[U-Boot] [PATCH v7 06/16] tegra: Add SOC support for display/lcd
Simon Glass
sjg at chromium.org
Thu Oct 18 01:24:50 CEST 2012
From: Wei Ni <wni at nvidia.com>
Add support for the LCD peripheral at the Tegra2 SOC level. A separate
LCD driver will use this functionality to configure the display.
Signed-off-by: Mayuresh Kulkarni <mkulkarni at nvidia.com>
Mayuresh Kulkarni:
- changes to remove bitfields and clean up for submission
Signed-off-by: Simon Glass <sjg at chromium.org>
Simon Glass:
- simplify code, move clock control into here, clean-up
---
Changes in v4:
- Rebase on top of new tegra common directory structure
- Adjust fdt binding according to Thierry and Stephen's comments
- Remove LCD frame buffer address property hack
Changes in v3:
- Separate display driver and LCD driver more in fdt
- Add probe function to read in fdt parameters in display driver
arch/arm/cpu/armv7/tegra20/Makefile | 1 +
arch/arm/cpu/armv7/tegra20/display.c | 409 ++++++++++++++++++++
arch/arm/include/asm/arch-tegra20/dc.h | 545 +++++++++++++++++++++++++++
arch/arm/include/asm/arch-tegra20/display.h | 152 ++++++++
include/fdtdec.h | 1 +
lib/fdtdec.c | 1 +
6 files changed, 1109 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/cpu/armv7/tegra20/display.c
create mode 100644 arch/arm/include/asm/arch-tegra20/dc.h
create mode 100644 arch/arm/include/asm/arch-tegra20/display.h
diff --git a/arch/arm/cpu/armv7/tegra20/Makefile b/arch/arm/cpu/armv7/tegra20/Makefile
index 77cb4d1..54ed8c4 100644
--- a/arch/arm/cpu/armv7/tegra20/Makefile
+++ b/arch/arm/cpu/armv7/tegra20/Makefile
@@ -29,6 +29,7 @@ LIB = $(obj)lib$(SOC).o
COBJS-$(CONFIG_USB_EHCI_TEGRA) += usb.o
COBJS-$(CONFIG_PWM_TEGRA) += pwm.o
+COBJS-$(CONFIG_VIDEO_TEGRA) += display.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/arch/arm/cpu/armv7/tegra20/display.c b/arch/arm/cpu/armv7/tegra20/display.c
new file mode 100644
index 0000000..031f9a8
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra20/display.c
@@ -0,0 +1,409 @@
+/*
+ * (C) Copyright 2010
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * 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/clock.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch/display.h>
+#include <asm/arch/dc.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/timer.h>
+
+static struct fdt_disp_config config;
+
+static void update_window(struct dc_ctlr *dc, struct disp_ctl_win *win)
+{
+ unsigned h_dda, v_dda;
+ unsigned long val;
+
+ val = readl(&dc->cmd.disp_win_header);
+ val |= WINDOW_A_SELECT;
+ writel(val, &dc->cmd.disp_win_header);
+
+ writel(win->fmt, &dc->win.color_depth);
+
+ clrsetbits_le32(&dc->win.byte_swap, BYTE_SWAP_MASK,
+ BYTE_SWAP_NOSWAP << BYTE_SWAP_SHIFT);
+
+ val = win->out_x << H_POSITION_SHIFT;
+ val |= win->out_y << V_POSITION_SHIFT;
+ writel(val, &dc->win.pos);
+
+ val = win->out_w << H_SIZE_SHIFT;
+ val |= win->out_h << V_SIZE_SHIFT;
+ writel(val, &dc->win.size);
+
+ val = (win->w * win->bpp / 8) << H_PRESCALED_SIZE_SHIFT;
+ val |= win->h << V_PRESCALED_SIZE_SHIFT;
+ writel(val, &dc->win.prescaled_size);
+
+ writel(0, &dc->win.h_initial_dda);
+ writel(0, &dc->win.v_initial_dda);
+
+ h_dda = (win->w * 0x1000) / max(win->out_w - 1, 1);
+ v_dda = (win->h * 0x1000) / max(win->out_h - 1, 1);
+
+ val = h_dda << H_DDA_INC_SHIFT;
+ val |= v_dda << V_DDA_INC_SHIFT;
+ writel(val, &dc->win.dda_increment);
+
+ writel(win->stride, &dc->win.line_stride);
+ writel(0, &dc->win.buf_stride);
+
+ val = WIN_ENABLE;
+ if (win->bpp < 24)
+ val |= COLOR_EXPAND;
+ writel(val, &dc->win.win_opt);
+
+ writel((unsigned long)win->phys_addr, &dc->winbuf.start_addr);
+ writel(win->x, &dc->winbuf.addr_h_offset);
+ writel(win->y, &dc->winbuf.addr_v_offset);
+
+ writel(0xff00, &dc->win.blend_nokey);
+ writel(0xff00, &dc->win.blend_1win);
+
+ val = GENERAL_ACT_REQ | WIN_A_ACT_REQ;
+ val |= GENERAL_UPDATE | WIN_A_UPDATE;
+ writel(val, &dc->cmd.state_ctrl);
+}
+
+static void write_pair(struct fdt_disp_config *config, int item, u32 *reg)
+{
+ writel(config->horiz_timing[item] |
+ (config->vert_timing[item] << 16), reg);
+}
+
+static int update_display_mode(struct dc_disp_reg *disp,
+ struct fdt_disp_config *config)
+{
+ unsigned long val;
+ unsigned long rate;
+ unsigned long div;
+
+ writel(0x0, &disp->disp_timing_opt);
+ write_pair(config, FDT_LCD_TIMING_REF_TO_SYNC, &disp->ref_to_sync);
+ write_pair(config, FDT_LCD_TIMING_SYNC_WIDTH, &disp->sync_width);
+ write_pair(config, FDT_LCD_TIMING_BACK_PORCH, &disp->back_porch);
+ write_pair(config, FDT_LCD_TIMING_FRONT_PORCH, &disp->front_porch);
+
+ writel(config->width | (config->height << 16), &disp->disp_active);
+
+ val = DE_SELECT_ACTIVE << DE_SELECT_SHIFT;
+ val |= DE_CONTROL_NORMAL << DE_CONTROL_SHIFT;
+ writel(val, &disp->data_enable_opt);
+
+ val = DATA_FORMAT_DF1P1C << DATA_FORMAT_SHIFT;
+ val |= DATA_ALIGNMENT_MSB << DATA_ALIGNMENT_SHIFT;
+ val |= DATA_ORDER_RED_BLUE << DATA_ORDER_SHIFT;
+ writel(val, &disp->disp_interface_ctrl);
+
+ /*
+ * The pixel clock divider is in 7.1 format (where the bottom bit
+ * represents 0.5). Here we calculate the divider needed to get from
+ * the display clock (typically 600MHz) to the pixel clock. We round
+ * up or down as requried.
