[U-Boot] [PATCH v3] OMAP3: Add DSS driver for OMAP3
Jason Kridner
jkridner at beagleboard.org
Thu Apr 21 01:52:48 CEST 2011
From: Syed Mohammed Khasim <khasim at ti.com>
Supports dynamic panel configuration
Supports dynamic tv standard selection
Adds support for DSS register access through generic APIs
Incorporated DSS register access using structures.
Previous discussions are here
http://www.mail-archive.com/u-boot@lists.denx.de/msg27150.html
---
v2 updates:
* Enable panel output for BeagleBoard
* BeagleBoard: Update DVI-D orange screen frequencies for xM
v3 updates:
* Remove non-platform (OMAP3) updates
Signed-off-by: Syed Mohammed Khasim <khasim at ti.com>
Signed-off-by: Jason Kridner <jkridner at beagleboard.org>
---
arch/arm/include/asm/arch-omap3/dss.h | 173 +++++++++++++++++++++++++++++++++
drivers/video/omap3_dss.c | 130 +++++++++++++++++++++++++
2 files changed, 303 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/include/asm/arch-omap3/dss.h
create mode 100644 drivers/video/omap3_dss.c
diff --git a/arch/arm/include/asm/arch-omap3/dss.h b/arch/arm/include/asm/arch-omap3/dss.h
new file mode 100644
index 0000000..e5e3b0d
--- /dev/null
+++ b/arch/arm/include/asm/arch-omap3/dss.h
@@ -0,0 +1,173 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ * Syed Mohammed Khasim <khasim at ti.com>
+ *
+ * Referred to Linux DSS driver files for OMAP3
+ *
+ * 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's version 2 of
+ * the License.
+ *
+ * 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 DSS_H
+#define DSS_H
+
+/*
+ * DSS Base Registers
+ */
+#define OMAP3_DSS_BASE 0x48050040
+#define OMAP3_DISPC_BASE 0x48050440
+#define OMAP3_VENC_BASE 0x48050C00
+
+/* DSS Registers */
+struct dss_regs {
+ u32 control; /* 0x40 */
+ u32 sdi_control; /* 0x44 */
+ u32 pll_control; /* 0x48 */
+};
+
+/* DISPC Registers */
+struct dispc_regs {
+ u32 control; /* 0x40 */
+ u32 config; /* 0x44 */
+ u32 reserve_2; /* 0x48 */
+ u32 default_color0; /* 0x4C */
+ u32 default_color1; /* 0x50 */
+ u32 trans_color0; /* 0x54 */
+ u32 trans_color1; /* 0x58 */
+ u32 line_status; /* 0x5C */
+ u32 line_number; /* 0x60 */
+ u32 timing_h; /* 0x64 */
+ u32 timing_v; /* 0x68 */
+ u32 pol_freq; /* 0x6C */
+ u32 divisor; /* 0x70 */
+ u32 global_alpha; /* 0x74 */
+ u32 size_dig; /* 0x78 */
+ u32 size_lcd; /* 0x7C */
+};
+
+/* VENC Registers */
+struct venc_regs {
+ u32 rev_id; /* 0x00 */
+ u32 status; /* 0x04 */
+ u32 f_control; /* 0x08 */
+ u32 reserve_1; /* 0x0C */
+ u32 vidout_ctrl; /* 0x10 */
+ u32 sync_ctrl; /* 0x14 */
+ u32 reserve_2; /* 0x18 */
+ u32 llen; /* 0x1C */
+ u32 flens; /* 0x20 */
+ u32 hfltr_ctrl; /* 0x24 */
+ u32 cc_carr_wss_carr; /* 0x28 */
+ u32 c_phase; /* 0x2C */
+ u32 gain_u; /* 0x30 */
+ u32 gain_v; /* 0x34 */
+ u32 gain_y; /* 0x38 */
+ u32 black_level; /* 0x3C */
