[coreboot-gerrit] Patch set updated for coreboot: soc/marvell/armada38x: Add gpio driver for armada38x
Patrick Georgi (pgeorgi@google.com)
gerrit at coreboot.org
Thu Jan 21 12:39:40 CET 2016
Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13112
-gerrit
commit 169ca9ffba56af6d4e9b815e1ff99e87e02b0a86
Author: Ruilin Hao <rlhao at marvell.com>
Date: Tue Nov 10 00:17:09 2015 -0800
soc/marvell/armada38x: Add gpio driver for armada38x
Port gpio driver from uboot to coreboot
BUG=chrome-os-partner:47462
TEST=None
BRANCH=tot
Change-Id: Ib6cfbb6e44cb642c7af937778076a51d405ff4a2
Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
Original-Commit-Id: 5cf94502faad96147d4a4adb42eb13edb64a6439
Original-Change-Id: Ia2e081a85347e2fc8bb365ca527ee2ee32af86f1
Original-Signed-off-by: Ruilin Hao <rlhao at marvell.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/313341
Original-Commit-Ready: Kan Yan <kyan at google.com>
Original-Tested-by: Kan Yan <kyan at google.com>
Original-Reviewed-by: Furquan Shaikh <furquan at chromium.org>
Original-Reviewed-by: Kan Yan <kyan at google.com>
Original-Reviewed-by: Yuji Sasaki <sasakiy at chromium.org>
---
src/soc/marvell/armada38x/Makefile.inc | 4 +
src/soc/marvell/armada38x/gpio.c | 113 +++++++++++++++++++++++++++
src/soc/marvell/armada38x/include/soc/gpio.h | 23 ++++++
3 files changed, 140 insertions(+)
diff --git a/src/soc/marvell/armada38x/Makefile.inc b/src/soc/marvell/armada38x/Makefile.inc
index 18f5491..bc72d10 100644
--- a/src/soc/marvell/armada38x/Makefile.inc
+++ b/src/soc/marvell/armada38x/Makefile.inc
@@ -3,6 +3,7 @@ ifeq ($(CONFIG_SOC_MARVELL_ARMADA38X),y)
bootblock-y += bootblock.c
bootblock-y += bootblock_asm.S
bootblock-y += spi.c
+bootblock-y += gpio.c
bootblock-y += monotonic_timer.c
ifeq ($(CONFIG_BOOTBLOCK_CONSOLE),y)
bootblock-$(CONFIG_DRIVERS_UART) += uart.c
@@ -11,13 +12,16 @@ endif
verstage-$(CONFIG_DRIVERS_UART) += uart.c
verstage-y += monotonic_timer.c
verstage-y += spi.c
+verstage-y += gpio.c
romstage-y += spi.c
+romstage-y += gpio.c
romstage-y += cbmem.c
romstage-y += monotonic_timer.c
romstage-$(CONFIG_DRIVERS_UART) += uart.c
ramstage-y += spi.c
+ramstage-y += gpio.c
ramstage-y += cbmem.c
ramstage-y += monotonic_timer.c
ramstage-y += soc.c
diff --git a/src/soc/marvell/armada38x/gpio.c b/src/soc/marvell/armada38x/gpio.c
new file mode 100644
index 0000000..1c5a4c7
--- /dev/null
+++ b/src/soc/marvell/armada38x/gpio.c
@@ -0,0 +1,113 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Marvell Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+#include <arch/io.h>
+#include <gpio.h>
+#include <soc/common.h>
+#include <console/console.h>
+
+#define MV_GPIO_MAX_NUM 59
+
+#define MV_GPP_IN 0xFFFFFFFF /* GPP input */
+#define MV_GPP_OUT 0 /* GPP output */
