Example #1
0
static int stih_cec_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct resource *res;
	struct stih_cec *cec;
	int ret;

	cec = devm_kzalloc(dev, sizeof(*cec), GFP_KERNEL);
	if (!cec)
		return -ENOMEM;

	cec->dev = dev;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	cec->regs = devm_ioremap_resource(dev, res);
	if (IS_ERR(cec->regs))
		return PTR_ERR(cec->regs);

	cec->irq = platform_get_irq(pdev, 0);
	if (cec->irq < 0)
		return cec->irq;

	ret = devm_request_threaded_irq(dev, cec->irq, stih_cec_irq_handler,
					stih_cec_irq_handler_thread, 0,
					pdev->name, cec);
	if (ret)
		return ret;

	cec->clk = devm_clk_get(dev, "cec-clk");
	if (IS_ERR(cec->clk)) {
		dev_err(dev, "Cannot get cec clock\n");
		return PTR_ERR(cec->clk);
	}

	cec->adap = cec_allocate_adapter(&sti_cec_adap_ops, cec,
			CEC_NAME,
			CEC_CAP_LOG_ADDRS | CEC_CAP_PASSTHROUGH |
			CEC_CAP_PHYS_ADDR | CEC_CAP_TRANSMIT,
			1, &pdev->dev);
	ret = PTR_ERR_OR_ZERO(cec->adap);
	if (ret)
		return ret;

	ret = cec_register_adapter(cec->adap);
	if (ret) {
		cec_delete_adapter(cec->adap);
		return ret;
	}

	platform_set_drvdata(pdev, cec);
	return 0;
}
Example #2
0
struct cec_adapter *vivid_cec_alloc_adap(struct vivid_dev *dev,
        unsigned int idx,
        bool is_source)
{
    char name[sizeof(dev->vid_out_dev.name) + 2];
    u32 caps = CEC_CAP_TRANSMIT | CEC_CAP_LOG_ADDRS |
               CEC_CAP_PASSTHROUGH | CEC_CAP_RC | CEC_CAP_MONITOR_ALL;

    snprintf(name, sizeof(name), "%s%d",
             is_source ? dev->vid_out_dev.name : dev->vid_cap_dev.name,
             idx);
    return cec_allocate_adapter(&vivid_cec_adap_ops, dev,
                                name, caps, 1);
}
Example #3
0
static int cros_ec_cec_probe(struct platform_device *pdev)
{
	struct cros_ec_dev *ec_dev = dev_get_drvdata(pdev->dev.parent);
	struct cros_ec_device *cros_ec = ec_dev->ec_dev;
	struct cros_ec_cec *cros_ec_cec;
	int ret;

	cros_ec_cec = devm_kzalloc(&pdev->dev, sizeof(*cros_ec_cec),
				   GFP_KERNEL);
	if (!cros_ec_cec)
		return -ENOMEM;

	platform_set_drvdata(pdev, cros_ec_cec);
	cros_ec_cec->cros_ec = cros_ec;

	ret = cros_ec_cec_get_notifier(&pdev->dev, &cros_ec_cec->notify);
	if (ret)
		return ret;

	ret = device_init_wakeup(&pdev->dev, 1);
	if (ret) {
		dev_err(&pdev->dev, "failed to initialize wakeup\n");
		return ret;
	}

	cros_ec_cec->adap = cec_allocate_adapter(&cros_ec_cec_ops, cros_ec_cec,
						 DRV_NAME, CEC_CAP_DEFAULTS, 1);
	if (IS_ERR(cros_ec_cec->adap))
		return PTR_ERR(cros_ec_cec->adap);

	/* Get CEC events from the EC. */
	cros_ec_cec->notifier.notifier_call = cros_ec_cec_event;
	ret = blocking_notifier_chain_register(&cros_ec->event_notifier,
					       &cros_ec_cec->notifier);
	if (ret) {
		dev_err(&pdev->dev, "failed to register notifier\n");
		cec_delete_adapter(cros_ec_cec->adap);
		return ret;
	}

	ret = cec_register_adapter(cros_ec_cec->adap, &pdev->dev);
	if (ret < 0) {
		cec_delete_adapter(cros_ec_cec->adap);
		return ret;
	}

	cec_register_cec_notifier(cros_ec_cec->adap, cros_ec_cec->notify);

	return 0;
}
Example #4
0
static int rain_connect(struct serio *serio, struct serio_driver *drv)
{
	u32 caps = CEC_CAP_DEFAULTS | CEC_CAP_PHYS_ADDR | CEC_CAP_MONITOR_ALL;
	struct rain *rain;
	int err = -ENOMEM;
	struct cec_log_addrs log_addrs = {};
	u16 pa = CEC_PHYS_ADDR_INVALID;