+ u32 blank_level; /* 0x40 */
+ u32 x_color; /* 0x44 */
+ u32 m_control; /* 0x48 */
+ u32 bstamp_wss_data; /* 0x4C */
+ u32 s_carr; /* 0x50 */
+ u32 line21; /* 0x54 */
+ u32 ln_sel; /* 0x58 */
+ u32 l21__wc_ctl; /* 0x5C */
+ u32 htrigger_vtrigger; /* 0x60 */
+ u32 savid__eavid; /* 0x64 */
+ u32 flen__fal; /* 0x68 */
+ u32 lal__phase_reset; /* 0x6C */
+ u32 hs_int_start_stop_x; /* 0x70 */
+ u32 hs_ext_start_stop_x; /* 0x74 */
+ u32 vs_int_start_x; /* 0x78 */
+ u32 vs_int_stop_x__vs_int_start_y; /* 0x7C */
+ u32 vs_int_stop_y__vs_ext_start_x; /* 0x80 */
+ u32 vs_ext_stop_x__vs_ext_start_y; /* 0x84 */
+ u32 vs_ext_stop_y; /* 0x88 */
+ u32 reserve_3; /* 0x8C */
+ u32 avid_start_stop_x; /* 0x90 */
+ u32 avid_start_stop_y; /* 0x94 */
+ u32 reserve_4; /* 0x98 */
+ u32 reserve_5; /* 0x9C */
+ u32 fid_int_start_x__fid_int_start_y; /* 0xA0 */
+ u32 fid_int_offset_y__fid_ext_start_x; /* 0xA4 */
+ u32 fid_ext_start_y__fid_ext_offset_y; /* 0xA8 */
+ u32 reserve_6; /* 0xAC */
+ u32 tvdetgp_int_start_stop_x; /* 0xB0 */
+ u32 tvdetgp_int_start_stop_y; /* 0xB4 */
+ u32 gen_ctrl; /* 0xB8 */
+ u32 reserve_7; /* 0xBC */
+ u32 reserve_8; /* 0xC0 */
+ u32 output_control; /* 0xC4 */
+ u32 dac_b__dac_c; /* 0xC8 */
+ u32 height_width; /* 0xCC */
+};
+
+/* Few Register Offsets */
+#define FRAME_MODE_SHIFT 1
+#define TFTSTN_SHIFT 3
+#define DATALINES_SHIFT 8
+
+/* Enabling Display controller */
+#define LCD_ENABLE 1
+#define DIG_ENABLE (1 << 1)
+#define GO_LCD (1 << 5)
+#define GO_DIG (1 << 6)
+#define GP_OUT0 (1 << 15)
+#define GP_OUT1 (1 << 16)
+
+#define DISPC_ENABLE (LCD_ENABLE | \
+ DIG_ENABLE | \
+ GO_LCD | \
+ GO_DIG | \
+ GP_OUT0| \
+ GP_OUT1)
+
+/* Configure VENC DSS Params */
+#define VENC_CLK_ENABLE (1 << 3)
+#define DAC_DEMEN (1 << 4)
+#define DAC_POWERDN (1 << 5)
+#define VENC_OUT_SEL (1 << 6)
+#define DIG_LPP_SHIFT 16
+#define VENC_DSS_CONFIG (VENC_CLK_ENABLE | \
+ DAC_DEMEN | \
+ DAC_POWERDN | \
+ VENC_OUT_SEL)
+/*
+ * Panel Configuration
+ */
+struct panel_config {
+ u32 timing_h;
+ u32 timing_v;
+ u32 pol_freq;
+ u32 divisor;
+ u32 lcd_size;
+ u32 panel_type;
+ u32 data_lines;
+ u32 load_mode;
+ u32 panel_color;
+};
+
+/*
+ * Generic DSS Functions
+ */
+void omap3_dss_venc_config(const struct venc_regs *venc_cfg,
+ u32 height, u32 width);
+void omap3_dss_panel_config(const struct panel_config *panel_cfg);
+void omap3_dss_enable(void);
+
+#endif /* DSS_H */
diff --git a/drivers/video/omap3_dss.c b/drivers/video/omap3_dss.c
new file mode 100644
index 0000000..69c705a
--- /dev/null
+++ b/drivers/video/omap3_dss.c
@@ -0,0 +1,130 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ * Syed Mohammed Khasim <khasim at ti.com>
+ *
+ * Referred to Linux DSS driver files for OMAP3
+ *
+ * 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's version 2 of
+ * the License.
