misc/mei/platform-vsc.c

24 #include "mei_dev.h"
78 static int mei_vsc_fw_status(struct mei_device *mei_dev,
89 static inline enum mei_pg_state mei_vsc_pg_state(struct mei_device *mei_dev)
94 static void mei_vsc_intr_enable(struct mei_device *mei_dev)
96 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
101 static void mei_vsc_intr_disable(struct mei_device *mei_dev)
103 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
109 static void mei_vsc_intr_clear(struct mei_device *mei_dev)
114 static void mei_vsc_synchronize_irq(struct mei_device *mei_dev)
116 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
121 static int mei_vsc_hw_config(struct mei_device *mei_dev)
126 static bool mei_vsc_host_is_ready(struct mei_device *mei_dev)
128 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
133 static bool mei_vsc_hw_is_ready(struct mei_device *mei_dev)
135 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
140 static int mei_vsc_hw_start(struct mei_device *mei_dev)
142 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
155 		dev_err(mei_dev->dev, "wait fw ready failed: %d\n", ret);
164 static bool mei_vsc_hbuf_is_ready(struct mei_device *mei_dev)
166 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
171 static int mei_vsc_hbuf_empty_slots(struct mei_device *mei_dev)
176 static u32 mei_vsc_hbuf_depth(const struct mei_device *mei_dev)
181 static int mei_vsc_write(struct mei_device *mei_dev,
185 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
207 static inline u32 mei_vsc_read(const struct mei_device *mei_dev)
209 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
222 static int mei_vsc_count_full_read_slots(struct mei_device *mei_dev)
227 static int mei_vsc_read_slots(struct mei_device *mei_dev, unsigned char *buf,
230 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
242 static bool mei_vsc_pg_in_transition(struct mei_device *mei_dev)
244 	return mei_dev->pg_event >= MEI_PG_EVENT_WAIT &&
245 	       mei_dev->pg_event <= MEI_PG_EVENT_INTR_WAIT;
248 static bool mei_vsc_pg_is_enabled(struct mei_device *mei_dev)
253 static int mei_vsc_hw_reset(struct mei_device *mei_dev, bool intr_enable)
255 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
262 	return vsc_tp_init(hw->tp, mei_dev->dev);
295 	struct mei_device *mei_dev = context;
296 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
301 	if (mei_dev->dev_state == MEI_DEV_RESETTING ||
302 	    mei_dev->dev_state == MEI_DEV_INITIALIZING)
307 	guard(mutex)(&mei_dev->device_lock);
311 		slots = mei_count_full_read_slots(mei_dev);
313 		ret = mei_irq_read_handler(mei_dev, &cmpl_list, &slots);
316 				if (mei_dev->dev_state != MEI_DEV_RESETTING &&
317 				    mei_dev->dev_state != MEI_DEV_POWER_DOWN)
318 					schedule_work(&mei_dev->reset_work);
325 	mei_dev->hbuf_is_ready = mei_hbuf_is_ready(mei_dev);
326 	ret = mei_irq_write_handler(mei_dev, &cmpl_list);
328 		dev_err(mei_dev->dev, "dispatch write request failed: %d\n", ret);
330 	mei_dev->hbuf_is_ready = mei_hbuf_is_ready(mei_dev);
331 	mei_irq_compl_handler(mei_dev, &cmpl_list);
337 	struct mei_device *mei_dev;
346 	mei_dev = devm_kzalloc(dev, size_add(sizeof(*mei_dev), sizeof(*hw)),
348 	if (!mei_dev)
351 	mei_device_init(mei_dev, dev, false, &mei_vsc_hw_ops);
352 	mei_dev->fw_f_fw_ver_supported = 0;
353 	mei_dev->kind = "ivsc";
355 	hw = mei_dev_to_vsc_hw(mei_dev);
359 	platform_set_drvdata(pdev, mei_dev);
361 	vsc_tp_register_event_cb(tp, mei_vsc_event_cb, mei_dev);
363 	ret = mei_start(mei_dev);
369 	ret = mei_register(mei_dev, dev);
373 	pm_runtime_enable(mei_dev->dev);
378 	mei_stop(mei_dev);
381 	mei_cancel_work(mei_dev);
385 	mei_disable_interrupts(mei_dev);
392 	struct mei_device *mei_dev = platform_get_drvdata(pdev);
393 	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
395 	pm_runtime_disable(mei_dev->dev);
397 	mei_stop(mei_dev);
401 	mei_disable_interrupts(mei_dev);
403 	mei_deregister(mei_dev);
408 	struct mei_device *mei_dev;
411 	mei_dev = dev_get_drvdata(dev);
412 	if (!mei_dev)
415 	mutex_lock(&mei_dev->device_lock);
417 	if (!mei_write_is_idle(mei_dev))
420 	mutex_unlock(&mei_dev->device_lock);
427 	struct mei_device *mei_dev;
429 	mei_dev = dev_get_drvdata(dev);
430 	if (!mei_dev)