把龙芯1c的SPI接口改为RTT统一的SPI接口

4 files changed, 284 insertions, 67 deletions

diff --git a/bsp/ls1cdev/drivers/drv_spi.c b/bsp/ls1cdev/drivers/drv_spi.c
new file mode 100644
index 0000000000..b26de557db
--- /dev/null
+++ b/bsp/ls1cdev/drivers/drv_spi.c
@@ -0,0 +1,229 @@
+/*
+ * File      : drv_spi.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
+ *
+ *  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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-11-02     ����       first version
+ */
+
+#include <rtthread.h>
+#include <drivers/spi.h>
+#include "drv_spi.h"
+
+
+//#define DEBUG
+
+#ifdef DEBUG
+#define DEBUG_PRINTF(...)           rt_kprintf(__VA_ARGS__)
+#else
+#define DEBUG_PRINTF(...)
+#endif
+
+
+static rt_err_t configure(struct rt_spi_device *device, struct rt_spi_configuration *configuration);
+static rt_uint32_t xfer(struct rt_spi_device *device, struct rt_spi_message *message);
+
+
+static struct rt_spi_ops ls1c_spi_ops = 
+{
+    .configure  = configure,
+    .xfer       = xfer
+};
+
+
+static rt_err_t configure(struct rt_spi_device *device, 
+                          struct rt_spi_configuration *configuration)
+{
+    struct rt_spi_bus *spi_bus = NULL;
+    struct ls1c_spi *ls1c_spi = NULL;
+    unsigned char SPIx = 0;
+    void *spi_base = NULL;
+    unsigned char cpol = 0;
+    unsigned char cpha = 0;
+    unsigned char val = 0;
+
+    RT_ASSERT(NULL != device);
+    RT_ASSERT(NULL != configuration);
+
+    spi_bus = device->bus;
+    ls1c_spi = (struct ls1c_spi *)spi_bus->parent.user_data;
+    SPIx = ls1c_spi->SPIx;
+    spi_base = ls1c_spi_get_base(SPIx);
+
+    {
+        // ʹ��SPI��������masterģʽ���ر��ж�
+        reg_write_8(0x53, spi_base + LS1C_SPI_SPCR_OFFSET);
+
+        // ���״̬�Ĵ���
+        reg_write_8(0xc0, spi_base + LS1C_SPI_SPSR_OFFSET);
+
+        // 1�ֽڲ����жϣ�����(��)�뷢��(д)ʱ��ͬʱ
+        reg_write_8(0x03, spi_base + LS1C_SPI_SPER_OFFSET);
+
+        // �ر�SPI flash
+        val = reg_read_8(spi_base + LS1C_SPI_SFC_PARAM_OFFSET);
+        val &= 0xfe;
+        reg_write_8(val, spi_base + LS1C_SPI_SFC_PARAM_OFFSET);
+
+        // spi flashʱ����ƼĴ���
+        reg_write_8(0x05, spi_base + LS1C_SPI_SFC_TIMING_OFFSET);
+    }
+    
+    // baudrate
+    ls1c_spi_set_clock(spi_base, configuration->max_hz);
+
+    // ����ͨ��ģʽ(ʱ�Ӽ��Ժ���λ)
+    if (configuration->mode & RT_SPI_CPOL)      // cpol
+    {
+        cpol = SPI_CPOL_1;
+    }
+    else
+    {
+        cpol = SPI_CPOL_0;
+    }
+    if (configuration->mode & RT_SPI_CPHA)      // cpha
+    {
+        cpha = SPI_CPHA_1;
+    }
+    else
+    {
+        cpha = SPI_CPHA_0;
+    }
+    ls1c_spi_set_mode(spi_base, cpol, cpha);
+
+    DEBUG_PRINTF("ls1c spi%d configuration\n", SPIx);
+
+    return RT_EOK;
+}
+
+
+static rt_uint32_t xfer(struct rt_spi_device *device, 
+                        struct rt_spi_message *message)
+{
+    struct rt_spi_bus *spi_bus = NULL;
+    struct ls1c_spi *ls1c_spi = NULL;
+    void *spi_base = NULL;
+    unsigned char SPIx = 0;
+    struct ls1c_spi_cs *ls1c_spi_cs = NULL;
+    unsigned char cs = 0;
+    rt_uint32_t size = 0;
+    const rt_uint8_t *send_ptr = NULL;
+    rt_uint8_t *recv_ptr = NULL;
+    rt_uint8_t data = 0;
+
+    RT_ASSERT(NULL != device);
+    RT_ASSERT(NULL != message);
+
+    spi_bus = device->bus;
+    ls1c_spi = spi_bus->parent.user_data;
+    SPIx = ls1c_spi->SPIx;
+    spi_base = ls1c_spi_get_base(SPIx);
+    ls1c_spi_cs = device->parent.user_data;
+    cs = ls1c_spi_cs->cs;
+    size = message->length;
+
+    DEBUG_PRINTF("[%s] SPIx=%d, cs=%d\n", __FUNCTION__, SPIx, cs);
+
+    // take cs
+    if (message->cs_take)
+    {
+        ls1c_spi_set_cs(spi_base, cs, 0);
+    }
+
+    // �շ�����
+    send_ptr = message->send_buf;
+    recv_ptr = message->recv_buf;
+    while (size--)
+    {
+        data = 0xFF;
+        if (NULL != send_ptr)
+        {
+            data = *send_ptr++;
+        }
+
+        if (NULL != recv_ptr)
+        {
+            *recv_ptr++ = ls1c_spi_txrx_byte(spi_base, data);
+        }
+        else
+        {
+            ls1c_spi_txrx_byte(spi_base, data);
+        }
+    }
+
+    // release cs
+    if (message->cs_release)
+    {
+        ls1c_spi_set_cs(spi_base, cs, 1);
+    }
+
+    return message->length;
+}
+
+
+#ifdef RT_USING_SPI0
+struct ls1c_spi ls1c_spi0 = 
+{
+    .SPIx = LS1C_SPI_0,
+};
+
+static struct rt_spi_bus spi0_bus;
+#endif
+
+
+#ifdef RT_USING_SPI1
+struct ls1c_spi ls1c_spi1 = 
+{
+    .SPIx = LS1C_SPI_1,
+};
+
+static struct rt_spi_bus spi1_bus;
+#endif
+
+
+/*
+ * ��ʼ����ע����о1c��spi����
+ * @SPI SPI���ߣ�����LS1C_SPI_0�� LS1C_SPI_1
+ * @spi_bus_name ��������
+ * @ret 
+ */
+rt_err_t ls1c_spi_bus_register(rt_uint8_t SPI, const char *spi_bus_name)
+{
+    struct rt_spi_bus *spi_bus = NULL;
+
+#ifdef RT_USING_SPI0
+    if (LS1C_SPI_0 == SPI)
+    {
+        spi_bus = &spi0_bus;
+        spi_bus->parent.user_data = &ls1c_spi0;
+    }
+#endif
+
+#ifdef RT_USING_SPI1
+    if (LS1C_SPI_1 == SPI)
+    {
+        spi_bus = &spi1_bus;
+        spi_bus->parent.user_data = &ls1c_spi1;
+    }
+#endif
+
+    return rt_spi_bus_register(spi_bus, spi_bus_name, &ls1c_spi_ops);
+}
+
+
diff --git a/bsp/ls1cdev/drivers/drv_spi.h b/bsp/ls1cdev/drivers/drv_spi.h
new file mode 100644
index 0000000000..94fbb58097
--- /dev/null
+++ b/bsp/ls1cdev/drivers/drv_spi.h
@@ -0,0 +1,55 @@
+/*
+ * File      : drv_spi.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
+ *
+ *  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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-11-02     ����       first version
+ */
+
+#ifndef LS1C_DRV_SPI_H
+#define LS1C_DRV_SPI_H
+
+
+#include "../libraries/ls1c_spi.h"
+
+
+struct ls1c_spi
+{
+    unsigned char SPIx;     // LS1C_SPI_0 or LS1C_SPI_1
+};
+
+
+struct ls1c_spi_cs
+{
+    unsigned char cs;       // LS1C_SPI_CS_0, LS1C_SPI_CS_1, LS1C_SPI_CS_2 or LS1C_SPI_CS_3
+};
+
+
+
+/*
+ * ��ʼ����ע����о1c��spi����
+ * @SPI SPI���ߣ�����LS1C_SPI_0�� LS1C_SPI_1
+ * @spi_bus_name ��������
+ * @ret 
+ */
+rt_err_t ls1c_spi_bus_register(rt_uint8_t SPI, const char *spi_bus_name);
+
+
+#endif
+
diff --git a/bsp/ls1cdev/drivers/led.c b/bsp/ls1cdev/drivers/led.c
deleted file mode 100644
index 6f73ac9892..0000000000
--- a/bsp/ls1cdev/drivers/led.c
+++ /dev/null
@@ -1,40 +0,0 @@
-// led�ӿ�
-// ʹ�õ͵�ƽ����led���ߵ�ƽϨ��led
-
-
-#include "ls1c_gpio.h"
-
-
-// ��ʼ��led
-// @led_gpio led����gpio����
-void led_init(unsigned int led_gpio)
-{
-    gpio_init(led_gpio, gpio_mode_output);
-    gpio_set(led_gpio, gpio_level_high);        // ָʾ��Ĭ��Ϩ��
-
-    return ;
-}
-
-
-// ����led
-// @led_gpio led����gpio����
-void led_on(unsigned int led_gpio)
-{
-    gpio_set(led_gpio, gpio_level_low);
-
-    return ;
-}
-
-
-// Ϩ��led
-// @led_gpio
-void led_off(unsigned int led_gpio)
-{
-    gpio_set(led_gpio, gpio_level_high);
-
-    return ;
-}
-
-
-
-
diff --git a/bsp/ls1cdev/drivers/led.h b/bsp/ls1cdev/drivers/led.h
deleted file mode 100644
index 76ea905371..0000000000
--- a/bsp/ls1cdev/drivers/led.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// led�ӿ�
-// ʹ�õ͵�ƽ����led���ߵ�ƽϨ��led
-
-#ifndef __OPENLOONGSON_LED_H
-#define __OPENLOONGSON_LED_H
-
-
-// ��ʼ��led
-// @led_gpio led����gpio����
-void led_init(unsigned int led_gpio);
-
-
-// ����led
-// @led_gpio led����gpio����
-void led_on(unsigned int led_gpio);
-
-
-// Ϩ��led
-// @led_gpio
-void led_off(unsigned int led_gpio);
-
-
-
-
-
-#endif
-