+ *
+ * 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/dss.h>
+
+/*
+ * Configure VENC for a given Mode (NTSC / PAL)
+ */
+void omap3_dss_venc_config(const struct venc_regs *venc_cfg,
+ u32 height, u32 width)
+{
+ struct venc_regs *venc = (struct venc_regs *) OMAP3_VENC_BASE;
+ struct dss_regs *dss = (struct dss_regs *) OMAP3_DSS_BASE;
+ struct dispc_regs *dispc = (struct dispc_regs *) OMAP3_DISPC_BASE;
+
+ writel(venc_cfg->status, &venc->status);
+ writel(venc_cfg->f_control, &venc->f_control);
+ writel(venc_cfg->vidout_ctrl, &venc->vidout_ctrl);
+ writel(venc_cfg->sync_ctrl, &venc->sync_ctrl);
+ writel(venc_cfg->llen, &venc->llen);
+ writel(venc_cfg->flens, &venc->flens);
+ writel(venc_cfg->hfltr_ctrl, &venc->hfltr_ctrl);
+ writel(venc_cfg->cc_carr_wss_carr, &venc->cc_carr_wss_carr);
+ writel(venc_cfg->c_phase, &venc->c_phase);
+ writel(venc_cfg->gain_u, &venc->gain_u);
+ writel(venc_cfg->gain_v, &venc->gain_v);
+ writel(venc_cfg->gain_y, &venc->gain_y);
+ writel(venc_cfg->black_level, &venc->black_level);
+ writel(venc_cfg->blank_level, &venc->blank_level);
+ writel(venc_cfg->x_color, &venc->x_color);
+ writel(venc_cfg->m_control, &venc->m_control);
+ writel(venc_cfg->bstamp_wss_data, &venc->bstamp_wss_data);
+ writel(venc_cfg->s_carr, &venc->s_carr);
+ writel(venc_cfg->line21, &venc->line21);
+ writel(venc_cfg->ln_sel, &venc->ln_sel);
+ writel(venc_cfg->l21__wc_ctl, &venc->l21__wc_ctl);
+ writel(venc_cfg->htrigger_vtrigger, &venc->htrigger_vtrigger);
+ writel(venc_cfg->savid__eavid, &venc->savid__eavid);
+ writel(venc_cfg->flen__fal, &venc->flen__fal);
+ writel(venc_cfg->lal__phase_reset, &venc->lal__phase_reset);
+ writel(venc_cfg->hs_int_start_stop_x,
+ &venc->hs_int_start_stop_x);
+ writel(venc_cfg->hs_ext_start_stop_x,
+ &venc->hs_ext_start_stop_x);
+ writel(venc_cfg->vs_int_start_x, &venc->vs_int_start_x);
+ writel(venc_cfg->vs_int_stop_x__vs_int_start_y,
+ &venc->vs_int_stop_x__vs_int_start_y);
+ writel(venc_cfg->vs_int_stop_y__vs_ext_start_x,
+ &venc->vs_int_stop_y__vs_ext_start_x);
+ writel(venc_cfg->vs_ext_stop_x__vs_ext_start_y,
+ &venc->vs_ext_stop_x__vs_ext_start_y);
+ writel(venc_cfg->vs_ext_stop_y, &venc->vs_ext_stop_y);
+ writel(venc_cfg->avid_start_stop_x, &venc->avid_start_stop_x);
+ writel(venc_cfg->avid_start_stop_y, &venc->avid_start_stop_y);
+ writel(venc_cfg->fid_int_start_x__fid_int_start_y,
+ &venc->fid_int_start_x__fid_int_start_y);
+ writel(venc_cfg->fid_int_offset_y__fid_ext_start_x,
+ &venc->fid_int_offset_y__fid_ext_start_x);
+ writel(venc_cfg->fid_ext_start_y__fid_ext_offset_y,
+ &venc->fid_ext_start_y__fid_ext_offset_y);
+ writel(venc_cfg->tvdetgp_int_start_stop_x,
+ &venc->tvdetgp_int_start_stop_x);
+ writel(venc_cfg->tvdetgp_int_start_stop_y,
+ &venc->tvdetgp_int_start_stop_y);
+ writel(venc_cfg->gen_ctrl, &venc->gen_ctrl);
+ writel(venc_cfg->output_control, &venc->output_control);
+ writel(venc_cfg->dac_b__dac_c, &venc->dac_b__dac_c);
+
+ /* Configure DSS for VENC Settings */
+ writel(VENC_DSS_CONFIG, &dss->control);
+
+ /* Configure height and width for Digital out */
+ writel(((height << DIG_LPP_SHIFT) | width), &dispc->size_dig);
+}
+
+/*
+ * Configure Panel Specific Parameters
+ */
+void omap3_dss_panel_config(const struct panel_config *panel_cfg)
+{
+ struct dispc_regs *dispc = (struct dispc_regs *) OMAP3_DISPC_BASE;
+
+ writel(panel_cfg->timing_h, &dispc->timing_h);
+ writel(panel_cfg->timing_v, &dispc->timing_v);
+ writel(panel_cfg->pol_freq, &dispc->pol_freq);
+ writel(panel_cfg->divisor, &dispc->divisor);
+ writel(panel_cfg->lcd_size, &dispc->size_lcd);
+ writel((panel_cfg->load_mode << FRAME_MODE_SHIFT), &dispc->config);
+ writel(((panel_cfg->panel_type << TFTSTN_SHIFT) |
+ (panel_cfg->data_lines << DATALINES_SHIFT)), &dispc->control);
+ writel(panel_cfg->panel_color, &dispc->default_color0);
+}
+
+/*
+ * Enable LCD and DIGITAL OUT in DSS
+ */
+void omap3_dss_enable(void)
+{
+ struct dispc_regs *dispc = (struct dispc_regs *) OMAP3_DISPC_BASE;
+ u32 l = 0;
+
+ l = readl(&dispc->control);
+ l |= DISPC_ENABLE;
+ writel(l, &dispc->control);
+}
--
1.5.6.4
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