@@ -147,22 +147,6 @@
/* Total number of controllers */
#define CONTROLLERS_PER_LANE 5
-/* Protocol Type parameters */
-#define XPSGTR_TYPE_USB0 0 /* USB controller 0 */
-#define XPSGTR_TYPE_USB1 1 /* USB controller 1 */
-#define XPSGTR_TYPE_SATA_0 2 /* SATA controller lane 0 */
-#define XPSGTR_TYPE_SATA_1 3 /* SATA controller lane 1 */
-#define XPSGTR_TYPE_PCIE_0 4 /* PCIe controller lane 0 */
-#define XPSGTR_TYPE_PCIE_1 5 /* PCIe controller lane 1 */
-#define XPSGTR_TYPE_PCIE_2 6 /* PCIe controller lane 2 */
-#define XPSGTR_TYPE_PCIE_3 7 /* PCIe controller lane 3 */
-#define XPSGTR_TYPE_DP_0 8 /* Display Port controller lane 0 */
-#define XPSGTR_TYPE_DP_1 9 /* Display Port controller lane 1 */
-#define XPSGTR_TYPE_SGMII0 10 /* Ethernet SGMII controller 0 */
-#define XPSGTR_TYPE_SGMII1 11 /* Ethernet SGMII controller 1 */
-#define XPSGTR_TYPE_SGMII2 12 /* Ethernet SGMII controller 2 */
-#define XPSGTR_TYPE_SGMII3 13 /* Ethernet SGMII controller 3 */
-
/* Timeout values */
#define TIMEOUT_US 1000
@@ -185,7 +169,8 @@ struct xpsgtr_ssc {
/**
* struct xpsgtr_phy - representation of a lane
* @phy: pointer to the kernel PHY device
- * @type: controller which uses this lane
+ * @instance: instance of the protocol type (such as the lane within a
+ * protocol, or the USB/Ethernet controller)
* @lane: lane number
* @protocol: protocol in which the lane operates
* @skip_phy_init: skip phy_init() if true
@@ -194,7 +179,7 @@ struct xpsgtr_ssc {
*/
struct xpsgtr_phy {
struct phy *phy;
- u8 type;
+ u8 instance;
u8 lane;
u8 protocol;
bool skip_phy_init;
@@ -331,8 +316,8 @@ static int xpsgtr_wait_pll_lock(struct phy *phy)
if (ret == -ETIMEDOUT)
dev_err(gtr_dev->dev,
- "lane %u (type %u, protocol %u): PLL lock timeout\n",
- gtr_phy->lane, gtr_phy->type, gtr_phy->protocol);
+ "lane %u (protocol %u, instance %u): PLL lock timeout\n",
+ gtr_phy->lane, gtr_phy->protocol, gtr_phy->instance);
return ret;
}
@@ -645,8 +630,7 @@ static int xpsgtr_phy_power_on(struct phy *phy)
* cumulating waits for both lanes. The user is expected to initialize
* lane 0 last.
*/
- if (gtr_phy->protocol != ICM_PROTOCOL_DP ||
- gtr_phy->type == XPSGTR_TYPE_DP_0)
+ if (gtr_phy->protocol != ICM_PROTOCOL_DP || !gtr_phy->instance)
ret = xpsgtr_wait_pll_lock(phy);
return ret;
@@ -676,73 +660,33 @@ static const struct phy_ops xpsgtr_phyops = {
* OF Xlate Support
*/
-/* Set the lane type and protocol based on the PHY type and instance number. */
+/* Set the lane protocol and instance based on the PHY type and instance number. */
static int xpsgtr_set_lane_type(struct xpsgtr_phy *gtr_phy, u8 phy_type,
unsigned int phy_instance)
{
unsigned int num_phy_types;
- const int *phy_types;
switch (phy_type) {
- case PHY_TYPE_SATA: {
- static const int types[] = {
- XPSGTR_TYPE_SATA_0,
- XPSGTR_TYPE_SATA_1,
- };
-
- phy_types = types;
- num_phy_types = ARRAY_SIZE(types);
+ case PHY_TYPE_SATA:
+ num_phy_types = 2;
gtr_phy->protocol = ICM_PROTOCOL_SATA;
break;
- }
- case PHY_TYPE_USB3: {
- static const int types[] = {
- XPSGTR_TYPE_USB0,
- XPSGTR_TYPE_USB1,
- };
-
- phy_types = types;
- num_phy_types = ARRAY_SIZE(types);