+ */
+ rate = clock_get_periph_rate(PERIPH_ID_DISP1, CLOCK_ID_CGENERAL);
+ div = ((rate * 2 + config->pixel_clock / 2) / config->pixel_clock) - 2;
+ debug("Display clock %lu, divider %lu\n", rate, div);
+
+ writel(0x00010001, &disp->shift_clk_opt);
+
+ val = PIXEL_CLK_DIVIDER_PCD1 << PIXEL_CLK_DIVIDER_SHIFT;
+ val |= div << SHIFT_CLK_DIVIDER_SHIFT;
+ writel(val, &disp->disp_clk_ctrl);
+
+ return 0;
+}
+
+/* Start up the display and turn on power to PWMs */
+static void basic_init(struct dc_cmd_reg *cmd)
+{
+ u32 val;
+
+ writel(0x00000100, &cmd->gen_incr_syncpt_ctrl);
+ writel(0x0000011a, &cmd->cont_syncpt_vsync);
+ writel(0x00000000, &cmd->int_type);
+ writel(0x00000000, &cmd->int_polarity);
+ writel(0x00000000, &cmd->int_mask);
+ writel(0x00000000, &cmd->int_enb);
+
+ val = PW0_ENABLE | PW1_ENABLE | PW2_ENABLE;
+ val |= PW3_ENABLE | PW4_ENABLE | PM0_ENABLE;
+ val |= PM1_ENABLE;
+ writel(val, &cmd->disp_pow_ctrl);
+
+ val = readl(&cmd->disp_cmd);
+ val |= CTRL_MODE_C_DISPLAY << CTRL_MODE_SHIFT;
+ writel(val, &cmd->disp_cmd);
+}
+
+static void basic_init_timer(struct dc_disp_reg *disp)
+{
+ writel(0x00000020, &disp->mem_high_pri);
+ writel(0x00000001, &disp->mem_high_pri_timer);
+}
+
+static const u32 rgb_enb_tab[PIN_REG_COUNT] = {
+ 0x00000000,
+ 0x00000000,
+ 0x00000000,
+ 0x00000000,
+};
+
+static const u32 rgb_polarity_tab[PIN_REG_COUNT] = {
+ 0x00000000,
+ 0x01000000,
+ 0x00000000,
+ 0x00000000,
+};
+
+static const u32 rgb_data_tab[PIN_REG_COUNT] = {
+ 0x00000000,
+ 0x00000000,
+ 0x00000000,
+ 0x00000000,
+};
+
+static const u32 rgb_sel_tab[PIN_OUTPUT_SEL_COUNT] = {
+ 0x00000000,
+ 0x00000000,
+ 0x00000000,
+ 0x00000000,
+ 0x00210222,
+ 0x00002200,
+ 0x00020000,
+};
+
+static void rgb_enable(struct dc_com_reg *com)
+{
+ int i;
+
+ for (i = 0; i < PIN_REG_COUNT; i++) {
+ writel(rgb_enb_tab[i], &com->pin_output_enb[i]);
+ writel(rgb_polarity_tab[i], &com->pin_output_polarity[i]);
+ writel(rgb_data_tab[i], &com->pin_output_data[i]);
+ }
+
+ for (i = 0; i < PIN_OUTPUT_SEL_COUNT; i++)
+ writel(rgb_sel_tab[i], &com->pin_output_sel[i]);
+}
+
+int setup_window(struct disp_ctl_win *win, struct fdt_disp_config *config)
+{
+ win->x = 0;
+ win->y = 0;
+ win->w = config->width;
+ win->h = config->height;
+ win->out_x = 0;
+ win->out_y = 0;
+ win->out_w = config->width;
+ win->out_h = config->height;
+ win->phys_addr = config->frame_buffer;
+ win->stride = config->width * (1 << config->log2_bpp) / 8;
+ debug("%s: depth = %d\n", __func__, config->log2_bpp);
+ switch (config->log2_bpp) {
+ case 5:
+ case 24:
+ win->fmt = COLOR_DEPTH_R8G8B8A8;
+ win->bpp = 32;
+ break;
+ case 4:
+ win->fmt = COLOR_DEPTH_B5G6R5;
+ win->bpp = 16;
+ break;
+
+ default:
+ debug("Unsupported LCD bit depth");
+ return -1;
+ }
+
+ return 0;
+}
+
+struct fdt_disp_config *tegra_display_get_config(void)
+{
+ return config.valid ? &config : NULL;
+}
+
+static void debug_timing(const char *name, unsigned int timing[])
+{
+#ifdef DEBUG
+ int i;
+
+ debug("%s timing: ", name);
+ for (i = 0; i < FDT_LCD_TIMING_COUNT; i++)
+ debug("%d ", timing[i]);
+ debug("\n");
+#endif
+}
+
+/**
+ * Decode panel information from the fdt, according to a standard binding
+ *
+ * @param blob fdt blob
+ * @param node offset of fdt node to read from
+ * @param config structure to store fdt config into
+ * @return 0 if ok, -ve on error
+ */
+static int tegra_decode_panel(const void *blob, int node,
+ struct fdt_disp_config *config)
+{
+ int front, back, ref;
+
+ config->width = fdtdec_get_int(blob, node, "xres", -1);
+ config->height = fdtdec_get_int(blob, node, "yres", -1);
+ config->pixel_clock = fdtdec_get_int(blob, node, "clock", 0);
+ if (!config->pixel_clock || config->width == -1 ||
+ config->height == -1) {
+ debug("%s: Pixel parameters missing\n", __func__);
+ return -FDT_ERR_NOTFOUND;
+ }
+
+ back = fdtdec_get_int(blob, node, "left-margin", -1);
+ front = fdtdec_get_int(blob, node, "right-margin", -1);
+ ref = fdtdec_get_int(blob, node, "hsync-len", -1);
+ if ((back | front | ref) == -1) {
+ debug("%s: Horizontal parameters missing\n", __func__);
+ return -FDT_ERR_NOTFOUND;
+ }
+
+ /* Use a ref-to-sync of 1 always, and take this from the front porch */
+ config->horiz_timing[FDT_LCD_TIMING_REF_TO_SYNC] = 1;
+ config->horiz_timing[FDT_LCD_TIMING_SYNC_WIDTH] = ref;
+ config->horiz_timing[FDT_LCD_TIMING_BACK_PORCH] = back;
+ config->horiz_timing[FDT_LCD_TIMING_FRONT_PORCH] = front -
+ config->horiz_timing[FDT_LCD_TIMING_REF_TO_SYNC];
+ debug_timing("horiz", config->horiz_timing);
+
+ back = fdtdec_get_int(blob, node, "upper-margin", -1);
+ front = fdtdec_get_int(blob, node, "lower-margin", -1);
+ ref = fdtdec_get_int(blob, node, "vsync-len", -1);
+ if ((back | front | ref) == -1) {
+ debug("%s: Vertical parameters missing\n", __func__);
+ return -FDT_ERR_NOTFOUND;
+ }
+
+ config->vert_timing[FDT_LCD_TIMING_REF_TO_SYNC] = 1;
+ config->vert_timing[FDT_LCD_TIMING_SYNC_WIDTH] = ref;
+ config->vert_timing[FDT_LCD_TIMING_BACK_PORCH] = back;
+ config->vert_timing[FDT_LCD_TIMING_FRONT_PORCH] = front -
+ config->vert_timing[FDT_LCD_TIMING_REF_TO_SYNC];
+ debug_timing("vert", config->vert_timing);
+
+ return 0;
+}
+
+/**
+ * Decode the display controller information from the fdt.
