Merge commit 'wd/master'

1 files changed, 160 insertions, 0 deletions

diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
new file mode 100644
index 0000000..27df449
--- /dev/null
+++ b/drivers/video/atmel_lcdfb.c
@@ -0,0 +1,160 @@
+/*
+ * Driver for AT91/AT32 LCD Controller
+ *
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/clk.h>
+#include <lcd.h>
+#include <atmel_lcdc.h>
+
+int lcd_line_length;
+int lcd_color_fg;
+int lcd_color_bg;
+
+void *lcd_base;				/* Start of framebuffer memory	*/
+void *lcd_console_address;		/* Start of console buffer	*/
+
+short console_col;
+short console_row;
+
+/* configurable parameters */
+#define ATMEL_LCDC_CVAL_DEFAULT		0xc8
+#define ATMEL_LCDC_DMA_BURST_LEN	8
+
+#if defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91CAP9)
+#define ATMEL_LCDC_FIFO_SIZE		2048
+#else
+#define ATMEL_LCDC_FIFO_SIZE		512
+#endif
+
+#define lcdc_readl(mmio, reg)		__raw_readl((mmio)+(reg))
+#define lcdc_writel(mmio, reg, val)	__raw_writel((val), (mmio)+(reg))
+
+void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
+{
+#if defined(CONFIG_ATMEL_LCD_BGR555)
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_LUT(regno),
+		    (red >> 3) | ((green & 0xf8) << 2) | ((blue & 0xf8) << 7));
+#else
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_LUT(regno),
+		    (blue >> 3) | ((green & 0xfc) << 3) | ((red & 0xf8) << 8));
+#endif
+}
+
+void lcd_ctrl_init(void *lcdbase)
+{
+	unsigned long value;
+
+	/* Turn off the LCD controller and the DMA controller */
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_PWRCON,
+		    1 << ATMEL_LCDC_GUARDT_OFFSET);
+
+	/* Wait for the LCDC core to become idle */
+	while (lcdc_readl(panel_info.mmio, ATMEL_LCDC_PWRCON) & ATMEL_LCDC_BUSY)
+		udelay(10);
+
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_DMACON, 0);
+
+	/* Reset LCDC DMA */
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_DMACON, ATMEL_LCDC_DMARST);
+
+	/* ...set frame size and burst length = 8 words (?) */
+	value = (panel_info.vl_col * panel_info.vl_row *
+		 NBITS(panel_info.vl_bpix)) / 32;
+	value |= ((ATMEL_LCDC_DMA_BURST_LEN - 1) << ATMEL_LCDC_BLENGTH_OFFSET);
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_DMAFRMCFG, value);
+
+	/* Set pixel clock */
+	value = get_lcdc_clk_rate(0) / panel_info.vl_clk;
+	if (get_lcdc_clk_rate(0) % panel_info.vl_clk)
+		value++;
+	value = (value / 2) - 1;
+
+	if (!value) {
+		lcdc_writel(panel_info.mmio, ATMEL_LCDC_LCDCON1, ATMEL_LCDC_BYPASS);
+	} else
+		lcdc_writel(panel_info.mmio, ATMEL_LCDC_LCDCON1,
+			    value << ATMEL_LCDC_CLKVAL_OFFSET);
+
+	/* Initialize control register 2 */
+	value = ATMEL_LCDC_MEMOR_LITTLE | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE;
+	if (panel_info.vl_tft)
+		value |= ATMEL_LCDC_DISTYPE_TFT;
+
+	if (!(panel_info.vl_sync & ATMEL_LCDC_INVLINE_INVERTED))
+		value |= ATMEL_LCDC_INVLINE_INVERTED;
+	if (!(panel_info.vl_sync & ATMEL_LCDC_INVFRAME_INVERTED))
+		value |= ATMEL_LCDC_INVFRAME_INVERTED;
+	value |= (panel_info.vl_bpix << 5);
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_LCDCON2, value);
+
+	/* Vertical timing */
+	value = (panel_info.vl_vsync_len - 1) << ATMEL_LCDC_VPW_OFFSET;
+	value |= panel_info.vl_upper_margin << ATMEL_LCDC_VBP_OFFSET;
+	value |= panel_info.vl_lower_margin;
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_TIM1, value);
+
+	/* Horizontal timing */
+	value = (panel_info.vl_right_margin - 1) << ATMEL_LCDC_HFP_OFFSET;
+	value |= (panel_info.vl_hsync_len - 1) << ATMEL_LCDC_HPW_OFFSET;
+	value |= (panel_info.vl_left_margin - 1);
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_TIM2, value);
+
+	/* Display size */
+	value = (panel_info.vl_col - 1) << ATMEL_LCDC_HOZVAL_OFFSET;
+	value |= panel_info.vl_row - 1;
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_LCDFRMCFG, value);
+
+	/* FIFO Threshold: Use formula from data sheet */
+	value = ATMEL_LCDC_FIFO_SIZE - (2 * ATMEL_LCDC_DMA_BURST_LEN + 3);
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_FIFO, value);
+
+	/* Toggle LCD_MODE every frame */
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_MVAL, 0);
+
+	/* Disable all interrupts */
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_IDR, ~0UL);
+
+	/* Set contrast */
+	value = ATMEL_LCDC_PS_DIV8 |
+		ATMEL_LCDC_POL_POSITIVE |
+		ATMEL_LCDC_ENA_PWMENABLE;
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_CONTRAST_CTR, value);
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_CONTRAST_VAL, ATMEL_LCDC_CVAL_DEFAULT);
+
+	/* Set framebuffer DMA base address and pixel offset */
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_DMABADDR1, (u_long)lcdbase);
+
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_DMACON, ATMEL_LCDC_DMAEN);
+	lcdc_writel(panel_info.mmio, ATMEL_LCDC_PWRCON,
+		    (1 << ATMEL_LCDC_GUARDT_OFFSET) | ATMEL_LCDC_PWR);
+}
+
+ulong calc_fbsize(void)
+{
+	return ((panel_info.vl_col * panel_info.vl_row *
+		NBITS(panel_info.vl_bpix)) / 8) + PAGE_SIZE;
+}