38 static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev)  in i2c_dw_get_clk_rate_khz()  argument
40 	return clk_get_rate(dev->clk) / KILO;  in i2c_dw_get_clk_rate_khz()
75 	struct dw_i2c_dev *dev = context;  in bt1_i2c_read()  local
82 	ret = regmap_write(dev->sysmap, BT1_I2C_CTL,  in bt1_i2c_read()
87 	return regmap_read(dev->sysmap, BT1_I2C_DO, val);  in bt1_i2c_read()
92 	struct dw_i2c_dev *dev = context;  in bt1_i2c_write()  local
95 	ret = regmap_write(dev->sysmap, BT1_I2C_DI, val);  in bt1_i2c_write()
99 	return regmap_write(dev->sysmap, BT1_I2C_CTL,  in bt1_i2c_write()
113 static int bt1_i2c_request_regs(struct dw_i2c_dev *dev)  in bt1_i2c_request_regs()  argument
115 	dev->sysmap = syscon_node_to_regmap(dev->dev->of_node->parent);  in bt1_i2c_request_regs()
116 	if (IS_ERR(dev->sysmap))  in bt1_i2c_request_regs()
117 		return PTR_ERR(dev->sysmap);  in bt1_i2c_request_regs()
119 	dev->map = devm_regmap_init(dev->dev, NULL, dev, &bt1_i2c_cfg);  in bt1_i2c_request_regs()
120 	return PTR_ERR_OR_ZERO(dev->map);  in bt1_i2c_request_regs()
127 static int mscc_twi_set_sda_hold_time(struct dw_i2c_dev *dev)  in mscc_twi_set_sda_hold_time()  argument
129 	writel((dev->sda_hold_time << 1) | MSCC_ICPU_CFG_TWI_DELAY_ENABLE,  in mscc_twi_set_sda_hold_time()
130 	       dev->ext + MSCC_ICPU_CFG_TWI_DELAY);  in mscc_twi_set_sda_hold_time()
137 	struct dw_i2c_dev *dev = platform_get_drvdata(pdev);  in dw_i2c_of_configure()  local
139 	switch (dev->flags & MODEL_MASK) {  in dw_i2c_of_configure()
141 		dev->ext = devm_platform_ioremap_resource(pdev, 1);  in dw_i2c_of_configure()
142 		if (!IS_ERR(dev->ext))  in dw_i2c_of_configure()
143 			dev->set_sda_hold_time = mscc_twi_set_sda_hold_time;  in dw_i2c_of_configure()
160 static int bt1_i2c_request_regs(struct dw_i2c_dev *dev)  in bt1_i2c_request_regs()  argument
171 static int txgbe_i2c_request_regs(struct dw_i2c_dev *dev)  in txgbe_i2c_request_regs()  argument
173 	dev->map = dev_get_regmap(dev->dev->parent, NULL);  in txgbe_i2c_request_regs()
174 	if (!dev->map)  in txgbe_i2c_request_regs()
180 static void dw_i2c_plat_pm_cleanup(struct dw_i2c_dev *dev)  in dw_i2c_plat_pm_cleanup()  argument
182 	pm_runtime_disable(dev->dev);  in dw_i2c_plat_pm_cleanup()
184 	if (dev->shared_with_punit)  in dw_i2c_plat_pm_cleanup()
185 		pm_runtime_put_noidle(dev->dev);  in dw_i2c_plat_pm_cleanup()
188 static int dw_i2c_plat_request_regs(struct dw_i2c_dev *dev)  in dw_i2c_plat_request_regs()  argument
190 	struct platform_device *pdev = to_platform_device(dev->dev);  in dw_i2c_plat_request_regs()
193 	switch (dev->flags & MODEL_MASK) {  in dw_i2c_plat_request_regs()
195 		ret = bt1_i2c_request_regs(dev);  in dw_i2c_plat_request_regs()
198 		ret = txgbe_i2c_request_regs(dev);  in dw_i2c_plat_request_regs()
201 		dev->base = devm_platform_ioremap_resource(pdev, 0);  in dw_i2c_plat_request_regs()
