From: Sevak Arakelyan <sevaka@xxxxxxxxxxxx>
Add dwc2_check_param_tx_fifo_sizes function which validates
the members of g_tx_fifo_size array and sets to average or
default values if it is needed.
Cc: Stefan Wahren <stefan.wahren@xxxxxxxx>
Signed-off-by: Sevak Arakelyan <sevaka@xxxxxxxxxxxx>
Signed-off-by: John Youn <johnyoun@xxxxxxxxxxxx>
---
drivers/usb/dwc2/params.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index 016fff0cb887..2990c347289f 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -427,6 +427,40 @@ static void dwc2_check_param_phy_utmi_width(struct dwc2_hsotg *hsotg)
dwc2_set_param_phy_utmi_width(hsotg);
}
+static void dwc2_check_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg)
+{
+ int fifo_count;
+ int fifo;
+ int min;
+ u32 total = 0;
+ u32 dptxfszn;
+
+ fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
+ min = hsotg->hw_params.en_multiple_tx_fifo ? 16 : 4;
+
+ for (fifo = 1; fifo <= fifo_count; fifo++)
+ total += hsotg->params.g_tx_fifo_size[fifo];
+
+ if (total > dwc2_hsotg_tx_fifo_total_depth(hsotg) || !total) {
+ dev_warn(hsotg->dev, "%s: Invalid parameter g-tx-fifo-size, setting to default average\n",
+ __func__);
+ dwc2_set_param_tx_fifo_sizes(hsotg);
+ }
+
+ for (fifo = 1; fifo <= fifo_count; fifo++) {
+ dptxfszn = (dwc2_readl(hsotg->regs + DPTXFSIZN(fifo)) &
+ FIFOSIZE_DEPTH_MASK) >> FIFOSIZE_DEPTH_SHIFT;
+
+ if (hsotg->params.g_tx_fifo_size[fifo] < min ||
+ hsotg->params.g_tx_fifo_size[fifo] > dptxfszn) {
+ dev_warn(hsotg->dev, "%s: Invalid parameter g_tx_fifo_size[%d]=%d\n",
+ __func__, fifo,
+ hsotg->params.g_tx_fifo_size[fifo]);
+ hsotg->params.g_tx_fifo_size[fifo] = dptxfszn;
+ }
+ }
+}
+
#define CHECK_RANGE(_param, _min, _max, _def) do { \
if ((hsotg->params._param) < (_min) || \
(hsotg->params._param) > (_max)) { \
@@ -496,6 +530,7 @@ static void dwc2_check_params(struct dwc2_hsotg *hsotg)
CHECK_RANGE(g_np_tx_fifo_size,
16, hw->dev_nperio_tx_fifo_size,
hw->dev_nperio_tx_fifo_size);
+ dwc2_check_param_tx_fifo_sizes(hsotg);
}
}
--
2.11.0
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