aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/ssb
diff options
context:
space:
mode:
authorRafał Miłecki <zajec5@gmail.com>2011-04-27 17:39:48 +0200
committerJohn W. Linville <linville@tuxdriver.com>2011-04-28 14:53:22 -0400
commit5890a3ca34aae94dd736557ad8cb898ac2802aa0 (patch)
treeff230ba6d9a1fa2d9ee24c573d005976677a0ffd /drivers/ssb
parent6e914101d47c76e09b0568d094ef44257dd3d6e9 (diff)
downloadkernel_samsung_smdk4412-5890a3ca34aae94dd736557ad8cb898ac2802aa0.zip
kernel_samsung_smdk4412-5890a3ca34aae94dd736557ad8cb898ac2802aa0.tar.gz
kernel_samsung_smdk4412-5890a3ca34aae94dd736557ad8cb898ac2802aa0.tar.bz2
ssb: pci: update PCIe workarounds
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/ssb')
-rw-r--r--drivers/ssb/driver_pcicore.c35
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/ssb/driver_pcicore.c b/drivers/ssb/driver_pcicore.c
index adde4f0..32a9b61 100644
--- a/drivers/ssb/driver_pcicore.c
+++ b/drivers/ssb/driver_pcicore.c
@@ -460,16 +460,23 @@ static void ssb_pcicore_pci_setup_workarounds(struct ssb_pcicore *pc)
static void ssb_pcicore_pcie_setup_workarounds(struct ssb_pcicore *pc)
{
- struct ssb_device *pdev = pc->dev;
u32 tmp;
+ u8 rev = pc->dev->id.revision;
- if ((pdev->id.revision == 0) || (pdev->id.revision == 1)) {
+ if (rev == 0 || rev == 1) {
/* TLP Workaround register. */
tmp = ssb_pcie_read(pc, 0x4);
tmp |= 0x8;
ssb_pcie_write(pc, 0x4, tmp);
}
- if (pdev->id.revision == 0) {
+ if (rev == 1) {
+ /* DLLP Link Control register. */
+ tmp = ssb_pcie_read(pc, 0x100);
+ tmp |= 0x40;
+ ssb_pcie_write(pc, 0x100, tmp);
+ }
+
+ if (rev == 0) {
const u8 serdes_rx_device = 0x1F;
ssb_pcie_mdio_write(pc, serdes_rx_device,
@@ -478,11 +485,20 @@ static void ssb_pcicore_pcie_setup_workarounds(struct ssb_pcicore *pc)
6 /* CDR */, 0x0100);
ssb_pcie_mdio_write(pc, serdes_rx_device,
7 /* CDR BW */, 0x1466);
- } else if (pdev->id.revision == 1) {
- /* DLLP Link Control register. */
- tmp = ssb_pcie_read(pc, 0x100);
- tmp |= 0x40;
- ssb_pcie_write(pc, 0x100, tmp);
+ } else if (rev == 3 || rev == 4 || rev == 5) {
+ /* TODO: DLLP Power Management Threshold */
+ ssb_pcicore_serdes_workaround(pc);
+ /* TODO: ASPM */
+ } else if (rev == 7) {
+ /* TODO: No PLL down */
+ }
+
+ if (rev >= 6) {
+ /* Miscellaneous Configuration Fixup */
+ tmp = pcicore_read16(pc, SSB_PCICORE_SPROM(5));
+ if (!(tmp & 0x8000))
+ pcicore_write16(pc, SSB_PCICORE_SPROM(5),
+ tmp | 0x8000);
}
}
@@ -513,7 +529,10 @@ void ssb_pcicore_init(struct ssb_pcicore *pc)
if (!pc->hostmode)
ssb_pcicore_init_clientmode(pc);
+ /* Additional always once-executed workarounds */
ssb_pcicore_serdes_workaround(pc);
+ /* TODO: ASPM */
+ /* TODO: Clock Request Update */
}
static u32 ssb_pcie_read(struct ssb_pcicore *pc, u32 address)