linux-omap git: add dss2 and cache patches

1 files changed, 410 insertions, 0 deletions

diff --git a/recipes/linux/linux-omap-2.6.31/dss2/0010-OMAP-DSS2-DPI-driver.patch b/recipes/linux/linux-omap-2.6.31/dss2/0010-OMAP-DSS2-DPI-driver.patch
new file mode 100644
index 0000000000..db6d780552
--- /dev/null
+++ b/recipes/linux/linux-omap-2.6.31/dss2/0010-OMAP-DSS2-DPI-driver.patch
@@ -0,0 +1,410 @@
+From 544b715d21a38a64bcafe850e31ae0dfd5227e9f Mon Sep 17 00:00:00 2001
+From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+Date: Fri, 7 Aug 2009 13:15:50 +0300
+Subject: [PATCH 10/18] OMAP: DSS2: DPI driver
+
+This implements MIPI DPI interface.
+
+Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+---
+ drivers/video/omap2/dss/dpi.c |  388 +++++++++++++++++++++++++++++++++++++++++
+ 1 files changed, 388 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/video/omap2/dss/dpi.c
+
+diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c
+new file mode 100644
+index 0000000..b6543c8
+--- /dev/null
++++ b/drivers/video/omap2/dss/dpi.c
+@@ -0,0 +1,388 @@
++/*
++ * linux/drivers/video/omap2/dss/dpi.c
++ *
++ * Copyright (C) 2009 Nokia Corporation
++ * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
++ *
++ * Some code and ideas taken from drivers/video/omap/ driver
++ * by Imre Deak.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * 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, see <http://www.gnu.org/licenses/>.
++ */
++
++#define DSS_SUBSYS_NAME "DPI"
++
++#include <linux/kernel.h>
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/errno.h>
++
++#include <mach/board.h>
++#include <mach/display.h>
++#include <mach/cpu.h>
++
++#include "dss.h"
++
++static struct {
++	int update_enabled;
++} dpi;
++
++#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
++static int dpi_set_dsi_clk(bool is_tft, unsigned long pck_req,
++		unsigned long *fck, int *lck_div, int *pck_div)
++{
++	struct dsi_clock_info cinfo;
++	int r;
++
++	r = dsi_pll_calc_pck(is_tft, pck_req, &cinfo);
++	if (r)
++		return r;
++
++	r = dsi_pll_program(&cinfo);
++	if (r)
++		return r;
++
++	dss_select_clk_source(0, 1);
++
++	dispc_set_lcd_divisor(cinfo.lck_div, cinfo.pck_div);
++
++	*fck = cinfo.dsi1_pll_fclk;
++	*lck_div = cinfo.lck_div;
++	*pck_div = cinfo.pck_div;
++
++	return 0;
++}
++#else
++static int dpi_set_dispc_clk(bool is_tft, unsigned long pck_req,
++		unsigned long *fck, int *lck_div, int *pck_div)
++{
++	struct dispc_clock_info cinfo;
++	int r;
++
++	r = dispc_calc_clock_div(is_tft, pck_req, &cinfo);
++	if (r)
++		return r;
++
++	r = dispc_set_clock_div(&cinfo);
++	if (r)
++		return r;
++
++	*fck = cinfo.fck;
++	*lck_div = cinfo.lck_div;
++	*pck_div = cinfo.pck_div;
++
++	return 0;
++}
++#endif
++
++static int dpi_set_mode(struct omap_dss_device *dssdev)
++{
++	struct omap_video_timings *t = &dssdev->panel.timings;
++	int lck_div, pck_div;
++	unsigned long fck;
++	unsigned long pck;
++	bool is_tft;
++	int r = 0;
++
++	dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
++
++	dispc_set_pol_freq(dssdev->panel.config, dssdev->panel.acbi,
++			dssdev->panel.acb);
++
++	is_tft = (dssdev->panel.config & OMAP_DSS_LCD_TFT) != 0;
++
++#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