+ *
+ * @param blob fdt blob
+ * @param config structure to store fdt config into
+ * @return 0 if ok, -ve on error
+ */
+static int tegra_display_decode_config(const void *blob,
+ struct fdt_disp_config *config)
+{
+ int node, rgb;
+ int bpp, bit;
+
+ /* TODO: Support multiple controllers */
+ node = fdtdec_next_compatible(blob, 0, COMPAT_NVIDIA_TEGRA20_DC);
+ if (node < 0) {
+ debug("%s: Cannot find display controller node in fdt\n",
+ __func__);
+ return node;
+ }
+ config->disp = (struct disp_ctlr *)fdtdec_get_addr(blob, node, "reg");
+ if (!config->disp) {
+ debug("%s: No display controller address\n", __func__);
+ return -1;
+ }
+
+ rgb = fdt_subnode_offset(blob, node, "rgb");
+
+ config->panel_node = fdtdec_lookup_phandle(blob, rgb, "nvidia,panel");
+ if (!config->panel_node < 0) {
+ debug("%s: Cannot find panel information\n", __func__);
+ return -1;
+ }
+
+ if (tegra_decode_panel(blob, config->panel_node, config)) {
+ debug("%s: Failed to decode panel information\n", __func__);
+ return -1;
+ }
+
+ bpp = fdtdec_get_int(blob, config->panel_node, "nvidia,bits-per-pixel",
+ -1);
+ bit = ffs(bpp) - 1;
+ if (bpp == (1 << bit))
+ config->log2_bpp = bit;
+ else
+ config->log2_bpp = bpp;
+ if (bpp == -1) {
+ debug("%s: Pixel bpp parameters missing\n", __func__);
+ return -FDT_ERR_NOTFOUND;
+ }
+ config->bpp = bpp;
+
+ config->valid = 1; /* we have a valid configuration */
+
+ return 0;
+}
+
+int tegra_display_probe(const void *blob, void *default_lcd_base)
+{
+ struct disp_ctl_win window;
+ struct dc_ctlr *dc;
+
+ if (tegra_display_decode_config(blob, &config))
+ return -1;
+
+ config.frame_buffer = (u32)default_lcd_base;
+
+ dc = (struct dc_ctlr *)config.disp;
+
+ /*
+ * A header file for clock constants was NAKed upstream.
+ * TODO: Put this into the FDT and fdt_lcd struct when we have clock
+ * support there
+ */
+ clock_start_periph_pll(PERIPH_ID_HOST1X, CLOCK_ID_PERIPH,
+ 144 * 1000000);
+ clock_start_periph_pll(PERIPH_ID_DISP1, CLOCK_ID_CGENERAL,
+ 600 * 1000000);
+ basic_init(&dc->cmd);
+ basic_init_timer(&dc->disp);
+ rgb_enable(&dc->com);
+
+ if (config.pixel_clock)
+ update_display_mode(&dc->disp, &config);
+
+ if (setup_window(&window, &config))
+ return -1;
+
+ update_window(dc, &window);
+
+ return 0;
+}
diff --git a/arch/arm/include/asm/arch-tegra20/dc.h b/arch/arm/include/asm/arch-tegra20/dc.h
new file mode 100644
index 0000000..37934e1
--- /dev/null
+++ b/arch/arm/include/asm/arch-tegra20/dc.h
@@ -0,0 +1,545 @@
+/*
+ * (C) Copyright 2010
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * 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
+ */
+
+#ifndef __ASM_ARCH_TEGRA_DC_H
+#define __ASM_ARCH_TEGRA_DC_H
+
+/* Register definitions for the Tegra display controller */
+
+/* CMD register 0x000 ~ 0x43 */
+struct dc_cmd_reg {
+ /* Address 0x000 ~ 0x002 */
+ uint gen_incr_syncpt; /* _CMD_GENERAL_INCR_SYNCPT_0 */
+ uint gen_incr_syncpt_ctrl; /* _CMD_GENERAL_INCR_SYNCPT_CNTRL_0 */
+ uint gen_incr_syncpt_err; /* _CMD_GENERAL_INCR_SYNCPT_ERROR_0 */
+
+ uint reserved0[5]; /* reserved_0[5] */
+
+ /* Address 0x008 ~ 0x00a */
+ uint win_a_incr_syncpt; /* _CMD_WIN_A_INCR_SYNCPT_0 */
+ uint win_a_incr_syncpt_ctrl; /* _CMD_WIN_A_INCR_SYNCPT_CNTRL_0 */
+ uint win_a_incr_syncpt_err; /* _CMD_WIN_A_INCR_SYNCPT_ERROR_0 */
+
+ uint reserved1[5]; /* reserved_1[5] */
+
+ /* Address 0x010 ~ 0x012 */
+ uint win_b_incr_syncpt; /* _CMD_WIN_B_INCR_SYNCPT_0 */
+ uint win_b_incr_syncpt_ctrl; /* _CMD_WIN_B_INCR_SYNCPT_CNTRL_0 */
+ uint win_b_incr_syncpt_err; /* _CMD_WIN_B_INCR_SYNCPT_ERROR_0 */
+
+ uint reserved2[5]; /* reserved_2[5] */
+
+ /* Address 0x018 ~ 0x01a */
+ uint win_c_incr_syncpt; /* _CMD_WIN_C_INCR_SYNCPT_0 */
+ uint win_c_incr_syncpt_ctrl; /* _CMD_WIN_C_INCR_SYNCPT_CNTRL_0 */
+ uint win_c_incr_syncpt_err; /* _CMD_WIN_C_INCR_SYNCPT_ERROR_0 */
+
+ uint reserved3[13]; /* reserved_3[13] */
+
+ /* Address 0x028 */
+ uint cont_syncpt_vsync; /* _CMD_CONT_SYNCPT_VSYNC_0 */
+
+ uint reserved4[7]; /* reserved_4[7] */
+
+ /* Address 0x030 ~ 0x033 */
+ uint ctxsw; /* _CMD_CTXSW_0 */
