Initial platform port for MediaTek mt8173
- Boot up 4 cores.
- Add a generic UART driver.
- Add generic CPU helper functions
- Supoort suspend
- Add system_off & system_reset implementation
- Add crash console reporting implementation
- Add get_sys_suspend_power_state() for PSCI 1.0 SYSTEM_SUSPEND
- Add Mediatek SIP runtime service
- Add delay timer platform implementation
Change-Id: I44138249f115ee10b9cbd26fdbc2dd3af04d825f
diff --git a/plat/mediatek/mt8173/drivers/gpio/gpio.c b/plat/mediatek/mt8173/drivers/gpio/gpio.c
new file mode 100644
index 0000000..20473b9
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/gpio/gpio.c
@@ -0,0 +1,198 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <debug.h>
+#include <gpio.h>
+#include <mmio.h>
+#include <mt8173_def.h>
+#include <pmic_wrap_init.h>
+
+enum {
+ MAX_GPIO_REG_BITS = 16,
+};
+
+struct mt_gpio_obj {
+ struct gpio_regs *reg;
+};
+
+static struct mt_gpio_obj gpio_dat = {
+ .reg = (struct gpio_regs *)(GPIO_BASE),
+};
+
+static struct mt_gpio_obj *gpio_obj = &gpio_dat;
+
+struct mt_gpioext_obj {
+ struct gpioext_regs *reg;
+};
+
+static struct mt_gpioext_obj gpioext_dat = {
+ .reg = (struct gpioext_regs *)(GPIOEXT_BASE),
+};
+
+static struct mt_gpioext_obj *gpioext_obj = &gpioext_dat;
+
+static inline struct mt_gpio_obj *mt_get_gpio_obj(void)
+{
+ return gpio_obj;
+}
+
+static inline struct mt_gpioext_obj *mt_get_gpioext_obj(void)
+{
+ return gpioext_obj;
+}
+
+enum {
+ GPIO_PRO_DIR = 0,
+ GPIO_PRO_DOUT,
+ GPIO_PRO_DIN,
+ GPIO_PRO_PULLEN,
+ GPIO_PRO_PULLSEL,
+ GPIO_PRO_MODE,
+ GPIO_PRO_MAX,
+};
+
+static inline int32_t gpioext_write(uint16_t *addr, int64_t data)
+{
+ return pwrap_write((uint32_t)(uintptr_t)addr, data);
+}
+
+static inline int32_t gpioext_set_bits(uint32_t bit, uint16_t *reg)
+{
+ return gpioext_write(reg, bit);
+}
+
+static int32_t mt_set_gpio_chip(uint32_t pin, uint32_t property, uint32_t val)
+{
+ uint32_t pos = 0;
+ uint32_t bit = 0;
+ struct mt_gpio_obj *obj = mt_get_gpio_obj();
+ uint16_t *reg;
+ uint32_t data = 0;
+
+ if (!obj)
+ return -ERACCESS;
+
+ if (pin >= GPIO_EXTEND_START)
+ return -ERINVAL;
+
+ if (property >= GPIO_PRO_MAX)
+ return -ERINVAL;
+
+ pos = pin / MAX_GPIO_REG_BITS;
+ bit = pin % MAX_GPIO_REG_BITS;
+ data = 1L << bit;
+
+ switch (property) {
+ case GPIO_PRO_DIR:
+ if (val == GPIO_DIR_IN)
+ reg = &obj->reg->dir[pos].rst;
+ else
+ reg = &obj->reg->dir[pos].set;
+ break;
+ case GPIO_PRO_DOUT:
+ if (val == GPIO_OUT_ZERO)
+ reg = &obj->reg->dout[pos].rst;
+ else
+ reg = &obj->reg->dout[pos].set;
+ break;
+ default:
+ return -ERINVAL;
+ }
+
+ mmio_write_16((uintptr_t)reg, data);
+
+ return RSUCCESS;
+}
+
+static int32_t mt_set_gpio_ext(uint32_t pin, uint32_t property, uint32_t val)
+{
+ uint32_t pos = 0;
+ uint32_t bit = 0;
+ struct mt_gpioext_obj *obj = mt_get_gpioext_obj();
+ uint16_t *reg;
+ uint32_t data = 0;
+ int ret = 0;
+
+ if (!obj)
+ return -ERACCESS;
+
+ if (pin >= MAX_GPIO_PIN)
+ return -ERINVAL;
+
+ if (property >= GPIO_PRO_MAX)
+ return -ERINVAL;
+
+ pin -= GPIO_EXTEND_START;
+ pos = pin / MAX_GPIO_REG_BITS;
+ bit = pin % MAX_GPIO_REG_BITS;
+
+ switch (property) {
+ case GPIO_PRO_DIR:
+ if (val == GPIO_DIR_IN)
+ reg = &obj->reg->dir[pos].rst;
+ else
+ reg = &obj->reg->dir[pos].set;
+ break;
+ case GPIO_PRO_DOUT:
+ if (val == GPIO_OUT_ZERO)
+ reg = &obj->reg->dout[pos].rst;
+ else
+ reg = &obj->reg->dout[pos].set;
+ break;
+ default:
+ return -ERINVAL;
+ }
+ data = (1L << bit);
+ ret = gpioext_set_bits(data, reg);
+
+ return ret ? -ERWRAPPER : RSUCCESS;
+}
+
+static void mt_gpio_pin_decrypt(uint32_t *cipher)
+{
+ if ((*cipher & (0x80000000)) == 0)
+ INFO("Pin %u decrypt warning!\n", *cipher);
+ *cipher &= ~(0x80000000);
+}
+
+int32_t mt_set_gpio_out(uint32_t pin, uint32_t output)
+{
+ uint32_t gp = GPIO_PRO_DOUT;
+
+ mt_gpio_pin_decrypt(&pin);
+
+ return (pin >= GPIO_EXTEND_START) ?
+ mt_set_gpio_ext(pin, gp, output) :
+ mt_set_gpio_chip(pin, gp, output);
+}
+
+void gpio_set(uint32_t gpio, int32_t value)
+{
+ mt_set_gpio_out(gpio, value);
+}