From: Tero Kristo <t-kristo@ti.com> To: linux-omap@vger.kernel.org, paul@pwsan.com, khilman@ti.com Cc: linux-arm-kernel@lists.infradead.org Subject: [PATCHv4 1/8] ARM: OMAP: clk: add support for omap_clk_for_each Date: Fri, 13 Jul 2012 17:19:38 +0300 [thread overview] Message-ID: <1342189185-5306-2-git-send-email-t-kristo@ti.com> (raw) In-Reply-To: <1342189185-5306-1-git-send-email-t-kristo@ti.com> This works similarly to e.g. pwrdm_for_each(). Needed by enhanced usecounting debug functionality that will be added to pm-debug. Signed-off-by: Tero Kristo <t-kristo@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@ti.com> --- arch/arm/plat-omap/clock.c | 33 +++++++++++++++++++++++++++++++ arch/arm/plat-omap/include/plat/clock.h | 2 + 2 files changed, 35 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c index 706b7e2..ad9dc59 100644 --- a/arch/arm/plat-omap/clock.c +++ b/arch/arm/plat-omap/clock.c @@ -355,6 +355,39 @@ int omap_clk_enable_autoidle_all(void) return 0; } +/** + * omap_clk_for_each - call a function for each registered clock + * @fn: pointer to callback function + * @data: void * data to pass to callback function + * + * Call @fn for each registered clock, passing @data to each function. + * @fn must return 0 for success or any other value for failure. If + * @fn returns non-zero, the iteration across clocks will stop and + * the non-zero return value will be passed to the caller of + * omap_clk_for_each(). @fn is called with clockfw_lock held. + */ +int omap_clk_for_each(int (*fn)(struct clk *clk, void *user), void *user) +{ + struct clk *c; + unsigned long flags; + int ret = 0; + + if (!fn) + return -EINVAL; + + spin_lock_irqsave(&clockfw_lock, flags); + + list_for_each_entry(c, &clocks, node) { + ret = fn(c, user); + if (ret) + break; + } + + spin_unlock_irqrestore(&clockfw_lock, flags); + + return ret; +} + int omap_clk_disable_autoidle_all(void) { struct clk *c; diff --git a/arch/arm/plat-omap/include/plat/clock.h b/arch/arm/plat-omap/include/plat/clock.h index d0ef57c..998947e 100644 --- a/arch/arm/plat-omap/include/plat/clock.h +++ b/arch/arm/plat-omap/include/plat/clock.h @@ -294,6 +294,8 @@ extern void propagate_rate(struct clk *clk); extern void recalculate_root_clocks(void); extern unsigned long followparent_recalc(struct clk *clk); extern void clk_enable_init_clocks(void); +extern int omap_clk_for_each(int (*fn)(struct clk *clk, void *user), + void *user); unsigned long omap_fixed_divisor_recalc(struct clk *clk); extern struct clk *omap_clk_get_by_name(const char *name); extern int omap_clk_enable_autoidle_all(void); -- 1.7.4.1
WARNING: multiple messages have this Message-ID (diff)
