From: Amit Nischal Date: Mon, 30 Apr 2018 16:20:09 +0000 (+0530) Subject: clk: qcom: Add support for BRANCH_HALT_SKIP flag for branch clocks X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7d99ced8f4c65267836db69ec0790e878ef11b3b;p=linux.git clk: qcom: Add support for BRANCH_HALT_SKIP flag for branch clocks There could be few clocks where the clock status bit is not required to be polled as the clock on/off would be controlled by enabling/disabling external source. Add support for the same by introducing new flag named as 'BRANCH_HALT_SKIP'. Signed-off-by: Amit Nischal [sboyd@kernel.org: Rename flag to BRANCH_HALT_SKIP] Signed-off-by: Stephen Boyd --- diff --git a/drivers/clk/qcom/clk-branch.c b/drivers/clk/qcom/clk-branch.c index 26f7af315066f..c58c5538b1b64 100644 --- a/drivers/clk/qcom/clk-branch.c +++ b/drivers/clk/qcom/clk-branch.c @@ -77,8 +77,11 @@ static int clk_branch_wait(const struct clk_branch *br, bool enabling, bool voted = br->halt_check & BRANCH_VOTED; const char *name = clk_hw_get_name(&br->clkr.hw); - /* Skip checking halt bit if the clock is in hardware gated mode */ - if (clk_branch_in_hwcg_mode(br)) + /* + * Skip checking halt bit if we're explicitly ignoring the bit or the + * clock is in hardware gated mode + */ + if (br->halt_check == BRANCH_HALT_SKIP || clk_branch_in_hwcg_mode(br)) return 0; if (br->halt_check == BRANCH_HALT_DELAY || (!enabling && voted)) { diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h index 284df3f3c55f7..1702efb1c5117 100644 --- a/drivers/clk/qcom/clk-branch.h +++ b/drivers/clk/qcom/clk-branch.h @@ -42,6 +42,7 @@ struct clk_branch { #define BRANCH_HALT_ENABLE 1 /* pol: 0 = halt */ #define BRANCH_HALT_ENABLE_VOTED (BRANCH_HALT_ENABLE | BRANCH_VOTED) #define BRANCH_HALT_DELAY 2 /* No bit to check; just delay */ +#define BRANCH_HALT_SKIP 3 /* Don't check halt bit */ struct clk_regmap clkr; };