Patchwork [U-Boot,02/11] u8500: Moving prcmu to cpu directory

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Submitter mathieu.poirier@linaro.org
Date July 31, 2012, 6:59 p.m.
Message ID <1343761173-1135-3-git-send-email-mathieu.poirier@linaro.org>
Download mbox | patch
Permalink /patch/174307/
State Accepted
Delegated to: Tom Rini
Headers show

Comments

mathieu.poirier@linaro.org - July 31, 2012, 6:59 p.m.
From: "Mathieu J. Poirier" <mathieu.poirier@linaro.org>

This is to allow the prcmu functions to be used by multiple
u8500-based processors.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---
 arch/arm/cpu/armv7/u8500/Makefile       |    2 +-
 arch/arm/cpu/armv7/u8500/prcmu.c        |  164 ++++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-u8500/prcmu.h |   55 ++++++++++
 board/st-ericsson/u8500/Makefile        |    2 +-
 board/st-ericsson/u8500/prcmu-fw.h      |   55 ----------
 board/st-ericsson/u8500/prcmu.c         |  165 -------------------------------
 board/st-ericsson/u8500/u8500_href.c    |    2 +-
 7 files changed, 222 insertions(+), 223 deletions(-)
 create mode 100644 arch/arm/cpu/armv7/u8500/prcmu.c
 create mode 100644 arch/arm/include/asm/arch-u8500/prcmu.h
 delete mode 100644 board/st-ericsson/u8500/prcmu-fw.h
 delete mode 100644 board/st-ericsson/u8500/prcmu.c

Patch

diff --git a/arch/arm/cpu/armv7/u8500/Makefile b/arch/arm/cpu/armv7/u8500/Makefile
index 270aa40..77accde 100644
--- a/arch/arm/cpu/armv7/u8500/Makefile
+++ b/arch/arm/cpu/armv7/u8500/Makefile
@@ -25,7 +25,7 @@  include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(SOC).o
 
-COBJS	= timer.o clock.o
+COBJS	= timer.o clock.o prcmu.o
 SOBJS	= lowlevel.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/arch/arm/cpu/armv7/u8500/prcmu.c b/arch/arm/cpu/armv7/u8500/prcmu.c
new file mode 100644
index 0000000..b256d27
--- /dev/null
+++ b/arch/arm/cpu/armv7/u8500/prcmu.c
@@ -0,0 +1,164 @@ 
+/*
+ * Copyright (C) 2009 ST-Ericsson SA
+ *
+ * Adapted from the Linux version:
+ * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ */
+
+/*
+ * NOTE: This currently does not support the I2C workaround access method.
+ */
+
+#include <common.h>
+#include <config.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/types.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/arch/prcmu.h>
+
+/* CPU mailbox registers */
+#define PRCM_MBOX_CPU_VAL (U8500_PRCMU_BASE + 0x0fc)
+#define PRCM_MBOX_CPU_SET (U8500_PRCMU_BASE + 0x100)
+#define PRCM_MBOX_CPU_CLR (U8500_PRCMU_BASE + 0x104)
+
+static int prcmu_is_ready(void)
+{
+	int ready = readb(PRCM_XP70_CUR_PWR_STATE) == AP_EXECUTE;
+	if (!ready)
+		printf("PRCMU firmware not ready\n");