202 		ret = PTR_ERR_OR_ZERO(dev->base);  in dw_i2c_plat_request_regs()
234 static int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev)  in i2c_dw_probe_lock_support()  argument
242 	dev->semaphore_idx = -1;  in i2c_dw_probe_lock_support()
245 		ret = ptr->probe(dev);  in i2c_dw_probe_lock_support()
260 		dev->semaphore_idx = i;  in i2c_dw_probe_lock_support()
267 static void i2c_dw_remove_lock_support(struct dw_i2c_dev *dev)  in i2c_dw_remove_lock_support()  argument
269 	if (dev->semaphore_idx < 0)  in i2c_dw_remove_lock_support()
272 	if (i2c_dw_semaphore_cb_table[dev->semaphore_idx].remove)  in i2c_dw_remove_lock_support()
273 		i2c_dw_semaphore_cb_table[dev->semaphore_idx].remove(dev);  in i2c_dw_remove_lock_support()
279 	struct dw_i2c_dev *dev;  in dw_i2c_plat_probe()  local
287 	dev = devm_kzalloc(&pdev->dev, sizeof(struct dw_i2c_dev), GFP_KERNEL);  in dw_i2c_plat_probe()
288 	if (!dev)  in dw_i2c_plat_probe()
291 	dev->flags = (uintptr_t)device_get_match_data(&pdev->dev);  in dw_i2c_plat_probe()
292 	if (device_property_present(&pdev->dev, "wx,i2c-snps-model"))  in dw_i2c_plat_probe()
293 		dev->flags = MODEL_WANGXUN_SP;  in dw_i2c_plat_probe()
295 	dev->dev = &pdev->dev;  in dw_i2c_plat_probe()
296 	dev->irq = irq;  in dw_i2c_plat_probe()
297 	platform_set_drvdata(pdev, dev);  in dw_i2c_plat_probe()
299 	ret = dw_i2c_plat_request_regs(dev);  in dw_i2c_plat_probe()
303 	dev->rst = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);  in dw_i2c_plat_probe()
304 	if (IS_ERR(dev->rst))  in dw_i2c_plat_probe()
305 		return PTR_ERR(dev->rst);  in dw_i2c_plat_probe()
307 	reset_control_deassert(dev->rst);  in dw_i2c_plat_probe()
309 	t = &dev->timings;  in dw_i2c_plat_probe()
310 	i2c_parse_fw_timings(&pdev->dev, t, false);  in dw_i2c_plat_probe()
312 	i2c_dw_adjust_bus_speed(dev);  in dw_i2c_plat_probe()
314 	if (pdev->dev.of_node)  in dw_i2c_plat_probe()
317 	if (has_acpi_companion(&pdev->dev))  in dw_i2c_plat_probe()
318 		i2c_dw_acpi_configure(&pdev->dev);  in dw_i2c_plat_probe()
320 	ret = i2c_dw_validate_speed(dev);  in dw_i2c_plat_probe()
324 	ret = i2c_dw_probe_lock_support(dev);  in dw_i2c_plat_probe()
328 	i2c_dw_configure(dev);  in dw_i2c_plat_probe()
331 	dev->pclk = devm_clk_get_optional(&pdev->dev, "pclk");  in dw_i2c_plat_probe()
332 	if (IS_ERR(dev->pclk)) {  in dw_i2c_plat_probe()
333 		ret = PTR_ERR(dev->pclk);  in dw_i2c_plat_probe()
337 	dev->clk = devm_clk_get_optional(&pdev->dev, NULL);  in dw_i2c_plat_probe()
338 	if (IS_ERR(dev->clk)) {  in dw_i2c_plat_probe()
339 		ret = PTR_ERR(dev->clk);  in dw_i2c_plat_probe()
343 	ret = i2c_dw_prepare_clk(dev, true);  in dw_i2c_plat_probe()
347 	if (dev->clk) {  in dw_i2c_plat_probe()
350 		dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz;  in dw_i2c_plat_probe()
351 		clk_khz = dev->get_clk_rate_khz(dev);  in dw_i2c_plat_probe()
