1 // SPDX-License-Identifier: GPL-2.0
12  * 3. FUSB302 USB Type-C Controller
16  * instantiate I²C clients for chips 2 - 4, so that standard I²C drivers
38  * Grrr, I severely dislike buggy BIOS-es. At least one BIOS enumerates
45 static int cht_int33fe_check_for_max17047(struct device *dev, void *data)  in cht_int33fe_check_for_max17047()  argument
47 	struct i2c_client **max17047 = data;  in cht_int33fe_check_for_max17047()
62 static const char * const max17047_suppliers[] = { "bq24190-charger" };
65 	PROPERTY_ENTRY_STRING_ARRAY("supplied-from", max17047_suppliers),
84 	PROPERTY_ENTRY_STRING("linux,extcon-name", "cht_wcove_pwrsrc"),
85 	PROPERTY_ENTRY_REF_ARRAY("usb-role-switch", fusb302_mux_refs),
115 	PROPERTY_ENTRY_STRING("data-role", "dual"),
116 	PROPERTY_ENTRY_STRING("power-role", "dual"),
117 	PROPERTY_ENTRY_STRING("try-power-role", "sink"),
118 	PROPERTY_ENTRY_U32_ARRAY("source-pdos", src_pdo),
119 	PROPERTY_ENTRY_U32_ARRAY("sink-pdos", snk_pdo),
120 	PROPERTY_ENTRY_U32("op-sink-microwatt", 2500000),
121 	PROPERTY_ENTRY_REF("orientation-switch", &pi3usb30532_node),
122 	PROPERTY_ENTRY_REF("mode-switch", &pi3usb30532_node),
145 	.name = "displayport-altmode",
161 static int cht_int33fe_setup_dp(struct cht_int33fe_data *data)  in cht_int33fe_setup_dp()  argument
168 		return -ENODEV;  in cht_int33fe_setup_dp()
172 	if (!pdev || pdev->vendor != PCI_VENDOR_ID_INTEL) {  in cht_int33fe_setup_dp()
174 		return -ENODEV;  in cht_int33fe_setup_dp()
177 	/* Then the DP-2 child device node */  in cht_int33fe_setup_dp()
178 	data->dp = device_get_named_child_node(&pdev->dev, "DD04");  in cht_int33fe_setup_dp()
180 	if (!data->dp)  in cht_int33fe_setup_dp()
181 		return -ENODEV;  in cht_int33fe_setup_dp()
183 	fwnode->secondary = ERR_PTR(-ENODEV);  in cht_int33fe_setup_dp()
184 	data->dp->secondary = fwnode;  in cht_int33fe_setup_dp()
189 static void cht_int33fe_remove_nodes(struct cht_int33fe_data *data)  in cht_int33fe_remove_nodes()  argument
193 	if (data->dp) {  in cht_int33fe_remove_nodes()
194 		data->dp->secondary = NULL;  in cht_int33fe_remove_nodes()
195 		fwnode_handle_put(data->dp);  in cht_int33fe_remove_nodes()
196 		data->dp = NULL;  in cht_int33fe_remove_nodes()
200 static void cht_int33fe_put_swnode(void *data)  in cht_int33fe_put_swnode()  argument
202 	struct fwnode_handle *fwnode = data;  in cht_int33fe_put_swnode()
208 static int cht_int33fe_add_nodes(struct device *dev, struct cht_int33fe_data *data)  in cht_int33fe_add_nodes()  argument
214 	 * There is no ACPI device node for the USB role mux, so we need to wait  in cht_int33fe_add_nodes()
217 	 * -EPROBE_DEFER until the mux device is registered.  in cht_int33fe_add_nodes()
219 	 * FIXME: the relevant software node exists in intel-xhci-usb-role-switch  in cht_int33fe_add_nodes()
220 	 * and - if exported - could be used to set up a static reference.  in cht_int33fe_add_nodes()
222 	mux_ref_node = software_node_find_by_name(NULL, "intel-xhci-usb-sw");  in cht_int33fe_add_nodes()
224 		return -EPROBE_DEFER;  in cht_int33fe_add_nodes()
232 	 * Update node used in "usb-role-switch" property. Note that we  in cht_int33fe_add_nodes()
248 	ret = cht_int33fe_setup_dp(data);  in cht_int33fe_add_nodes()
255 	cht_int33fe_remove_nodes(data);  in cht_int33fe_add_nodes()
261 cht_int33fe_register_max17047(struct device *dev, struct cht_int33fe_data *data)  in cht_int33fe_register_max17047()  argument
