IMG_VOID DisableSGXClocks(SYS_DATA *psSysData)
{
#if !defined(NO_HARDWARE)
SYS_SPECIFIC_DATA *psSysSpecData = (SYS_SPECIFIC_DATA *) psSysData->pvSysSpecificData;
if (atomic_read(&psSysSpecData->sSGXClocksEnabled) == 0)
{
return;
}
PVR_DPF((PVR_DBG_MESSAGE, "DisableSGXClocks: Disabling SGX Clocks"));
SysDisableSGXInterrupts(psSysData);
#if defined(LDM_PLATFORM) && !defined(PVR_DRI_DRM_NOT_PCI)
{
int res = pm_runtime_put_sync(&gpsPVRLDMDev->dev);
if (res < 0)
{
PVR_DPF((PVR_DBG_ERROR, "DisableSGXClocks: pm_runtime_put_sync failed (%d)", -res));
}
}
omap_device_set_rate(&gpsPVRLDMDev->dev,
&gpsPVRLDMDev->dev, 0);
#endif
atomic_set(&psSysSpecData->sSGXClocksEnabled, 0);
#else
PVR_UNREFERENCED_PARAMETER(psSysData);
#endif
}
PVRSRV_ERROR EnableSGXClocks(SYS_DATA *psSysData)
{
#if !defined(NO_HARDWARE)
SYS_SPECIFIC_DATA *psSysSpecData = (SYS_SPECIFIC_DATA *) psSysData->pvSysSpecificData;
if (atomic_read(&psSysSpecData->sSGXClocksEnabled) != 0)
{
return PVRSRV_OK;
}
PVR_DPF((PVR_DBG_MESSAGE, "EnableSGXClocks: Enabling SGX Clocks"));
#if defined(LDM_PLATFORM) && !defined(PVR_DRI_DRM_NOT_PCI)
omap_device_set_rate(&gpsPVRLDMDev->dev,
&gpsPVRLDMDev->dev, SYS_SGX_OPP119_CLK_SPEED);
{
int res = pm_runtime_get_sync(&gpsPVRLDMDev->dev);
if (res < 0)
{
PVR_DPF((PVR_DBG_ERROR, "EnableSGXClocks: pm_runtime_get_sync failed (%d)", -res));
return PVRSRV_ERROR_UNABLE_TO_ENABLE_CLOCK;
}
}
#endif
SysEnableSGXInterrupts(psSysData);
atomic_set(&psSysSpecData->sSGXClocksEnabled, 1);
#else
PVR_UNREFERENCED_PARAMETER(psSysData);
#endif
return PVRSRV_OK;
}
/* HSI Platform Device probing & hsi_device registration */
static int __init hsi_platform_device_probe(struct platform_device *pd)
{
struct hsi_platform_data *pdata = pd->dev.platform_data;
struct hsi_dev *hsi_ctrl;
u32 revision;
int err;
dev_dbg(&pd->dev, "HSI DRIVER : hsi_platform_device_probe\n");
dev_dbg(&pd->dev, "The platform device probed is an %s\n",
hsi_driver_device_is_hsi(pd) ? "HSI" : "SSI");
if (!pdata) {
pr_err(LOG_NAME "No platform_data found on hsi device\n");
return -ENXIO;
}
hsi_ctrl = kzalloc(sizeof(*hsi_ctrl), GFP_KERNEL);
if (hsi_ctrl == NULL) {
dev_err(&pd->dev, "Could not allocate memory for"
" struct hsi_dev\n");
return -ENOMEM;
}
platform_set_drvdata(pd, hsi_ctrl);
err = hsi_controller_init(hsi_ctrl, pd);
if (err < 0) {
dev_err(&pd->dev, "Could not initialize hsi controller:"
" %d\n", err);
goto rollback1;
}
pm_runtime_enable(hsi_ctrl->dev);
hsi_clocks_enable(hsi_ctrl->dev, __func__);
/* Non critical SW Reset */
err = hsi_softreset(hsi_ctrl);
if (err < 0)
goto rollback2;
hsi_set_pm_default(hsi_ctrl);
/* Configure HSI ports */
hsi_set_ports_default(hsi_ctrl, pd);
/* Gather info from registers for the driver.(REVISION) */
revision = hsi_inl(hsi_ctrl->base, HSI_SYS_REVISION_REG);
if (hsi_driver_device_is_hsi(pd))
dev_info(hsi_ctrl->dev, "HSI Hardware REVISION 0x%x\n",
revision);
else
dev_info(hsi_ctrl->dev, "SSI Hardware REVISION %d.%d\n",
(revision & HSI_SSI_REV_MAJOR) >> 4,
(revision & HSI_SSI_REV_MINOR));
err = hsi_debug_add_ctrl(hsi_ctrl);
if (err < 0) {
dev_err(&pd->dev,
"Could not add hsi controller to debugfs: %d\n", err);
goto rollback2;
}
err = register_hsi_devices(hsi_ctrl);
if (err < 0) {
dev_err(&pd->dev, "Could not register hsi_devices: %d\n", err);
goto rollback3;
}
/* From here no need for HSI HW access */
hsi_clocks_disable(hsi_ctrl->dev, __func__);
/* Allow HSI to wake up the platform */
device_init_wakeup(hsi_ctrl->dev, 1);
/* Set the HSI FCLK to default. */
err = omap_device_set_rate(hsi_ctrl->dev, hsi_ctrl->dev,
pdata->default_hsi_fclk);
if (err)
dev_err(&pd->dev, "Cannot set HSI FClk to default value: %ld\n",
pdata->default_hsi_fclk);
return err;
rollback3:
hsi_debug_remove_ctrl(hsi_ctrl);
rollback2:
hsi_controller_exit(hsi_ctrl);
/* From here no need for HSI HW access */
hsi_clocks_disable(hsi_ctrl->dev, __func__);
rollback1:
kfree(hsi_ctrl);
return err;
}