353 		if (!dev->sda_hold_time && t->sda_hold_ns)  in dw_i2c_plat_probe()
354 			dev->sda_hold_time =  in dw_i2c_plat_probe()
358 	adap = &dev->adapter;  in dw_i2c_plat_probe()
362 	ACPI_COMPANION_SET(&adap->dev, ACPI_COMPANION(&pdev->dev));  in dw_i2c_plat_probe()
363 	adap->dev.of_node = pdev->dev.of_node;  in dw_i2c_plat_probe()
366 	if (dev->flags & ACCESS_NO_IRQ_SUSPEND) {  in dw_i2c_plat_probe()
367 		dev_pm_set_driver_flags(&pdev->dev,  in dw_i2c_plat_probe()
370 		dev_pm_set_driver_flags(&pdev->dev,  in dw_i2c_plat_probe()
375 	device_enable_async_suspend(&pdev->dev);  in dw_i2c_plat_probe()
378 	WARN_ON(pm_runtime_enabled(&pdev->dev));  in dw_i2c_plat_probe()
380 	pm_runtime_set_autosuspend_delay(&pdev->dev, 1000);  in dw_i2c_plat_probe()
381 	pm_runtime_use_autosuspend(&pdev->dev);  in dw_i2c_plat_probe()
382 	pm_runtime_set_active(&pdev->dev);  in dw_i2c_plat_probe()
384 	if (dev->shared_with_punit)  in dw_i2c_plat_probe()
385 		pm_runtime_get_noresume(&pdev->dev);  in dw_i2c_plat_probe()
387 	pm_runtime_enable(&pdev->dev);  in dw_i2c_plat_probe()
389 	ret = i2c_dw_probe(dev);  in dw_i2c_plat_probe()
396 	dw_i2c_plat_pm_cleanup(dev);  in dw_i2c_plat_probe()
398 	reset_control_assert(dev->rst);  in dw_i2c_plat_probe()
404 	struct dw_i2c_dev *dev = platform_get_drvdata(pdev);  in dw_i2c_plat_remove()  local
406 	pm_runtime_get_sync(&pdev->dev);  in dw_i2c_plat_remove()
408 	i2c_del_adapter(&dev->adapter);  in dw_i2c_plat_remove()
410 	dev->disable(dev);  in dw_i2c_plat_remove()
412 	pm_runtime_dont_use_autosuspend(&pdev->dev);  in dw_i2c_plat_remove()
413 	pm_runtime_put_sync(&pdev->dev);  in dw_i2c_plat_remove()
414 	dw_i2c_plat_pm_cleanup(dev);  in dw_i2c_plat_remove()
416 	i2c_dw_remove_lock_support(dev);  in dw_i2c_plat_remove()
418 	reset_control_assert(dev->rst);  in dw_i2c_plat_remove()
421 static int dw_i2c_plat_prepare(struct device *dev)  in dw_i2c_plat_prepare()  argument
429 	return !has_acpi_companion(dev);  in dw_i2c_plat_prepare()
432 static int dw_i2c_plat_runtime_suspend(struct device *dev)  in dw_i2c_plat_runtime_suspend()  argument
434 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);  in dw_i2c_plat_runtime_suspend()
445 static int dw_i2c_plat_suspend(struct device *dev)  in dw_i2c_plat_suspend()  argument
447 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);  in dw_i2c_plat_suspend()
451 	return dw_i2c_plat_runtime_suspend(dev);  in dw_i2c_plat_suspend()
454 static int dw_i2c_plat_runtime_resume(struct device *dev)  in dw_i2c_plat_runtime_resume()  argument
456 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);  in dw_i2c_plat_runtime_resume()
466 static int dw_i2c_plat_resume(struct device *dev)  in dw_i2c_plat_resume()  argument
468 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);  in dw_i2c_plat_resume()
470 	dw_i2c_plat_runtime_resume(dev);  in dw_i2c_plat_resume()