UPSTREAM: soc/marvell/mvmap2315: Add gpio driver

Testing: booted successfully.

BUG=None
BRANCH=None
TEST=None

Signed-off-by: Hakim Giydan <hgiydan@marvell.com>
Reviewed-on: https://review.coreboot.org/15508
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

Change-Id: I89dee1bbf8b68460897f64bf673b328533e70cd4
Reviewed-on: https://chromium-review.googlesource.com/384979
Commit-Ready: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/marvell/mvmap2315/Makefile.inc

@@ -19,6 +19,7 @@ bootblock-y += bootblock.c
 bootblock-y += clock.c
 bootblock-y += fiq.S
 bootblock-y += gic.c
+bootblock-y += gpio.c
 bootblock-y += media.c
 bootblock-y += pinmux.c
 bootblock-y += reset.c
@@ -28,6 +29,7 @@ bootblock-y += uart.c
 
 ramstage-y += cbmem.c
 ramstage-y += media.c
+ramstage-y += gpio.c
 ramstage-y += ramstage_entry.S
 ramstage-y += reset.c
 ramstage-y += soc.c
@@ -37,6 +39,7 @@ ramstage-y += uart.c
 
 romstage-y += cbmem.c
 romstage-y += clock.c
+romstage-y += gpio.c
 romstage-y += media.c
 romstage-y += mmu_operations.c
 romstage-y += reset.c

src/soc/marvell/mvmap2315/gpio.c

@@ -0,0 +1,71 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 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 <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <arch/io.h>
+#include <gpio.h>
+#include <soc/addressmap.h>
+#include <soc/gpio.h>
+#include <soc/pinmux.h>
+
+struct mvmap2315_gpio_regs *gpio_banks[] = {
+	(struct mvmap2315_gpio_regs *)MVMAP2315_GPIOF_BASE,
+	(struct mvmap2315_gpio_regs *)MVMAP2315_GPIOG_BASE,
+	(struct mvmap2315_gpio_regs *)MVMAP2315_GPIOH_BASE,
+};
+
+int gpio_get(gpio_t gpio)
+{
+	return (read32(&gpio_banks[gpio.bank]->plr) >> gpio.idx) & 0x1;
+}
+
+void gpio_set(gpio_t gpio, int value)
+{
+	if (value)
+		setbits_le32(&gpio_banks[gpio.bank]->psr, 1 << gpio.idx);
+	else
+		setbits_le32(&gpio_banks[gpio.bank]->pcr, 1 << gpio.idx);
+}
+
+void gpio_input_pulldown(gpio_t gpio)
+{
+	set_pinmux(PINMUX(GET_GPIO_PAD(gpio), 0, 1, 0, 0, PULLDOWN));
+	clrbits_le32(&gpio_banks[gpio.bank]->pdr, 1 << gpio.idx);
+}
+
+void gpio_input_pullup(gpio_t gpio)
+{
+	set_pinmux(PINMUX(GET_GPIO_PAD(gpio), 0, 1, 0, 0, PULLUP));
+	clrbits_le32(&gpio_banks[gpio.bank]->pdr, 1 << gpio.idx);
+}
+
+void gpio_input(gpio_t gpio)
+{
+	set_pinmux(PINMUX(GET_GPIO_PAD(gpio), 0, 1, 0, 0, PULLNONE));
+	clrbits_le32(&gpio_banks[gpio.bank]->pdr, 1 << gpio.idx);
+}
+
+void gpio_output(gpio_t gpio, int value)
+{
+	setbits_le32(&gpio_banks[gpio.bank]->pdr, 1 << gpio.idx);
+
+	if (value)
+		setbits_le32(&gpio_banks[gpio.bank]->psr, 1 << gpio.idx);
+	else
+		setbits_le32(&gpio_banks[gpio.bank]->pcr, 1 << gpio.idx);
+}

src/soc/marvell/mvmap2315/include/soc/addressmap.h

@@ -24,6 +24,9 @@
 
 #define MVMAP2315_PINMUX_BASE		0xE0140000
 #define MVMAP2315_TIMER0_BASE		0xE1020000
+#define MVMAP2315_GPIOF_BASE		0xE0142000
+#define MVMAP2315_GPIOG_BASE		0xE0142100
+#define MVMAP2315_GPIOH_BASE		0xE0142200
 
 #define	MVMAP2315_BCM_GICD_BASE		0xE0111000
 #define MVMAP2315_BCM_GICC_BASE		0xE0112000

src/soc/marvell/mvmap2315/include/soc/gpio.h

@@ -0,0 +1,99 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 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.
+ */
+
+#ifndef __SOC_MARVELL_MVMAP2315_GPIO_H__
+#define __SOC_MARVELL_MVMAP2315_GPIO_H__
+
+#include <stdint.h>
+
+#include <types.h>
+
+#define GPIO(b, i)		((gpio_t){.bank = GPIO_##b, .idx = i})
+#define GET_GPIO_PAD(gpio)	((gpio.bank * 32) + gpio.idx + 160)
+
+struct mvmap2315_gpio_regs {
+	u32 plr;
+	u32 pdr;
+	u32 psr;
+	u32 pcr;
+	u32 hripr;
+	u32 lfipr;
+	u32 isr;
+	u32 sdr;
+	u32 cdr;
+	u32 shripr;
+	u32 chripr;
+	u32 slfipr;
+	u32 clfipr;
+	u32 olr;
+	u32 dwer;
+	u32 imr;
+	u32 rev0;
+	u32 rev1;
+	u32 simr;
+	u32 cimr;
+	u32 iter0;
+	u32 iter1;
+	u32 iter2;
+	u32 iter3;
+	u32 iter4;
+	u32 iter5;
+	u32 iter6;
+	u32 iter7;
+	u32 iter8;
+	u32 iter9;
+	u32 iter10;
+	u32 iter11;
+	u32 iter12;
+	u32 iter13;
+	u32 iter14;
+	u32 iter15;
+	u32 iter16;
+	u32 iter17;
+	u32 iter18;
+	u32 iter19;
+	u32 iter20;
+	u32 iter21;
+	u32 iter22;
+	u32 iter23;
+};
+
+check_member(mvmap2315_gpio_regs, iter23, 0xac);
+
+typedef union {
+	u32 raw;
+	struct {
+		u16 port;
+		union {
+			struct {
+				u16 num : 5;
+				u16 reserved1 : 11;
+			};
+			struct {
+				u16 idx : 3;
+				u16 bank : 2;
+				u16 reserved2 : 11;
+			};
+		};
+	};
+} gpio_t;
+
+enum {
+	GPIO_F = 0,
+	GPIO_G = 1,
+	GPIO_H = 2,
+};
+
+#endif /* __SOC_MARVELL_MVMAP2315_GPIO_H__ */