Convert Nokia6610GE12 driver to new format.

1 files changed, 225 insertions, 0 deletions

diff --git a/drivers/gdisp/Nokia6610GE12/board_Nokia6610GE12_olimexsam7ex256.h b/drivers/gdisp/Nokia6610GE12/board_Nokia6610GE12_olimexsam7ex256.h
new file mode 100644
index 00000000..e0f8e988
--- /dev/null
+++ b/drivers/gdisp/Nokia6610GE12/board_Nokia6610GE12_olimexsam7ex256.h
@@ -0,0 +1,225 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+/**
+ * @file    drivers/gdisp/Nokia6610GE8/board_Nokia6610GE12_olimexsam7ex256.h
+ * @brief   GDISP Graphic Driver subsystem board interface for the Olimex SAM7-EX256 board.
+ */
+
+#ifndef _GDISP_LLD_BOARD_H
+#define _GDISP_LLD_BOARD_H
+
+/*
+ * Set various display properties. These properties mostly depend on the exact controller chip you get.
+ * The defaults should work for most controllers.
+ */
+//#define GDISP_SCREEN_HEIGHT				130		// The visible display height
+//#define GDISP_SCREEN_WIDTH				130		// The visible display width
+//#define GDISP_RAM_X_OFFSET				0		// The x offset of the visible area
+//#define GDISP_RAM_Y_OFFSET				2		// The y offset of the visible area
+//#define GDISP_SLEEP_POS					50		// The position of the sleep mode partial display
+//#define GDISP_INITIAL_CONTRAST			50		// The initial contrast percentage
+//#define GDISP_INITIAL_BACKLIGHT			100		// The initial backlight percentage
+
+// For a multiple display configuration we would put all this in a structure and then
+//	set g->priv to that structure.
+
+// ******************************************************
+// Pointers to AT91SAM7X256 peripheral data structures
+// ******************************************************
+static volatile AT91PS_PIO pPIOA = AT91C_BASE_PIOA;
+static volatile AT91PS_PIO pPIOB = AT91C_BASE_PIOB;
+static volatile AT91PS_SPI pSPI = AT91C_BASE_SPI0;
+static volatile AT91PS_PMC pPMC = AT91C_BASE_PMC;
+static volatile AT91PS_PDC pPDC = AT91C_BASE_PDC_SPI0;
+
+/* The PWM backlight control is non-linear on this board.
+ * We pick values here that make it look a bit more linear.
+ */
+#define PWM_TOP_VALUE		500
+#define PWM_BOTTOM_VALUE	200
+
+#define PWM_VALUE(x)	(PWM_BOTTOM_VALUE+(PWM_TOP_VALUE-PWM_BOTTOM_VALUE)*(x)/100)
+
+/* PWM configuration structure. The LCD Backlight is on PWM1/PB20 ie PWM2/PIN1 in ChibiOS speak */
+static const PWMConfig pwmcfg = {
+  1000000,		/* 1 MHz PWM clock frequency. Ignored as we are using PWM_MCK_DIV_n */
+  1000,			/* PWM period is 1000 cycles. */
+  NULL,
+  {
+   {PWM_MCK_DIV_1 | PWM_OUTPUT_ACTIVE_HIGH | PWM_OUTPUT_PIN1 | PWM_DISABLEPULLUP_PIN1, NULL},
+  },
+};
+
+static bool_t pwmRunning = FALSE;
+
+static inline void init_board(GDisplay *g) {
+
+	// As we are not using multiple displays we set g->priv to NULL as we don't use it.
