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| author | Rafał Miłecki <zajec5@gmail.com> | 2011-04-27 17:39:48 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-04-28 14:53:22 -0400 |
| commit | 5890a3ca34aae94dd736557ad8cb898ac2802aa0 (patch) | |
| tree | ff230ba6d9a1fa2d9ee24c573d005976677a0ffd /drivers | |
| parent | 6e914101d47c76e09b0568d094ef44257dd3d6e9 (diff) | |
| download | lwn-5890a3ca34aae94dd736557ad8cb898ac2802aa0.tar.gz lwn-5890a3ca34aae94dd736557ad8cb898ac2802aa0.zip | |
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')
| -rw-r--r-- | drivers/ssb/driver_pcicore.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/ssb/driver_pcicore.c b/drivers/ssb/driver_pcicore.c index adde4f060fd8..32a9b61f008d 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) |