+	return ready;
+}
+
+static int _wait_for_req_complete(int num)
+{
+	int timeout = 1000;
+
+	/* checking any already on-going transaction */
+	while ((readl(PRCM_MBOX_CPU_VAL) & (1 << num)) && timeout)
+		timeout--;
+
+	timeout = 1000;
+
+	/* Set an interrupt to XP70 */
+	writel(1 << num, PRCM_MBOX_CPU_SET);
+
+	while ((readl(PRCM_MBOX_CPU_VAL) & (1 << num)) && timeout)
+		timeout--;
+
+	if (!timeout) {
+		printf("PRCMU operation timed out\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+/**
+ * prcmu_i2c_read - PRCMU - 4500 communication using PRCMU I2C
+ * @reg: - db8500 register bank to be accessed
+ * @slave:  - db8500 register to be accessed
+ * Returns: ACK_MB5  value containing the status
+ */
+int prcmu_i2c_read(u8 reg, u16 slave)
+{
+	uint8_t i2c_status;
+	uint8_t i2c_val;
+
+	if (!prcmu_is_ready())
+		return -1;
+
+	debug("\nprcmu_4500_i2c_read:bank=%x;reg=%x;\n",
+			reg, slave);
+
+	/* prepare the data for mailbox 5 */
+	writeb((reg << 1) | I2CREAD, PRCM_REQ_MB5_I2COPTYPE_REG);
+	writeb((1 << 3) | 0x0, PRCM_REQ_MB5_BIT_FIELDS);
+	writeb(slave, PRCM_REQ_MB5_I2CSLAVE);
+	writeb(0, PRCM_REQ_MB5_I2CVAL);
+
+	_wait_for_req_complete(REQ_MB5);
+
+	/* retrieve values */
+	debug("ack-mb5:transfer status = %x\n",
+			readb(PRCM_ACK_MB5_STATUS));
+	debug("ack-mb5:reg bank = %x\n", readb(PRCM_ACK_MB5) >> 1);
+	debug("ack-mb5:slave_add = %x\n",
+			readb(PRCM_ACK_MB5_SLAVE));
+	debug("ack-mb5:reg_val = %d\n", readb(PRCM_ACK_MB5_VAL));
+
+	i2c_status = readb(PRCM_ACK_MB5_STATUS);
+	i2c_val = readb(PRCM_ACK_MB5_VAL);
+
+	if (i2c_status == I2C_RD_OK)
+		return i2c_val;
+	else {
+
+		printf("prcmu_i2c_read:read return status= %d\n",
+				i2c_status);
+		return -1;
+	}
+
+}
+
+/**
+ * prcmu_i2c_write - PRCMU-db8500 communication using PRCMU I2C
+ * @reg: - db8500 register bank to be accessed
+ * @slave:  - db800 register to be written to
+ * @reg_data: - the data to write
+ * Returns: ACK_MB5 value containing the status
+ */
+int prcmu_i2c_write(u8 reg, u16 slave, u8 reg_data)
+{
+	uint8_t i2c_status;
+
+	if (!prcmu_is_ready())
+		return -1;
+
+	debug("\nprcmu_4500_i2c_write:bank=%x;reg=%x;\n",
+			reg, slave);
+
+	/* prepare the data for mailbox 5 */
+	writeb((reg << 1) | I2CWRITE, PRCM_REQ_MB5_I2COPTYPE_REG);
+	writeb((1 << 3) | 0x0, PRCM_REQ_MB5_BIT_FIELDS);
+	writeb(slave, PRCM_REQ_MB5_I2CSLAVE);
+	writeb(reg_data, PRCM_REQ_MB5_I2CVAL);
+
+	debug("\ncpu_is_u8500v11\n");
+	_wait_for_req_complete(REQ_MB5);
+
+	/* retrieve values */
+	debug("ack-mb5:transfer status = %x\n",
+			readb(PRCM_ACK_MB5_STATUS));
+	debug("ack-mb5:reg bank = %x\n", readb(PRCM_ACK_MB5) >> 1);
