implement SSP hooks

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3144 42af7a65-404d-4744-a932-0658087f49c3

configs/olimex-lpc1766stk/src/lpc1766stk_internal.h

@@ -158,20 +158,30 @@
 #define LPC1766STK_LEFT    (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN7)
 #define LPC1766STK_RIGHT   (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN8)
 
-/* LCD GPIO                         PIN  SIGNAL NAME
+/* Nokia LCD GPIO                   PIN  SIGNAL NAME
  * -------------------------------- ---- --------------
+ * P1[21]/MCABORT/PWM1[3]/SSEL0      35  SSEL0
+ * P1[20]/MCFB0/PWM1[2]/SCK0         34  SCK0
+ * P1[23]/MCFB1/PWM1[4]/MISO0        37  MISO0
+ * P1[24]/MCFB2/PWM1[5]/MOSI0        38  MOSI0
  * P3[25]/MAT0[0]/PWM1[2]            27  LCD_RST
  * P3[26]/STCLK/MAT0[1]/PWM1[3]      26  LCD_BL
  */
 
-#define LPC1766STK_LED1    (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT1 | GPIO_PIN25)
-#define LPC1766STK_LED2    (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT0 | GPIO_PIN4)
+#define LPC1766STK_LCD_CS  (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT3 | GPIO_PIN25)
+#define LPC1766STK_LCD_RST (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT3 | GPIO_PIN25)
+#define LPC1766STK_LCD_BL  (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT3 | GPIO_PIN26)
 
-/* MMC GPIO                         PIN  SIGNAL NAME
+/* SD/MMC GPIO                      PIN  SIGNAL NAME
  * -------------------------------- ---- --------------
+ * P0[6]/I2SRX_SDA/SSEL1/MAT2[0]     79  SSEL1
+ * P0[7]/I2STX_CLK/SCK1/MAT2[1]      78  SCK1
+ * P0[8]/I2STX_WS/MISO1/MAT2[2]      77  MISO1
+ * P0[9]/I2STX_SDA/MOSI1/MAT2[3]     76  MOSI1
  * P0[21]/RI1/RD1                    57  MMC PWR
  */
 
+#define LPC1766STK_MMC_CS  (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT0 | GPIO_PIN6)
 #define LPC1766STK_MMC_PWR (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT0 | GPIO_PIN21)
 
 /* AD GPIO                          PIN  SIGNAL NAME

configs/olimex-lpc1766stk/src/up_ssp.c

@@ -81,9 +81,11 @@
 /* Dump GPIO registers */
 
 #ifdef SSP_VERBOSE
-#  define ssp_dumpgpio(m) lpc17_dumpgpio(SDCCS_GPIO, m)
+#  define ssp_dumpssp0gpio(m) lpc17_dumpgpio(LPC1766STK_LCD_CS, m)
+#  define ssp_dumpssp1gpio(m) lpc17_dumpgpio(LPC1766STK_MMC_CS, m)
 #else
-#  define ssp_dumpgpio(m)
+#  define ssp_dumpssp0gpio(m)
+#  define ssp_dumpssp1gpio(m)
 #endif
 
 /************************************************************************************
@@ -104,11 +106,21 @@
 
 void weak_function lpc17_sspinitialize(void)
 {
-  /* Configure the SPI chip select GPIOs */
+  /* Configure the SSP0 chip select GPIOs.  Only the Nokia LCD is connected to SSP0 */
 
-  ssp_dumpgpio("lpc17_sspinitialize() Entry)");
-#warning "Not implemented"
-  ssp_dumpgpio("lpc17_sspinitialize() Exit");
+#ifdef CONFIG_LPC17_SSP0
+  ssp_dumpssp0gpio("BEFORE SSP0 Initialization");
+  lpc17_configgpio(LPC1766STK_LCD_CS);
+  ssp_dumpssp0gpio("AFTER SSP0 Initialization");
+#endif
+
+  /* Configure SSP1 chip select GPIOs.  Only the SD/MMC card slot is connected to SSP1 */
+
+#ifdef CONFIG_LPC17_SSP1
+  ssp_dumpssp0gpio("BEFORE SSP1 Initialization");
+  lpc17_configgpio(LPC1766STK_MMC_CS);
+  ssp_dumpssp0gpio("AFTER SSP1 Initialization");
+#endif
 }
 
 /************************************************************************************
@@ -140,20 +152,42 @@ void weak_function lpc17_sspinitialize(void)
 void  lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
 {
   sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
-  ssp_dumpgpio("lpc17_spiselect() Entry");
-#warning "Not implemented"
-  ssp_dumpgpio("lpc17_spiselect() Exit");
+  if (devid == SPIDEV_DISPLAY)
+    {
+      /* Assert/de-assert the CS pin to the card */
+
+      ssp_dumpssp0gpio("lpc17_ssp0select() Entry");
+      lm3s_gpiowrite(LPC1766STK_LCD_CS, !selected);
+      ssp_dumpssp0gpio("lpc17_ssp0select() Exit");
+    }
 }
 
 uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
 {
-  sspdbg("Returning SPI_STATUS_PRESENT\n");
-  return SPI_STATUS_PRESENT;
+  sspdbg("Returning nothing\n");
+  return 0;
 }
 #endif
 
 #ifdef CONFIG_LPC17_SSP1
-# warning "SSP1 chip selects not known"
+void  lpc17_ssp1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+  if (devid == SPIDEV_MMCSD)
+    {
+      /* Assert/de-assert the CS pin to the card */
+
+      ssp_dumpssp1gpio("lpc17_ssp1select() Entry");
+      lm3s_gpiowrite(LPC1766STK_MMC_CS, !selected);
+      ssp_dumpssp1gpio("lpc17_ssp1select() Exit");
+    }
+}
+
+uint8_t lpc17_ssp1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  sspdbg("Returning SPI_STATUS_PRESENT\n");
+  return SPI_STATUS_PRESENT;
+}
 #endif
 
 #endif /* CONFIG_LPC17_SSP0 || CONFIG_LPC17_SSP1 */