From: Bai Ping <b51503@freescale.com> To: <shawnguo@kernel.org>, <kernel@pengutronix.de> Cc: <mturquette@baylibre.com>, <sboyd@codeaurora.org>, <linux-arm-kernel@lists.infradead.org>, <linux-clk@vger.kernel.org>, <linux-kernel@vger.kernel.org> Subject: [PATCH Resend] clk: imx: add 'is_prepared' clk_ops callback for pllv3 clk Date: Wed, 25 Nov 2015 00:06:53 +0800 [thread overview] Message-ID: <1448381213-24349-1-git-send-email-b51503@freescale.com> (raw) Add 'is_prepared' callback function for pllv3 type clk to make sure when the system is bootup, the unused clk is in a known state to match the prepare count info. Signed-off-by: Bai Ping <b51503@freescale.com> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> --- -resend, add clk maintainers. drivers/clk/imx/clk-pllv3.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c index 6addf8f..c05c43d 100644 --- a/drivers/clk/imx/clk-pllv3.c +++ b/drivers/clk/imx/clk-pllv3.c @@ -97,6 +97,16 @@ static void clk_pllv3_unprepare(struct clk_hw *hw) writel_relaxed(val, pll->base); } +static int clk_pllv3_is_prepared(struct clk_hw *hw) +{ + struct clk_pllv3 *pll = to_clk_pllv3(hw); + + if (readl_relaxed(pll->base) & BM_PLL_LOCK) + return 1; + + return 0; +} + static unsigned long clk_pllv3_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { @@ -139,6 +149,7 @@ static int clk_pllv3_set_rate(struct clk_hw *hw, unsigned long rate, static const struct clk_ops clk_pllv3_ops = { .prepare = clk_pllv3_prepare, .unprepare = clk_pllv3_unprepare, + .is_prepared = clk_pllv3_is_prepared, .recalc_rate = clk_pllv3_recalc_rate, .round_rate = clk_pllv3_round_rate, .set_rate = clk_pllv3_set_rate, @@ -193,6 +204,7 @@ static int clk_pllv3_sys_set_rate(struct clk_hw *hw, unsigned long rate, static const struct clk_ops clk_pllv3_sys_ops = { .prepare = clk_pllv3_prepare, .unprepare = clk_pllv3_unprepare, + .is_prepared = clk_pllv3_is_prepared, .recalc_rate = clk_pllv3_sys_recalc_rate, .round_rate = clk_pllv3_sys_round_rate, .set_rate = clk_pllv3_sys_set_rate, @@ -265,6 +277,7 @@ static int clk_pllv3_av_set_rate(struct clk_hw *hw, unsigned long rate, static const struct clk_ops clk_pllv3_av_ops = { .prepare = clk_pllv3_prepare, .unprepare = clk_pllv3_unprepare, + .is_prepared = clk_pllv3_is_prepared, .recalc_rate = clk_pllv3_av_recalc_rate, .round_rate = clk_pllv3_av_round_rate, .set_rate = clk_pllv3_av_set_rate, @@ -279,6 +292,7 @@ static unsigned long clk_pllv3_enet_recalc_rate(struct clk_hw *hw, static const struct clk_ops clk_pllv3_enet_ops = { .prepare = clk_pllv3_prepare, .unprepare = clk_pllv3_unprepare, + .is_prepared = clk_pllv3_is_prepared, .recalc_rate = clk_pllv3_enet_recalc_rate, }; -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: b51503@freescale.com (Bai Ping) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH Resend] clk: imx: add 'is_prepared' clk_ops callback for pllv3 clk Date: Wed, 25 Nov 2015 00:06:53 +0800 [thread overview] Message-ID: <1448381213-24349-1-git-send-email-b51503@freescale.com> (raw) Add 'is_prepared' callback function for pllv3 type clk to make sure when the system is bootup, the unused clk is in a known state to match the prepare count info. Signed-off-by: Bai Ping <b51503@freescale.com> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> --- -resend, add clk maintainers. drivers/clk/imx/clk-pllv3.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c index 6addf8f..c05c43d 100644 --- a/drivers/clk/imx/clk-pllv3.c +++ b/drivers/clk/imx/clk-pllv3.c @@ -97,6 +97,16 @@ static void clk_pllv3_unprepare(struct clk_hw *hw) writel_relaxed(val, pll->base); } +static int clk_pllv3_is_prepared(struct clk_hw *hw) +{ + struct clk_pllv3 *pll = to_clk_pllv3(hw); + + if (readl_relaxed(pll->base) & BM_PLL_LOCK) + return 1; + + return 0; +} + static unsigned long clk_pllv3_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { @@ -139,6 +149,7 @@ static int clk_pllv3_set_rate(struct clk_hw *hw, unsigned long rate, static const struct clk_ops clk_pllv3_ops = { .prepare = clk_pllv3_prepare, .unprepare = clk_pllv3_unprepare, + .is_prepared = clk_pllv3_is_prepared, .recalc_rate = clk_pllv3_recalc_rate, .round_rate = clk_pllv3_round_rate, .set_rate = clk_pllv3_set_rate, @@ -193,6 +204,7 @@ static int clk_pllv3_sys_set_rate(struct clk_hw *hw, unsigned long rate, static const struct clk_ops clk_pllv3_sys_ops = { .prepare = clk_pllv3_prepare, .unprepare = clk_pllv3_unprepare, + .is_prepared = clk_pllv3_is_prepared, .recalc_rate = clk_pllv3_sys_recalc_rate, .round_rate = clk_pllv3_sys_round_rate, .set_rate = clk_pllv3_sys_set_rate, @@ -265,6 +277,7 @@ static int clk_pllv3_av_set_rate(struct clk_hw *hw, unsigned long rate, static const struct clk_ops clk_pllv3_av_ops = { .prepare = clk_pllv3_prepare, .unprepare = clk_pllv3_unprepare, + .is_prepared = clk_pllv3_is_prepared, .recalc_rate = clk_pllv3_av_recalc_rate, .round_rate = clk_pllv3_av_round_rate, .set_rate = clk_pllv3_av_set_rate, @@ -279,6 +292,7 @@ static unsigned long clk_pllv3_enet_recalc_rate(struct clk_hw *hw, static const struct clk_ops clk_pllv3_enet_ops = { .prepare = clk_pllv3_prepare, .unprepare = clk_pllv3_unprepare, + .is_prepared = clk_pllv3_is_prepared, .recalc_rate = clk_pllv3_enet_recalc_rate, }; -- 1.9.1
next reply other threads:[~2015-11-24 8:03 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-11-24 16:06 Bai Ping [this message] 2015-11-24 16:06 ` [PATCH Resend] clk: imx: add 'is_prepared' clk_ops callback for pllv3 clk Bai Ping 2015-11-25 3:51 ` Shawn Guo 2015-11-25 3:51 ` Shawn Guo
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