+ uint disp_cmd_opt0; /* _CMD_DISPLAY_COMMAND_OPTION0_0 */
+ uint disp_cmd; /* _CMD_DISPLAY_COMMAND_0 */
+ uint sig_raise; /* _CMD_SIGNAL_RAISE_0 */
+
+ uint reserved5[2]; /* reserved_0[2] */
+
+ /* Address 0x036 ~ 0x03e */
+ uint disp_pow_ctrl; /* _CMD_DISPLAY_POWER_CONTROL_0 */
+ uint int_stat; /* _CMD_INT_STATUS_0 */
+ uint int_mask; /* _CMD_INT_MASK_0 */
+ uint int_enb; /* _CMD_INT_ENABLE_0 */
+ uint int_type; /* _CMD_INT_TYPE_0 */
+ uint int_polarity; /* _CMD_INT_POLARITY_0 */
+ uint sig_raise1; /* _CMD_SIGNAL_RAISE1_0 */
+ uint sig_raise2; /* _CMD_SIGNAL_RAISE2_0 */
+ uint sig_raise3; /* _CMD_SIGNAL_RAISE3_0 */
+
+ uint reserved6; /* reserved_6 */
+
+ /* Address 0x040 ~ 0x043 */
+ uint state_access; /* _CMD_STATE_ACCESS_0 */
+ uint state_ctrl; /* _CMD_STATE_CONTROL_0 */
+ uint disp_win_header; /* _CMD_DISPLAY_WINDOW_HEADER_0 */
+ uint reg_act_ctrl; /* _CMD_REG_ACT_CONTROL_0 */
+};
+
+enum {
+ PIN_REG_COUNT = 4,
+ PIN_OUTPUT_SEL_COUNT = 7,
+};
+
+/* COM register 0x300 ~ 0x329 */
+struct dc_com_reg {
+ /* Address 0x300 ~ 0x301 */
+ uint crc_ctrl; /* _COM_CRC_CONTROL_0 */
+ uint crc_checksum; /* _COM_CRC_CHECKSUM_0 */
+
+ /* _COM_PIN_OUTPUT_ENABLE0/1/2/3_0: Address 0x302 ~ 0x305 */
+ uint pin_output_enb[PIN_REG_COUNT];
+
+ /* _COM_PIN_OUTPUT_POLARITY0/1/2/3_0: Address 0x306 ~ 0x309 */
+ uint pin_output_polarity[PIN_REG_COUNT];
+
+ /* _COM_PIN_OUTPUT_DATA0/1/2/3_0: Address 0x30a ~ 0x30d */
+ uint pin_output_data[PIN_REG_COUNT];
+
+ /* _COM_PIN_INPUT_ENABLE0_0: Address 0x30e ~ 0x311 */
+ uint pin_input_enb[PIN_REG_COUNT];
+
+ /* Address 0x312 ~ 0x313 */
+ uint pin_input_data0; /* _COM_PIN_INPUT_DATA0_0 */
+ uint pin_input_data1; /* _COM_PIN_INPUT_DATA1_0 */
+
+ /* _COM_PIN_OUTPUT_SELECT0/1/2/3/4/5/6_0: Address 0x314 ~ 0x31a */
+ uint pin_output_sel[PIN_OUTPUT_SEL_COUNT];
+
+ /* Address 0x31b ~ 0x329 */
+ uint pin_misc_ctrl; /* _COM_PIN_MISC_CONTROL_0 */
+ uint pm0_ctrl; /* _COM_PM0_CONTROL_0 */
+ uint pm0_duty_cycle; /* _COM_PM0_DUTY_CYCLE_0 */
+ uint pm1_ctrl; /* _COM_PM1_CONTROL_0 */
+ uint pm1_duty_cycle; /* _COM_PM1_DUTY_CYCLE_0 */
+ uint spi_ctrl; /* _COM_SPI_CONTROL_0 */
+ uint spi_start_byte; /* _COM_SPI_START_BYTE_0 */
+ uint hspi_wr_data_ab; /* _COM_HSPI_WRITE_DATA_AB_0 */
+ uint hspi_wr_data_cd; /* _COM_HSPI_WRITE_DATA_CD */
+ uint hspi_cs_dc; /* _COM_HSPI_CS_DC_0 */
+ uint scratch_reg_a; /* _COM_SCRATCH_REGISTER_A_0 */
+ uint scratch_reg_b; /* _COM_SCRATCH_REGISTER_B_0 */
+ uint gpio_ctrl; /* _COM_GPIO_CTRL_0 */
+ uint gpio_debounce_cnt; /* _COM_GPIO_DEBOUNCE_COUNTER_0 */
+ uint crc_checksum_latched; /* _COM_CRC_CHECKSUM_LATCHED_0 */
+};
+
+enum dc_disp_h_pulse_pos {
+ H_PULSE0_POSITION_A,
+ H_PULSE0_POSITION_B,
+ H_PULSE0_POSITION_C,
+ H_PULSE0_POSITION_D,
+ H_PULSE0_POSITION_COUNT,
+};
+
+struct _disp_h_pulse {
+ /* _DISP_H_PULSE0/1/2_CONTROL_0 */
+ uint h_pulse_ctrl;
+ /* _DISP_H_PULSE0/1/2_POSITION_A/B/C/D_0 */
+ uint h_pulse_pos[H_PULSE0_POSITION_COUNT];
+};
+
+enum dc_disp_v_pulse_pos {
+ V_PULSE0_POSITION_A,
+ V_PULSE0_POSITION_B,
+ V_PULSE0_POSITION_C,
+ V_PULSE0_POSITION_COUNT,
+};
+
+struct _disp_v_pulse0 {
+ /* _DISP_H_PULSE0/1_CONTROL_0 */
+ uint v_pulse_ctrl;
+ /* _DISP_H_PULSE0/1_POSITION_A/B/C_0 */
+ uint v_pulse_pos[V_PULSE0_POSITION_COUNT];
+};
+
+struct _disp_v_pulse2 {
+ /* _DISP_H_PULSE2/3_CONTROL_0 */
+ uint v_pulse_ctrl;
+ /* _DISP_H_PULSE2/3_POSITION_A_0 */
+ uint v_pulse_pos_a;
+};
+
+enum dc_disp_h_pulse_reg {
+ H_PULSE0,
+ H_PULSE1,
+ H_PULSE2,
+ H_PULSE_COUNT,
+};
+
+enum dc_disp_pp_select {
+ PP_SELECT_A,
+ PP_SELECT_B,
+ PP_SELECT_C,
+ PP_SELECT_D,
+ PP_SELECT_COUNT,
+};
+
+/* DISP register 0x400 ~ 0x4c1 */
+struct dc_disp_reg {
+ /* Address 0x400 ~ 0x40a */
+ uint disp_signal_opt0; /* _DISP_DISP_SIGNAL_OPTIONS0_0 */
+ uint disp_signal_opt1; /* _DISP_DISP_SIGNAL_OPTIONS1_0 */
+ uint disp_win_opt; /* _DISP_DISP_WIN_OPTIONS_0 */
+ uint mem_high_pri; /* _DISP_MEM_HIGH_PRIORITY_0 */
+ uint mem_high_pri_timer; /* _DISP_MEM_HIGH_PRIORITY_TIMER_0 */
+ uint disp_timing_opt; /* _DISP_DISP_TIMING_OPTIONS_0 */
+ uint ref_to_sync; /* _DISP_REF_TO_SYNC_0 */
