static int s5p_cec_remove(struct platform_device *pdev)
{
struct s5p_cec_dev *cec = platform_get_drvdata(pdev);
cec_unregister_adapter(cec->adap);
cec_notifier_put(cec->notifier);
pm_runtime_disable(&pdev->dev);
return 0;
}
static int tegra_cec_remove(struct platform_device *pdev)
{
struct tegra_cec *cec = platform_get_drvdata(pdev);
clk_disable_unprepare(cec->clk);
cec_unregister_adapter(cec->adap);
cec_notifier_put(cec->notifier);
return 0;
}
static int meson_ao_cec_remove(struct platform_device *pdev)
{
struct meson_ao_cec_device *ao_cec = platform_get_drvdata(pdev);
clk_disable_unprepare(ao_cec->core);
cec_unregister_adapter(ao_cec->adap);
cec_notifier_put(ao_cec->notify);
return 0;
}
static int cros_ec_cec_remove(struct platform_device *pdev)
{
struct cros_ec_cec *cros_ec_cec = platform_get_drvdata(pdev);
struct device *dev = &pdev->dev;
int ret;
ret = blocking_notifier_chain_unregister(
&cros_ec_cec->cros_ec->event_notifier,
&cros_ec_cec->notifier);
if (ret) {
dev_err(dev, "failed to unregister notifier\n");
return ret;
}
cec_unregister_adapter(cros_ec_cec->adap);
if (cros_ec_cec->notify)
cec_notifier_put(cros_ec_cec->notify);
return 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;
}
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;
}