	rain = kzalloc(sizeof(*rain), GFP_KERNEL);

	if (!rain)
		return -ENOMEM;

	rain->serio = serio;
	rain->adap = cec_allocate_adapter(&rain_cec_adap_ops, rain,
					  dev_name(&serio->dev), caps, 1);
	err = PTR_ERR_OR_ZERO(rain->adap);
	if (err < 0)
		goto free_device;

	rain->dev = &serio->dev;
	serio_set_drvdata(serio, rain);
	INIT_WORK(&rain->work, rain_irq_work_handler);
	mutex_init(&rain->write_lock);
	spin_lock_init(&rain->buf_lock);

	err = serio_open(serio, drv);
	if (err)
		goto delete_adap;

	err = rain_setup(rain, serio, &log_addrs, &pa);
	if (err)
		goto close_serio;

	err = cec_register_adapter(rain->adap, &serio->dev);
	if (err < 0)
		goto close_serio;

	rain->dev = &rain->adap->devnode.dev;
	return 0;

close_serio:
	serio_close(serio);
delete_adap:
	cec_delete_adapter(rain->adap);
	serio_set_drvdata(serio, NULL);
free_device:
	kfree(rain);
	return err;
}
Example #5
0
/*
 * A new EDID is set. If there is no CEC adapter, then create one. If
 * there was a CEC adapter, then check if the CEC adapter properties
 * were unchanged and just update the CEC physical address. Otherwise
 * unregister the old CEC adapter and create a new one.
 */
void drm_dp_cec_set_edid(struct drm_dp_aux *aux, const struct edid *edid)
{
	u32 cec_caps = CEC_CAP_DEFAULTS | CEC_CAP_NEEDS_HPD;
	unsigned int num_las = 1;
	u8 cap;

	/* No transfer function was set, so not a DP connector */
	if (!aux->transfer)
		return;

#ifndef CONFIG_MEDIA_CEC_RC
	/*
	 * CEC_CAP_RC is part of CEC_CAP_DEFAULTS, but it is stripped by
	 * cec_allocate_adapter() if CONFIG_MEDIA_CEC_RC is undefined.
	 *
	 * Do this here as well to ensure the tests against cec_caps are
	 * correct.
	 */
	cec_caps &= ~CEC_CAP_RC;
#endif
	cancel_delayed_work_sync(&aux->cec.unregister_work);

	mutex_lock(&aux->cec.lock);
	if (!drm_dp_cec_cap(aux, &cap)) {
		/* CEC is not supported, unregister any existing adapter */
		cec_unregister_adapter(aux->cec.adap);
		aux->cec.adap = NULL;
		goto unlock;
	}

	if (cap & DP_CEC_SNOOPING_CAPABLE)
		cec_caps |= CEC_CAP_MONITOR_ALL;
	if (cap & DP_CEC_MULTIPLE_LA_CAPABLE)
		num_las = CEC_MAX_LOG_ADDRS;

	if (aux->cec.adap) {
		if (aux->cec.adap->capabilities == cec_caps &&
		    aux->cec.adap->available_log_addrs == num_las) {
			/* Unchanged, so just set the phys addr */
			cec_s_phys_addr_from_edid(aux->cec.adap, edid);
			goto unlock;
		}
		/*
		 * The capabilities changed, so unregister the old
		 * adapter first.
		 */
		cec_unregister_adapter(aux->cec.adap);
	}

	/* Create a new adapter */
	aux->cec.adap = cec_allocate_adapter(&drm_dp_cec_adap_ops,
					     aux, aux->cec.name, cec_caps,
					     num_las);
	if (IS_ERR(aux->cec.adap)) {
		aux->cec.adap = NULL;
		goto unlock;
	}
	if (cec_register_adapter(aux->cec.adap, aux->cec.parent)) {
		cec_delete_adapter(aux->cec.adap);
		aux->cec.adap = NULL;
	} else {
		/*
		 * Update the phys addr for the new CEC adapter. When called
		 * from drm_dp_cec_register_connector() edid == NULL, so in
		 * that case the phys addr is just invalidated.
		 */
		cec_s_phys_addr_from_edid(aux->cec.adap, edid);
	}
unlock:
	mutex_unlock(&aux->cec.lock);
}
Example #6
0
static int meson_ao_cec_probe(struct platform_device *pdev)
{
	struct meson_ao_cec_device *ao_cec;
	struct device *hdmi_dev;
	struct resource *res;
	int ret, irq;

