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drm/gma500: Add support for aux pci vdc device 

Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
This commit is contained in:
Patrik Jakobsson 2013-09-16 18:02:40 +02:00
parent cf8efd3afe
commit 2657929d4e
2 changed files with 51 additions and 2 deletions
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32
drivers/gpu/drm/gma500/psb_drv.c
View File

@ -251,6 +251,12 @@ static int psb_driver_unload(struct drm_device *dev)
iounmap(dev_priv->sgx_reg);
dev_priv->sgx_reg = NULL;
}
if (dev_priv->aux_reg) {
iounmap(dev_priv->aux_reg);
dev_priv->aux_reg = NULL;
}
if (dev_priv->aux_pdev)
pci_dev_put(dev_priv->aux_pdev);
/* Destroy VBT data */
psb_intel_destroy_bios(dev);
@ -266,7 +272,7 @@ static int psb_driver_unload(struct drm_device *dev)
static int psb_driver_load(struct drm_device *dev, unsigned long chipset)
{
struct drm_psb_private *dev_priv;
unsigned long resource_start;
unsigned long resource_start, resource_len;
unsigned long irqflags;
int ret = -ENOMEM;
struct drm_connector *connector;
@ -296,6 +302,30 @@ static int psb_driver_load(struct drm_device *dev, unsigned long chipset)
if (!dev_priv->sgx_reg)
goto out_err;
if (IS_MRST(dev)) {
dev_priv->aux_pdev = pci_get_bus_and_slot(0, PCI_DEVFN(3, 0));
if (dev_priv->aux_pdev) {
resource_start = pci_resource_start(dev_priv->aux_pdev,
PSB_AUX_RESOURCE);
resource_len = pci_resource_len(dev_priv->aux_pdev,
PSB_AUX_RESOURCE);
dev_priv->aux_reg = ioremap_nocache(resource_start,
resource_len);
if (!dev_priv->aux_reg)
goto out_err;
DRM_DEBUG_KMS("Found aux vdc");
} else {
/* Couldn't find the aux vdc so map to primary vdc */
dev_priv->aux_reg = dev_priv->vdc_reg;
DRM_DEBUG_KMS("Couldn't find aux pci device");
}
dev_priv->gmbus_reg = dev_priv->aux_reg;
} else {
dev_priv->gmbus_reg = dev_priv->vdc_reg;
}
psb_intel_opregion_setup(dev);
ret = dev_priv->ops->chip_setup(dev);

21
drivers/gpu/drm/gma500/psb_drv.h
View File

@ -75,6 +75,7 @@ enum {
* PCI resource identifiers
*/
#define PSB_MMIO_RESOURCE 0
#define PSB_AUX_RESOURCE 0
#define PSB_GATT_RESOURCE 2
#define PSB_GTT_RESOURCE 3
/*
@ -455,6 +456,7 @@ struct psb_ops;
struct drm_psb_private {
struct drm_device *dev;
struct pci_dev *aux_pdev; /* Currently only used by mrst */
const struct psb_ops *ops;
const struct psb_offset *regmap;
@ -486,6 +488,7 @@ struct drm_psb_private {
uint8_t __iomem *sgx_reg;
uint8_t __iomem *vdc_reg;
uint8_t __iomem *aux_reg; /* Auxillary vdc pipe regs */
uint32_t gatt_free_offset;
/*
@ -532,6 +535,7 @@ struct drm_psb_private {
/* gmbus */
struct intel_gmbus *gmbus;
uint8_t __iomem *gmbus_reg;
/* Used by SDVO */
int crt_ddc_pin;
@ -928,16 +932,31 @@ static inline uint32_t REGISTER_READ(struct drm_device *dev, uint32_t reg)
return ioread32(dev_priv->vdc_reg + reg);
}
static inline uint32_t REGISTER_READ_AUX(struct drm_device *dev, uint32_t reg)
{
struct drm_psb_private *dev_priv = dev->dev_private;
return ioread32(dev_priv->aux_reg + reg);
}
#define REG_READ(reg) REGISTER_READ(dev, (reg))
#define REG_READ_AUX(reg) REGISTER_READ_AUX(dev, (reg))
static inline void REGISTER_WRITE(struct drm_device *dev, uint32_t reg,
uint32_t val)
uint32_t val)
{
struct drm_psb_private *dev_priv = dev->dev_private;
iowrite32((val), dev_priv->vdc_reg + (reg));
}
static inline void REGISTER_WRITE_AUX(struct drm_device *dev, uint32_t reg,
uint32_t val)
{
struct drm_psb_private *dev_priv = dev->dev_private;
iowrite32((val), dev_priv->aux_reg + (reg));
}
#define REG_WRITE(reg, val) REGISTER_WRITE(dev, (reg), (val))
#define REG_WRITE_AUX(reg, val) REGISTER_WRITE_AUX(dev, (reg), (val))
static inline void REGISTER_WRITE16(struct drm_device *dev,
uint32_t reg, uint32_t val)