+
+#define MV_GPP_REGS_BASE(unit) (0x18100 + ((unit)*0x40))
+#define GPP_DATA_OUT_EN_REG(grp) (MV_GPP_REGS_BASE(grp) + 0x04)
+#define GPP_DATA_IN_REG(grp) (MV_GPP_REGS_BASE(grp) + 0x10)
+#define GPP_DATA_OUT_REG(grp) (MV_GPP_REGS_BASE(grp) + 0x00)
+
+static void gpp_reg_set(u32 group, u32 reg_offs, u32 mask, u32 value);
+static int mv_gpp_type_set(u32 group, u32 mask, u32 value);
+static u32 mv_gpp_value_get(u32 group, u32 mask);
+static int mv_gpp_value_set(u32 group, u32 mask, u32 value);
+
+void gpp_reg_set(u32 group, u32 reg_offs, u32 mask, u32 value)
+{
+ u32 gpp_data;
+
+ gpp_data = mrvl_reg_read(reg_offs);
+ gpp_data &= ~mask;
+ gpp_data |= (value & mask);
+ mrvl_reg_write(reg_offs, gpp_data);
+}
+
+int mv_gpp_type_set(u32 group, u32 mask, u32 value)
+{
+ gpp_reg_set(group, GPP_DATA_OUT_EN_REG(group), mask, value);
+ return MV_OK;
+}
+
+u32 mv_gpp_value_get(u32 group, u32 mask)
+{
+ u32 gpp_data;
+
+ gpp_data = mrvl_reg_read(GPP_DATA_IN_REG(group));
+ gpp_data &= mask;
+ return gpp_data;
+}
+
+int mv_gpp_value_set(u32 group, u32 mask, u32 value)
+{
+ u32 out_enable;
+
+ /* verify that the gpp pin is configured as output*/
+ /* Note that in the register out enabled -> bit = '0'.*/
+ out_enable = ~(mrvl_reg_read(GPP_DATA_OUT_EN_REG(group)));
+ if ((out_enable & mask) != mask) {
+ printk(BIOS_ERR,
+ "Mask and out_enable mismatch(mask:0x%x, out_enable:0x%x).\n",
+ mask, (out_enable & mask));
+ return MV_ERROR;
+ }
+ gpp_reg_set(group, GPP_DATA_OUT_REG(group), mask, value);
+ return MV_OK;
+}
+
+static inline int gpio_not_valid(gpio_t gpio)
+{
+ return (gpio > MV_GPIO_MAX_NUM);
+}
+
+int gpio_get(gpio_t gpio)
+{
+ u32 group = 0;
+ u32 gpp_data;
+
+ if (gpio_not_valid(gpio))
+ return MV_BAD_PARAM;
+ if (gpio >= 32) {
+ group = 1;
+ gpio -= 32;
+ }
+
+ mv_gpp_type_set(group, (1 << gpio), MV_GPP_IN & (1 << gpio));
+ gpp_data = mv_gpp_value_get(group, (1 << gpio));
+ return (gpp_data != 0);
+}
+
+void gpio_set(gpio_t gpio, int value)
+{
+ u32 group = 0;
+
+ if (gpio_not_valid(gpio))
+ return;
+ if (gpio >= 32) {
+ group = 1;
+ gpio -= 32;
+ }
+
+ mv_gpp_type_set(group, (1 << gpio), MV_GPP_OUT & (1 << gpio));
+ mv_gpp_value_set(group, (1 << gpio), (value ? (1 << gpio) : 0));
+}
diff --git a/src/soc/marvell/armada38x/include/soc/gpio.h b/src/soc/marvell/armada38x/include/soc/gpio.h
new file mode 100644
index 0000000..e3cd7c0
--- /dev/null
+++ b/src/soc/marvell/armada38x/include/soc/gpio.h
@@ -0,0 +1,23 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+#ifndef __SOC_MARVELL_ARMADA38X_GPIO_H_
+#define __SOC_MARVELL_ARMADA38X_GPIO_H_
+
+#include <types.h>
+
+typedef u32 gpio_t;
+
+#endif // __SOC_MARVELL_ARMADA38X_GPIO_H__
More information about the coreboot-gerrit
mailing list