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| author | Arthur Borsboom <arthurborsboom@gmail.com> | 2014-03-15 22:12:18 +0100 |
|---|---|---|
| committer | Patrik Jakobsson <patrik.r.jakobsson@gmail.com> | 2014-03-17 20:14:10 +0100 |
| commit | 9083eb381c6d44ac244ed47ba1db087acd609fec (patch) | |
| tree | 50db8de218e27f2aed7170b680156fadeac10e6f /drivers/gpu/drm/gma500/psb_drv.c | |
| parent | f90cd811ae7a348a629a770acf975b14ea5f1329 (diff) | |
| download | linux-9083eb381c6d44ac244ed47ba1db087acd609fec.tar.bz2 | |
drm/gma500: Code cleanup - inline documentation
Improve readability by adding/changing inline documentation
Signed-off-by: Arthur Borsboom <arthurborsboom@gmail.com>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/gma500/psb_drv.c')
| -rw-r--r-- | drivers/gpu/drm/gma500/psb_drv.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c index 8113e447afaf..ba168ab1109b 100644 --- a/drivers/gpu/drm/gma500/psb_drv.c +++ b/drivers/gpu/drm/gma500/psb_drv.c @@ -39,11 +39,25 @@ static struct drm_driver driver; static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent); +/* + * The table below contains a mapping of the PCI vendor ID and the PCI Device ID + * to the different groups of PowerVR 5-series chip designs + * + * 0x8086 = Intel Corporation + * + * PowerVR SGX535 - Poulsbo - Intel GMA 500, Intel Atom Z5xx + * PowerVR SGX535 - Moorestown - Intel GMA 600 + * PowerVR SGX535 - Oaktrail - Intel GMA 600, Intel Atom Z6xx, E6xx + * PowerVR SGX540 - Medfield - Intel Atom Z2460 + * PowerVR SGX544MP2 - Medfield - + * PowerVR SGX545 - Cedartrail - Intel GMA 3600, Intel Atom D2500, N2600 + * PowerVR SGX545 - Cedartrail - Intel GMA 3650, Intel Atom D2550, D2700, + * N2800 + */ static DEFINE_PCI_DEVICE_TABLE(pciidlist) = { { 0x8086, 0x8108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops }, { 0x8086, 0x8109, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops }, #if defined(CONFIG_DRM_GMA600) - /* Atom E620 */ { 0x8086, 0x4100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, { 0x8086, 0x4101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, { 0x8086, 0x4102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, @@ -151,8 +165,7 @@ static int psb_driver_unload(struct drm_device *dev) { struct drm_psb_private *dev_priv = dev->dev_private; - /* Kill vblank etc here */ - + /* TODO: Kill vblank etc here */ if (dev_priv) { if (dev_priv->backlight_device) @@ -222,6 +235,7 @@ static int psb_driver_load(struct drm_device *dev, unsigned long flags) struct gma_encoder *gma_encoder; struct psb_gtt *pg; + /* allocating and initializing driver private data */ dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL); if (dev_priv == NULL) return -ENOMEM; @@ -321,6 +335,7 @@ static int psb_driver_load(struct drm_device *dev, unsigned long flags) acpi_video_register(); + /* Setup vertical blanking handling */ ret = drm_vblank_init(dev, dev_priv->num_pipe); if (ret) goto out_err; @@ -366,11 +381,11 @@ static int psb_driver_load(struct drm_device *dev, unsigned long flags) return ret; psb_intel_opregion_enable_asle(dev); #if 0 - /*enable runtime pm at last*/ + /* Enable runtime pm at last */ pm_runtime_enable(&dev->pdev->dev); pm_runtime_set_active(&dev->pdev->dev); #endif - /*Intel drm driver load is done, continue doing pvr load*/ + /* Intel drm driver load is done, continue doing pvr load */ return 0; out_err: psb_driver_unload(dev); |