drivers/rtc/rtc-mcp795.c

63 	int ret;
68 	ret = spi_write_then_read(spi, tx, sizeof(tx), buf, count);
70 	if (ret)
74 	return ret;
80 	int ret;
87 	ret = spi_write(spi, tx, 2 + count);
89 	if (ret)
93 	return ret;
98 	int ret;
101 	ret = mcp795_rtcc_read(dev, addr, &tmp, 1);
102 	if (ret)
103 		return ret;
107 		ret = mcp795_rtcc_write(dev, addr, &tmp, 1);
110 	return ret;
116 	int ret;
119 	ret = mcp795_rtcc_set_bits(dev, MCP795_REG_SECONDS, MCP795_ST_BIT, 0);
120 	if (ret)
121 		return ret;
122 	ret = mcp795_rtcc_read(dev, MCP795_REG_CONTROL, &data, 1);
123 	if (ret)
124 		return ret;
126 	ret = mcp795_rtcc_set_bits(
128 	if (ret)
129 		return ret;
133 		ret = mcp795_rtcc_read(dev, MCP795_REG_DAY, &data, 1);
134 		if (ret)
141 	return !retries ? -EIO : ret;
148 		int ret;
150 		ret = mcp795_rtcc_set_bits(
152 		if (ret)
153 			return ret;
162 	int ret;
168 		ret = mcp795_rtcc_set_bits(dev, MCP795_REG_ALM0_DAY,
170 		if (ret)
171 			return ret;
173 		ret = mcp795_rtcc_set_bits(dev, MCP795_REG_CONTROL,
177 		ret = mcp795_rtcc_set_bits(dev, MCP795_REG_CONTROL,
180 	return ret;
185 	int ret;
190 	ret = mcp795_stop_oscillator(dev, &extosc);
191 	if (ret)
192 		return ret;
195 	ret = mcp795_rtcc_read(dev, MCP795_REG_SECONDS, data, sizeof(data));
197 	if (ret)
198 		return ret;
216 	ret = mcp795_rtcc_write(dev, MCP795_REG_SECONDS, data, 5);
217 	if (ret)
218 		return ret;
220 	ret = mcp795_rtcc_write(dev, MCP795_REG_MONTH, &data[5], 2);
221 	if (ret)
222 		return ret;
228 	ret = mcp795_start_oscillator(dev, extosc ? &extosc : NULL);
229 	if (ret)
230 		return ret;
239 	int ret;
242 	ret = mcp795_rtcc_read(dev, MCP795_REG_SECONDS, data, sizeof(data));
244 	if (ret)
245 		return ret;
266 	int ret;
269 	ret = mcp795_read_time(dev, &now_tm);
270 	if (ret)
271 		return ret;
282 	ret = mcp795_update_alarm(dev, false);
283 	if (ret)
284 		return ret;
286 	ret = mcp795_rtcc_read(dev, MCP795_REG_ALM0_SECONDS, tmp, sizeof(tmp));
287 	if (ret)
288 		return ret;
303 	ret = mcp795_rtcc_write(dev, MCP795_REG_ALM0_SECONDS, tmp, sizeof(tmp));
304 	if (ret)
305 		return ret;
309 		ret = mcp795_update_alarm(dev, true);
310 		if (ret)
311 			return ret;
322 	int ret;
324 	ret = mcp795_rtcc_read(
326 	if (ret)
327 		return ret;
353 	int ret;
361 	ret = mcp795_update_alarm(&spi->dev, false);
362 	if (ret)
364 			"Failed to disable alarm in IRQ (ret=%d)\n", ret);
383 	int ret;
387 	ret = spi_setup(spi);
388 	if (ret) {
390 		return ret;
413 		ret = devm_request_threaded_irq(&spi->dev, spi->irq, NULL,
416 		if (ret)
418 						spi->irq, ret);