From: Jerome Brunet <jbrunet@baylibre.com> To: Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@codeaurora.org>, Kevin Hilman <khilman@baylibre.com> Cc: Jerome Brunet <jbrunet@baylibre.com>, linux-clk@vger.kernel.org, linux-amlogic@lists.infradead.org, Linus Walleij <linus.walleij@linaro.org>, Boris Brezillon <boris.brezillon@free-electrons.com> Subject: [PATCH v2 10/11] clk: fix CLK_SET_RATE_GATE with clock rate protection Date: Sun, 21 May 2017 23:59:57 +0200 [thread overview] Message-ID: <20170521215958.19743-11-jbrunet@baylibre.com> (raw) In-Reply-To: <20170521215958.19743-1-jbrunet@baylibre.com> Using clock rate protection, we can now enforce CLK_SET_RATE_GATE along the clock tree Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> --- drivers/clk/clk.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 01306191133c..6ee5fc59cf1f 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -491,6 +491,9 @@ static void clk_core_unprepare(struct clk_core *core) if (WARN_ON(core->prepare_count == 1 && core->flags & CLK_IS_CRITICAL)) return; + if (core->flags & CLK_SET_RATE_GATE) + clk_core_rate_unprotect(core); + if (--core->prepare_count > 0) return; @@ -561,6 +564,14 @@ static int clk_core_prepare(struct clk_core *core) core->prepare_count++; + /* + * CLK_SET_RATE_GATE is a special case of clock protection + * Instead of a consumer protection, the provider is protecting + * itself when prepared + */ + if (core->flags & CLK_SET_RATE_GATE) + clk_core_rate_protect(core); + return 0; } @@ -1738,9 +1749,6 @@ static int clk_core_set_rate_nolock(struct clk_core *core, if (clk_core_rate_is_protected(core)) return -EBUSY; - if ((core->flags & CLK_SET_RATE_GATE) && core->prepare_count) - return -EBUSY; - /* calculate new rates and get the topmost changed clock */ top = clk_calc_new_rates(core, req_rate); if (!top) -- 2.9.4
WARNING: multiple messages have this Message-ID (diff)
From: jbrunet@baylibre.com (Jerome Brunet) To: linus-amlogic@lists.infradead.org Subject: [PATCH v2 10/11] clk: fix CLK_SET_RATE_GATE with clock rate protection Date: Sun, 21 May 2017 23:59:57 +0200 [thread overview] Message-ID: <20170521215958.19743-11-jbrunet@baylibre.com> (raw) In-Reply-To: <20170521215958.19743-1-jbrunet@baylibre.com> Using clock rate protection, we can now enforce CLK_SET_RATE_GATE along the clock tree Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> --- drivers/clk/clk.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 01306191133c..6ee5fc59cf1f 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -491,6 +491,9 @@ static void clk_core_unprepare(struct clk_core *core) if (WARN_ON(core->prepare_count == 1 && core->flags & CLK_IS_CRITICAL)) return; + if (core->flags & CLK_SET_RATE_GATE) + clk_core_rate_unprotect(core); + if (--core->prepare_count > 0) return; @@ -561,6 +564,14 @@ static int clk_core_prepare(struct clk_core *core) core->prepare_count++; + /* + * CLK_SET_RATE_GATE is a special case of clock protection + * Instead of a consumer protection, the provider is protecting + * itself when prepared + */ + if (core->flags & CLK_SET_RATE_GATE) + clk_core_rate_protect(core); + return 0; } @@ -1738,9 +1749,6 @@ static int clk_core_set_rate_nolock(struct clk_core *core, if (clk_core_rate_is_protected(core)) return -EBUSY; - if ((core->flags & CLK_SET_RATE_GATE) && core->prepare_count) - return -EBUSY; - /* calculate new rates and get the topmost changed clock */ top = clk_calc_new_rates(core, req_rate); if (!top) -- 2.9.4
next prev parent reply other threads:[~2017-05-21 21:59 UTC|newest] Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-05-21 21:59 [PATCH v2 00/11] clk: implement clock rate protection mechanism Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-21 21:59 ` [PATCH v2 01/11] clk: take the prepare lock out of clk_core_set_parent Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-25 18:54 ` Michael Turquette 2017-05-25 18:54 ` Michael Turquette 2017-05-29 9:35 ` Jerome Brunet 2017-05-29 9:35 ` Jerome Brunet 2017-05-21 21:59 ` [PATCH v2 02/11] clk: add clk_core_set_phase_nolock function Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-23 9:35 ` Adriana Reus 2017-05-23 9:35 ` Adriana Reus 2017-05-23 9:48 ` Jerome Brunet 2017-05-23 9:48 ` Jerome Brunet 2017-05-25 18:58 ` Michael Turquette 2017-05-25 18:58 ` Michael Turquette 2017-05-21 21:59 ` [PATCH v2 03/11] clk: rework calls to round and determine rate callbacks Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-25 20:13 ` Michael Turquette 2017-05-25 20:13 ` Michael Turquette 2017-05-21 21:59 ` [PATCH v2 04/11] clk: use round rate to bail out early in set_rate Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-25 20:20 ` Michael Turquette 2017-05-25 20:20 ` Michael Turquette 2017-05-29 9:12 ` Jerome Brunet 2017-05-29 9:12 ` Jerome Brunet 2017-05-21 21:59 ` [PATCH v2 05/11] clk: add support for clock protection Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-25 20:58 ` Michael Turquette 2017-05-25 20:58 ` Michael Turquette 2017-05-29 9:15 ` Jerome Brunet 2017-05-29 9:15 ` Jerome Brunet 2017-05-21 21:59 ` [PATCH v2 06/11] clk: add clk_set_rate_protect Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-21 21:59 ` [PATCH v2 07/11] clk: rollback set_rate_range changes on failure Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-21 21:59 ` [PATCH v2 08/11] clk: cosmetic changes to clk_summary debugfs entry Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-21 21:59 ` [PATCH v2 09/11] clk: fix incorrect usage of ENOSYS Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet [this message] 2017-05-21 21:59 ` [PATCH v2 10/11] clk: fix CLK_SET_RATE_GATE with clock rate protection Jerome Brunet 2017-05-23 13:42 ` Adriana Reus 2017-05-23 13:42 ` Adriana Reus 2017-05-23 15:09 ` Jerome Brunet 2017-05-23 15:09 ` Jerome Brunet 2017-05-21 21:59 ` [PATCH v2 11/11] clk: move CLK_SET_RATE_GATE protection from prepare to enable Jerome Brunet 2017-05-21 21:59 ` Jerome Brunet 2017-05-29 9:17 ` Jerome Brunet 2017-05-29 9:17 ` Jerome Brunet
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20170521215958.19743-11-jbrunet@baylibre.com \ --to=jbrunet@baylibre.com \ --cc=boris.brezillon@free-electrons.com \ --cc=khilman@baylibre.com \ --cc=linus.walleij@linaro.org \ --cc=linux-amlogic@lists.infradead.org \ --cc=linux-clk@vger.kernel.org \ --cc=mturquette@baylibre.com \ --cc=sboyd@codeaurora.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.