+	debug("ack-mb5:slave_add = %x\n",
+			readb(PRCM_ACK_MB5_SLAVE));
+	debug("ack-mb5:reg_val = %d\n", readb(PRCM_ACK_MB5_VAL));
+
+	i2c_status = readb(PRCM_ACK_MB5_STATUS);
+	debug("\ni2c_status = %x\n", i2c_status);
+	if (i2c_status == I2C_WR_OK)
+		return 0;
+	else {
+		printf("ape-i2c: i2c_status : 0x%x\n", i2c_status);
+		return -1;
+	}
+}
diff --git a/arch/arm/include/asm/arch-u8500/prcmu.h b/arch/arm/include/asm/arch-u8500/prcmu.h
new file mode 100644
index 0000000..0836983
--- /dev/null
+++ b/arch/arm/include/asm/arch-u8500/prcmu.h
@@ -0,0 +1,55 @@ 
+/*
+ * Copyright (C) 2009 ST-Ericsson SA
+ *
+ * Copied from the Linux version:
+ * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef __MACH_PRCMU_FW_V1_H
+#define __MACH_PRCMU_FW_V1_H
+
+#define AP_EXECUTE	2
+#define I2CREAD		1
+#define I2C_WR_OK	1
+#define I2C_RD_OK	2
+#define I2CWRITE	0
+
+#define _PRCMU_TCDM_BASE    U8500_PRCMU_TCDM_BASE
+#define PRCM_XP70_CUR_PWR_STATE (_PRCMU_TCDM_BASE + 0xFFC)      /* 4 BYTES */
+
+#define PRCM_REQ_MB5        (_PRCMU_TCDM_BASE + 0xE44)    /* 4 bytes  */
+#define PRCM_ACK_MB5        (_PRCMU_TCDM_BASE + 0xDF4)    /* 4 bytes */
+
+/* Mailbox 5 Requests */
+#define PRCM_REQ_MB5_I2COPTYPE_REG	(PRCM_REQ_MB5 + 0x0)
+#define PRCM_REQ_MB5_BIT_FIELDS		(PRCM_REQ_MB5 + 0x1)
+#define PRCM_REQ_MB5_I2CSLAVE		(PRCM_REQ_MB5 + 0x2)
+#define PRCM_REQ_MB5_I2CVAL		(PRCM_REQ_MB5 + 0x3)
+
+/* Mailbox 5 ACKs */
+#define PRCM_ACK_MB5_STATUS	(PRCM_ACK_MB5 + 0x1)
+#define PRCM_ACK_MB5_SLAVE	(PRCM_ACK_MB5 + 0x2)
+#define PRCM_ACK_MB5_VAL	(PRCM_ACK_MB5 + 0x3)
+
+#define LOW_POWER_WAKEUP	1
+#define EXE_WAKEUP		0
+
+#define REQ_MB5			5
+
+extern int prcmu_i2c_read(u8 reg, u16 slave);
+extern int prcmu_i2c_write(u8 reg, u16 slave, u8 reg_data);
+
+#endif /* __MACH_PRCMU_FW_V1_H */
diff --git a/board/st-ericsson/u8500/Makefile b/board/st-ericsson/u8500/Makefile
index 4091a42..4ea2212 100644
--- a/board/st-ericsson/u8500/Makefile
+++ b/board/st-ericsson/u8500/Makefile
@@ -25,7 +25,7 @@  include $(TOPDIR)/config.mk
 CFLAGS += -D__RELEASE -D__STN_8500
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS	:= u8500_href.o gpio.o prcmu.o
+COBJS	:= u8500_href.o gpio.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
diff --git a/board/st-ericsson/u8500/prcmu-fw.h b/board/st-ericsson/u8500/prcmu-fw.h
deleted file mode 100644
index 0836983..0000000
--- a/board/st-ericsson/u8500/prcmu-fw.h
+++ /dev/null
@@ -1,55 +0,0 @@ 
-/*
- * Copyright (C) 2009 ST-Ericsson SA
- *
- * Copied from the Linux version:
- * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-#ifndef __MACH_PRCMU_FW_V1_H
-#define __MACH_PRCMU_FW_V1_H
-
-#define AP_EXECUTE	2
-#define I2CREAD		1
