148 static int sharp_memory_update_display(struct sharp_memory_device *smd,  in sharp_memory_update_display()  argument
155 	u32 pitch = smd->pitch;  in sharp_memory_update_display()
156 	u8 vcom = smd->vcom;  in sharp_memory_update_display()
157 	u8 *tx_buffer = smd->tx_buffer;  in sharp_memory_update_display()
158 	u32 tx_buffer_size = smd->tx_buffer_size;  in sharp_memory_update_display()
160 	mutex_lock(&smd->tx_mutex);  in sharp_memory_update_display()
168 	ret = sharp_memory_spi_write(smd->spi, tx_buffer, tx_buffer_size);  in sharp_memory_update_display()
170 	mutex_unlock(&smd->tx_mutex);  in sharp_memory_update_display()
175 static int sharp_memory_maintain_display(struct sharp_memory_device *smd)  in sharp_memory_maintain_display()  argument
178 	u8 vcom = smd->vcom;  in sharp_memory_maintain_display()
179 	u8 *tx_buffer = smd->tx_buffer;  in sharp_memory_maintain_display()
181 	mutex_lock(&smd->tx_mutex);  in sharp_memory_maintain_display()
185 	ret = sharp_memory_spi_write(smd->spi, tx_buffer, 2);  in sharp_memory_maintain_display()
187 	mutex_unlock(&smd->tx_mutex);  in sharp_memory_maintain_display()
192 static int sharp_memory_clear_display(struct sharp_memory_device *smd)  in sharp_memory_clear_display()  argument
195 	u8 vcom = smd->vcom;  in sharp_memory_clear_display()
196 	u8 *tx_buffer = smd->tx_buffer;  in sharp_memory_clear_display()
198 	mutex_lock(&smd->tx_mutex);  in sharp_memory_clear_display()
202 	ret = sharp_memory_spi_write(smd->spi, tx_buffer, 2);  in sharp_memory_clear_display()
204 	mutex_unlock(&smd->tx_mutex);  in sharp_memory_clear_display()
214 	struct sharp_memory_device *smd = drm_to_sharp_memory_device(fb->dev);  in sharp_memory_fb_dirty()  local
222 	sharp_memory_update_display(smd, fb, vmap, clip, fmtconv_state);  in sharp_memory_fb_dirty()
229 	struct sharp_memory_device *smd;  in sharp_memory_plane_atomic_check()  local
232 	smd = container_of(plane, struct sharp_memory_device, plane);  in sharp_memory_plane_atomic_check()
233 	crtc_state = drm_atomic_get_new_crtc_state(state, &smd->crtc);  in sharp_memory_plane_atomic_check()
247 	struct sharp_memory_device *smd;  in sharp_memory_plane_atomic_update()  local
250 	smd = container_of(plane, struct sharp_memory_device, plane);  in sharp_memory_plane_atomic_update()
251 	if (!smd->crtc.state->active)  in sharp_memory_plane_atomic_update()
284 	struct sharp_memory_device *smd = drm_to_sharp_memory_device(crtc->dev);  in sharp_memory_crtc_mode_valid()  local
286 	return drm_crtc_helper_mode_valid_fixed(crtc, mode, smd->mode);  in sharp_memory_crtc_mode_valid()
308 	struct sharp_memory_device *smd = data;  in sharp_memory_sw_vcom_signal_thread()  local
311 		smd->vcom ^= 1; /* Toggle vcom */  in sharp_memory_sw_vcom_signal_thread()
312 		sharp_memory_maintain_display(smd);  in sharp_memory_sw_vcom_signal_thread()
322 	struct sharp_memory_device *smd = drm_to_sharp_memory_device(crtc->dev);  in sharp_memory_crtc_enable()  local
324 	sharp_memory_clear_display(smd);  in sharp_memory_crtc_enable()
326 	if (smd->enable_gpio)  in sharp_memory_crtc_enable()
327 		gpiod_set_value(smd->enable_gpio, 1);  in sharp_memory_crtc_enable()
333 	struct sharp_memory_device *smd = drm_to_sharp_memory_device(crtc->dev);  in sharp_memory_crtc_disable()  local
335 	sharp_memory_clear_display(smd);  in sharp_memory_crtc_disable()
337 	if (smd->enable_gpio)  in sharp_memory_crtc_disable()
338 		gpiod_set_value(smd->enable_gpio, 0);  in sharp_memory_crtc_disable()
363 	struct sharp_memory_device *smd = drm_to_sharp_memory_device(connector->dev);  in sharp_memory_connector_get_modes()  local
365 	return drm_connector_helper_get_modes_fixed(connector, smd->mode);  in sharp_memory_connector_get_modes()
