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authorTony Lindgren <tony@atomide.com>2009-12-11 16:16:32 -0800
committerTony Lindgren <tony@atomide.com>2009-12-11 16:16:32 -0800
commitb63128e81214cc2db2995d690438055c26d213a5 (patch)
tree9b319655d1456fd9f2b8a1a25b7b70047e6fb0ad /arch
parent4b715efccf9547c0d7fe864277526fee3d9b6bba (diff)
omap: Split i2c platform init for mach-omap1 and mach-omap2
Otherwise we cannot limit new mux code to mach-omap2. The same signal names should eventually work for other omaps under mach-omap2. Note that these pins don't need to be OMAP_PIN_INPUT_PULLUP, just OMAP_PIN_INPUT is enough. Cc: Jarkko Nikula <jhnikula@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-omap1/Makefile3
-rw-r--r--arch/arm/mach-omap1/i2c.c33
-rw-r--r--arch/arm/mach-omap2/Makefile3
-rw-r--r--arch/arm/mach-omap2/i2c.c56
-rw-r--r--arch/arm/plat-omap/i2c.c44
-rw-r--r--arch/arm/plat-omap/include/plat/common.h14
-rw-r--r--arch/arm/plat-omap/include/plat/i2c.h39
7 files changed, 137 insertions, 55 deletions
diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile
index ceced8ffe85..191e0cf6ee9 100644
--- a/arch/arm/mach-omap1/Makefile
+++ b/arch/arm/mach-omap1/Makefile
@@ -18,6 +18,9 @@ obj-$(CONFIG_PM) += pm.o sleep.o
obj-$(CONFIG_OMAP_MBOX_FWK) += mailbox_mach.o
mailbox_mach-objs := mailbox.o
+i2c-omap-$(CONFIG_I2C_OMAP) := i2c.o
+obj-y += $(i2c-omap-m) $(i2c-omap-y)
+
led-y := leds.o
# Specific board support
diff --git a/arch/arm/mach-omap1/i2c.c b/arch/arm/mach-omap1/i2c.c
new file mode 100644
index 00000000000..bc9d12bc1c6
--- /dev/null
+++ b/arch/arm/mach-omap1/i2c.c
@@ -0,0 +1,33 @@
+/*
+ * Helper module for board specific I2C bus registration
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <plat/i2c.h>
+#include <plat/mux.h>
+
+int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
+ struct i2c_board_info const *info,
+ unsigned len)
+{
+ omap_cfg_reg(I2C_SDA);
+ omap_cfg_reg(I2C_SCL);
+
+ return omap_plat_register_i2c_bus(bus_id, clkrate, info, len);
+}
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 6e348e528f8..e30e335dc2c 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -64,6 +64,9 @@ iommu-$(CONFIG_ARCH_OMAP3) += omap3-iommu.o
obj-$(CONFIG_OMAP_IOMMU) += $(iommu-y)
+i2c-omap-$(CONFIG_I2C_OMAP) := i2c.o
+obj-y += $(i2c-omap-m) $(i2c-omap-y)
+
# Specific board support
obj-$(CONFIG_MACH_OMAP_GENERIC) += board-generic.o
obj-$(CONFIG_MACH_OMAP_H4) += board-h4.o
diff --git a/arch/arm/mach-omap2/i2c.c b/arch/arm/mach-omap2/i2c.c
new file mode 100644
index 00000000000..789ca8c02f0
--- /dev/null
+++ b/arch/arm/mach-omap2/i2c.c
@@ -0,0 +1,56 @@
+/*
+ * Helper module for board specific I2C bus registration
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <plat/cpu.h>
+#include <plat/i2c.h>
+#include <plat/mux.h>
+
+#include "mux.h"
+
+int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
+ struct i2c_board_info const *info,
+ unsigned len)
+{
+ if (cpu_is_omap24xx()) {
+ const int omap24xx_pins[][2] = {
+ { M19_24XX_I2C1_SCL, L15_24XX_I2C1_SDA },
+ { J15_24XX_I2C2_SCL, H19_24XX_I2C2_SDA },
+ };
+ int scl, sda;
+
+ scl = omap24xx_pins[bus_id - 1][0];
+ sda = omap24xx_pins[bus_id - 1][1];
+ omap_cfg_reg(sda);
+ omap_cfg_reg(scl);
+ }
+
+ /* First I2C bus is not muxable */
+ if (cpu_is_omap34xx() && bus_id > 1) {
+ char mux_name[sizeof("i2c2_scl.i2c2_scl")];
+
+ sprintf(mux_name, "i2c%i_scl.i2c%i_scl", bus_id, bus_id);
+ omap_mux_init_signal(mux_name, OMAP_PIN_INPUT);
+ sprintf(mux_name, "i2c%i_sda.i2c%i_sda", bus_id, bus_id);
+ omap_mux_init_signal(mux_name, OMAP_PIN_INPUT);
+ }
+
+ return omap_plat_register_i2c_bus(bus_id, clkrate, info, len);
+}
diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c
