| Message ID | 20241025131442.112862-12-peter.griffin@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | UFS cleanups and enhancements to ufs-exynos for gs101 | expand |
On 10/25/24 2:14 PM, Peter Griffin wrote: > Enable clock gating and hibern8 capabilities for gs101. This > leads to a significantly cooler phone when running the upstream > kernel. > > The exynos_ufs_post_hibern8() hook is also updated to remove the > UIC_CMD_DME_HIBER_EXIT code path as this causes a hang on gs101. > > The code path is removed rather than re-factored as no other SoC > in ufs-exynos driver sets UFSHCD_CAP_HIBERN8_WITH_CLK_GATING > capability. Additionally until the previous commit the hibern8 > callbacks were broken anyway as they expected a bool. I think too it's fine to remove uneeded code as it was broken anyway. > > Signed-off-by: Peter Griffin <peter.griffin@linaro.org> > --- > drivers/ufs/host/ufs-exynos.c | 24 ++++-------------------- > 1 file changed, 4 insertions(+), 20 deletions(-) > > diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c > index 3bbb71f7bae7..7c8195f27bb6 100644 > --- a/drivers/ufs/host/ufs-exynos.c > +++ b/drivers/ufs/host/ufs-exynos.c cut > @@ -1566,26 +1569,7 @@ static void exynos_ufs_post_hibern8(struct ufs_hba *hba, enum uic_cmd_dme cmd) > { cut > + if (cmd == UIC_CMD_DME_HIBER_ENTER) { I verified that the order of operations at hibern8_enter/exit() is sane: Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org> --- hibern8_notify() gets called in ufshcd_uic_hibern8_enter/exit() exynos_ufs_post_hibern8 disables the clocks for: ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER, POST_CHANGE) exynos_ufs_pre_hibern8() enables the clocks for: ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_EXIT, PRE_CHANGE);
diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c index 3bbb71f7bae7..7c8195f27bb6 100644 --- a/drivers/ufs/host/ufs-exynos.c +++ b/drivers/ufs/host/ufs-exynos.c @@ -229,6 +229,9 @@ static int gs101_ufs_drv_init(struct device *dev, struct exynos_ufs *ufs) /* Enable WriteBooster */ hba->caps |= UFSHCD_CAP_WB_EN; + /* Enable clock gating and hibern8 */ + hba->caps |= UFSHCD_CAP_CLK_GATING | UFSHCD_CAP_HIBERN8_WITH_CLK_GATING; + /* set ACG to be controlled by UFS_ACG_DISABLE */ reg = hci_readl(ufs, HCI_IOP_ACG_DISABLE); hci_writel(ufs, reg & (~HCI_IOP_ACG_DISABLE_EN), HCI_IOP_ACG_DISABLE); @@ -1566,26 +1569,7 @@ static void exynos_ufs_post_hibern8(struct ufs_hba *hba, enum uic_cmd_dme cmd) { struct exynos_ufs *ufs = ufshcd_get_variant(hba); - if (cmd == UIC_CMD_DME_HIBER_EXIT) { - u32 cur_mode = 0; - u32 pwrmode; - - if (ufshcd_is_hs_mode(&ufs->dev_req_params)) - pwrmode = FAST_MODE; - else - pwrmode = SLOW_MODE; - - ufshcd_dme_get(hba, UIC_ARG_MIB(PA_PWRMODE), &cur_mode); - if (cur_mode != (pwrmode << 4 | pwrmode)) { - dev_warn(hba->dev, "%s: power mode change\n", __func__); - hba->pwr_info.pwr_rx = (cur_mode >> 4) & 0xf; - hba->pwr_info.pwr_tx = cur_mode & 0xf; - ufshcd_config_pwr_mode(hba, &hba->max_pwr_info.info); - } - - if (!(ufs->opts & EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB)) - exynos_ufs_establish_connt(ufs); - } else if (cmd == UIC_CMD_DME_HIBER_ENTER) { + if (cmd == UIC_CMD_DME_HIBER_ENTER) { ufs->entry_hibern8_t = ktime_get(); exynos_ufs_gate_clks(ufs); if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL)
Enable clock gating and hibern8 capabilities for gs101. This leads to a significantly cooler phone when running the upstream kernel. The exynos_ufs_post_hibern8() hook is also updated to remove the UIC_CMD_DME_HIBER_EXIT code path as this causes a hang on gs101. The code path is removed rather than re-factored as no other SoC in ufs-exynos driver sets UFSHCD_CAP_HIBERN8_WITH_CLK_GATING capability. Additionally until the previous commit the hibern8 callbacks were broken anyway as they expected a bool. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> --- drivers/ufs/host/ufs-exynos.c | 24 ++++-------------------- 1 file changed, 4 insertions(+), 20 deletions(-)