1 files changed, 160 insertions, 0 deletions

diff --git a/firmware/target/arm/s5l8700/uart-s5l8701.c b/firmware/target/arm/s5l8700/uart-s5l8701.c
new file mode 100644
index 0000000000..00c9322e47
--- /dev/null
+++ b/firmware/target/arm/s5l8700/uart-s5l8701.c
@@ -0,0 +1,160 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2014 by Cástor Muñoz
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "config.h"
+#include "system.h"
+
+#include "s5l8700.h"
+#include "uc870x.h"
+
+
+/*
+ * s5l8701 UC870X HW: 3 UARTC, 1 port per UARTC
+ */
+static struct uartc_port *uartc0_port_l[UARTC0_N_PORTS];
+const struct uartc s5l8701_uartc0 =
+{
+    .id       = 0,
+    .baddr    = UARTC0_BASE_ADDR,
+    .port_off = UARTC0_PORT_OFFSET,
+    .n_ports  = UARTC0_N_PORTS,
+    .port_l   = uartc0_port_l,
+};
+
+/* UARTC1,2 not used on Nano2G */
+#ifndef IPOD_NANO2G
+static struct uartc_port *uartc1_port_l[UARTC1_N_PORTS];
+const struct uartc s5l8701_uartc1 =
+{
+    .id       = 1,
+    .baddr    = UARTC1_BASE_ADDR,
+    .port_off = UARTC1_PORT_OFFSET,
+    .n_ports  = UARTC1_N_PORTS,
+    .port_l   = uartc1_port_l,
+};
+
+static struct uartc_port *uartc2_port_l[UARTC2_N_PORTS];
+const struct uartc s5l8701_uartc2 =
+{
+    .id       = 2,
+    .baddr    = UARTC2_BASE_ADDR,
+    .port_off = UARTC2_PORT_OFFSET,
+    .n_ports  = UARTC2_N_PORTS,
+    .port_l   = uartc2_port_l,
+};
+#endif
+
+static uint8_t clockgate_uartc[S5L8701_N_UARTC] = {
+    CLOCKGATE_UARTC0, CLOCKGATE_UARTC1, CLOCKGATE_UARTC2 };
+
+static int intmsk_uart[S5L8701_N_UARTC] = {
+    INTMSK_UART0, INTMSK_UART1, INTMSK_UART2 };
+
+/*
+ * Device level functions specific to S5L8701
+ */
+void uart_target_enable_gpio(int uart_id, int port_id)
+{
+    (void) port_id;
+    switch (uart_id) {
+        /* configure UARTx Tx/Rx GPIO ports */
+        case 0:
+            PCON1 = (PCON1 & 0xffffff00) | 0x00000044;
+            break;
+        case 1:
+        case 2:
+            /* unknown */
+        default:
+            break;
+    }
+}
+
+void uart_target_disable_gpio(int uart_id, int port_id)
+{
+    (void) port_id;
+    switch (uart_id) {
+        /* configure minimal power consumption */
+        case 0:
+            PCON1 = (PCON1 & 0xffffff00) | 0x00000011;
+            break;
+        case 1:
+        case 2:
+        default:
+            break;
+    }
+}
+
+void uart_target_enable_irq(int uart_id, int port_id)
+{
+    (void) port_id;
+    INTMSK |= intmsk_uart[uart_id];
+}
+
+void uart_target_disable_irq(int uart_id, int port_id)
+{
+    (void) port_id;
+    INTMSK &= ~intmsk_uart[uart_id];
+}
+
+void uart_target_clear_irq(int uart_id, int port_id)
+{
+    (void) port_id;
+    SRCPND |= intmsk_uart[uart_id];
+}
+
+void uart_target_enable_clocks(int uart_id)
+{
+    PWRCON &= ~(1 << clockgate_uartc[uart_id]);
+}
+
+void uart_target_disable_clocks(int uart_id)
+{
+    PWRCON |= (1 << clockgate_uartc[uart_id]);
+}
+
+/*
+ * ISRs
+ */
+void ICODE_ATTR INT_UART0(void)
+{
+    uartc_callback(&s5l8701_uartc0, 0);
+}
+
+/* UARTC1,2 not used on Nano2G */
+#ifndef IPOD_NANO2G
+void ICODE_ATTR INT_UART1(void)
+{
+    uartc_callback(&s5l8701_uartc1, 0);
+}
+
+void ICODE_ATTR INT_UART2(void)
+{
+    uartc_callback(&s5l8701_uartc2, 0);
+}
+#endif
+
+/* Main init */
+void uart_init(void)
+{
+    uartc_open(&s5l8701_uartc0);
+}