+ case PHY_TYPE_USB3:
+ num_phy_types = 2;
gtr_phy->protocol = ICM_PROTOCOL_USB;
break;
- }
- case PHY_TYPE_DP: {
- static const int types[] = {
- XPSGTR_TYPE_DP_0,
- XPSGTR_TYPE_DP_1,
- };
-
- phy_types = types;
- num_phy_types = ARRAY_SIZE(types);
+ case PHY_TYPE_DP:
+ num_phy_types = 2;
gtr_phy->protocol = ICM_PROTOCOL_DP;
break;
- }
- case PHY_TYPE_PCIE: {
- static const int types[] = {
- XPSGTR_TYPE_PCIE_0,
- XPSGTR_TYPE_PCIE_1,
- XPSGTR_TYPE_PCIE_2,
- XPSGTR_TYPE_PCIE_3,
- };
-
- phy_types = types;
- num_phy_types = ARRAY_SIZE(types);
+ case PHY_TYPE_PCIE:
+ num_phy_types = 4;
gtr_phy->protocol = ICM_PROTOCOL_PCIE;
break;
- }
- case PHY_TYPE_SGMII: {
- static const int types[] = {
- XPSGTR_TYPE_SGMII0,
- XPSGTR_TYPE_SGMII1,
- XPSGTR_TYPE_SGMII2,
- XPSGTR_TYPE_SGMII3,
- };
-
- phy_types = types;
- num_phy_types = ARRAY_SIZE(types);
+ case PHY_TYPE_SGMII:
+ num_phy_types = 4;
gtr_phy->protocol = ICM_PROTOCOL_SGMII;
break;
- }
default:
return -EINVAL;
}
@@ -750,22 +694,25 @@ static int xpsgtr_set_lane_type(struct xpsgtr_phy *gtr_phy, u8 phy_type,
if (phy_instance >= num_phy_types)
return -EINVAL;
- gtr_phy->type = phy_types[phy_instance];
+ gtr_phy->instance = phy_instance;
return 0;
}
/*
- * Valid combinations of controllers and lanes (Interconnect Matrix).
+ * Valid combinations of controllers and lanes (Interconnect Matrix). Each
+ * "instance" represents one controller for a lane. For PCIe and DP, the
+ * "instance" is the logical lane in the link. For SATA, USB, and SGMII,
+ * the instance is the index of the controller.
+ *
+ * This information is only used to validate the devicetree reference, and is
+ * not used when programming the hardware.
*/
static const unsigned int icm_matrix[NUM_LANES][CONTROLLERS_PER_LANE] = {
- { XPSGTR_TYPE_PCIE_0, XPSGTR_TYPE_SATA_0, XPSGTR_TYPE_USB0,
- XPSGTR_TYPE_DP_1, XPSGTR_TYPE_SGMII0 },
- { XPSGTR_TYPE_PCIE_1, XPSGTR_TYPE_SATA_1, XPSGTR_TYPE_USB0,
- XPSGTR_TYPE_DP_0, XPSGTR_TYPE_SGMII1 },
- { XPSGTR_TYPE_PCIE_2, XPSGTR_TYPE_SATA_0, XPSGTR_TYPE_USB0,
- XPSGTR_TYPE_DP_1, XPSGTR_TYPE_SGMII2 },
- { XPSGTR_TYPE_PCIE_3, XPSGTR_TYPE_SATA_1, XPSGTR_TYPE_USB1,
- XPSGTR_TYPE_DP_0, XPSGTR_TYPE_SGMII3 }
+ /* PCIe, SATA, USB, DP, SGMII */
+ { 0, 0, 0, 1, 0 }, /* Lane 0 */
+ { 1, 1, 0, 0, 1 }, /* Lane 1 */
+ { 2, 0, 0, 1, 2 }, /* Lane 2 */
+ { 3, 1, 1, 0, 3 }, /* Lane 3 */
};
/* Translate OF phandle and args to PHY instance. */
@@ -820,7 +767,7 @@ static struct phy *xpsgtr_xlate(struct device *dev,
* is allowed to operate on the lane.
*/
for (i = 0; i < CONTROLLERS_PER_LANE; i++) {
- if (icm_matrix[phy_lane][i] == gtr_phy->type)
+ if (icm_matrix[phy_lane][i] == gtr_phy->instance)
return gtr_phy->phy;
}
The phy "type" is just the combination of protocol and instance, and is never used apart from that. Store the instance directly, instead of converting to a type first. No functional change intended. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> --- (no changes since v2) Changes in v2: - Expand the icm_matrix comment drivers/phy/xilinx/phy-zynqmp.c | 115 +++++++++----------------------- 1 file changed, 31 insertions(+), 84 deletions(-)