From: Vadim Bendebury <vben...@chromium.org>
Add a common library for obtaining access to the Chrome OS EC. This is
used by boards which need to talk to the EC.
Reviewed-by: Vadim Bendebury <vben...@google.com>
Tested-by: Vadim Bendebury <vben...@google.com>
Signed-off-by: Vadim Bendebury <vben...@chromium.org>
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v2: None
board/samsung/common/board.c | 29 +++---------------------
board/samsung/smdk5250/exynos5-dt.c | 1 -
common/Makefile | 1 +
common/cros_ec.c | 44 +++++++++++++++++++++++++++++++++++++
include/cros_ec.h | 18 +++++++++++++++
5 files changed, 66 insertions(+), 27 deletions(-)
create mode 100644 common/cros_ec.c
diff --git a/board/samsung/common/board.c b/board/samsung/common/board.c
index cd873bc..3866495 100644
--- a/board/samsung/common/board.c
+++ b/board/samsung/common/board.c
@@ -26,13 +26,6 @@
DECLARE_GLOBAL_DATA_PTR;
-struct local_info {
- struct cros_ec_dev *cros_ec_dev; /* Pointer to cros_ec device */
- int cros_ec_err; /* Error for cros_ec, 0 if ok */
-};
-
-static struct local_info local;
-
#if defined CONFIG_EXYNOS_TMU
/* Boot Time Thermal Analysis for SoC temperature threshold breach */
static void boot_temp_check(void)
@@ -144,22 +137,6 @@ int board_early_init_f(void)
}
#endif
-struct cros_ec_dev *board_get_cros_ec_dev(void)
-{
- return local.cros_ec_dev;
-}
-
-#ifdef CONFIG_CROS_EC
-static int board_init_cros_ec_devices(const void *blob)
-{
- local.cros_ec_err = cros_ec_init(blob, &local.cros_ec_dev);
- if (local.cros_ec_err)
- return -1; /* Will report in board_late_init() */
-
- return 0;
-}
-#endif
-
#if defined(CONFIG_POWER)
#ifdef CONFIG_POWER_MAX77686
static int pmic_reg_update(struct pmic *p, int reg, uint regval)
@@ -384,12 +361,12 @@ int board_late_init(void)
{
stdio_print_current_devices();
- if (local.cros_ec_err) {
+ if (cros_ec_get_error()) {
/* Force console on */
gd->flags &= ~GD_FLG_SILENT;
printf("cros-ec communications failure %d\n",
- local.cros_ec_err);
+ cros_ec_get_error());
puts("\nPlease reset with Power+Refresh\n\n");
panic("Cannot init cros-ec device");
return -1;
@@ -401,7 +378,7 @@ int board_late_init(void)
int arch_early_init_r(void)
{
#ifdef CONFIG_CROS_EC
- if (board_init_cros_ec_devices(gd->fdt_blob)) {
+ if (cros_ec_board_init()) {
printf("%s: Failed to init EC\n", __func__);
return 0;
}
diff --git a/board/samsung/smdk5250/exynos5-dt.c
b/board/samsung/smdk5250/exynos5-dt.c
index 5fb8664..c83b034 100644
--- a/board/samsung/smdk5250/exynos5-dt.c
+++ b/board/samsung/smdk5250/exynos5-dt.c
@@ -5,7 +5,6 @@
*/
#include <common.h>
-#include <cros_ec.h>
#include <fdtdec.h>
#include <asm/io.h>
#include <errno.h>
diff --git a/common/Makefile b/common/Makefile
index 6652ad4..b8dee73 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -229,6 +229,7 @@ obj-$(SPD) += ddr_spd.o
obj-$(CONFIG_HWCONFIG) += hwconfig.o
obj-$(CONFIG_BOUNCE_BUFFER) += bouncebuf.o
obj-y += console.o
+obj-$(CONFIG_CROS_EC) += cros_ec.o
obj-y += dlmalloc.o
obj-y += image.o
obj-$(CONFIG_OF_LIBFDT) += image-fdt.o
diff --git a/common/cros_ec.c b/common/cros_ec.c
new file mode 100644
index 0000000..b8ce1b5
--- /dev/null
+++ b/common/cros_ec.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ */
+
+#include <common.h>
+#include <cros_ec.h>
+DECLARE_GLOBAL_DATA_PTR;
+
+struct local_info {
+ struct cros_ec_dev *cros_ec_dev; /* Pointer to cros_ec device */
+ int cros_ec_err; /* Error for cros_ec, 0 if ok */
+};
+
+static struct local_info local;
+
+struct cros_ec_dev *board_get_cros_ec_dev(void)
+{
+ return local.cros_ec_dev;
+}
+
+static int board_init_cros_ec_devices(const void *blob)
+{
+ local.cros_ec_err = cros_ec_init(blob, &local.cros_ec_dev);
+ if (local.cros_ec_err)
+ return -1; /* Will report in board_late_init() */
+
+ return 0;
+}
+
+int cros_ec_board_init(void)
+{
+ return board_init_cros_ec_devices(gd->fdt_blob);
+}
+
+int cros_ec_get_error(void)
+{
+ return local.cros_ec_err;
+}
diff --git a/include/cros_ec.h b/include/cros_ec.h
index 1e89f29..22eae90 100644
--- a/include/cros_ec.h
+++ b/include/cros_ec.h
@@ -431,4 +431,22 @@ int cros_ec_set_ldo(struct cros_ec_dev *dev, uint8_t
index, uint8_t state);
* @return 0 if ok, -1 on error
*/
int cros_ec_get_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t *state);
+
+/**
+ * Initialize the Chrome OS EC at board initialization time.
+ *
+ * @return 0 if ok, -ve on error
+ */
+int cros_ec_board_init(void);
+
+/**
+ * Get access to the error reported when cros_ec_board_init() was called
+ *
+ * This permits delayed reporting of the EC error if it failed during
+ * early init.
+ *
+ * @return error (0 if there was no error, -ve if there was an error)
+ */
+int cros_ec_get_error(void);
+
#endif
--
1.9.0.279.gdc9e3eb
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