	hdmi_dev = cec_notifier_parse_hdmi_phandle(&pdev->dev);

	if (IS_ERR(hdmi_dev))
		return PTR_ERR(hdmi_dev);

	ao_cec = devm_kzalloc(&pdev->dev, sizeof(*ao_cec), GFP_KERNEL);
	if (!ao_cec)
		return -ENOMEM;

	spin_lock_init(&ao_cec->cec_reg_lock);

	ao_cec->notify = cec_notifier_get(hdmi_dev);
	if (!ao_cec->notify)
		return -ENOMEM;

	ao_cec->adap = cec_allocate_adapter(&meson_ao_cec_ops, ao_cec,
					    "meson_ao_cec",
					    CEC_CAP_LOG_ADDRS |
					    CEC_CAP_TRANSMIT |
					    CEC_CAP_RC |
					    CEC_CAP_PASSTHROUGH,
					    1); /* Use 1 for now */
	if (IS_ERR(ao_cec->adap)) {
		ret = PTR_ERR(ao_cec->adap);
		goto out_probe_notify;
	}

	ao_cec->adap->owner = THIS_MODULE;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	ao_cec->base = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(ao_cec->base)) {
		ret = PTR_ERR(ao_cec->base);
		goto out_probe_adapter;
	}

	irq = platform_get_irq(pdev, 0);
	ret = devm_request_threaded_irq(&pdev->dev, irq,
					meson_ao_cec_irq,
					meson_ao_cec_irq_thread,
					0, NULL, ao_cec);
	if (ret) {
		dev_err(&pdev->dev, "irq request failed\n");
		goto out_probe_adapter;
	}

	ao_cec->core = devm_clk_get(&pdev->dev, "core");
	if (IS_ERR(ao_cec->core)) {
		dev_err(&pdev->dev, "core clock request failed\n");
		ret = PTR_ERR(ao_cec->core);
		goto out_probe_adapter;
	}

	ret = clk_prepare_enable(ao_cec->core);
	if (ret) {
		dev_err(&pdev->dev, "core clock enable failed\n");
		goto out_probe_adapter;
	}

	ret = clk_set_rate(ao_cec->core, CEC_CLK_RATE);
	if (ret) {
		dev_err(&pdev->dev, "core clock set rate failed\n");
		goto out_probe_clk;
	}

	device_reset_optional(&pdev->dev);

	ao_cec->pdev = pdev;
	platform_set_drvdata(pdev, ao_cec);

	ret = cec_register_adapter(ao_cec->adap, &pdev->dev);
	if (ret < 0) {
		cec_notifier_put(ao_cec->notify);
		goto out_probe_clk;
	}

	/* Setup Hardware */
	writel_relaxed(CEC_GEN_CNTL_RESET,
		       ao_cec->base + CEC_GEN_CNTL_REG);

	cec_register_cec_notifier(ao_cec->adap, ao_cec->notify);

	return 0;

out_probe_clk:
	clk_disable_unprepare(ao_cec->core);

out_probe_adapter:
	cec_delete_adapter(ao_cec->adap);

out_probe_notify:
	cec_notifier_put(ao_cec->notify);

	dev_err(&pdev->dev, "CEC controller registration failed\n");

	return ret;
}
Example #7
0
static int tegra_cec_probe(struct platform_device *pdev)
{
	struct platform_device *hdmi_dev;
	struct device_node *np;
	struct tegra_cec *cec;
	struct resource *res;
	int ret = 0;

	np = of_parse_phandle(pdev->dev.of_node, "hdmi-phandle", 0);

	if (!np) {
		dev_err(&pdev->dev, "Failed to find hdmi node in device tree\n");
		return -ENODEV;
	}
	hdmi_dev = of_find_device_by_node(np);
	if (hdmi_dev == NULL)
		return -EPROBE_DEFER;

	cec = devm_kzalloc(&pdev->dev, sizeof(struct tegra_cec), GFP_KERNEL);

	if (!cec)
		return -ENOMEM;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res) {
		dev_err(&pdev->dev,
			"Unable to allocate resources for device\n");
		return -EBUSY;
	}

	if (!devm_request_mem_region(&pdev->dev, res->start, resource_size(res),
		pdev->name)) {
		dev_err(&pdev->dev,
			"Unable to request mem region for device\n");
		return -EBUSY;
	}

	cec->tegra_cec_irq = platform_get_irq(pdev, 0);

	if (cec->tegra_cec_irq <= 0)
		return -EBUSY;

	cec->cec_base = devm_ioremap_nocache(&pdev->dev, res->start,
					     resource_size(res));

	if (!cec->cec_base) {
		dev_err(&pdev->dev, "Unable to grab IOs for device\n");
		return -EBUSY;
	}

	cec->clk = devm_clk_get(&pdev->dev, "cec");

	if (IS_ERR_OR_NULL(cec->clk)) {
		dev_err(&pdev->dev, "Can't get clock for CEC\n");
		return -ENOENT;
	}

	clk_prepare_enable(cec->clk);

