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path: root/drivers/pci/controller/dwc/pcie-qcom-ep.c
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Diffstat (limited to 'drivers/pci/controller/dwc/pcie-qcom-ep.c')
-rw-r--r--drivers/pci/controller/dwc/pcie-qcom-ep.c31
1 files changed, 6 insertions, 25 deletions
diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c
index 9b62ee6992..9e58f05519 100644
--- a/drivers/pci/controller/dwc/pcie-qcom-ep.c
+++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c
@@ -23,6 +23,7 @@
#include <linux/reset.h>
#include <linux/module.h>
+#include "../../pci.h"
#include "pcie-designware.h"
/* PARF registers */
@@ -136,10 +137,8 @@
#define CORE_RESET_TIME_US_MAX 1005
#define WAKE_DELAY_US 2000 /* 2 ms */
-#define PCIE_GEN1_BW_MBPS 250
-#define PCIE_GEN2_BW_MBPS 500
-#define PCIE_GEN3_BW_MBPS 985
-#define PCIE_GEN4_BW_MBPS 1969
+#define QCOM_PCIE_LINK_SPEED_TO_BW(speed) \
+ Mbps_to_icc(PCIE_SPEED2MBS_ENC(pcie_link_speed[speed]))
#define to_pcie_ep(x) dev_get_drvdata((x)->dev)
@@ -282,7 +281,7 @@ static void qcom_pcie_dw_write_dbi2(struct dw_pcie *pci, void __iomem *base,
static void qcom_pcie_ep_icc_update(struct qcom_pcie_ep *pcie_ep)
{
struct dw_pcie *pci = &pcie_ep->pci;
- u32 offset, status, bw;
+ u32 offset, status;
int speed, width;
int ret;
@@ -295,25 +294,7 @@ static void qcom_pcie_ep_icc_update(struct qcom_pcie_ep *pcie_ep)
speed = FIELD_GET(PCI_EXP_LNKSTA_CLS, status);
width = FIELD_GET(PCI_EXP_LNKSTA_NLW, status);
- switch (speed) {
- case 1:
- bw = MBps_to_icc(PCIE_GEN1_BW_MBPS);
- break;
- case 2:
- bw = MBps_to_icc(PCIE_GEN2_BW_MBPS);
- break;
- case 3:
- bw = MBps_to_icc(PCIE_GEN3_BW_MBPS);
- break;
- default:
- dev_warn(pci->dev, "using default GEN4 bandwidth\n");
- fallthrough;
- case 4:
- bw = MBps_to_icc(PCIE_GEN4_BW_MBPS);
- break;
- }
-
- ret = icc_set_bw(pcie_ep->icc_mem, 0, width * bw);
+ ret = icc_set_bw(pcie_ep->icc_mem, 0, width * QCOM_PCIE_LINK_SPEED_TO_BW(speed));
if (ret)
dev_err(pci->dev, "failed to set interconnect bandwidth: %d\n",
ret);
@@ -351,7 +332,7 @@ static int qcom_pcie_enable_resources(struct qcom_pcie_ep *pcie_ep)
* Set an initial peak bandwidth corresponding to single-lane Gen 1
* for the pcie-mem path.
*/
- ret = icc_set_bw(pcie_ep->icc_mem, 0, MBps_to_icc(PCIE_GEN1_BW_MBPS));
+ ret = icc_set_bw(pcie_ep->icc_mem, 0, QCOM_PCIE_LINK_SPEED_TO_BW(1));
if (ret) {
dev_err(pci->dev, "failed to set interconnect bandwidth: %d\n",
ret);