struct regulator *vdd; member
81 #define adc_dbg(_adc, msg...) dev_dbg(&(_adc)->pdev->dev, msg)
85 unsigned con = readl(adc->regs + S3C2410_ADCCON); in s3c_adc_convert()
88 writel(con, adc->regs + S3C2410_ADCCON); in s3c_adc_convert()
94 unsigned con = readl(adc->regs + S3C2410_ADCCON); in s3c_adc_select()
95 enum s3c_cpu_type cpu = platform_get_device_id(adc->pdev)->driver_data; in s3c_adc_select() local
97 client->select_cb(client, 1); in s3c_adc_select()
99 if (cpu == TYPE_ADCV1 || cpu == TYPE_ADCV2) in s3c_adc_select()
104 if (!client->is_ts) { in s3c_adc_select()
105 if (cpu == TYPE_ADCV3) in s3c_adc_select()
106 writel(client->channel & 0xf, adc->regs + S5P_ADCMUX); in s3c_adc_select()
107 else if (cpu == TYPE_ADCV11 || cpu == TYPE_ADCV12) in s3c_adc_select()
108 writel(client->channel & 0xf, in s3c_adc_select()
109 adc->regs + S3C2443_ADCMUX); in s3c_adc_select()
111 con |= S3C2410_ADCCON_SELMUX(client->channel); in s3c_adc_select()
114 writel(con, adc->regs + S3C2410_ADCCON); in s3c_adc_select()
120 readl(adc->regs + S3C2410_ADCCON), in s3c_adc_dbgshow()
121 readl(adc->regs + S3C2410_ADCTSC), in s3c_adc_dbgshow()
122 readl(adc->regs + S3C2410_ADCDLY)); in s3c_adc_dbgshow()
127 struct s3c_adc_client *next = adc->ts_pend; in s3c_adc_try()
132 list_del(&next->pend); in s3c_adc_try()
134 adc->ts_pend = NULL; in s3c_adc_try()
138 adc->cur = next; in s3c_adc_try()
153 return -EINVAL; in s3c_adc_start()
156 spin_lock_irqsave(&adc->lock, flags); in s3c_adc_start()
158 if (client->is_ts && adc->ts_pend) { in s3c_adc_start()
159 spin_unlock_irqrestore(&adc->lock, flags); in s3c_adc_start()
160 return -EAGAIN; in s3c_adc_start()
163 client->channel = channel; in s3c_adc_start()
164 client->nr_samples = nr_samples; in s3c_adc_start()
166 if (client->is_ts) in s3c_adc_start()
167 adc->ts_pend = client; in s3c_adc_start()
169 list_add_tail(&client->pend, &adc_pending); in s3c_adc_start()
171 if (!adc->cur) in s3c_adc_start()
174 spin_unlock_irqrestore(&adc->lock, flags); in s3c_adc_start()
183 client->result = v; in s3c_convert_done()
184 wake_up(client->wait); in s3c_convert_done()
192 client->convert_cb = s3c_convert_done; in s3c_adc_read()
193 client->wait = &wake; in s3c_adc_read()
194 client->result = -1; in s3c_adc_read()
200 ret = wait_event_timeout(wake, client->result >= 0, HZ / 2); in s3c_adc_read()
201 if (client->result < 0) { in s3c_adc_read()
202 ret = -ETIMEDOUT; in s3c_adc_read()
206 client->convert_cb = NULL; in s3c_adc_read()
207 return client->result; in s3c_adc_read()
235 return ERR_PTR(-EINVAL); in s3c_adc_register()
239 return ERR_PTR(-ENOMEM); in s3c_adc_register()
241 client->pdev = pdev; in s3c_adc_register()
242 client->is_ts = is_ts; in s3c_adc_register()
243 client->select_cb = select; in s3c_adc_register()
244 client->convert_cb = conv; in s3c_adc_register()
254 spin_lock_irqsave(&adc_dev->lock, flags); in s3c_adc_release()
257 if (adc_dev->cur == client) in s3c_adc_release()
258 adc_dev->cur = NULL; in s3c_adc_release()
259 if (adc_dev->ts_pend == client) in s3c_adc_release()
260 adc_dev->ts_pend = NULL; in s3c_adc_release()
268 list_del(&tmp->pend); in s3c_adc_release()
272 if (adc_dev->cur == NULL) in s3c_adc_release()
275 spin_unlock_irqrestore(&adc_dev->lock, flags); in s3c_adc_release()
283 struct s3c_adc_client *client = adc->cur; in s3c_adc_irq()
284 enum s3c_cpu_type cpu = platform_get_device_id(adc->pdev)->driver_data; in s3c_adc_irq() local
288 dev_warn(&adc->pdev->dev, "%s: no adc pending\n", __func__); in s3c_adc_irq()
292 data0 = readl(adc->regs + S3C2410_ADCDAT0); in s3c_adc_irq()
293 data1 = readl(adc->regs + S3C2410_ADCDAT1); in s3c_adc_irq()