+ uint sync_width; /* _DISP_SYNC_WIDTH_0 */
+ uint back_porch; /* _DISP_BACK_PORCH_0 */
+ uint disp_active; /* _DISP_DISP_ACTIVE_0 */
+ uint front_porch; /* _DISP_FRONT_PORCH_0 */
+
+ /* Address 0x40b ~ 0x419: _DISP_H_PULSE0/1/2_ */
+ struct _disp_h_pulse h_pulse[H_PULSE_COUNT];
+
+ /* Address 0x41a ~ 0x421 */
+ struct _disp_v_pulse0 v_pulse0; /* _DISP_V_PULSE0_ */
+ struct _disp_v_pulse0 v_pulse1; /* _DISP_V_PULSE1_ */
+
+ /* Address 0x422 ~ 0x425 */
+ struct _disp_v_pulse2 v_pulse3; /* _DISP_V_PULSE2_ */
+ struct _disp_v_pulse2 v_pulse4; /* _DISP_V_PULSE3_ */
+
+ /* Address 0x426 ~ 0x429 */
+ uint m0_ctrl; /* _DISP_M0_CONTROL_0 */
+ uint m1_ctrl; /* _DISP_M1_CONTROL_0 */
+ uint di_ctrl; /* _DISP_DI_CONTROL_0 */
+ uint pp_ctrl; /* _DISP_PP_CONTROL_0 */
+
+ /* Address 0x42a ~ 0x42d: _DISP_PP_SELECT_A/B/C/D_0 */
+ uint pp_select[PP_SELECT_COUNT];
+
+ /* Address 0x42e ~ 0x435 */
+ uint disp_clk_ctrl; /* _DISP_DISP_CLOCK_CONTROL_0 */
+ uint disp_interface_ctrl; /* _DISP_DISP_INTERFACE_CONTROL_0 */
+ uint disp_color_ctrl; /* _DISP_DISP_COLOR_CONTROL_0 */
+ uint shift_clk_opt; /* _DISP_SHIFT_CLOCK_OPTIONS_0 */
+ uint data_enable_opt; /* _DISP_DATA_ENABLE_OPTIONS_0 */
+ uint serial_interface_opt; /* _DISP_SERIAL_INTERFACE_OPTIONS_0 */
+ uint lcd_spi_opt; /* _DISP_LCD_SPI_OPTIONS_0 */
+ uint border_color; /* _DISP_BORDER_COLOR_0 */
+
+ /* Address 0x436 ~ 0x439 */
+ uint color_key0_lower; /* _DISP_COLOR_KEY0_LOWER_0 */
+ uint color_key0_upper; /* _DISP_COLOR_KEY0_UPPER_0 */
+ uint color_key1_lower; /* _DISP_COLOR_KEY1_LOWER_0 */
+ uint color_key1_upper; /* _DISP_COLOR_KEY1_UPPER_0 */
+
+ uint reserved0[2]; /* reserved_0[2] */
+
+ /* Address 0x43c ~ 0x442 */
+ uint cursor_foreground; /* _DISP_CURSOR_FOREGROUND_0 */
+ uint cursor_background; /* _DISP_CURSOR_BACKGROUND_0 */
+ uint cursor_start_addr; /* _DISP_CURSOR_START_ADDR_0 */
+ uint cursor_start_addr_ns; /* _DISP_CURSOR_START_ADDR_NS_0 */
+ uint cursor_pos; /* _DISP_CURSOR_POSITION_0 */
+ uint cursor_pos_ns; /* _DISP_CURSOR_POSITION_NS_0 */
+ uint seq_ctrl; /* _DISP_INIT_SEQ_CONTROL_0 */
+
+ /* Address 0x442 ~ 0x446 */
+ uint spi_init_seq_data_a; /* _DISP_SPI_INIT_SEQ_DATA_A_0 */
+ uint spi_init_seq_data_b; /* _DISP_SPI_INIT_SEQ_DATA_B_0 */
+ uint spi_init_seq_data_c; /* _DISP_SPI_INIT_SEQ_DATA_C_0 */
+ uint spi_init_seq_data_d; /* _DISP_SPI_INIT_SEQ_DATA_D_0 */
+
+ uint reserved1[0x39]; /* reserved1[0x39], */
+
+ /* Address 0x480 ~ 0x484 */
+ uint dc_mccif_fifoctrl; /* _DISP_DC_MCCIF_FIFOCTRL_0 */
+ uint mccif_disp0a_hyst; /* _DISP_MCCIF_DISPLAY0A_HYST_0 */
+ uint mccif_disp0b_hyst; /* _DISP_MCCIF_DISPLAY0B_HYST_0 */
+ uint mccif_disp0c_hyst; /* _DISP_MCCIF_DISPLAY0C_HYST_0 */
+ uint mccif_disp1b_hyst; /* _DISP_MCCIF_DISPLAY1B_HYST_0 */
+
+ uint reserved2[0x3b]; /* reserved2[0x3b] */
+
+ /* Address 0x4c0 ~ 0x4c1 */
+ uint dac_crt_ctrl; /* _DISP_DAC_CRT_CTRL_0 */
+ uint disp_misc_ctrl; /* _DISP_DISP_MISC_CONTROL_0 */
+};
+
+enum dc_winc_filter_p {
+ WINC_FILTER_COUNT = 0x10,
+};
+
+/* Window A/B/C register 0x500 ~ 0x628 */
+struct dc_winc_reg {
+
+ /* Address 0x500 */
+ uint color_palette; /* _WINC_COLOR_PALETTE_0 */
+
+ uint reserved0[0xff]; /* reserved_0[0xff] */
+
+ /* Address 0x600 */
+ uint palette_color_ext; /* _WINC_PALETTE_COLOR_EXT_0 */
+
+ /* _WINC_H_FILTER_P00~0F_0 */
+ /* Address 0x601 ~ 0x610 */
+ uint h_filter_p[WINC_FILTER_COUNT];
+
+ /* Address 0x611 ~ 0x618 */
+ uint csc_yof; /* _WINC_CSC_YOF_0 */
+ uint csc_kyrgb; /* _WINC_CSC_KYRGB_0 */
+ uint csc_kur; /* _WINC_CSC_KUR_0 */
+ uint csc_kvr; /* _WINC_CSC_KVR_0 */
+ uint csc_kug; /* _WINC_CSC_KUG_0 */
+ uint csc_kvg; /* _WINC_CSC_KVG_0 */
+ uint csc_kub; /* _WINC_CSC_KUB_0 */
+ uint csc_kvb; /* _WINC_CSC_KVB_0 */
+
+ /* Address 0x619 ~ 0x628: _WINC_V_FILTER_P00~0F_0 */
+ uint v_filter_p[WINC_FILTER_COUNT];
+};
+
+/* WIN A/B/C Register 0x700 ~ 0x714*/
+struct dc_win_reg {
+ /* Address 0x700 ~ 0x714 */
+ uint win_opt; /* _WIN_WIN_OPTIONS_0 */
+ uint byte_swap; /* _WIN_BYTE_SWAP_0 */
+ uint buffer_ctrl; /* _WIN_BUFFER_CONTROL_0 */
+ uint color_depth; /* _WIN_COLOR_DEPTH_0 */
+ uint pos; /* _WIN_POSITION_0 */
