diff options
| author | Venkat Gopalakrishnan <venkatg@codeaurora.org> | 2015-05-29 17:56:59 -0700 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-31 15:26:31 -0700 |
| commit | 6761d88e7ca29809794434fdf08fe7101ac3e617 (patch) | |
| tree | 01961a4a9e63acae6d4769b2b1ca5895ccf4da86 | |
| parent | 11bb322287709984f829ca51e65a929cd8fb7f9c (diff) | |
mmc: sdhci-msm: do not disable test-bus
There is a hardware ring-buffer that logs the commands
sent and doorbells rung. This is helpful for debugging
in case of errors. This requires that the testbus be
enabled. Hence don't disable testbus.
Change-Id: I9c2fa984740aa9a0f8135d2196be6b3639ec22d1
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
| -rw-r--r-- | drivers/mmc/host/sdhci-msm.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index c5c2881556a7..dbcada1583bb 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -2732,9 +2732,6 @@ void sdhci_msm_dump_vendor_regs(struct sdhci_host *host) pr_info(" Test bus[%d to %d]: 0x%08x 0x%08x 0x%08x 0x%08x\n", i, i + 3, debug_reg[i], debug_reg[i+1], debug_reg[i+2], debug_reg[i+3]); - /* Disable test bus */ - writel_relaxed(~CORE_TESTBUS_ENA, msm_host->core_mem + - CORE_TESTBUS_CONFIG); if (host->is_crypto_en) { sdhci_msm_ice_get_status(host, &sts); pr_info("%s: ICE status %x\n", mmc_hostname(host->mmc), sts); @@ -2753,6 +2750,22 @@ void sdhci_msm_reset(struct sdhci_host *host, u8 mask) sdhci_reset(host, mask); } +static void sdhci_msm_clear_set_dumpregs(struct sdhci_host *host, bool set) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_msm_host *msm_host = pltfm_host->priv; + + if (set) { + writel_relaxed(CORE_TESTBUS_ENA, + msm_host->core_mem + CORE_TESTBUS_CONFIG); + } else { + u32 value; + value = readl_relaxed(msm_host->core_mem + CORE_TESTBUS_CONFIG); + value &= ~CORE_TESTBUS_ENA; + writel_relaxed(value, msm_host->core_mem + CORE_TESTBUS_CONFIG); + } +} + static struct sdhci_ops sdhci_msm_ops = { .crypto_engine_cfg = sdhci_msm_ice_cfg, .crypto_engine_reset = sdhci_msm_ice_reset, @@ -2769,6 +2782,7 @@ static struct sdhci_ops sdhci_msm_ops = { .enable_controller_clock = sdhci_msm_enable_controller_clock, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_msm_reset, + .clear_set_dumpregs = sdhci_msm_clear_set_dumpregs, }; static void sdhci_set_default_hw_caps(struct sdhci_msm_host *msm_host, |