Lines Matching +full:designware +full:- +full:i2c
1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Synopsys DesignWare I2C adapter driver (master only).
5 * Based on the TI DAVINCI I2C adapter driver.
16 #include <linux/i2c.h>
26 #include "i2c-designware-core.h"
28 #define DRIVER_NAME "i2c-designware-pci"
88 struct dw_i2c_dev *dev = dev_get_drvdata(&pdev->dev); in mfld_setup()
90 switch (pdev->device) { in mfld_setup()
92 dev->timings.bus_freq_hz = I2C_MAX_STANDARD_MODE_FREQ; in mfld_setup()
96 c->bus_num = pdev->device - 0x817 + 3; in mfld_setup()
101 c->bus_num = pdev->device - 0x82C + 0; in mfld_setup()
104 return -ENODEV; in mfld_setup()
110 * On Intel Merrifield the user visible i2c buses are enumerated in mrfld_setup()
115 switch (PCI_SLOT(pdev->devfn)) { in mrfld_setup()
117 c->bus_num = PCI_FUNC(pdev->devfn) + 0 + 1; in mrfld_setup()
120 c->bus_num = PCI_FUNC(pdev->devfn) + 4 + 1; in mrfld_setup()
123 return -ENODEV; in mrfld_setup()
133 .bus_num = -1,
138 .bus_num = -1,
143 .bus_num = -1,
147 .bus_num = -1,
151 .bus_num = -1,
155 .bus_num = -1,
165 i_dev->suspended = true; in i2c_dw_pci_suspend()
166 i_dev->disable(i_dev); in i2c_dw_pci_suspend()
176 ret = i_dev->init(i_dev); in i2c_dw_pci_resume()
177 i_dev->suspended = false; in i2c_dw_pci_resume()
195 if (id->driver_data >= ARRAY_SIZE(dw_pci_controllers)) { in i2c_dw_pci_probe()
196 dev_err(&pdev->dev, "%s: invalid driver data %ld\n", __func__, in i2c_dw_pci_probe()
197 id->driver_data); in i2c_dw_pci_probe()
198 return -EINVAL; in i2c_dw_pci_probe()
201 controller = &dw_pci_controllers[id->driver_data]; in i2c_dw_pci_probe()
205 dev_err(&pdev->dev, "Failed to enable I2C PCI device (%d)\n", in i2c_dw_pci_probe()
214 dev_err(&pdev->dev, "I/O memory remapping failed\n"); in i2c_dw_pci_probe()
218 dev = devm_kzalloc(&pdev->dev, sizeof(struct dw_i2c_dev), GFP_KERNEL); in i2c_dw_pci_probe()
220 return -ENOMEM; in i2c_dw_pci_probe()
226 dev->get_clk_rate_khz = controller->get_clk_rate_khz; in i2c_dw_pci_probe()
227 dev->timings.bus_freq_hz = I2C_MAX_FAST_MODE_FREQ; in i2c_dw_pci_probe()
228 dev->base = pcim_iomap_table(pdev)[0]; in i2c_dw_pci_probe()
229 dev->dev = &pdev->dev; in i2c_dw_pci_probe()
230 dev->irq = pci_irq_vector(pdev, 0); in i2c_dw_pci_probe()
231 dev->flags |= controller->flags; in i2c_dw_pci_probe()
235 if (controller->setup) { in i2c_dw_pci_probe()
236 r = controller->setup(pdev, controller); in i2c_dw_pci_probe()
245 if (has_acpi_companion(&pdev->dev)) in i2c_dw_pci_probe()
246 i2c_dw_acpi_configure(&pdev->dev); in i2c_dw_pci_probe()
256 if (controller->scl_sda_cfg) { in i2c_dw_pci_probe()
257 cfg = controller->scl_sda_cfg; in i2c_dw_pci_probe()
258 dev->ss_hcnt = cfg->ss_hcnt; in i2c_dw_pci_probe()
259 dev->fs_hcnt = cfg->fs_hcnt; in i2c_dw_pci_probe()
260 dev->ss_lcnt = cfg->ss_lcnt; in i2c_dw_pci_probe()
261 dev->fs_lcnt = cfg->fs_lcnt; in i2c_dw_pci_probe()
262 dev->sda_hold_time = cfg->sda_hold; in i2c_dw_pci_probe()
265 adap = &dev->adapter; in i2c_dw_pci_probe()
266 adap->owner = THIS_MODULE; in i2c_dw_pci_probe()
267 adap->class = 0; in i2c_dw_pci_probe()
268 ACPI_COMPANION_SET(&adap->dev, ACPI_COMPANION(&pdev->dev)); in i2c_dw_pci_probe()
269 adap->nr = controller->bus_num; in i2c_dw_pci_probe()
277 pm_runtime_set_autosuspend_delay(&pdev->dev, 1000); in i2c_dw_pci_probe()
278 pm_runtime_use_autosuspend(&pdev->dev); in i2c_dw_pci_probe()
279 pm_runtime_put_autosuspend(&pdev->dev); in i2c_dw_pci_probe()
280 pm_runtime_allow(&pdev->dev); in i2c_dw_pci_probe()
289 dev->disable(dev); in i2c_dw_pci_remove()
290 pm_runtime_forbid(&pdev->dev); in i2c_dw_pci_remove()
291 pm_runtime_get_noresume(&pdev->dev); in i2c_dw_pci_remove()
293 i2c_del_adapter(&dev->adapter); in i2c_dw_pci_remove()
294 devm_free_irq(&pdev->dev, dev->irq, dev); in i2c_dw_pci_remove()
299 MODULE_ALIAS("i2c_designware-pci");
331 /* Elkhart Lake (PSE I2C) */
357 MODULE_DESCRIPTION("Synopsys DesignWare PCI I2C bus adapter");