+ uint size; /* _WIN_SIZE_0 */
+ uint prescaled_size; /* _WIN_PRESCALED_SIZE_0 */
+ uint h_initial_dda; /* _WIN_H_INITIAL_DDA_0 */
+ uint v_initial_dda; /* _WIN_V_INITIAL_DDA_0 */
+ uint dda_increment; /* _WIN_DDA_INCREMENT_0 */
+ uint line_stride; /* _WIN_LINE_STRIDE_0 */
+ uint buf_stride; /* _WIN_BUF_STRIDE_0 */
+ uint uv_buf_stride; /* _WIN_UV_BUF_STRIDE_0 */
+ uint buffer_addr_mode; /* _WIN_BUFFER_ADDR_MODE_0 */
+ uint dv_ctrl; /* _WIN_DV_CONTROL_0 */
+ uint blend_nokey; /* _WIN_BLEND_NOKEY_0 */
+ uint blend_1win; /* _WIN_BLEND_1WIN_0 */
+ uint blend_2win_x; /* _WIN_BLEND_2WIN_X_0 */
+ uint blend_2win_y; /* _WIN_BLEND_2WIN_Y_0 */
+ uint blend_3win_xy; /* _WIN_BLEND_3WIN_XY_0 */
+ uint hp_fetch_ctrl; /* _WIN_HP_FETCH_CONTROL_0 */
+};
+
+/* WINBUF A/B/C Register 0x800 ~ 0x80a */
+struct dc_winbuf_reg {
+ /* Address 0x800 ~ 0x80a */
+ uint start_addr; /* _WINBUF_START_ADDR_0 */
+ uint start_addr_ns; /* _WINBUF_START_ADDR_NS_0 */
+ uint start_addr_u; /* _WINBUF_START_ADDR_U_0 */
+ uint start_addr_u_ns; /* _WINBUF_START_ADDR_U_NS_0 */
+ uint start_addr_v; /* _WINBUF_START_ADDR_V_0 */
+ uint start_addr_v_ns; /* _WINBUF_START_ADDR_V_NS_0 */
+ uint addr_h_offset; /* _WINBUF_ADDR_H_OFFSET_0 */
+ uint addr_h_offset_ns; /* _WINBUF_ADDR_H_OFFSET_NS_0 */
+ uint addr_v_offset; /* _WINBUF_ADDR_V_OFFSET_0 */
+ uint addr_v_offset_ns; /* _WINBUF_ADDR_V_OFFSET_NS_0 */
+ uint uflow_status; /* _WINBUF_UFLOW_STATUS_0 */
+};
+
+/* Display Controller (DC_) regs */
+struct dc_ctlr {
+ struct dc_cmd_reg cmd; /* CMD register 0x000 ~ 0x43 */
+ uint reserved0[0x2bc];
+
+ struct dc_com_reg com; /* COM register 0x300 ~ 0x329 */
+ uint reserved1[0xd6];
+
+ struct dc_disp_reg disp; /* DISP register 0x400 ~ 0x4c1 */
+ uint reserved2[0x3e];
+
+ struct dc_winc_reg winc; /* Window A/B/C 0x500 ~ 0x628 */
+ uint reserved3[0xd7];
+
+ struct dc_win_reg win; /* WIN A/B/C 0x700 ~ 0x714*/
+ uint reserved4[0xeb];
+
+ struct dc_winbuf_reg winbuf; /* WINBUF A/B/C 0x800 ~ 0x80a */
+};
+
+#define BIT(pos) (1U << pos)
+
+/* DC_CMD_DISPLAY_COMMAND 0x032 */
+#define CTRL_MODE_SHIFT 5
+#define CTRL_MODE_MASK (0x3 << CTRL_MODE_SHIFT)
+enum {
+ CTRL_MODE_STOP,
+ CTRL_MODE_C_DISPLAY,
+ CTRL_MODE_NC_DISPLAY,
+};
+
+/* _WIN_COLOR_DEPTH_0 */
+enum win_color_depth_id {
+ COLOR_DEPTH_P1,
+ COLOR_DEPTH_P2,
+ COLOR_DEPTH_P4,
+ COLOR_DEPTH_P8,
+ COLOR_DEPTH_B4G4R4A4,
+ COLOR_DEPTH_B5G5R5A,
+ COLOR_DEPTH_B5G6R5,
+ COLOR_DEPTH_AB5G5R5,
+ COLOR_DEPTH_B8G8R8A8 = 12,
+ COLOR_DEPTH_R8G8B8A8,
+ COLOR_DEPTH_B6x2G6x2R6x2A8,
+ COLOR_DEPTH_R6x2G6x2B6x2A8,
+ COLOR_DEPTH_YCbCr422,
+ COLOR_DEPTH_YUV422,
+ COLOR_DEPTH_YCbCr420P,
+ COLOR_DEPTH_YUV420P,
+ COLOR_DEPTH_YCbCr422P,
+ COLOR_DEPTH_YUV422P,
+ COLOR_DEPTH_YCbCr422R,
+ COLOR_DEPTH_YUV422R,
+ COLOR_DEPTH_YCbCr422RA,
+ COLOR_DEPTH_YUV422RA,
+};
+
+/* DC_CMD_DISPLAY_POWER_CONTROL 0x036 */
+#define PW0_ENABLE BIT(0)
+#define PW1_ENABLE BIT(2)
+#define PW2_ENABLE BIT(4)
+#define PW3_ENABLE BIT(6)
+#define PW4_ENABLE BIT(8)
+#define PM0_ENABLE BIT(16)
+#define PM1_ENABLE BIT(18)
+#define SPI_ENABLE BIT(24)
+#define HSPI_ENABLE BIT(25)
+
+/* DC_CMD_STATE_CONTROL 0x041 */
+#define GENERAL_ACT_REQ BIT(0)
+#define WIN_A_ACT_REQ BIT(1)
+#define WIN_B_ACT_REQ BIT(2)
+#define WIN_C_ACT_REQ BIT(3)
+#define GENERAL_UPDATE BIT(8)
+#define WIN_A_UPDATE BIT(9)
+#define WIN_B_UPDATE BIT(10)
+#define WIN_C_UPDATE BIT(11)
+
+/* DC_CMD_DISPLAY_WINDOW_HEADER 0x042 */
+#define WINDOW_A_SELECT BIT(4)
+#define WINDOW_B_SELECT BIT(5)
+#define WINDOW_C_SELECT BIT(6)
+
+/* DC_DISP_DISP_CLOCK_CONTROL 0x42e */
+#define SHIFT_CLK_DIVIDER_SHIFT 0
+#define SHIFT_CLK_DIVIDER_MASK (0xff << SHIFT_CLK_DIVIDER_SHIFT)
+#define PIXEL_CLK_DIVIDER_SHIFT 8
+#define PIXEL_CLK_DIVIDER_MSK (0xf << PIXEL_CLK_DIVIDER_SHIFT)
+enum {
+ PIXEL_CLK_DIVIDER_PCD1,
+ PIXEL_CLK_DIVIDER_PCD1H,
+ PIXEL_CLK_DIVIDER_PCD2,
+ PIXEL_CLK_DIVIDER_PCD3,
+ PIXEL_CLK_DIVIDER_PCD4,
+ PIXEL_CLK_DIVIDER_PCD6,
+ PIXEL_CLK_DIVIDER_PCD8,
+ PIXEL_CLK_DIVIDER_PCD9,
+ PIXEL_CLK_DIVIDER_PCD12,
+ PIXEL_CLK_DIVIDER_PCD16,
+ PIXEL_CLK_DIVIDER_PCD18,
+ PIXEL_CLK_DIVIDER_PCD24,