+	g->priv = 0;
+
+	switch(g->controllerdisplay) {
+	case 0:											// Set up for Display 0
+		// *********************************************************************************************
+		// InitSpi( )
+		//
+		// Sets up SPI channel 0 for communications to Nokia 6610 LCD Display
+		//
+		// I/O ports used:	PA2  = LCD Reset (set to low to reset)
+		//					PA12 = LCD chip select (set to low to select the LCD chip)
+		//					PA16 = SPI0_MISO Master In - Slave Out (not used in LCD interface)
+		//					PA17 = SPI0_MOSI Master Out - Slave In pin (Serial Data to LCD slave)
+		//					PA18 = SPI0_SPCK Serial Clock (to LCD slave)
+		//					PB20 = backlight control (normally PWM control, 1 = full on)
+		//
+		// *********************************************************************************************}
+
+		/* This code should really use the ChibiOS driver for these functions */
+
+		// Pin for backlight
+		pPIOB->PIO_CODR   = PIOB_LCD_BL_MASK;    // Set PB20 to LOW
+		pPIOB->PIO_OER    = PIOB_LCD_BL_MASK;    // Configure PB20 as output
+
+		// Reset pin
+		pPIOA->PIO_SODR   = PIOA_LCD_RESET_MASK;     // Set PA2 to HIGH
+		pPIOA->PIO_OER    = PIOA_LCD_RESET_MASK;     // Configure PA2 as output
+
+		// CS pin - this seems to be ignored
+		// pPIOA->PIO_SODR   = 1<<12;     // Set PA2 to HIGH
+		// pPIOA->PIO_OER    = 1<<12;     // Configure PA2 as output
+
+		// Init SPI0
+		// Disable the following pins from PIO control (will be used instead by the SPI0 peripheral)
+		// BIT12 = PA12 -> SPI0_NPCS0 chip select
+		// BIT16 = PA16 -> SPI0_MISO Master In - Slave Out (not used in LCD interface)
+		// BIT17 = PA17 -> SPI0_MOSI Master Out - Slave In pin (Serial Data to LCD slave)
+		// BIT18 = PA18 -> SPI0_SPCK Serial Clock (to LCD slave)
+		pPIOA->PIO_PDR = (1<<12) | (1<<16) | (1<<17) | (1<<18);
+		pPIOA->PIO_ASR = (1<<12) | (1<<16) | (1<<17) | (1<<18);
+		pPIOA->PIO_BSR = 0;
+
+		//enable the clock of SPI
+		pPMC->PMC_PCER = 1 << AT91C_ID_SPI0;
+
+		// Fixed mode
+		pSPI->SPI_CR      = 0x81;               //SPI Enable, Software reset
+		pSPI->SPI_CR      = 0x01;               //SPI Enable
+		pSPI->SPI_MR      = 0xE0011;			//Master mode, fixed select, disable decoder, PCS=1110
+		pSPI->SPI_CSR[0]  = 0x01010311;			//9bit, CPOL=1, ClockPhase=0, SCLK = 48Mhz/3 = 16MHz
+
+		/* Display backlight control at 100% */
+		pwmRunning = FALSE;
+		palSetPad(IOPORT2, PIOB_LCD_BL);
+		break;
+	}
+}
+
+/**
+ * @brief   Set or clear the lcd reset pin.
+ *
+ * @param[in] state		TRUE = lcd in reset, FALSE = normal operation
+ * 
+ * @notapi
+ */
+static inline void setpin_reset(GDisplay *g, bool_t state) {
+	(void) g;
+	if (state)
+		palClearPad(IOPORT1, PIOA_LCD_RESET);
+	else
+		palSetPad(IOPORT1, PIOA_LCD_RESET);
+}
+
+/**
+ * @brief   Set the lcd back-light level.
+ * @note	For now 0% turns the backlight off, anything else the backlight is on.
+ *			While the hardware supports PWM backlight control, we are not using it
+ *			yet.
+ *
+ * @param[in] percent		0 to 100%
+ * 
+ * @notapi
+ */
+static inline void set_backlight(GDisplay *g, uint8_t percent) {
+	(void) g;
+
+	if (percent == 100) {
+		/* Turn the pin on - No PWM */
+		if (pwmRunning) {
+			pwmStop(&PWMD2);
+			pwmRunning = FALSE;
+		}
+		palSetPad(IOPORT2, PIOB_LCD_BL);
+	} else if (percent == 0) {
+		/* Turn the pin off - No PWM */
+		if (pwmRunning) {
+			pwmStop(&PWMD2);
+			pwmRunning = FALSE;
+		}
+		palClearPad(IOPORT2, PIOB_LCD_BL);
+	} else {
+		/* Use the PWM */
+		if (!pwmRunning) {
+			pwmStart(&PWMD2, &pwmcfg);
+			pwmRunning = TRUE;
+		}
+		pwmEnableChannel(&PWMD2, 0, PWM_VALUE(percent));
+	}
+}
+
+/**
+ * @brief   Take exclusive control of the bus
+ *
+ * @notapi
+ */
+static inline void acquire_bus(GDisplay *g) {
+	(void) g;
+	/* Nothing to do for this board as the LCD is the only device on the SPI port */
+}
+
+/**
+ * @brief   Release exclusive control of the bus
+ *
+ * @notapi
+ */
+static inline void release_bus(GDisplay *g) {
+	(void) g;
+	// Nothing to do for this board as the LCD is the only device on the SPI port
+}
+
+/**
+ * @brief   Send an 8 bit command to the lcd.
+ *
+ * @param[in] cmd		The command to send
+ *
+ * @notapi
+ */
+static inline void write_index(GDisplay *g, uint16_t cmd) {
+	(void) g;
+
+	// wait for the previous transfer to complete
+	while((pSPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0);
+	// send the command
+	pSPI->SPI_TDR = cmd & 0xFF;
+}
+
+/**
+ * @brief   Send an 8 bit data to the lcd.
+ *
+ * @param[in] data		The data to send
+ * 
+ * @notapi
+ */
+static inline void write_data(GDisplay *g, uint16_t data) {
+	(void) g;
+
+	// wait for the previous transfer to complete
+	while((pSPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0);
+	// send the data
+	pSPI->SPI_TDR = data | 0x0100;
+}
+
+#endif /* _GDISP_LLD_BOARD_H */