diff options
| author | Mian Yousaf Kaukab <yousaf.kaukab@intel.com> | 2015-11-20 11:49:28 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-12-15 09:12:41 -0600 |
| commit | fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20 (patch) | |
| tree | 11c3c1a561b92a95b608e597052c1ae029aa6986 /drivers/usb/dwc2/core.c | |
| parent | 75f5c434c30b22a48a1d4a0f827473dc29036d78 (diff) | |
usb: dwc2: host: enable descriptor dma for fs devices
As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.
Ensure frame list and descriptor list are correctly freed during
disconnect.
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc2/core.c')
| -rw-r--r-- | drivers/usb/dwc2/core.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index ef73e498e98f..5568d9c8e213 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -2485,6 +2485,29 @@ void dwc2_set_param_dma_desc_enable(struct dwc2_hsotg *hsotg, int val) hsotg->core_params->dma_desc_enable = val; } +void dwc2_set_param_dma_desc_fs_enable(struct dwc2_hsotg *hsotg, int val) +{ + int valid = 1; + + if (val > 0 && (hsotg->core_params->dma_enable <= 0 || + !hsotg->hw_params.dma_desc_enable)) + valid = 0; + if (val < 0) + valid = 0; + + if (!valid) { + if (val >= 0) + dev_err(hsotg->dev, + "%d invalid for dma_desc_fs_enable parameter. Check HW configuration.\n", + val); + val = (hsotg->core_params->dma_enable > 0 && + hsotg->hw_params.dma_desc_enable); + } + + hsotg->core_params->dma_desc_fs_enable = val; + dev_dbg(hsotg->dev, "Setting dma_desc_fs_enable to %d\n", val); +} + void dwc2_set_param_host_support_fs_ls_low_power(struct dwc2_hsotg *hsotg, int val) { @@ -3016,6 +3039,7 @@ void dwc2_set_parameters(struct dwc2_hsotg *hsotg, dwc2_set_param_otg_cap(hsotg, params->otg_cap); dwc2_set_param_dma_enable(hsotg, params->dma_enable); dwc2_set_param_dma_desc_enable(hsotg, params->dma_desc_enable); + dwc2_set_param_dma_desc_fs_enable(hsotg, params->dma_desc_fs_enable); dwc2_set_param_host_support_fs_ls_low_power(hsotg, params->host_support_fs_ls_low_power); dwc2_set_param_enable_dynamic_fifo(hsotg, |