tegra: video: Merge the display driver into one file

At present we have code in arch/arm and code in drivers/video. Move it all
into drivers/video since it is a display driver and our current approach is
to put all driver code in drivers/.

Make a few functions static now that they are not used outside the file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>

2 files changed, 0 insertions, 380 deletions

diff --git a/arch/arm/mach-tegra/tegra20/Makefile b/arch/arm/mach-tegra/tegra20/Makefile
index efcf843..17c1990 100644
--- a/arch/arm/mach-tegra/tegra20/Makefile
+++ b/arch/arm/mach-tegra/tegra20/Makefile
@@ -6,8 +6,6 @@
 
 ifdef CONFIG_SPL_BUILD
 obj-y	+= cpu.o
-else
-obj-$(CONFIG_VIDEO_TEGRA20) += display.o
 endif
 
 # The AVP is ARMv4T architecture so we must use special compiler
diff --git a/arch/arm/mach-tegra/tegra20/display.c b/arch/arm/mach-tegra/tegra20/display.c
index b7605ff..73be9a9 100644
--- a/arch/arm/mach-tegra/tegra20/display.c
+++ b/arch/arm/mach-tegra/tegra20/display.c
@@ -14,381 +14,3 @@
 #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, 1U);
-	v_dda = (win->h * 0x1000) / max(win->out_h - 1, 1U);
-
-	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]);
-}
-
-static 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;
-}