+ PIXEL_CLK_DIVIDER_PCD13,
+};
+
+/* DC_DISP_DISP_INTERFACE_CONTROL 0x42f */
+#define DATA_FORMAT_SHIFT 0
+#define DATA_FORMAT_MASK (0xf << DATA_FORMAT_SHIFT)
+enum {
+ DATA_FORMAT_DF1P1C,
+ DATA_FORMAT_DF1P2C24B,
+ DATA_FORMAT_DF1P2C18B,
+ DATA_FORMAT_DF1P2C16B,
+ DATA_FORMAT_DF2S,
+ DATA_FORMAT_DF3S,
+ DATA_FORMAT_DFSPI,
+ DATA_FORMAT_DF1P3C24B,
+ DATA_FORMAT_DF1P3C18B,
+};
+#define DATA_ALIGNMENT_SHIFT 8
+enum {
+ DATA_ALIGNMENT_MSB,
+ DATA_ALIGNMENT_LSB,
+};
+#define DATA_ORDER_SHIFT 9
+enum {
+ DATA_ORDER_RED_BLUE,
+ DATA_ORDER_BLUE_RED,
+};
+
+/* DC_DISP_DATA_ENABLE_OPTIONS 0x432 */
+#define DE_SELECT_SHIFT 0
+#define DE_SELECT_MASK (0x3 << DE_SELECT_SHIFT)
+#define DE_SELECT_ACTIVE_BLANK 0x0
+#define DE_SELECT_ACTIVE 0x1
+#define DE_SELECT_ACTIVE_IS 0x2
+#define DE_CONTROL_SHIFT 2
+#define DE_CONTROL_MASK (0x7 << DE_CONTROL_SHIFT)
+enum {
+ DE_CONTROL_ONECLK,
+ DE_CONTROL_NORMAL,
+ DE_CONTROL_EARLY_EXT,
+ DE_CONTROL_EARLY,
+ DE_CONTROL_ACTIVE_BLANK,
+};
+
+/* DC_WIN_WIN_OPTIONS 0x700 */
+#define H_DIRECTION BIT(0)
+enum {
+ H_DIRECTION_INCREMENT,
+ H_DIRECTION_DECREMENT,
+};
+#define V_DIRECTION BIT(2)
+enum {
+ V_DIRECTION_INCREMENT,
+ V_DIRECTION_DECREMENT,
+};
+#define COLOR_EXPAND BIT(6)
+#define CP_ENABLE BIT(16)
+#define DV_ENABLE BIT(20)
+#define WIN_ENABLE BIT(30)
+
+/* DC_WIN_BYTE_SWAP 0x701 */
+#define BYTE_SWAP_SHIFT 0
+#define BYTE_SWAP_MASK (3 << BYTE_SWAP_SHIFT)
+enum {
+ BYTE_SWAP_NOSWAP,
+ BYTE_SWAP_SWAP2,
+ BYTE_SWAP_SWAP4,
+ BYTE_SWAP_SWAP4HW
+};
+
+/* DC_WIN_POSITION 0x704 */
+#define H_POSITION_SHIFT 0
+#define H_POSITION_MASK (0x1FFF << H_POSITION_SHIFT)
+#define V_POSITION_SHIFT 16
+#define V_POSITION_MASK (0x1FFF << V_POSITION_SHIFT)
+
+/* DC_WIN_SIZE 0x705 */
+#define H_SIZE_SHIFT 0
+#define H_SIZE_MASK (0x1FFF << H_SIZE_SHIFT)
+#define V_SIZE_SHIFT 16
+#define V_SIZE_MASK (0x1FFF << V_SIZE_SHIFT)
+
+/* DC_WIN_PRESCALED_SIZE 0x706 */
+#define H_PRESCALED_SIZE_SHIFT 0
+#define H_PRESCALED_SIZE_MASK (0x7FFF << H_PRESCALED_SIZE)
+#define V_PRESCALED_SIZE_SHIFT 16
+#define V_PRESCALED_SIZE_MASK (0x1FFF << V_PRESCALED_SIZE)
+
+/* DC_WIN_DDA_INCREMENT 0x709 */
+#define H_DDA_INC_SHIFT 0
+#define H_DDA_INC_MASK (0xFFFF << H_DDA_INC_SHIFT)
+#define V_DDA_INC_SHIFT 16
+#define V_DDA_INC_MASK (0xFFFF << V_DDA_INC_SHIFT)
+
+#endif /* __ASM_ARCH_TEGRA_DC_H */
diff --git a/arch/arm/include/asm/arch-tegra20/display.h b/arch/arm/include/asm/arch-tegra20/display.h
new file mode 100644
index 0000000..c870959
--- /dev/null
+++ b/arch/arm/include/asm/arch-tegra20/display.h
@@ -0,0 +1,152 @@
+/*
+ * (C) Copyright 2010
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * 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
+ */
+
+#ifndef __ASM_ARCH_TEGRA_DISPLAY_H
+#define __ASM_ARCH_TEGRA_DISPLAY_H
+
+#include <asm/arch/dc.h>
+#include <fdtdec.h>
+
+/* This holds information about a window which can be displayed */
+struct disp_ctl_win {
+ enum win_color_depth_id fmt; /* Color depth/format */
+ unsigned bpp; /* Bits per pixel */
+ phys_addr_t phys_addr; /* Physical address in memory */
+ unsigned x; /* Horizontal address offset (bytes) */
+ unsigned y; /* Veritical address offset (bytes) */
+ unsigned w; /* Width of source window */
+ unsigned h; /* Height of source window */
+ unsigned stride; /* Number of bytes per line */
+ unsigned out_x; /* Left edge of output window (col) */
+ unsigned out_y; /* Top edge of output window (row) */
+ unsigned out_w; /* Width of output window in pixels */
+ unsigned out_h; /* Height of output window in pixels */
+};
+
+#define FDT_LCD_TIMINGS 4
+
+enum {
+ FDT_LCD_TIMING_REF_TO_SYNC,
+ FDT_LCD_TIMING_SYNC_WIDTH,
+ FDT_LCD_TIMING_BACK_PORCH,
+ FDT_LCD_TIMING_FRONT_PORCH,
+
+ FDT_LCD_TIMING_COUNT,
+};
+
+enum lcd_cache_t {
+ FDT_LCD_CACHE_OFF = 0,
+ FDT_LCD_CACHE_WRITE_THROUGH = 1 << 0,
+ FDT_LCD_CACHE_WRITE_BACK = 1 << 1,
+ FDT_LCD_CACHE_FLUSH = 1 << 2,
+ FDT_LCD_CACHE_WRITE_BACK_FLUSH = FDT_LCD_CACHE_WRITE_BACK |
+ FDT_LCD_CACHE_FLUSH,
+};
+
+/* Information about the display controller */
+struct fdt_disp_config {
+ int valid; /* config is valid */
