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| author | Vardan Mikayelyan <mvardan@synopsys.com> | 2018-02-16 14:07:05 +0400 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2018-03-13 10:47:53 +0200 |
| commit | 631a23108c1a90b726ca99f1f90d48a91737f43d (patch) | |
| tree | 3df2b6540e9f176dc39e7039038ead534be0de2d /drivers/usb/dwc2/params.c | |
| parent | 41ba9b9b95beb8bb101a40c6badbbe49da6af9cd (diff) | |
| download | linux-stable-631a23108c1a90b726ca99f1f90d48a91737f43d.tar.gz linux-stable-631a23108c1a90b726ca99f1f90d48a91737f43d.tar.bz2 linux-stable-631a23108c1a90b726ca99f1f90d48a91737f43d.zip | |
usb: dwc2: Add hibernation field into dwc2_hw_params
Add parameter and it's initialization, needed for hibernation.
Reimplement dwc2_set_param_power_down() to support hibernation too.
Now 'power_down' parameter can be initialized with 0, 1 or 2.
0 - No
1 - Partial power down
2 - Hibernation
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc2/params.c')
| -rw-r--r-- | drivers/usb/dwc2/params.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index c64b1ad50712..daf0f9ac7149 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -469,6 +469,38 @@ static void dwc2_check_param_phy_utmi_width(struct dwc2_hsotg *hsotg) dwc2_set_param_phy_utmi_width(hsotg); } +static void dwc2_check_param_power_down(struct dwc2_hsotg *hsotg) +{ + int param = hsotg->params.power_down; + + switch (param) { + case DWC2_POWER_DOWN_PARAM_NONE: + break; + case DWC2_POWER_DOWN_PARAM_PARTIAL: + if (hsotg->hw_params.power_optimized) + break; + dev_dbg(hsotg->dev, + "Partial power down isn't supported by HW\n"); + param = DWC2_POWER_DOWN_PARAM_NONE; + break; + case DWC2_POWER_DOWN_PARAM_HIBERNATION: + if (hsotg->hw_params.hibernation) + break; + dev_dbg(hsotg->dev, + "Hibernation isn't supported by HW\n"); + param = DWC2_POWER_DOWN_PARAM_NONE; + break; + default: + dev_err(hsotg->dev, + "%s: Invalid parameter power_down=%d\n", + __func__, param); + param = DWC2_POWER_DOWN_PARAM_NONE; + break; + } + + hsotg->params.power_down = param; +} + static void dwc2_check_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg) { int fifo_count; @@ -529,6 +561,7 @@ static void dwc2_check_params(struct dwc2_hsotg *hsotg) dwc2_check_param_phy_type(hsotg); dwc2_check_param_speed(hsotg); dwc2_check_param_phy_utmi_width(hsotg); + dwc2_check_param_power_down(hsotg); CHECK_BOOL(enable_dynamic_fifo, hw->enable_dynamic_fifo); CHECK_BOOL(en_multiple_tx_fifo, hw->en_multiple_tx_fifo); CHECK_BOOL(i2c_enable, hw->i2c_enable); @@ -729,6 +762,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) GHWCFG4_NUM_IN_EPS_SHIFT; hw->dma_desc_enable = !!(hwcfg4 & GHWCFG4_DESC_DMA); hw->power_optimized = !!(hwcfg4 & GHWCFG4_POWER_OPTIMIZ); + hw->hibernation = !!(hwcfg4 & GHWCFG4_HIBER); hw->utmi_phy_data_width = (hwcfg4 & GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK) >> GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT; hw->acg_enable = !!(hwcfg4 & GHWCFG4_ACG_SUPPORTED); |