270 		return -ENODEV;  in cht_int33fe_register_max17047()
274 		/* Pre-existing I²C client for the max17047, add device properties */  in cht_int33fe_register_max17047()
275 		set_secondary_fwnode(&max17047->dev, fwnode);  in cht_int33fe_register_max17047()
276 		/* And re-probe to get the new device properties applied */  in cht_int33fe_register_max17047()
277 		ret = device_reprobe(&max17047->dev);  in cht_int33fe_register_max17047()
287 	data->battery_fg = i2c_acpi_new_device(dev, 1, &board_info);  in cht_int33fe_register_max17047()
289 	return PTR_ERR_OR_ZERO(data->battery_fg);  in cht_int33fe_register_max17047()
298 		 * DMI decode dumps from linux-hardware.org only 116 have
316 	struct device *dev = &pdev->dev;  in cht_int33fe_typec_probe()
317 	struct cht_int33fe_data *data;  in cht_int33fe_typec_probe()  local
324 		return -ENODEV;  in cht_int33fe_typec_probe()
326 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);  in cht_int33fe_typec_probe()
327 	if (!data)  in cht_int33fe_typec_probe()
328 		return -ENOMEM;  in cht_int33fe_typec_probe()
331 	 * We expect the WC PMIC to be paired with a TI bq24292i charger-IC.  in cht_int33fe_typec_probe()
334 	 *    max-snk voltage to 12V with another charger-IC is not good.  in cht_int33fe_typec_probe()
336 	 *    regulator-map, which is part of the bq24292i regulator_init_data,  in cht_int33fe_typec_probe()
338 	 *    it will end up with a dummy-regulator.  in cht_int33fe_typec_probe()
340 	 * which is defined in i2c-cht-wc.c from where the bq24292i I²C client  in cht_int33fe_typec_probe()
342 	 * don't end up getting a dummy-regulator ourselves.  in cht_int33fe_typec_probe()
347 		return (ret == -ENODEV) ? -EPROBE_DEFER : ret;  in cht_int33fe_typec_probe()
354 		if (fusb302_irq != -EPROBE_DEFER)  in cht_int33fe_typec_probe()
359 	ret = cht_int33fe_add_nodes(dev, data);  in cht_int33fe_typec_probe()
364 	ret = cht_int33fe_register_max17047(dev, data);  in cht_int33fe_typec_probe()
370 		ret = -ENODEV;  in cht_int33fe_typec_probe()
380 	data->fusb302 = i2c_acpi_new_device(dev, 2, &board_info);  in cht_int33fe_typec_probe()
381 	if (IS_ERR(data->fusb302)) {  in cht_int33fe_typec_probe()
382 		ret = PTR_ERR(data->fusb302);  in cht_int33fe_typec_probe()
388 		ret = -ENODEV;  in cht_int33fe_typec_probe()
397 	data->pi3usb30532 = i2c_acpi_new_device(dev, 3, &board_info);  in cht_int33fe_typec_probe()
398 	if (IS_ERR(data->pi3usb30532)) {  in cht_int33fe_typec_probe()
399 		ret = PTR_ERR(data->pi3usb30532);  in cht_int33fe_typec_probe()
403 	platform_set_drvdata(pdev, data);  in cht_int33fe_typec_probe()
408 	i2c_unregister_device(data->fusb302);  in cht_int33fe_typec_probe()
411 	i2c_unregister_device(data->battery_fg);  in cht_int33fe_typec_probe()
414 	cht_int33fe_remove_nodes(data);  in cht_int33fe_typec_probe()
421 	struct cht_int33fe_data *data = platform_get_drvdata(pdev);  in cht_int33fe_typec_remove()  local
423 	i2c_unregister_device(data->pi3usb30532);  in cht_int33fe_typec_remove()
424 	i2c_unregister_device(data->fusb302);  in cht_int33fe_typec_remove()
425 	i2c_unregister_device(data->battery_fg);  in cht_int33fe_typec_remove()
427 	cht_int33fe_remove_nodes(data);  in cht_int33fe_typec_remove()
437 		.name = "Intel Cherry Trail ACPI INT33FE Type-C driver",
446 MODULE_DESCRIPTION("Intel Cherry Trail ACPI INT33FE Type-C pseudo device driver");