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authorGabor Juhos <juhosg@openwrt.org>2010-06-08 20:18:42 +0000
committerGabor Juhos <juhosg@openwrt.org>2010-06-08 20:18:42 +0000
commita7301c57a4fc20a783e481ec2f8523da118acc45 (patch)
tree6dd8d1e4c2b01de8b8d47b4a29cfe391f56f8468 /target/linux/generic-2.6/files
parentd577cfa397c08d961c5fa5e3faef1ea8cd7a53b7 (diff)
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ip17xx: New chip detection
Clean up get_model() and make it recognize IP175D using yet another chip ID register. Log the detected model. Also fix a bug in the interface between the PHY layer and our probe function, which caused IP175A devices to be ignored. Signed-off-by: Martin Mares <mj@ucw.cz> Signed-off-by: Patrick Horn <patrick.horn@gmail.com> SVN-Revision: 21719
Diffstat (limited to 'target/linux/generic-2.6/files')
-rw-r--r--target/linux/generic-2.6/files/drivers/net/phy/ip175c.c58
1 files changed, 30 insertions, 28 deletions
diff --git a/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c b/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c
index 706c973..ede5d51 100644
--- a/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c
+++ b/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c
@@ -25,6 +25,7 @@
#include <linux/phy.h>
#include <linux/delay.h>
#include <linux/switch.h>
+#include <linux/device.h>
#define MAX_VLANS 16
#define MAX_PORTS 9
@@ -378,41 +379,41 @@ static int setPhy(struct ip175c_state *state, reg mii, u16 value)
static int get_model(struct ip175c_state *state)
{
- reg oui_id_reg = {0, 2};
- int oui_id;
- reg model_no_reg = {0, 3};
- int model_no, model_no_orig;
-
- // 175 and 178 have the same oui ID.
- reg oui_id_reg_178c = {5, 2}; // returns error on IP175C.
- int is_178c = 0;
-
- oui_id = getPhy(state, oui_id_reg);
- if (oui_id != 0x0243) {
- // non
- return -ENODEV; // Not a IC+ chip.
- }
- oui_id = getPhy(state, oui_id_reg_178c);
- if (oui_id == 0x0243) {
- is_178c = 1;
- }
+ int id1, id2;
+ int oui_id, model_no, rev_no, chip_no;
+
+ id1 = ip_phy_read(state, 0, 2);
+ id2 = ip_phy_read(state, 0, 3);
+ oui_id = (id1 << 6) | ((id2 >> 10) & 0x3f);
+ model_no = (id2 >> 4) & 0x3f;
+ rev_no = id2 & 0xf;
+ pr_debug("IP175C: Identified oui=%06x model=%02x rev=%X\n", oui_id, model_no, rev_no);
- model_no_orig = getPhy(state, model_no_reg);
- if (model_no_orig < 0) {
+ if (oui_id != 0x0090c3) // No other oui_id should have reached us anyway
return -ENODEV;
- }
- model_no = model_no_orig >> 4; // shift out revision number.
- model_no &= 0x3f; // only take the model number (low 6 bits).
+
if (model_no == IP175A.MODEL_NO) {
state->regs = &IP175A;
} else if (model_no == IP175C.MODEL_NO) {
- if (is_178c) {
+ /*
+ * Several models share the same model_no:
+ * 178C has more PHYs, so we try whether the device responds to a read from PHY5
+ * 175D has a new chip ID register
+ * 175C has neither
+ */
+ if (ip_phy_read(state, 5, 2) == 0x0243) {
state->regs = &IP178C;
} else {
- state->regs = &IP175C;
+ chip_no = ip_phy_read(state, 20, 0);
+ pr_debug("IP175C: Chip ID register reads %04x\n", chip_no);
+ if (chip_no == 0x175d) {
+ state->regs = &IP175C;
+ } else {
+ state->regs = &IP175C;
+ }
}
} else {
- printk(KERN_WARNING "ip175c: Found an unknown IC+ switch with model number %02Xh.\n", model_no_orig);
+ pr_warning("IP175C: Found an unknown IC+ switch with model number %02x, revision %X.\n", model_no, rev_no);
return -EPERM;
}
return 0;
@@ -1321,6 +1322,7 @@ static int ip175c_probe(struct phy_device *pdev)
dev->ports = state->regs->NUM_PORTS;
dev->name = state->regs->NAME;
+ pr_info("IP175C: Found %s at %s\n", dev->name, dev_name(&pdev->dev));
return 0;
error:
@@ -1371,8 +1373,8 @@ static int ip175c_read_status(struct phy_device *pdev)
static struct phy_driver ip175c_driver = {
.name = "IC+ IP175C",
- .phy_id = 0x02430d80,
- .phy_id_mask = 0x0ffffff0,
+ .phy_id = 0x02430c00,
+ .phy_id_mask = 0x0ffffc00,
.features = PHY_BASIC_FEATURES,
.probe = ip175c_probe,
.remove = ip175c_remove,