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From: Jan Glauber <jglauber@cavium.com>
To: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
	David Daney <ddaney@caviumnetworks.com>,
	Jan Glauber <jglauber@cavium.com>
Subject: [PATCH v11 5/8] i2c: octeon,thunderx: Move register offsets to struct
Date: Wed, 24 Aug 2016 23:25:46 +0200	[thread overview]
Message-ID: <20160824212549.16140-6-jglauber@cavium.com> (raw)
In-Reply-To: <20160824212549.16140-1-jglauber@cavium.com>

The register offsets are different between Octeon and ThunderX so move
them into the algorithm struct and get rid of the define.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
---
 drivers/i2c/busses/i2c-octeon-core.c     | 28 ++++++++++++-------------
 drivers/i2c/busses/i2c-octeon-core.h     | 35 ++++++++++++++++----------------
 drivers/i2c/busses/i2c-octeon-platdrv.c  |  4 ++++
 drivers/i2c/busses/i2c-thunderx-pcidrv.c |  4 ++++
 4 files changed, 40 insertions(+), 31 deletions(-)

diff --git a/drivers/i2c/busses/i2c-octeon-core.c b/drivers/i2c/busses/i2c-octeon-core.c
index 23384ef..a327a5f 100644
--- a/drivers/i2c/busses/i2c-octeon-core.c
+++ b/drivers/i2c/busses/i2c-octeon-core.c
@@ -99,7 +99,7 @@ static int octeon_i2c_wait(struct octeon_i2c *i2c)
 
 static bool octeon_i2c_hlc_test_valid(struct octeon_i2c *i2c)
 {
-	return (__raw_readq(i2c->twsi_base + SW_TWSI) & SW_TWSI_V) == 0;
+	return (__raw_readq(i2c->twsi_base + SW_TWSI(i2c)) & SW_TWSI_V) == 0;
 }
 
 static bool octeon_i2c_hlc_test_ready(struct octeon_i2c *i2c, bool *first)
@@ -446,12 +446,12 @@ static int octeon_i2c_hlc_read(struct octeon_i2c *i2c, struct i2c_msg *msgs)
 	else
 		cmd |= SW_TWSI_OP_7;
 
-	octeon_i2c_writeq_flush(cmd, i2c->twsi_base + SW_TWSI);
+	octeon_i2c_writeq_flush(cmd, i2c->twsi_base + SW_TWSI(i2c));
 	ret = octeon_i2c_hlc_wait(i2c);
 	if (ret)
 		goto err;
 
-	cmd = __raw_readq(i2c->twsi_base + SW_TWSI);
+	cmd = __raw_readq(i2c->twsi_base + SW_TWSI(i2c));
 	if ((cmd & SW_TWSI_R) == 0)
 		return -EAGAIN;
 
@@ -459,7 +459,7 @@ static int octeon_i2c_hlc_read(struct octeon_i2c *i2c, struct i2c_msg *msgs)
 		msgs[0].buf[j] = (cmd >> (8 * i)) & 0xff;
 
 	if (msgs[0].len > 4) {
-		cmd = __raw_readq(i2c->twsi_base + SW_TWSI_EXT);
+		cmd = __raw_readq(i2c->twsi_base + SW_TWSI_EXT(i2c));
 		for (i = 0; i  < msgs[0].len - 4 && i < 4; i++, j--)
 			msgs[0].buf[j] = (cmd >> (8 * i)) & 0xff;
 	}
@@ -496,15 +496,15 @@ static int octeon_i2c_hlc_write(struct octeon_i2c *i2c, struct i2c_msg *msgs)
 
 		for (i = 0; i < msgs[0].len - 4 && i < 4; i++, j--)
 			ext |= (u64)msgs[0].buf[j] << (8 * i);
-		octeon_i2c_writeq_flush(ext, i2c->twsi_base + SW_TWSI_EXT);
+		octeon_i2c_writeq_flush(ext, i2c->twsi_base + SW_TWSI_EXT(i2c));
 	}
 
-	octeon_i2c_writeq_flush(cmd, i2c->twsi_base + SW_TWSI);
+	octeon_i2c_writeq_flush(cmd, i2c->twsi_base + SW_TWSI(i2c));
 	ret = octeon_i2c_hlc_wait(i2c);
 	if (ret)
 		goto err;
 
-	cmd = __raw_readq(i2c->twsi_base + SW_TWSI);
+	cmd = __raw_readq(i2c->twsi_base + SW_TWSI(i2c));
 	if ((cmd & SW_TWSI_R) == 0)
 		return -EAGAIN;
 