294 adc_dbg(adc, "read %d: 0x%04x, 0x%04x\n", client->nr_samples, data0, data1); in s3c_adc_irq()
296 client->nr_samples--; in s3c_adc_irq()
298 if (cpu == TYPE_ADCV1 || cpu == TYPE_ADCV11) { in s3c_adc_irq()
302 /* S3C2416/S3C64XX/S5P ADC resolution is 12-bit */ in s3c_adc_irq()
307 if (client->convert_cb) in s3c_adc_irq()
308 (client->convert_cb)(client, data0, data1, &client->nr_samples); in s3c_adc_irq()
310 if (client->nr_samples > 0) { in s3c_adc_irq()
313 client->select_cb(client, 1); in s3c_adc_irq()
316 spin_lock(&adc->lock); in s3c_adc_irq()
317 (client->select_cb)(client, 0); in s3c_adc_irq()
318 adc->cur = NULL; in s3c_adc_irq()
321 spin_unlock(&adc->lock); in s3c_adc_irq()
325 if (cpu == TYPE_ADCV2 || cpu == TYPE_ADCV3) { in s3c_adc_irq()
327 writel(0, adc->regs + S3C64XX_ADCCLRINT); in s3c_adc_irq()
334 struct device *dev = &pdev->dev; in s3c_adc_probe()
336 enum s3c_cpu_type cpu = platform_get_device_id(pdev)->driver_data; in s3c_adc_probe() local
342 return -ENOMEM; in s3c_adc_probe()
344 spin_lock_init(&adc->lock); in s3c_adc_probe()
346 adc->pdev = pdev; in s3c_adc_probe()
347 adc->prescale = S3C2410_ADCCON_PRSCVL(49); in s3c_adc_probe()
349 adc->vdd = devm_regulator_get(dev, "vdd"); in s3c_adc_probe()
350 if (IS_ERR(adc->vdd)) { in s3c_adc_probe()
351 dev_err(dev, "operating without regulator \"vdd\" .\n"); in s3c_adc_probe()
352 return PTR_ERR(adc->vdd); in s3c_adc_probe()
355 adc->irq = platform_get_irq(pdev, 1); in s3c_adc_probe()
356 if (adc->irq <= 0) in s3c_adc_probe()
357 return -ENOENT; in s3c_adc_probe()
359 ret = devm_request_irq(dev, adc->irq, s3c_adc_irq, 0, dev_name(dev), in s3c_adc_probe()
366 adc->clk = devm_clk_get(dev, "adc"); in s3c_adc_probe()
367 if (IS_ERR(adc->clk)) { in s3c_adc_probe()
369 return PTR_ERR(adc->clk); in s3c_adc_probe()
372 adc->regs = devm_platform_ioremap_resource(pdev, 0); in s3c_adc_probe()
373 if (IS_ERR(adc->regs)) in s3c_adc_probe()
374 return PTR_ERR(adc->regs); in s3c_adc_probe()
376 ret = regulator_enable(adc->vdd); in s3c_adc_probe()
380 clk_prepare_enable(adc->clk); in s3c_adc_probe()
382 tmp = adc->prescale | S3C2410_ADCCON_PRSCEN; in s3c_adc_probe()
384 /* Enable 12-bit ADC resolution */ in s3c_adc_probe()
385 if (cpu == TYPE_ADCV12) in s3c_adc_probe()
387 if (cpu == TYPE_ADCV2 || cpu == TYPE_ADCV3) in s3c_adc_probe()
390 writel(tmp, adc->regs + S3C2410_ADCCON); in s3c_adc_probe()
404 clk_disable_unprepare(adc->clk); in s3c_adc_remove()
405 regulator_disable(adc->vdd); in s3c_adc_remove()
417 spin_lock_irqsave(&adc->lock, flags); in s3c_adc_suspend()
419 con = readl(adc->regs + S3C2410_ADCCON); in s3c_adc_suspend()
421 writel(con, adc->regs + S3C2410_ADCCON); in s3c_adc_suspend()
423 disable_irq(adc->irq); in s3c_adc_suspend()
424 spin_unlock_irqrestore(&adc->lock, flags); in s3c_adc_suspend()
425 clk_disable(adc->clk); in s3c_adc_suspend()
426 regulator_disable(adc->vdd); in s3c_adc_suspend()
435 enum s3c_cpu_type cpu = platform_get_device_id(pdev)->driver_data; in s3c_adc_resume() local
439 ret = regulator_enable(adc->vdd); in s3c_adc_resume()
442 clk_enable(adc->clk); in s3c_adc_resume()
443 enable_irq(adc->irq); in s3c_adc_resume()
445 tmp = adc->prescale | S3C2410_ADCCON_PRSCEN; in s3c_adc_resume()
447 /* Enable 12-bit ADC resolution */ in s3c_adc_resume()
448 if (cpu == TYPE_ADCV12) in s3c_adc_resume()
450 if (cpu == TYPE_ADCV2 || cpu == TYPE_ADCV3) in s3c_adc_resume()
453 writel(tmp, adc->regs + S3C2410_ADCCON); in s3c_adc_resume()
465 .name = "s3c24xx-adc",
468 .name = "s3c2443-adc",
471 .name = "s3c2416-adc",
474 .name = "s3c64xx-adc",
477 .name = "samsung-adc-v3",
492 .name = "s3c-adc",