From: t-kristo@ti.com (Tero Kristo) To: linux-arm-kernel@lists.infradead.org Subject: [PATCHv4 1/8] ARM: OMAP: clk: add support for omap_clk_for_each Date: Fri, 13 Jul 2012 17:19:38 +0300 [thread overview] Message-ID: <1342189185-5306-2-git-send-email-t-kristo@ti.com> (raw) In-Reply-To: <1342189185-5306-1-git-send-email-t-kristo@ti.com> This works similarly to e.g. pwrdm_for_each(). Needed by enhanced usecounting debug functionality that will be added to pm-debug. Signed-off-by: Tero Kristo <t-kristo@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@ti.com> --- arch/arm/plat-omap/clock.c | 33 +++++++++++++++++++++++++++++++ arch/arm/plat-omap/include/plat/clock.h | 2 + 2 files changed, 35 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c index 706b7e2..ad9dc59 100644 --- a/arch/arm/plat-omap/clock.c +++ b/arch/arm/plat-omap/clock.c @@ -355,6 +355,39 @@ int omap_clk_enable_autoidle_all(void) return 0; } +/** + * omap_clk_for_each - call a function for each registered clock + * @fn: pointer to callback function + * @data: void * data to pass to callback function + * + * Call @fn for each registered clock, passing @data to each function. + * @fn must return 0 for success or any other value for failure. If + * @fn returns non-zero, the iteration across clocks will stop and + * the non-zero return value will be passed to the caller of + * omap_clk_for_each(). @fn is called with clockfw_lock held. + */ +int omap_clk_for_each(int (*fn)(struct clk *clk, void *user), void *user) +{ + struct clk *c; + unsigned long flags; + int ret = 0; + + if (!fn) + return -EINVAL; + + spin_lock_irqsave(&clockfw_lock, flags); + + list_for_each_entry(c, &clocks, node) { + ret = fn(c, user); + if (ret) + break; + } + + spin_unlock_irqrestore(&clockfw_lock, flags); + + return ret; +} + int omap_clk_disable_autoidle_all(void) { struct clk *c; diff --git a/arch/arm/plat-omap/include/plat/clock.h b/arch/arm/plat-omap/include/plat/clock.h index d0ef57c..998947e 100644 --- a/arch/arm/plat-omap/include/plat/clock.h +++ b/arch/arm/plat-omap/include/plat/clock.h @@ -294,6 +294,8 @@ extern void propagate_rate(struct clk *clk); extern void recalculate_root_clocks(void); extern unsigned long followparent_recalc(struct clk *clk); extern void clk_enable_init_clocks(void); +extern int omap_clk_for_each(int (*fn)(struct clk *clk, void *user), + void *user); unsigned long omap_fixed_divisor_recalc(struct clk *clk); extern struct clk *omap_clk_get_by_name(const char *name); extern int omap_clk_enable_autoidle_all(void); -- 1.7.4.1
next prev parent reply other threads:[~2012-07-13 14:20 UTC|newest] Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-07-13 14:19 [PATCHv4 0/8] ARM: OMAP: pm: usecounting changes Tero Kristo 2012-07-13 14:19 ` Tero Kristo 2012-07-13 14:19 ` Tero Kristo [this message] 2012-07-13 14:19 ` [PATCHv4 1/8] ARM: OMAP: clk: add support for omap_clk_for_each Tero Kristo 2012-07-16 10:04 ` Rajendra Nayak 2012-07-16 10:04 ` Rajendra Nayak 2012-07-16 11:42 ` Tero Kristo 2012-07-16 11:42 ` Tero Kristo 2012-07-13 14:19 ` [PATCHv4 2/8] ARM: OMAP3+: voltage/pwrdm/clkdm/clock add recursive usecount tracking Tero Kristo 2012-07-13 14:19 ` Tero Kristo 2012-07-16 10:15 ` Rajendra Nayak 2012-07-16 10:15 ` Rajendra Nayak 2012-07-27 19:14 ` Kevin Hilman 2012-07-27 19:14 ` Kevin Hilman 2012-08-06 23:31 ` Kevin Hilman 2012-08-06 23:31 ` Kevin Hilman 2012-09-07 9:23 ` Tero Kristo 2012-09-07 9:23 ` Tero Kristo 2012-07-13 14:19 ` [PATCHv4 3/8] ARM: OMAP3+: voltage: add support for voltagedomain usecounts Tero Kristo 2012-07-13 14:19 ` Tero Kristo 2012-07-16 10:23 ` Rajendra Nayak 2012-07-16 10:23 ` Rajendra Nayak 2012-07-24 20:58 ` Vishwanath Sripathy 2012-07-24 20:58 ` Vishwanath Sripathy 2012-07-25 8:07 ` Tero Kristo 2012-07-25 8:07 ` Tero Kristo 2012-07-13 14:19 ` [PATCHv4 4/8] ARM: OMAP3: add manual control for mpu / core pwrdm usecounting Tero Kristo 2012-07-13 14:19 ` Tero Kristo 2012-07-16 10:30 ` Rajendra Nayak 2012-07-16 10:30 ` Rajendra Nayak 2012-07-27 19:36 ` Kevin Hilman 2012-07-27 19:36 ` Kevin Hilman 2012-07-30 8:40 ` Tero Kristo 2012-07-30 8:40 ` Tero Kristo 2012-08-06 10:14 ` Jean Pihet 2012-08-06 10:14 ` Jean Pihet 2012-09-07 9:30 ` Tero Kristo 2012-09-07 9:30 ` Tero Kristo 2012-09-07 21:48 ` Kevin Hilman 2012-09-07 21:48 ` Kevin Hilman 2012-08-06 23:32 ` Kevin Hilman 2012-08-06 23:32 ` Kevin Hilman 2012-07-13 14:19 ` [PATCHv4 5/8] ARM: OMAP3: set autoidle flag for sdrc_ick Tero Kristo 2012-07-13 14:19 ` Tero Kristo 2012-07-16 10:39 ` Rajendra Nayak 2012-07-16 10:39 ` Rajendra Nayak 2012-07-13 14:19 ` [PATCHv4 6/8] ARM: OMAP: pm-debug: enhanced usecount debug support Tero Kristo 2012-07-13 14:19 ` Tero Kristo 2012-07-16 10:50 ` Rajendra Nayak 2012-07-16 10:50 ` Rajendra Nayak 2012-07-16 11:45 ` Tero Kristo 2012-07-16 11:45 ` Tero Kristo 2012-07-16 12:14 ` Rajendra Nayak 2012-07-16 12:14 ` Rajendra Nayak 2012-07-27 19:55 ` Kevin Hilman 2012-07-27 19:55 ` Kevin Hilman 2012-07-30 8:36 ` Tero Kristo 2012-07-30 8:36 ` Tero Kristo 2012-07-13 14:19 ` [PATCHv4 7/8] ARM: OMAP: clockdomain: add support for preventing autodep delete Tero Kristo 2012-07-13 14:19 ` Tero Kristo 2012-07-16 11:00 ` Rajendra Nayak 2012-07-16 11:00 ` Rajendra Nayak 2012-07-17 14:56 ` Tero Kristo 2012-07-17 14:56 ` Tero Kristo 2012-07-17 21:31 ` Paul Walmsley 2012-07-17 21:31 ` Paul Walmsley 2012-07-18 7:15 ` Rajendra Nayak 2012-07-18 7:15 ` Rajendra Nayak 2012-07-18 8:05 ` Tero Kristo 2012-07-18 8:05 ` Tero Kristo 2012-07-18 9:04 ` Rajendra Nayak 2012-07-18 9:04 ` Rajendra Nayak 2012-07-18 9:16 ` Tero Kristo 2012-07-18 9:16 ` Tero Kristo 2012-07-27 20:12 ` Kevin Hilman 2012-07-27 20:12 ` Kevin Hilman 2012-07-13 14:19 ` [PATCHv4 8/8] ARM: OMAP3: do not delete per_clkdm autodeps during idle Tero Kristo 2012-07-13 14:19 ` Tero Kristo 2012-09-18 22:25 ` Paul Walmsley 2012-09-18 22:25 ` Paul Walmsley 2012-09-18 22:43 ` Paul Walmsley 2012-09-18 22:43 ` Paul Walmsley 2012-09-19 22:15 ` Kevin Hilman 2012-09-19 22:15 ` Kevin Hilman 2012-10-16 7:29 ` Paul Walmsley 2012-10-16 7:29 ` Paul Walmsley 2012-10-17 0:39 ` Kevin Hilman 2012-10-17 0:39 ` Kevin Hilman 2012-10-31 11:59 ` Tero Kristo 2012-10-31 11:59 ` Tero Kristo 2012-09-19 9:06 ` Tero Kristo 2012-09-19 9:06 ` Tero Kristo
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