[PATCH 4/8] mfd: ocelot: lift chip reset logic to ocelot-core.c

[Rasmus Villemoes <ravi@prevas.dk>]

As further preparation for implementing support for mdio management,
lift the initialization of the ->gcb_regmap, the initial (and
optional) bus initialization callback, and the call of
ocelot_chip_reset() to ocelot_core_init().

Signed-off-by: Rasmus Villemoes <ravi@prevas.dk>
---
 drivers/mfd/ocelot-core.c | 28 +++++++++++++++++++++++++++-
 drivers/mfd/ocelot-spi.c  | 33 +--------------------------------
 2 files changed, 28 insertions(+), 33 deletions(-)

diff --git a/drivers/mfd/ocelot-core.c b/drivers/mfd/ocelot-core.c
index 9caab83138e59..c0ab5492c83f9 100644
--- a/drivers/mfd/ocelot-core.c
+++ b/drivers/mfd/ocelot-core.c
@@ -28,6 +28,9 @@
 
 #include "ocelot.h"
 
+#define VSC7512_CHIP_REGS_RES_START	0x71070000
+#define VSC7512_CHIP_REGS_RES_SIZE	0x14
+
 #define REG_GCB_SOFT_RST		0x0008
 
 #define BIT_SOFT_CHIP_RST		BIT(0)
@@ -123,6 +126,11 @@ int ocelot_chip_reset(struct device *dev)
 }
 EXPORT_SYMBOL_NS(ocelot_chip_reset, "MFD_OCELOT");
 
+static const struct resource vsc7512_gcb_resource =
+	DEFINE_RES_REG_NAMED(VSC7512_CHIP_REGS_RES_START,
+			     VSC7512_CHIP_REGS_RES_SIZE,
+			     "devcpu_gcb_chip_regs");
+
 static const struct resource vsc7512_miim0_resources[] = {
 	DEFINE_RES_REG_NAMED(VSC7512_MIIM0_RES_START, VSC7512_MIIM_RES_SIZE, "gcb_miim0"),
 	DEFINE_RES_REG_NAMED(VSC7512_PHY_RES_START, VSC7512_PHY_RES_SIZE, "gcb_phy"),
@@ -227,7 +235,25 @@ static void ocelot_core_try_add_regmaps(struct device *dev,
 
 int ocelot_core_init(struct device *dev)
 {
-	int i, ndevs;
+	struct ocelot_ddata *ddata = dev_get_drvdata(dev);
+	struct regmap *r;
+	int i, ndevs, err;
+
+	r = ddata->init_regmap(dev, &vsc7512_gcb_resource);
+	if (IS_ERR(r))
+		return PTR_ERR(r);
+
+	ddata->gcb_regmap = r;
+
+	if (ddata->init_bus) {
+		err = ddata->init_bus(dev);
+		if (err)
+			return dev_err_probe(dev, err, "Error initializing bus\n");
+	}
+
+	err = ocelot_chip_reset(dev);
+	if (err)
+		return dev_err_probe(dev, err, "Error resetting device\n");
 
 	ndevs = ARRAY_SIZE(vsc7512_devs);
 
diff --git a/drivers/mfd/ocelot-spi.c b/drivers/mfd/ocelot-spi.c
index 37828dd3ee95e..1844b8451e8e7 100644
--- a/drivers/mfd/ocelot-spi.c
+++ b/drivers/mfd/ocelot-spi.c
@@ -38,9 +38,6 @@
 #define VSC7512_DEVCPU_ORG_RES_START	0x71000000
 #define VSC7512_DEVCPU_ORG_RES_SIZE	0x38
 
-#define VSC7512_CHIP_REGS_RES_START	0x71070000
-#define VSC7512_CHIP_REGS_RES_SIZE	0x14
-
 #define OCELOT_SPI_BYTE_ORDER_LE 0x00000000
 #define OCELOT_SPI_BYTE_ORDER_BE 0x81818181
 
@@ -55,11 +52,6 @@ static const struct resource vsc7512_dev_cpuorg_resource =
 			     VSC7512_DEVCPU_ORG_RES_SIZE,
 			     "devcpu_org");
 
-static const struct resource vsc7512_gcb_resource =
-	DEFINE_RES_REG_NAMED(VSC7512_CHIP_REGS_RES_START,
-			     VSC7512_CHIP_REGS_RES_SIZE,
-			     "devcpu_gcb_chip_regs");
-
 static int ocelot_spi_initialize(struct device *dev)
 {
 	struct ocelot_ddata *ddata = dev_get_drvdata(dev);
@@ -246,30 +238,7 @@ static int ocelot_spi_probe(struct spi_device *spi)
 
 	ddata->cpuorg_regmap = r;
 
-	r = ocelot_spi_init_regmap(dev, &vsc7512_gcb_resource);
-	if (IS_ERR(r))
-		return PTR_ERR(r);
-
-	ddata->gcb_regmap = r;
-
-	/*
-	 * The chip must be set up for SPI before it gets initialized and reset.
-	 * This must be done before calling init, and after a chip reset is
-	 * performed.
-	 */
-	err = ocelot_spi_initialize(dev);
-	if (err)
-		return dev_err_probe(dev, err, "Error initializing SPI bus\n");
-
-	err = ocelot_chip_reset(dev);
-	if (err)
-		return dev_err_probe(dev, err, "Error resetting device\n");
-
-	err = ocelot_core_init(dev);
-	if (err)
-		return dev_err_probe(dev, err, "Error initializing Ocelot core\n");
-
-	return 0;
+	return ocelot_core_init(dev);
 }
 
 static const struct spi_device_id ocelot_spi_ids[] = {
-- 
2.49.0