index c08362dbb8e..33fff4ef382 100644
--- a/arch/arm/plat-omap/i2c.c
+++ b/arch/arm/plat-omap/i2c.c
@@ -80,47 +80,8 @@ static struct platform_device omap_i2c_devices[] = {
#endif
};
-#if defined(CONFIG_ARCH_OMAP24XX)
-static const int omap24xx_pins[][2] = {
- { M19_24XX_I2C1_SCL, L15_24XX_I2C1_SDA },
- { J15_24XX_I2C2_SCL, H19_24XX_I2C2_SDA },
-};
-#else
-static const int omap24xx_pins[][2] = {};
-#endif
-#if defined(CONFIG_ARCH_OMAP34XX)
-static const int omap34xx_pins[][2] = {
- { K21_34XX_I2C1_SCL, J21_34XX_I2C1_SDA},
- { AF15_34XX_I2C2_SCL, AE15_34XX_I2C2_SDA},
- { AF14_34XX_I2C3_SCL, AG14_34XX_I2C3_SDA},
-};
-#else
-static const int omap34xx_pins[][2] = {};
-#endif
-
#define OMAP_I2C_CMDLINE_SETUP (BIT(31))
-static void __init omap_i2c_mux_pins(int bus)
-{
- int scl, sda;
-
- if (cpu_class_is_omap1()) {
- scl = I2C_SCL;
- sda = I2C_SDA;
- } else if (cpu_is_omap24xx()) {
- scl = omap24xx_pins[bus][0];
- sda = omap24xx_pins[bus][1];
- } else if (cpu_is_omap34xx()) {
- scl = omap34xx_pins[bus][0];
- sda = omap34xx_pins[bus][1];
- } else {
- return;
- }
-
- omap_cfg_reg(sda);
- omap_cfg_reg(scl);
-}
-
static int __init omap_i2c_nr_ports(void)
{
int ports = 0;
@@ -156,7 +117,6 @@ static int __init omap_i2c_add_bus(int bus_id)
res[1].start = irq;
}
- omap_i2c_mux_pins(bus_id - 1);
return platform_device_register(pdev);
}
@@ -209,7 +169,7 @@ out:
subsys_initcall(omap_register_i2c_bus_cmdline);
/**
- * omap_register_i2c_bus - register I2C bus with device descriptors
+ * omap_plat_register_i2c_bus - register I2C bus with device descriptors
* @bus_id: bus id counting from number 1
* @clkrate: clock rate of the bus in kHz
* @info: pointer into I2C device descriptor table or NULL
@@ -217,7 +177,7 @@ subsys_initcall(omap_register_i2c_bus_cmdline);
*
* Returns 0 on success or an error code.
*/
-int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
+int __init omap_plat_register_i2c_bus(int bus_id, u32 clkrate,
struct i2c_board_info const *info,
unsigned len)
{
diff --git a/arch/arm/plat-omap/include/plat/common.h b/arch/arm/plat-omap/include/plat/common.h
index 2f816fe3ae8..32c22272425 100644
--- a/arch/arm/plat-omap/include/plat/common.h
+++ b/arch/arm/plat-omap/include/plat/common.h
@@ -27,7 +27,7 @@
#ifndef __ARCH_ARM_MACH_OMAP_COMMON_H
#define __ARCH_ARM_MACH_OMAP_COMMON_H
-#include <linux/i2c.h>
+#include <plat/i2c.h>
struct sys_timer;
@@ -36,18 +36,6 @@ extern void __iomem *gic_cpu_base_addr;
extern void omap_map_common_io(void);
extern struct sys_timer omap_timer;
-#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
-extern int omap_register_i2c_bus(int bus_id, u32 clkrate,
- struct i2c_board_info const *info,
- unsigned len);
-#else
-static inline int omap_register_i2c_bus(int bus_id, u32 clkrate,
- struct i2c_board_info const *info,
- unsigned len)
-{
- return 0;
-}
-#endif
/* IO bases for various OMAP processors */
struct omap_globals {
diff --git a/arch/arm/plat-omap/include/plat/i2c.h b/arch/arm/plat-omap/include/plat/i2c.h
new file mode 100644
index 00000000000..585d9ca68b9
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/i2c.h
@@ -0,0 +1,39 @@
+/*
+ * Helper module for board specific I2C bus registration
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/i2c.h>
+
+#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
+extern int omap_register_i2c_bus(int bus_id, u32 clkrate,
+ struct i2c_board_info const *info,
+ unsigned len);
+#else
+static inline int omap_register_i2c_bus(int bus_id, u32 clkrate,
+ struct i2c_board_info const *info,
+ unsigned len)
+{
+ return 0;
+}
+#endif
+
+int omap_plat_register_i2c_bus(int bus_id, u32 clkrate,
+ struct i2c_board_info const *info,
+ unsigned len);