	/* set context info. */
	cec->dev = &pdev->dev;

	platform_set_drvdata(pdev, cec);

	ret = devm_request_threaded_irq(&pdev->dev, cec->tegra_cec_irq,
		tegra_cec_irq_handler, tegra_cec_irq_thread_handler,
		0, "cec_irq", &pdev->dev);

	if (ret) {
		dev_err(&pdev->dev,
			"Unable to request interrupt for device\n");
		goto clk_error;
	}

	cec->notifier = cec_notifier_get(&hdmi_dev->dev);
	if (!cec->notifier) {
		ret = -ENOMEM;
		goto clk_error;
	}

	cec->adap = cec_allocate_adapter(&tegra_cec_ops, cec, TEGRA_CEC_NAME,
			CEC_CAP_DEFAULTS | CEC_CAP_MONITOR_ALL,
			CEC_MAX_LOG_ADDRS);
	if (IS_ERR(cec->adap)) {
		ret = -ENOMEM;
		dev_err(&pdev->dev, "Couldn't create cec adapter\n");
		goto cec_error;
	}
	ret = cec_register_adapter(cec->adap, &pdev->dev);
	if (ret) {
		dev_err(&pdev->dev, "Couldn't register device\n");
		goto cec_error;
	}

	cec_register_cec_notifier(cec->adap, cec->notifier);

	return 0;

cec_error:
	if (cec->notifier)
		cec_notifier_put(cec->notifier);
	cec_delete_adapter(cec->adap);
clk_error:
	clk_disable_unprepare(cec->clk);
	return ret;
}
Example #8
0
static int s5p_cec_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct device_node *np;
	struct platform_device *hdmi_dev;
	struct resource *res;
	struct s5p_cec_dev *cec;
	int ret;

	np = of_parse_phandle(pdev->dev.of_node, "hdmi-phandle", 0);

	if (!np) {
		dev_err(&pdev->dev, "Failed to find hdmi node in device tree\n");
		return -ENODEV;
	}
	hdmi_dev = of_find_device_by_node(np);
	if (hdmi_dev == NULL)
		return -EPROBE_DEFER;

	cec = devm_kzalloc(&pdev->dev, sizeof(*cec), GFP_KERNEL);
	if (!cec)
		return -ENOMEM;

	cec->dev = dev;

	cec->irq = platform_get_irq(pdev, 0);
	if (cec->irq < 0)
		return cec->irq;

	ret = devm_request_threaded_irq(dev, cec->irq, s5p_cec_irq_handler,
		s5p_cec_irq_handler_thread, 0, pdev->name, cec);
	if (ret)
		return ret;

	cec->clk = devm_clk_get(dev, "hdmicec");
	if (IS_ERR(cec->clk))
		return PTR_ERR(cec->clk);

	cec->pmu = syscon_regmap_lookup_by_phandle(dev->of_node,
						 "samsung,syscon-phandle");
	if (IS_ERR(cec->pmu))
		return -EPROBE_DEFER;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	cec->reg = devm_ioremap_resource(dev, res);
	if (IS_ERR(cec->reg))
		return PTR_ERR(cec->reg);

	cec->notifier = cec_notifier_get(&hdmi_dev->dev);
	if (cec->notifier == NULL)
		return -ENOMEM;

	cec->adap = cec_allocate_adapter(&s5p_cec_adap_ops, cec,
		CEC_NAME,
		CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT |
		CEC_CAP_PASSTHROUGH | CEC_CAP_RC, 1);
	ret = PTR_ERR_OR_ZERO(cec->adap);
	if (ret)
		return ret;

	ret = cec_register_adapter(cec->adap, &pdev->dev);
	if (ret)
		goto err_delete_adapter;

	cec_register_cec_notifier(cec->adap, cec->notifier);

	platform_set_drvdata(pdev, cec);
	pm_runtime_enable(dev);

	dev_dbg(dev, "successfuly probed\n");
	return 0;

err_delete_adapter:
	cec_delete_adapter(cec->adap);
	return ret;
}