@@ -539,19 +539,19 @@ static int octeon_i2c_hlc_comp_read(struct octeon_i2c *i2c, struct i2c_msg *msgs
 		cmd |= SW_TWSI_EIA;
 		ext = (u64)msgs[0].buf[0] << SW_TWSI_IA_SHIFT;
 		cmd |= (u64)msgs[0].buf[1] << SW_TWSI_IA_SHIFT;
-		octeon_i2c_writeq_flush(ext, i2c->twsi_base + SW_TWSI_EXT);
+		octeon_i2c_writeq_flush(ext, i2c->twsi_base + SW_TWSI_EXT(i2c));
 	} else {
 		cmd |= (u64)msgs[0].buf[0] << SW_TWSI_IA_SHIFT;
 	}
 
 	octeon_i2c_hlc_int_clear(i2c);
-	octeon_i2c_writeq_flush(cmd, i2c->twsi_base + SW_TWSI);
+	octeon_i2c_writeq_flush(cmd, i2c->twsi_base + SW_TWSI(i2c));
 
 	ret = octeon_i2c_hlc_wait(i2c);
 	if (ret)
 		goto err;
 
-	cmd = __raw_readq(i2c->twsi_base + SW_TWSI);
+	cmd = __raw_readq(i2c->twsi_base + SW_TWSI(i2c));
 	if ((cmd & SW_TWSI_R) == 0)
 		return -EAGAIN;
 
@@ -559,7 +559,7 @@ static int octeon_i2c_hlc_comp_read(struct octeon_i2c *i2c, struct i2c_msg *msgs
 		msgs[1].buf[j] = (cmd >> (8 * i)) & 0xff;
 
 	if (msgs[1].len > 4) {
-		cmd = __raw_readq(i2c->twsi_base + SW_TWSI_EXT);
+		cmd = __raw_readq(i2c->twsi_base + SW_TWSI_EXT(i2c));
 		for (i = 0; i  < msgs[1].len - 4 && i < 4; i++, j--)
 			msgs[1].buf[j] = (cmd >> (8 * i)) & 0xff;
 	}
@@ -606,16 +606,16 @@ static int octeon_i2c_hlc_comp_write(struct octeon_i2c *i2c, struct i2c_msg *msg
 		set_ext = true;
 	}
 	if (set_ext)
-		octeon_i2c_writeq_flush(ext, i2c->twsi_base + SW_TWSI_EXT);
+		octeon_i2c_writeq_flush(ext, i2c->twsi_base + SW_TWSI_EXT(i2c));
 
 	octeon_i2c_hlc_int_clear(i2c);
-	octeon_i2c_writeq_flush(cmd, i2c->twsi_base + SW_TWSI);
+	octeon_i2c_writeq_flush(cmd, i2c->twsi_base + SW_TWSI(i2c));
 
 	ret = octeon_i2c_hlc_wait(i2c);
 	if (ret)
 		goto err;
 
-	cmd = __raw_readq(i2c->twsi_base + SW_TWSI);
+	cmd = __raw_readq(i2c->twsi_base + SW_TWSI(i2c));
 	if ((cmd & SW_TWSI_R) == 0)
 		return -EAGAIN;
 
diff --git a/drivers/i2c/busses/i2c-octeon-core.h b/drivers/i2c/busses/i2c-octeon-core.h
index 2ed6f7a..87151ea 100644
--- a/drivers/i2c/busses/i2c-octeon-core.h
+++ b/drivers/i2c/busses/i2c-octeon-core.h
@@ -8,17 +8,6 @@
 #include <linux/kernel.h>
 #include <linux/pci.h>
 
-/* Register offsets */
-#if IS_ENABLED(CONFIG_I2C_THUNDERX)
-	#define SW_TWSI			0x1000
-	#define TWSI_INT		0x1010
-	#define SW_TWSI_EXT		0x1018
-#else
-	#define SW_TWSI			0x00
-	#define TWSI_INT		0x10
-	#define SW_TWSI_EXT		0x18
-#endif
-
 /* Controller command patterns */
 #define SW_TWSI_V		BIT_ULL(63)	/* Valid bit */
 #define SW_TWSI_EIA		BIT_ULL(61)	/* Extended internal address */
@@ -98,9 +87,21 @@
 
 #define I2C_OCTEON_EVENT_WAIT 80 /* microseconds */
 
+/* Register offsets */
+struct octeon_i2c_reg_offset {
+	unsigned int sw_twsi;
+	unsigned int twsi_int;
+	unsigned int sw_twsi_ext;
+};
+
+#define SW_TWSI(x)	(x->roff.sw_twsi)
+#define TWSI_INT(x)	(x->roff.twsi_int)
+#define SW_TWSI_EXT(x)	(x->roff.sw_twsi_ext)
+
 struct octeon_i2c {
 	wait_queue_head_t queue;
 	struct i2c_adapter adap;
+	struct octeon_i2c_reg_offset roff;
 	struct clk *clk;
 	int irq;
 	int hlc_irq;		/* For cn7890 only */
@@ -142,9 +143,9 @@ static inline void octeon_i2c_reg_write(struct octeon_i2c *i2c, u64 eop_reg, u8
 {
 	u64 tmp;
 
