Add support for the Lenovo PMH7 embedded controller

Lenovo PMH7 (Power Management Hardware Hub) is found in
most recent (starting with X60/T60 AFAIK) Lenovo/IBM Laptops.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Acked-by: Patrick Georgi <patrick.georgi@secunet.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6325 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

7 files changed, 77 insertions, 0 deletions

diff --git a/src/ec/Kconfig b/src/ec/Kconfig
index 9408f6bd9e..2a36a328e0 100644
--- a/src/ec/Kconfig
+++ b/src/ec/Kconfig
@@ -1 +1,2 @@
 source src/ec/acpi/Kconfig
+source src/ec/lenovo/Kconfig
diff --git a/src/ec/lenovo/Kconfig b/src/ec/lenovo/Kconfig
new file mode 100644
index 0000000000..b564b62b0b
--- /dev/null
+++ b/src/ec/lenovo/Kconfig
@@ -0,0 +1 @@
+source src/ec/lenovo/pmh7/Kconfig
diff --git a/src/ec/lenovo/Makefile.inc b/src/ec/lenovo/Makefile.inc
new file mode 100644
index 0000000000..f9a3feb4a1
--- /dev/null
+++ b/src/ec/lenovo/Makefile.inc
@@ -0,0 +1 @@
+subdirs-$(CONFIG_EC_LENOVO_PMH7) += pmh7
diff --git a/src/ec/lenovo/pmh7/Kconfig b/src/ec/lenovo/pmh7/Kconfig
new file mode 100644
index 0000000000..27815bc017
--- /dev/null
+++ b/src/ec/lenovo/pmh7/Kconfig
@@ -0,0 +1,2 @@
+config EC_LENOVO_PMH7
+	bool
diff --git a/src/ec/lenovo/pmh7/Makefile.inc b/src/ec/lenovo/pmh7/Makefile.inc
new file mode 100644
index 0000000000..4c891b25ab
--- /dev/null
+++ b/src/ec/lenovo/pmh7/Makefile.inc
@@ -0,0 +1 @@
+driver-y += pmh7.c
diff --git a/src/ec/lenovo/pmh7/pmh7.c b/src/ec/lenovo/pmh7/pmh7.c
new file mode 100644
index 0000000000..c9cf1925cf
--- /dev/null
+++ b/src/ec/lenovo/pmh7/pmh7.c
@@ -0,0 +1,56 @@
+#include <arch/io.h>
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pnp.h>
+#include <stdlib.h>
+
+#include "pmh7.h"
+
+void pmh7_register_set_bit(int reg, int bit)
+{
+	char val;
+
+	outb(reg, EC_LENOVO_PMH7_ADDR);
+	val = inb(EC_LENOVO_PMH7_DATA);
+	outb(reg, EC_LENOVO_PMH7_ADDR);
+	outb(val | (1 << bit), EC_LENOVO_PMH7_DATA);
+}
+
+void pmh7_register_clear_bit(int reg, int bit)
+{
+	char val;
+
+	outb(reg, EC_LENOVO_PMH7_ADDR);
+	val = inb(EC_LENOVO_PMH7_DATA);
+	outb(reg, EC_LENOVO_PMH7_ADDR);
+	outb(val &= ~(1 << bit), EC_LENOVO_PMH7_DATA);
+}
+
+char pmh7_register_read(int reg)
+{
+	outb(reg, EC_LENOVO_PMH7_ADDR);
+	return inb(EC_LENOVO_PMH7_DATA);
+}
+
+void pmh7_register_write(int reg, int val)
+{
+	outb(reg, EC_LENOVO_PMH7_ADDR);
+	outb(val, EC_LENOVO_PMH7_DATA);
+}
+
+static void enable_dev(device_t dev)
+{
+	struct resource *resource;
+	resource = new_resource(dev, EC_LENOVO_PMH7_INDEX);
+	resource->flags = IORESOURCE_IO | IORESOURCE_FIXED;
+	resource->base = EC_LENOVO_PMH7_BASE;
+	resource->size = 16;
+	resource->align = 5;
+	resource->gran = 5;
+
+}
+
+struct chip_operations ec_lenovo_pmh7_ops = {
+	CHIP_NAME("Lenovo Power Management Hardware Hub 7")
+	.enable_dev = enable_dev,
+};
diff --git a/src/ec/lenovo/pmh7/pmh7.h b/src/ec/lenovo/pmh7/pmh7.h
new file mode 100644
index 0000000000..2999ef6197
--- /dev/null
+++ b/src/ec/lenovo/pmh7/pmh7.h
@@ -0,0 +1,15 @@
+#ifndef EC_LENOVO_PMH7_H
+#define EC_LENOVO_PMH7_H
+
+#define EC_LENOVO_PMH7_INDEX 0x77
+
+#define EC_LENOVO_PMH7_BASE 0x15e0
+#define EC_LENOVO_PMH7_ADDR (EC_LENOVO_PMH7_BASE + 0x0c)
+#define EC_LENOVO_PMH7_DATA (EC_LENOVO_PMH7_BASE + 0x0e)
+
+void pmh7_register_set_bit(int reg, int bit);
+void pmh7_register_clear_bit(int reg, int bit);
+char pmh7_register_read(int reg);
+void pmh7_register_write(int reg, int val);
+
+#endif