-#define I2C_WR_OK	1
-#define I2C_RD_OK	2
-#define I2CWRITE	0
-
-#define _PRCMU_TCDM_BASE    U8500_PRCMU_TCDM_BASE
-#define PRCM_XP70_CUR_PWR_STATE (_PRCMU_TCDM_BASE + 0xFFC)      /* 4 BYTES */
-
-#define PRCM_REQ_MB5        (_PRCMU_TCDM_BASE + 0xE44)    /* 4 bytes  */
-#define PRCM_ACK_MB5        (_PRCMU_TCDM_BASE + 0xDF4)    /* 4 bytes */
-
-/* Mailbox 5 Requests */
-#define PRCM_REQ_MB5_I2COPTYPE_REG	(PRCM_REQ_MB5 + 0x0)
-#define PRCM_REQ_MB5_BIT_FIELDS		(PRCM_REQ_MB5 + 0x1)
-#define PRCM_REQ_MB5_I2CSLAVE		(PRCM_REQ_MB5 + 0x2)
-#define PRCM_REQ_MB5_I2CVAL		(PRCM_REQ_MB5 + 0x3)
-
-/* Mailbox 5 ACKs */
-#define PRCM_ACK_MB5_STATUS	(PRCM_ACK_MB5 + 0x1)
-#define PRCM_ACK_MB5_SLAVE	(PRCM_ACK_MB5 + 0x2)
-#define PRCM_ACK_MB5_VAL	(PRCM_ACK_MB5 + 0x3)
-
-#define LOW_POWER_WAKEUP	1
-#define EXE_WAKEUP		0
-
-#define REQ_MB5			5
-
-extern int prcmu_i2c_read(u8 reg, u16 slave);
-extern int prcmu_i2c_write(u8 reg, u16 slave, u8 reg_data);
-
-#endif /* __MACH_PRCMU_FW_V1_H */
diff --git a/board/st-ericsson/u8500/prcmu.c b/board/st-ericsson/u8500/prcmu.c
deleted file mode 100644
index 6f9302f..0000000
--- a/board/st-ericsson/u8500/prcmu.c
+++ /dev/null
@@ -1,165 +0,0 @@ 
-/*
- * Copyright (C) 2009 ST-Ericsson SA
- *
- * Adapted from the Linux version:
- * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- */
-
-/*
- * NOTE: This currently does not support the I2C workaround access method.
- */
-
-#include <common.h>
-#include <config.h>
-#include <asm/io.h>
-#include <asm/arch/hardware.h>
-#include <asm/types.h>
-#include <asm/io.h>
-#include <asm/errno.h>
-
-#include "prcmu-fw.h"
-
-/* CPU mailbox registers */
-#define PRCM_MBOX_CPU_VAL (U8500_PRCMU_BASE + 0x0fc)
-#define PRCM_MBOX_CPU_SET (U8500_PRCMU_BASE + 0x100)
-#define PRCM_MBOX_CPU_CLR (U8500_PRCMU_BASE + 0x104)
-
-static int prcmu_is_ready(void)
-{
-	int ready = readb(PRCM_XP70_CUR_PWR_STATE) == AP_EXECUTE;
-	if (!ready)
-		printf("PRCMU firmware not ready\n");
-	return ready;
-}
-
-static int _wait_for_req_complete(int num)
-{
-	int timeout = 1000;
-
-	/* checking any already on-going transaction */
-	while ((readl(PRCM_MBOX_CPU_VAL) & (1 << num)) && timeout--)
-		;
-
-	timeout = 1000;
-
-	/* Set an interrupt to XP70 */
-	writel(1 << num, PRCM_MBOX_CPU_SET);
-
-	while ((readl(PRCM_MBOX_CPU_VAL) & (1 << num)) && timeout--)
-		;
-
-	if (!timeout) {
-		printf("PRCMU operation timed out\n");
-		return -1;
-	}
-
-	return 0;
-}
-
-/**
- * prcmu_i2c_read - PRCMU - 4500 communication using PRCMU I2C
- * @reg: - db8500 register bank to be accessed
- * @slave:  - db8500 register to be accessed
- * Returns: ACK_MB5  value containing the status
- */
