linux-kernel - [PATCH 17/35] mtd: st_spi_fsm: Prepare read/write sequences according to configuration

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Message-Id: <1392735362-1245-18-git-send-email-lee.jones@linaro.org>
Date:	Tue, 18 Feb 2014 14:55:44 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	lee.jones@...aro.org, DCG_UPD_stlinux_kernel@...t.st.com,
	dwmw2@...radead.org, linux-mtd@...ts.infradead.org,
	computersforpeace@...il.com, Angus.Clark@...com
Subject: [PATCH 17/35] mtd: st_spi_fsm: Prepare read/write sequences according to configuration

Firstly we search for our preference read/write configuration based on a
given chip's capabilities. Then we actually set up the message sequence
accordingly.

Acked-by Angus Clark <angus.clark@...com>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/mtd/devices/st_spi_fsm.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index 94b0cb4..3f5603c 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -618,6 +618,23 @@ static void stfsm_prepare_rw_seq(struct stfsm *fsm,
 	seq->seq[i++] = STFSM_INST_STOP;
 }
 
+static int stfsm_search_prepare_rw_seq(struct stfsm *fsm,
+				       struct stfsm_seq *seq,
+				       struct seq_rw_config *cfgs)
+{
+	struct seq_rw_config *config;
+
+	config = stfsm_search_seq_rw_configs(fsm, cfgs);
+	if (!config) {
+		dev_err(fsm->dev, "failed to find suitable config\n");
+		return -EINVAL;
+	}
+
+	stfsm_prepare_rw_seq(fsm, seq, config);
+
+	return 0;
+}
+
 static void stfsm_read_jedec(struct stfsm *fsm, uint8_t *const jedec)
 {
 	const struct stfsm_seq *seq = &stfsm_seq_read_jedec;
-- 
1.8.3.2

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