+ int width; /* width in pixels */
+ int height; /* height in pixels */
+ int bpp; /* number of bits per pixel */
+
+ /*
+ * log2 of number of bpp, in general, unless it bpp is 24 in which
+ * case this field holds 24 also! This is a U-Boot thing.
+ */
+ int log2_bpp;
+ struct disp_ctlr *disp; /* Display controller to use */
+ fdt_addr_t frame_buffer; /* Address of frame buffer */
+ unsigned pixel_clock; /* Pixel clock in Hz */
+ uint horiz_timing[FDT_LCD_TIMING_COUNT]; /* Horizontal timing */
+ uint vert_timing[FDT_LCD_TIMING_COUNT]; /* Vertical timing */
+ int panel_node; /* node offset of panel information */
+};
+
+/* Information about the LCD panel */
+struct fdt_panel_config {
+ int pwm_channel; /* PWM channel to use for backlight */
+ enum lcd_cache_t cache_type;
+
+ struct fdt_gpio_state backlight_en; /* GPIO for backlight enable */
+ struct fdt_gpio_state lvds_shutdown; /* GPIO for lvds shutdown */
+ struct fdt_gpio_state backlight_vdd; /* GPIO for backlight vdd */
+ struct fdt_gpio_state panel_vdd; /* GPIO for panel vdd */
+ /*
+ * Panel required timings
+ * Timing 1: delay between panel_vdd-rise and data-rise
+ * Timing 2: delay between data-rise and backlight_vdd-rise
+ * Timing 3: delay between backlight_vdd and pwm-rise
+ * Timing 4: delay between pwm-rise and backlight_en-rise
+ */
+ uint panel_timings[FDT_LCD_TIMINGS];
+};
+
+/**
+ * Register a new display based on device tree configuration.
+ *
+ * The frame buffer can be positioned by U-Boot or overriden by the fdt.
+ * You should pass in the U-Boot address here, and check the contents of
+ * struct fdt_disp_config to see what was actually chosen.
+ *
+ * @param blob Device tree blob
+ * @param default_lcd_base Default address of LCD frame buffer
+ * @return 0 if ok, -1 on error (unsupported bits per pixel)
+ */
+int tegra_display_probe(const void *blob, void *default_lcd_base);
+
+/**
+ * Return the current display configuration
+ *
+ * @return pointer to display configuration, or NULL if there is no valid
+ * config
+ */
+struct fdt_disp_config *tegra_display_get_config(void);
+
+/**
+ * Perform the next stage of the LCD init if it is time to do so.
+ *
+ * LCD init can be time-consuming because of the number of delays we need
+ * while waiting for the backlight power supply, etc. This function can
+ * be called at various times during U-Boot operation to advance the
+ * initialization of the LCD to the next stage if sufficient time has
+ * passed since the last stage. It keeps track of what stage it is up to
+ * and the time that it is permitted to move to the next stage.
+ *
+ * The final call should have wait=1 to complete the init.
+ *
+ * @param blob fdt blob containing LCD information
+ * @param wait 1 to wait until all init is complete, and then return
+ * 0 to return immediately, potentially doing nothing if it is
+ * not yet time for the next init.
+ */
+int tegra_lcd_check_next_stage(const void *blob, int wait);
+
+/**
+ * Set up the maximum LCD size so we can size the frame buffer.
+ *
+ * @param blob fdt blob containing LCD information
+ */
+void tegra_lcd_early_init(const void *blob);
+
+#endif /*__ASM_ARCH_TEGRA_DISPLAY_H*/
diff --git a/include/fdtdec.h b/include/fdtdec.h
index cdc87eb..64e5cff 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -67,6 +67,7 @@ enum fdt_compat_id {
COMPAT_NVIDIA_TEGRA20_KBC, /* Tegra20 Keyboard */
COMPAT_NVIDIA_TEGRA20_NAND, /* Tegra2 NAND controller */
COMPAT_NVIDIA_TEGRA20_PWM, /* Tegra 2 PWM controller */
+ COMPAT_NVIDIA_TEGRA20_DC, /* Tegra 2 Display controller */
COMPAT_COUNT,
};
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 947f7c0..23e0205 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -44,6 +44,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
COMPAT(NVIDIA_TEGRA20_KBC, "nvidia,tegra20-kbc"),
COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"),
+ COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"),
};
const char *fdtdec_get_compatible(enum fdt_compat_id id)
--
1.7.7.3
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