-	__raw_writeq(SW_TWSI_V | eop_reg | data, i2c->twsi_base + SW_TWSI);
+	__raw_writeq(SW_TWSI_V | eop_reg | data, i2c->twsi_base + SW_TWSI(i2c));
 	do {
-		tmp = __raw_readq(i2c->twsi_base + SW_TWSI);
+		tmp = __raw_readq(i2c->twsi_base + SW_TWSI(i2c));
 	} while ((tmp & SW_TWSI_V) != 0);
 }
 
@@ -166,9 +167,9 @@ static inline u8 octeon_i2c_reg_read(struct octeon_i2c *i2c, u64 eop_reg)
 {
 	u64 tmp;
 
-	__raw_writeq(SW_TWSI_V | eop_reg | SW_TWSI_R, i2c->twsi_base + SW_TWSI);
+	__raw_writeq(SW_TWSI_V | eop_reg | SW_TWSI_R, i2c->twsi_base + SW_TWSI(i2c));
 	do {
-		tmp = __raw_readq(i2c->twsi_base + SW_TWSI);
+		tmp = __raw_readq(i2c->twsi_base + SW_TWSI(i2c));
 	} while ((tmp & SW_TWSI_V) != 0);
 
 	return tmp & 0xFF;
@@ -189,7 +190,7 @@ static inline u8 octeon_i2c_reg_read(struct octeon_i2c *i2c, u64 eop_reg)
  */
 static inline u64 octeon_i2c_read_int(struct octeon_i2c *i2c)
 {
-	return __raw_readq(i2c->twsi_base + TWSI_INT);
+	return __raw_readq(i2c->twsi_base + TWSI_INT(i2c));
 }
 
 /**
@@ -199,7 +200,7 @@ static inline u64 octeon_i2c_read_int(struct octeon_i2c *i2c)
  */
 static inline void octeon_i2c_write_int(struct octeon_i2c *i2c, u64 data)
 {
-	octeon_i2c_writeq_flush(data, i2c->twsi_base + TWSI_INT);
+	octeon_i2c_writeq_flush(data, i2c->twsi_base + TWSI_INT(i2c));
 }
 
 /* Prototypes */
diff --git a/drivers/i2c/busses/i2c-octeon-platdrv.c b/drivers/i2c/busses/i2c-octeon-platdrv.c
index c07d0ee..916ebee 100644
--- a/drivers/i2c/busses/i2c-octeon-platdrv.c
+++ b/drivers/i2c/busses/i2c-octeon-platdrv.c
@@ -163,6 +163,10 @@ static int octeon_i2c_probe(struct platform_device *pdev)
 	}
 	i2c->dev = &pdev->dev;
 
+	i2c->roff.sw_twsi = 0x00;
+	i2c->roff.twsi_int = 0x10;
+	i2c->roff.sw_twsi_ext = 0x18;
+
 	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	i2c->twsi_base = devm_ioremap_resource(&pdev->dev, res_mem);
 	if (IS_ERR(i2c->twsi_base)) {
diff --git a/drivers/i2c/busses/i2c-thunderx-pcidrv.c b/drivers/i2c/busses/i2c-thunderx-pcidrv.c
index e8c3ce0..bba5b42 100644
--- a/drivers/i2c/busses/i2c-thunderx-pcidrv.c
+++ b/drivers/i2c/busses/i2c-thunderx-pcidrv.c
@@ -158,6 +158,10 @@ static int thunder_i2c_probe_pci(struct pci_dev *pdev,
 	if (!i2c)
 		return -ENOMEM;
 
+	i2c->roff.sw_twsi = 0x1000;
+	i2c->roff.twsi_int = 0x1010;
+	i2c->roff.sw_twsi_ext = 0x1018;
+
 	i2c->dev = dev;
 	pci_set_drvdata(pdev, i2c);
 	ret = pcim_enable_device(pdev);
-- 
2.9.0.rc0.21.g7777322

  parent reply	other threads:[~2016-08-24 21:26 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-24 21:25 [PATCH v11 0/8] i2c-octeon and i2c-thunderx driver Jan Glauber
2016-08-24 21:25 ` [PATCH v11 1/8] i2c: octeon: Rename driver to prepare for split Jan Glauber
2016-08-24 21:25 ` [PATCH v11 2/8] i2c: octeon: Split the driver into two parts Jan Glauber
2016-08-24 21:25 ` [PATCH v11 3/8] i2c: thunderx: Add i2c driver for ThunderX SOC Jan Glauber
2016-08-24 21:25 ` [PATCH v11 4/8] i2c: thunderx: Add SMBUS alert support Jan Glauber
2016-08-24 21:25 ` Jan Glauber [this message]
2016-08-24 21:25 ` [PATCH v11 6/8] i2c: octeon: Sort include files alphabetically Jan Glauber
2016-08-24 21:25 ` [PATCH v11 7/8] i2c: octeon: Use booleon values for booleon variables Jan Glauber
2016-08-24 21:25 ` [PATCH v11 8/8] i2c: octeon: thunderx: Add MAINTAINERS entry Jan Glauber
2016-08-25 16:37 ` [PATCH v11 0/8] i2c-octeon and i2c-thunderx driver Wolfram Sang

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