There's no reason to delay initialization of most of the driver (such as mapping memory I/O or enabling runtime PM) to the component bind handler. Perform as much of the initialization as possible at probe time, initializing at bind time only the parts that depends on the DSS. The cleanup code is moved from unbind to remove in a similar way.
Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/gpu/drm/omapdrm/dss/venc.c | 104 +++++++++++++++++++++---------------- 1 file changed, 60 insertions(+), 44 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c index c8fb91bb1ad3..84069e79ca6a 100644 --- a/drivers/gpu/drm/omapdrm/dss/venc.c +++ b/drivers/gpu/drm/omapdrm/dss/venc.c @@ -756,6 +756,50 @@ static const struct omap_dss_device_ops venc_ops = { .set_timings = venc_set_timings, };
+/* ----------------------------------------------------------------------------- + * Component Bind & Unbind + */ + +static int venc_bind(struct device *dev, struct device *master, void *data) +{ + struct dss_device *dss = dss_get_device(master); + struct venc_device *venc = dev_get_drvdata(dev); + u8 rev_id; + int r; + + venc->dss = dss; + + r = venc_runtime_get(venc); + if (r) + return r; + + rev_id = (u8)(venc_read_reg(venc, VENC_REV_ID) & 0xff); + dev_dbg(dev, "OMAP VENC rev %d\n", rev_id); + + venc_runtime_put(venc); + + venc->debugfs = dss_debugfs_create_file(dss, "venc", venc_dump_regs, + venc); + + return 0; +} + +static void venc_unbind(struct device *dev, struct device *master, void *data) +{ + struct venc_device *venc = dev_get_drvdata(dev); + + dss_debugfs_remove_file(venc->debugfs); +} + +static const struct component_ops venc_component_ops = { + .bind = venc_bind, + .unbind = venc_unbind, +}; + +/* ----------------------------------------------------------------------------- + * Probe & Remove, Suspend & Resume + */ + static void venc_init_output(struct venc_device *venc) { struct omap_dss_device *out = &venc->output; @@ -820,19 +864,15 @@ static int venc_probe_of(struct venc_device *venc) return r; }
-/* VENC HW IP initialisation */ static const struct soc_device_attribute venc_soc_devices[] = { { .machine = "OMAP3[45]*" }, { .machine = "AM35*" }, { /* sentinel */ } };
-static int venc_bind(struct device *dev, struct device *master, void *data) +static int venc_probe(struct platform_device *pdev) { - struct platform_device *pdev = to_platform_device(dev); - struct dss_device *dss = dss_get_device(master); struct venc_device *venc; - u8 rev_id; struct resource *venc_mem; int r;
@@ -841,8 +881,8 @@ static int venc_bind(struct device *dev, struct device *master, void *data) return -ENOMEM;
venc->pdev = pdev; - venc->dss = dss; - dev_set_drvdata(dev, venc); + + platform_set_drvdata(pdev, venc);
/* The OMAP34xx, OMAP35xx and AM35xx VENC require the TV DAC clock. */ if (soc_device_match(venc_soc_devices)) @@ -863,63 +903,39 @@ static int venc_bind(struct device *dev, struct device *master, void *data) if (r) goto err_free;
- pm_runtime_enable(&pdev->dev); - - r = venc_runtime_get(venc); - if (r) - goto err_pm_disable; - - rev_id = (u8)(venc_read_reg(venc, VENC_REV_ID) & 0xff); - dev_dbg(&pdev->dev, "OMAP VENC rev %d\n", rev_id); - - venc_runtime_put(venc); - r = venc_probe_of(venc); - if (r) { - DSSERR("Invalid DT data\n"); - goto err_pm_disable; - } + if (r) + goto err_free;
- venc->debugfs = dss_debugfs_create_file(dss, "venc", venc_dump_regs, - venc); + pm_runtime_enable(&pdev->dev);
venc_init_output(venc);
+ r = component_add(&pdev->dev, &venc_component_ops); + if (r) + goto err_uninit_output; + return 0;
-err_pm_disable: +err_uninit_output: + venc_uninit_output(venc); pm_runtime_disable(&pdev->dev); err_free: kfree(venc); return r; }
-static void venc_unbind(struct device *dev, struct device *master, void *data) +static int venc_remove(struct platform_device *pdev) { - struct venc_device *venc = dev_get_drvdata(dev); + struct venc_device *venc = platform_get_drvdata(pdev);
- dss_debugfs_remove_file(venc->debugfs); + component_del(&pdev->dev, &venc_component_ops);
venc_uninit_output(venc);
- pm_runtime_disable(dev); + pm_runtime_disable(&pdev->dev);
kfree(venc); -} - -static const struct component_ops venc_component_ops = { - .bind = venc_bind, - .unbind = venc_unbind, -}; - -static int venc_probe(struct platform_device *pdev) -{ - return component_add(&pdev->dev, &venc_component_ops); -} - -static int venc_remove(struct platform_device *pdev) -{ - component_del(&pdev->dev, &venc_component_ops); return 0; }