1 files changed, 168 insertions, 0 deletions
diff --git a/src/gfx/gfx_i2c.c b/src/gfx/gfx_i2c.c
new file mode 100644
index 0000000..7a3ad42
--- /dev/null
+++ b/src/gfx/gfx_i2c.c
@@ -0,0 +1,168 @@
+/* Copyright (c) 2005 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Neither the name of the Advanced Micro Devices, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ * */
+
+/*
+ * This file contains routines to write to and read from the I2C bus.
+ * */
+
+/* INCLUDE ROUTINES FOR ACCESS.BUS, IF SPECIFIED */
+/* This is for SC1200 systems. */
+
+#if GFX_I2C_ACCESS
+#include "i2c_acc.c"
+#endif
+
+/* INCLUDE ROUTINES FOR CS5530 GPIOs, IF SPECIFIED */
+/* This is for GXLV systems that use GPIOs on the CS5530 for I2C. */
+
+#if GFX_I2C_GPIO
+#include "i2c_gpio.c"
+#endif
+
+/* WRAPPERS IF DYNAMIC SELECTION */
+/* Extra layer to call either ACCESS.bus or GPIO routines. */
+
+#if GFX_I2C_DYNAMIC
+
+/*---------------------------------------------------------------------------
+ * gfx_i2c_reset
+ *---------------------------------------------------------------------------
+ */
+int
+gfx_i2c_reset(unsigned char busnum, short adr, char freq)
+{
+    int status = GFX_STATUS_UNSUPPORTED;
+
+#if GFX_I2C_ACCESS
+    if (gfx_i2c_type & GFX_I2C_TYPE_ACCESS)
+        status = acc_i2c_reset(busnum, adr, freq);
+#endif
+#if GFX_I2C_GPIO
+    if (gfx_i2c_type & GFX_I2C_TYPE_GPIO)
+        status = gpio_i2c_reset(busnum, adr, freq);
+#endif
+    return (status);
+}
+
+/*---------------------------------------------------------------------------
+ * gfx_i2c_select_gpio
+ *---------------------------------------------------------------------------
+ */
+int
+gfx_i2c_select_gpio(int clock, int data)
+{
+#if GFX_I2C_ACCESS
+    if (gfx_i2c_type & GFX_I2C_TYPE_ACCESS)
+        acc_i2c_select_gpio(clock, data);
+#endif
+#if GFX_I2C_GPIO
+    if (gfx_i2c_type & GFX_I2C_TYPE_GPIO)
+        gpio_i2c_select_gpio(clock, data);
+#endif
+    return (0);
+}
+
+/*---------------------------------------------------------------------------
+ * gfx_i2c_write
+ *---------------------------------------------------------------------------
+ */
+int
+gfx_i2c_write(unsigned char busnum, unsigned char chipadr,
+    unsigned char subadr, unsigned char bytes, unsigned char *data)
+{
+    int status = -1;
+
+#if GFX_I2C_ACCESS
+    if (gfx_i2c_type & GFX_I2C_TYPE_ACCESS)
+        status = acc_i2c_write(busnum, chipadr, subadr, bytes, data);
+#endif
+#if GFX_I2C_GPIO
+    if (gfx_i2c_type & GFX_I2C_TYPE_GPIO)
+        status = gpio_i2c_write(busnum, chipadr, subadr, bytes, data);
+#endif
+    return (status);
+}
+
+/*---------------------------------------------------------------------------
+ * gfx_i2c_read
+ *---------------------------------------------------------------------------
+ */
+int
+gfx_i2c_read(unsigned char busnum, unsigned char chipadr,
+    unsigned char subadr, unsigned char bytes, unsigned char *data)
+{
+    int status = -1;
+
+#if GFX_I2C_ACCESS
+    if (gfx_i2c_type & GFX_I2C_TYPE_ACCESS)
+        status = acc_i2c_read(busnum, chipadr, subadr, bytes, data);
+#endif
+#if GFX_I2C_GPIO
+    if (gfx_i2c_type & GFX_I2C_TYPE_GPIO)
+        status = gpio_i2c_read(busnum, chipadr, subadr, bytes, data);
+#endif
+    return (status);
+}
+
+/*---------------------------------------------------------------------------
+ * gfx_i2c_init
+ *---------------------------------------------------------------------------
+ */
+int
+gfx_i2c_init(void)
+{
+    int status = -1;
+
+#if GFX_I2C_ACCESS
+    if (gfx_i2c_type & GFX_I2C_TYPE_ACCESS)
+        status = acc_i2c_init();
+#endif
+#if GFX_I2C_GPIO
+    if (gfx_i2c_type & GFX_I2C_TYPE_GPIO)
+        status = gpio_i2c_init();
+#endif
+    return (status);
+}
+
+/*---------------------------------------------------------------------------
+ * gfx_i2c_cleanup
+ *---------------------------------------------------------------------------
+ */
+void
+gfx_i2c_cleanup(void)
+{
+#if GFX_I2C_ACCESS
+    if (gfx_i2c_type & GFX_I2C_TYPE_ACCESS)
+        acc_i2c_cleanup();
+#endif
+#if GFX_I2C_GPIO
+    if (gfx_i2c_type & GFX_I2C_TYPE_GPIO)
+        gpio_i2c_cleanup();
+#endif
+}
+
+#endif /* GFX_I2C_DYNAMIC */
+
+/* END OF FILE */