Lines Matching refs:dev
45 static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev) in i2c_dw_get_clk_rate_khz() argument
47 return clk_get_rate(dev->clk)/1000; in i2c_dw_get_clk_rate_khz()
71 acpi_handle handle = ACPI_HANDLE(&pdev->dev); in dw_i2c_acpi_params()
95 struct dw_i2c_dev *dev = platform_get_drvdata(pdev); in dw_i2c_acpi_configure() local
98 dev->adapter.nr = -1; in dw_i2c_acpi_configure()
99 dev->tx_fifo_depth = 32; in dw_i2c_acpi_configure()
100 dev->rx_fifo_depth = 32; in dw_i2c_acpi_configure()
106 dw_i2c_acpi_params(pdev, "SSCN", &dev->ss_hcnt, &dev->ss_lcnt, NULL); in dw_i2c_acpi_configure()
107 dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt, in dw_i2c_acpi_configure()
108 &dev->sda_hold_time); in dw_i2c_acpi_configure()
110 id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev); in dw_i2c_acpi_configure()
112 dev->accessor_flags |= (u32)id->driver_data; in dw_i2c_acpi_configure()
137 struct dw_i2c_dev *dev; in dw_i2c_plat_probe() local
148 dev = devm_kzalloc(&pdev->dev, sizeof(struct dw_i2c_dev), GFP_KERNEL); in dw_i2c_plat_probe()
149 if (!dev) in dw_i2c_plat_probe()
153 dev->base = devm_ioremap_resource(&pdev->dev, mem); in dw_i2c_plat_probe()
154 if (IS_ERR(dev->base)) in dw_i2c_plat_probe()
155 return PTR_ERR(dev->base); in dw_i2c_plat_probe()
157 dev->dev = &pdev->dev; in dw_i2c_plat_probe()
158 dev->irq = irq; in dw_i2c_plat_probe()
159 platform_set_drvdata(pdev, dev); in dw_i2c_plat_probe()
164 if (has_acpi_companion(&pdev->dev)) { in dw_i2c_plat_probe()
166 } else if (pdev->dev.of_node) { in dw_i2c_plat_probe()
167 of_property_read_u32(pdev->dev.of_node, in dw_i2c_plat_probe()
170 of_property_read_u32(pdev->dev.of_node, in dw_i2c_plat_probe()
172 &dev->sda_falling_time); in dw_i2c_plat_probe()
173 of_property_read_u32(pdev->dev.of_node, in dw_i2c_plat_probe()
175 &dev->scl_falling_time); in dw_i2c_plat_probe()
177 of_property_read_u32(pdev->dev.of_node, "clock-frequency", in dw_i2c_plat_probe()
184 dev_err(&pdev->dev, "Only 100kHz and 400kHz supported"); in dw_i2c_plat_probe()
188 pdata = dev_get_platdata(&pdev->dev); in dw_i2c_plat_probe()
193 r = i2c_dw_eval_lock_support(dev); in dw_i2c_plat_probe()
197 dev->functionality = in dw_i2c_plat_probe()
205 dev->master_cfg = DW_IC_CON_MASTER | DW_IC_CON_SLAVE_DISABLE | in dw_i2c_plat_probe()
208 dev->master_cfg = DW_IC_CON_MASTER | DW_IC_CON_SLAVE_DISABLE | in dw_i2c_plat_probe()
211 dev->clk = devm_clk_get(&pdev->dev, NULL); in dw_i2c_plat_probe()
212 dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz; in dw_i2c_plat_probe()
213 if (IS_ERR(dev->clk)) in dw_i2c_plat_probe()
214 return PTR_ERR(dev->clk); in dw_i2c_plat_probe()
215 clk_prepare_enable(dev->clk); in dw_i2c_plat_probe()
217 if (!dev->sda_hold_time && ht) { in dw_i2c_plat_probe()
218 u32 ic_clk = dev->get_clk_rate_khz(dev); in dw_i2c_plat_probe()
220 dev->sda_hold_time = div_u64((u64)ic_clk * ht + 500000, in dw_i2c_plat_probe()
224 if (!dev->tx_fifo_depth) { in dw_i2c_plat_probe()
225 u32 param1 = i2c_dw_read_comp_param(dev); in dw_i2c_plat_probe()
227 dev->tx_fifo_depth = ((param1 >> 16) & 0xff) + 1; in dw_i2c_plat_probe()
228 dev->rx_fifo_depth = ((param1 >> 8) & 0xff) + 1; in dw_i2c_plat_probe()
229 dev->adapter.nr = pdev->id; in dw_i2c_plat_probe()
232 adap = &dev->adapter; in dw_i2c_plat_probe()
235 ACPI_COMPANION_SET(&adap->dev, ACPI_COMPANION(&pdev->dev)); in dw_i2c_plat_probe()
236 adap->dev.of_node = pdev->dev.of_node; in dw_i2c_plat_probe()
238 if (dev->pm_runtime_disabled) { in dw_i2c_plat_probe()
239 pm_runtime_forbid(&pdev->dev); in dw_i2c_plat_probe()
241 pm_runtime_set_autosuspend_delay(&pdev->dev, 1000); in dw_i2c_plat_probe()
242 pm_runtime_use_autosuspend(&pdev->dev); in dw_i2c_plat_probe()
243 pm_runtime_set_active(&pdev->dev); in dw_i2c_plat_probe()
244 pm_runtime_enable(&pdev->dev); in dw_i2c_plat_probe()
247 r = i2c_dw_probe(dev); in dw_i2c_plat_probe()
248 if (r && !dev->pm_runtime_disabled) in dw_i2c_plat_probe()
249 pm_runtime_disable(&pdev->dev); in dw_i2c_plat_probe()
256 struct dw_i2c_dev *dev = platform_get_drvdata(pdev); in dw_i2c_plat_remove() local
258 pm_runtime_get_sync(&pdev->dev); in dw_i2c_plat_remove()
260 i2c_del_adapter(&dev->adapter); in dw_i2c_plat_remove()
262 i2c_dw_disable(dev); in dw_i2c_plat_remove()
264 pm_runtime_dont_use_autosuspend(&pdev->dev); in dw_i2c_plat_remove()
265 pm_runtime_put_sync(&pdev->dev); in dw_i2c_plat_remove()
266 if (!dev->pm_runtime_disabled) in dw_i2c_plat_remove()
267 pm_runtime_disable(&pdev->dev); in dw_i2c_plat_remove()
281 static int dw_i2c_plat_prepare(struct device *dev) in dw_i2c_plat_prepare() argument
283 return pm_runtime_suspended(dev); in dw_i2c_plat_prepare()
286 static void dw_i2c_plat_complete(struct device *dev) in dw_i2c_plat_complete() argument
288 if (dev->power.direct_complete) in dw_i2c_plat_complete()
289 pm_request_resume(dev); in dw_i2c_plat_complete()
297 static int dw_i2c_plat_suspend(struct device *dev) in dw_i2c_plat_suspend() argument
299 struct platform_device *pdev = to_platform_device(dev); in dw_i2c_plat_suspend()
308 static int dw_i2c_plat_resume(struct device *dev) in dw_i2c_plat_resume() argument
310 struct platform_device *pdev = to_platform_device(dev); in dw_i2c_plat_resume()