1 // SPDX-License-Identifier: GPL-2.0
10 #include <linux/platform_data/rtc-ds2404.h>
51 	ds2404_gpio[DS2404_RST].gpio = pdata->gpio_rst;  in ds2404_gpio_map()
52 	ds2404_gpio[DS2404_CLK].gpio = pdata->gpio_clk;  in ds2404_gpio_map()
53 	ds2404_gpio[DS2404_DQ].gpio = pdata->gpio_dq;  in ds2404_gpio_map()
58 			dev_err(&pdev->dev, "error mapping gpio %s: %d\n",  in ds2404_gpio_map()
66 	chip->gpio = ds2404_gpio;  in ds2404_gpio_map()
70 	while (--i >= 0)  in ds2404_gpio_map()
133 	while (length--)  in ds2404_read_memory()
141 	u8 ta01, ta02, es;  in ds2404_write_memory()  local
156 	es = ds2404_read_byte(dev);  in ds2404_write_memory()
169 	ds2404_write_byte(dev, es);  in ds2404_write_memory()
178 	u8 in[1] = { 0x10 }; /* enable oscillator */  in ds2404_enable_osc()
208 	struct ds2404_platform_data *pdata = dev_get_platdata(&pdev->dev);  in rtc_probe()
210 	int retval = -EBUSY;  in rtc_probe()
212 	chip = devm_kzalloc(&pdev->dev, sizeof(struct ds2404), GFP_KERNEL);  in rtc_probe()
214 		return -ENOMEM;  in rtc_probe()
216 	chip->rtc = devm_rtc_allocate_device(&pdev->dev);  in rtc_probe()
217 	if (IS_ERR(chip->rtc))  in rtc_probe()
218 		return PTR_ERR(chip->rtc);  in rtc_probe()
224 	retval = devm_add_action_or_reset(&pdev->dev, ds2404_gpio_unmap, chip);  in rtc_probe()
228 	dev_info(&pdev->dev, "using GPIOs RST:%d, CLK:%d, DQ:%d\n",  in rtc_probe()
229 		 chip->gpio[DS2404_RST].gpio, chip->gpio[DS2404_CLK].gpio,  in rtc_probe()
230 		 chip->gpio[DS2404_DQ].gpio);  in rtc_probe()
234 	chip->rtc->ops = &ds2404_rtc_ops;  in rtc_probe()
235 	chip->rtc->range_max = U32_MAX;  in rtc_probe()
237 	retval = rtc_register_device(chip->rtc);  in rtc_probe()
241 	ds2404_enable_osc(&pdev->dev);  in rtc_probe()