-int prcmu_i2c_read(u8 reg, u16 slave)
-{
-	uint8_t i2c_status;
-	uint8_t i2c_val;
-
-	if (!prcmu_is_ready())
-		return -1;
-
-	debug("\nprcmu_4500_i2c_read:bank=%x;reg=%x;\n",
-			reg, slave);
-
-	/* prepare the data for mailbox 5 */
-	writeb((reg << 1) | I2CREAD, PRCM_REQ_MB5_I2COPTYPE_REG);
-	writeb((1 << 3) | 0x0, PRCM_REQ_MB5_BIT_FIELDS);
-	writeb(slave, PRCM_REQ_MB5_I2CSLAVE);
-	writeb(0, PRCM_REQ_MB5_I2CVAL);
-
-	_wait_for_req_complete(REQ_MB5);
-
-	/* retrieve values */
-	debug("ack-mb5:transfer status = %x\n",
-			readb(PRCM_ACK_MB5_STATUS));
-	debug("ack-mb5:reg bank = %x\n", readb(PRCM_ACK_MB5) >> 1);
-	debug("ack-mb5:slave_add = %x\n",
-			readb(PRCM_ACK_MB5_SLAVE));
-	debug("ack-mb5:reg_val = %d\n", readb(PRCM_ACK_MB5_VAL));
-
-	i2c_status = readb(PRCM_ACK_MB5_STATUS);
-	i2c_val = readb(PRCM_ACK_MB5_VAL);
-
-	if (i2c_status == I2C_RD_OK)
-		return i2c_val;
-	else {
-
-		printf("prcmu_i2c_read:read return status= %d\n",
-				i2c_status);
-		return -1;
-	}
-
-}
-
-/**
- * prcmu_i2c_write - PRCMU-db8500 communication using PRCMU I2C
- * @reg: - db8500 register bank to be accessed
- * @slave:  - db800 register to be written to
- * @reg_data: - the data to write
- * Returns: ACK_MB5 value containing the status
- */
-int prcmu_i2c_write(u8 reg, u16 slave, u8 reg_data)
-{
-	uint8_t i2c_status;
-
-	if (!prcmu_is_ready())
-		return -1;
-
-	debug("\nprcmu_4500_i2c_write:bank=%x;reg=%x;\n",
-			reg, slave);
-
-	/* prepare the data for mailbox 5 */
-	writeb((reg << 1) | I2CWRITE, PRCM_REQ_MB5_I2COPTYPE_REG);
-	writeb((1 << 3) | 0x0, PRCM_REQ_MB5_BIT_FIELDS);
-	writeb(slave, PRCM_REQ_MB5_I2CSLAVE);
-	writeb(reg_data, PRCM_REQ_MB5_I2CVAL);
-
-	debug("\ncpu_is_u8500v11\n");
-	_wait_for_req_complete(REQ_MB5);
-
-	/* retrieve values */
-	debug("ack-mb5:transfer status = %x\n",
-			readb(PRCM_ACK_MB5_STATUS));
-	debug("ack-mb5:reg bank = %x\n", readb(PRCM_ACK_MB5) >> 1);
-	debug("ack-mb5:slave_add = %x\n",
-			readb(PRCM_ACK_MB5_SLAVE));
-	debug("ack-mb5:reg_val = %d\n", readb(PRCM_ACK_MB5_VAL));
-
-	i2c_status = readb(PRCM_ACK_MB5_STATUS);
-	debug("\ni2c_status = %x\n", i2c_status);
-	if (i2c_status == I2C_WR_OK)
-		return 0;
-	else {
-		printf("ape-i2c: i2c_status : 0x%x\n", i2c_status);
-		return -1;
-	}
-}
diff --git a/board/st-ericsson/u8500/u8500_href.c b/board/st-ericsson/u8500/u8500_href.c
index 5f85fdc..6e3fc87 100644
--- a/board/st-ericsson/u8500/u8500_href.c
+++ b/board/st-ericsson/u8500/u8500_href.c
@@ -27,7 +27,7 @@ 
 #include <asm/arch/hardware.h>
 #include <asm/arch/sys_proto.h>
 #ifdef CONFIG_MMC
-#include "prcmu-fw.h"
+#include <asm/arch/prcmu.h>
 #include "../../../drivers/mmc/arm_pl180_mmci.h"
 #endif