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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 22/24] regmap: Add regmap_read_poll_timeout
Date: Wed,  2 Jun 2021 11:55:05 +0200	[thread overview]
Message-ID: <20210602095507.24609-23-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20210602095507.24609-1-s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 include/regmap.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/regmap.h b/include/regmap.h
index b43cd936fa..057370afc7 100644
--- a/include/regmap.h
+++ b/include/regmap.h
@@ -116,4 +116,28 @@ int regmap_write_bits(struct regmap *map, unsigned int reg,
 int regmap_update_bits(struct regmap *map, unsigned int reg,
 		       unsigned int mask, unsigned int val);
 
+/**
+ * regmap_read_poll_timeout - Poll until a condition is met or a timeout occurs
+ *
+ * @map: Regmap to read from
+ * @addr: Address to poll
+ * @val: Unsigned integer variable to read the value into
+ * @cond: Break condition (usually involving @val)
+ * @timeout_us: Timeout in us, 0 means never timeout
+ *
+ * Returns 0 on success and -ETIMEDOUT upon a timeout or the regmap_read
+ * error return value in case of a error read. In the two former cases,
+ * the last read value at @addr is stored in @val. Must not be called
+ * from atomic context if sleep_us or timeout_us are used.
+ *
+ * This is modelled after the readx_poll_timeout macros in linux/iopoll.h.
+ */
+#define regmap_read_poll_timeout(map, addr, val, cond, timeout_us) \
+({ \
+	int __ret, __tmp; \
+	__tmp = read_poll_timeout(regmap_read, __ret, __ret || (cond), \
+			timeout_us, (map), (addr), &(val)); \
+	__ret ?: __tmp; \
+})
+
 #endif /* __REGMAP_H */
-- 
2.29.2


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  parent reply	other threads:[~2021-06-02 10:01 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-02  9:54 [PATCH v2 00/24] clk updates Sascha Hauer
2021-06-02  9:54 ` [PATCH 01/24] clk: clk-mux: Fix handling of CLK_MUX_HIWORD_MASK Sascha Hauer
2021-06-02 15:18   ` Ahmad Fatoum
2021-06-02  9:54 ` [PATCH 02/24] clk: introduce clk init op Sascha Hauer
2021-06-02  9:54 ` [PATCH 03/24] clk: rename clk_register() to bclk_register() Sascha Hauer
2021-06-02  9:54 ` [PATCH 04/24] clk: introduce struct clk_hw Sascha Hauer
2021-06-11  7:55   ` Ahmad Fatoum
2021-06-11  8:41     ` Sascha Hauer
2021-06-11  9:19       ` Ahmad Fatoum
2021-06-11 11:46         ` Sascha Hauer
2021-06-11 12:14           ` Ahmad Fatoum
2021-06-02  9:54 ` [PATCH 05/24] clk: introduce clk_register() Sascha Hauer
2021-06-02  9:54 ` [PATCH 06/24] clk: divider: Make clk_divider_ops const Sascha Hauer
2021-06-02  9:54 ` [PATCH 07/24] clk: divider: Add ro ops Sascha Hauer
2021-06-02  9:54 ` [PATCH 08/24] clk: divider: Make clk_mux_ops const Sascha Hauer
2021-06-02  9:54 ` [PATCH 09/24] clk: mux: Add ro ops Sascha Hauer
2021-06-02  9:54 ` [PATCH 10/24] clk: move fixed_factor to include/linux/clk.h Sascha Hauer
2021-06-02  9:54 ` [PATCH 11/24] Add rational_best_approximation() Sascha Hauer
2021-06-02 18:25   ` Trent Piepho
2021-06-07 11:22     ` Sascha Hauer
2021-06-02  9:54 ` [PATCH 12/24] clk: Update fractional divider from Linux Sascha Hauer
2021-06-02  9:54 ` [PATCH 13/24] clk: Add lock to different clock types Sascha Hauer
2021-06-02  9:54 ` [PATCH 14/24] clk: Add Linux functions to register a divider Sascha Hauer
2021-06-02  9:54 ` [PATCH 15/24] clk: Add Linux functions to register a fixed factor clock Sascha Hauer
2021-06-02  9:54 ` [PATCH 16/24] clk: Add Linux functions to register a gate Sascha Hauer
2021-06-02  9:55 ` [PATCH 17/24] clk: Add Linux functions to register a mux Sascha Hauer
2021-06-02  9:55 ` [PATCH 18/24] clk: Add CLK_GET_RATE_NOCACHE Sascha Hauer
2021-06-02  9:55 ` [PATCH 19/24] clk: Rename CLK_GATE_INVERTED to CLK_GATE_SET_TO_DISABLE Sascha Hauer
2021-06-02  9:55 ` [PATCH 20/24] clk: implement CLK_SET_RATE_UNGATE Sascha Hauer
2021-06-02  9:55 ` [PATCH 21/24] clk: implement set/get phase Sascha Hauer
2021-06-02  9:55 ` Sascha Hauer [this message]
2021-06-02  9:55 ` [PATCH 23/24] clk: rockchip: Update to current Linux Sascha Hauer
2021-06-02  9:55 ` [PATCH 24/24] clk: Rockchip: Add rk3568 clk support Sascha Hauer
2021-06-09  9:18   ` Ahmad Fatoum

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