458 				  struct sharp_memory_device *smd,  in sharp_memory_pipe_init()  argument
463 	struct drm_encoder *encoder = &smd->encoder;  in sharp_memory_pipe_init()
464 	struct drm_plane *plane = &smd->plane;  in sharp_memory_pipe_init()
465 	struct drm_crtc *crtc = &smd->crtc;  in sharp_memory_pipe_init()
466 	struct drm_connector *connector = &smd->connector;  in sharp_memory_pipe_init()
489 	ret = drm_connector_init(&smd->drm, &smd->connector,  in sharp_memory_pipe_init()
495 	drm_connector_helper_add(&smd->connector,  in sharp_memory_pipe_init()
501 static int sharp_memory_init_pwm_vcom_signal(struct sharp_memory_device *smd)  in sharp_memory_init_pwm_vcom_signal()  argument
504 	struct device *dev = &smd->spi->dev;  in sharp_memory_init_pwm_vcom_signal()
507 	smd->pwm_vcom_signal = devm_pwm_get(dev, NULL);  in sharp_memory_init_pwm_vcom_signal()
508 	if (IS_ERR(smd->pwm_vcom_signal))  in sharp_memory_init_pwm_vcom_signal()
509 		return dev_err_probe(dev, PTR_ERR(smd->pwm_vcom_signal),  in sharp_memory_init_pwm_vcom_signal()
512 	pwm_init_state(smd->pwm_vcom_signal, &pwm_state);  in sharp_memory_init_pwm_vcom_signal()
515 	ret = pwm_apply_might_sleep(smd->pwm_vcom_signal, &pwm_state);  in sharp_memory_init_pwm_vcom_signal()
526 	struct sharp_memory_device *smd;  in sharp_memory_probe()  local
542 	smd = devm_drm_dev_alloc(dev, &sharp_memory_drm_driver,  in sharp_memory_probe()
544 	if (IS_ERR(smd))  in sharp_memory_probe()
545 		return PTR_ERR(smd);  in sharp_memory_probe()
547 	spi_set_drvdata(spi, smd);  in sharp_memory_probe()
549 	smd->spi = spi;  in sharp_memory_probe()
550 	drm = &smd->drm;  in sharp_memory_probe()
555 	smd->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_HIGH);  in sharp_memory_probe()
556 	if (!smd->enable_gpio)  in sharp_memory_probe()
560 	smd->mode = spi_get_device_match_data(spi);  in sharp_memory_probe()
562 	smd->pitch = (SHARP_ADDR_PERIOD + smd->mode->hdisplay + SHARP_DUMMY_PERIOD) / 8;  in sharp_memory_probe()
563 	smd->tx_buffer_size = (SHARP_MODE_PERIOD +  in sharp_memory_probe()
564 			       (SHARP_ADDR_PERIOD + (smd->mode->hdisplay) + SHARP_DUMMY_PERIOD) *  in sharp_memory_probe()
565 			       smd->mode->vdisplay) / 8;  in sharp_memory_probe()
567 	smd->tx_buffer = devm_kzalloc(dev, smd->tx_buffer_size, GFP_KERNEL);  in sharp_memory_probe()
568 	if (!smd->tx_buffer)  in sharp_memory_probe()
571 	mutex_init(&smd->tx_mutex);  in sharp_memory_probe()
596 		smd->vcom_mode = SHARP_MEMORY_SOFTWARE_VCOM;  in sharp_memory_probe()
597 		smd->sw_vcom_signal = kthread_run(sharp_memory_sw_vcom_signal_thread,  in sharp_memory_probe()
598 						  smd, "sw_vcom_signal");  in sharp_memory_probe()
601 		smd->vcom_mode = SHARP_MEMORY_EXTERNAL_VCOM;  in sharp_memory_probe()
604 		smd->vcom_mode = SHARP_MEMORY_PWM_VCOM;  in sharp_memory_probe()
605 		ret = sharp_memory_init_pwm_vcom_signal(smd);  in sharp_memory_probe()
612 	drm->mode_config.min_width = smd->mode->hdisplay;  in sharp_memory_probe()
613 	drm->mode_config.max_width = smd->mode->hdisplay;  in sharp_memory_probe()
614 	drm->mode_config.min_height = smd->mode->vdisplay;  in sharp_memory_probe()
615 	drm->mode_config.max_height = smd->mode->vdisplay;  in sharp_memory_probe()
617 	ret = sharp_memory_pipe_init(drm, smd, sharp_memory_formats,  in sharp_memory_probe()
623 	drm_plane_enable_fb_damage_clips(&smd->plane);  in sharp_memory_probe()
637 	struct sharp_memory_device *smd = spi_get_drvdata(spi);  in sharp_memory_remove()  local
639 	drm_dev_unplug(&smd->drm);  in sharp_memory_remove()
640 	drm_atomic_helper_shutdown(&smd->drm);  in sharp_memory_remove()
642 	switch (smd->vcom_mode) {  in sharp_memory_remove()
644 		kthread_stop(smd->sw_vcom_signal);  in sharp_memory_remove()
651 		pwm_disable(smd->pwm_vcom_signal);  in sharp_memory_remove()