++	r = dpi_set_dsi_clk(is_tft, t->pixel_clock * 1000,
++			&fck, &lck_div, &pck_div);
++#else
++	r = dpi_set_dispc_clk(is_tft, t->pixel_clock * 1000,
++			&fck, &lck_div, &pck_div);
++#endif
++	if (r)
++		goto err0;
++
++	pck = fck / lck_div / pck_div / 1000;
++
++	if (pck != t->pixel_clock) {
++		DSSWARN("Could not find exact pixel clock. "
++				"Requested %d kHz, got %lu kHz\n",
++				t->pixel_clock, pck);
++
++		t->pixel_clock = pck;
++	}
++
++	dispc_set_lcd_timings(t);
++
++err0:
++	dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
++	return r;
++}
++
++static int dpi_basic_init(struct omap_dss_device *dssdev)
++{
++	bool is_tft;
++
++	is_tft = (dssdev->panel.config & OMAP_DSS_LCD_TFT) != 0;
++
++	dispc_set_parallel_interface_mode(OMAP_DSS_PARALLELMODE_BYPASS);
++	dispc_set_lcd_display_type(is_tft ? OMAP_DSS_LCD_DISPLAY_TFT :
++			OMAP_DSS_LCD_DISPLAY_STN);
++	dispc_set_tft_data_lines(dssdev->phy.dpi.data_lines);
++
++	return 0;
++}
++
++static int dpi_display_enable(struct omap_dss_device *dssdev)
++{
++	int r;
++
++	r = omap_dss_start_device(dssdev);
++	if (r) {
++		DSSERR("failed to start device\n");
++		goto err0;
++	}
++
++	if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
++		DSSERR("display already enabled\n");
++		r = -EINVAL;
++		goto err1;
++	}
++
++	dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
++
++	r = dpi_basic_init(dssdev);
++	if (r)
++		goto err2;
++
++#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
++	dss_clk_enable(DSS_CLK_FCK2);
++	r = dsi_pll_init(0, 1);
++	if (r)
++		goto err3;
++#endif
++	r = dpi_set_mode(dssdev);
++	if (r)
++		goto err4;
++
++	mdelay(2);
++
++	dispc_enable_lcd_out(1);
++
++	r = dssdev->driver->enable(dssdev);
++	if (r)
++		goto err5;
++
++	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
++
++	return 0;
++
++err5:
++	dispc_enable_lcd_out(0);
++err4:
++#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
++	dsi_pll_uninit();
++err3:
++	dss_clk_disable(DSS_CLK_FCK2);
++#endif
++err2:
++	dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
++err1:
++	omap_dss_stop_device(dssdev);
++err0:
++	return r;
++}
++
++static int dpi_display_resume(struct omap_dss_device *dssdev);
++
++static void dpi_display_disable(struct omap_dss_device *dssdev)
++{
++	if (dssdev->state == OMAP_DSS_DISPLAY_DISABLED)
++		return;
++
++	if (dssdev->state == OMAP_DSS_DISPLAY_SUSPENDED)
++		dpi_display_resume(dssdev);
++
++	dssdev->driver->disable(dssdev);
++
++	dispc_enable_lcd_out(0);
++
++#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
++	dss_select_clk_source(0, 0);
++	dsi_pll_uninit();
++	dss_clk_disable(DSS_CLK_FCK2);
++#endif
++
++	dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
++
++	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
++
++	omap_dss_stop_device(dssdev);
++}
++
++static int dpi_display_suspend(struct omap_dss_device *dssdev)
++{
++	if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
++		return -EINVAL;
++
++	DSSDBG("dpi_display_suspend\n");
++
++	if (dssdev->driver->suspend)
++		dssdev->driver->suspend(dssdev);
++
++	dispc_enable_lcd_out(0);
++
++	dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
++
++	dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
++
++	return 0;
++}
++
++static int dpi_display_resume(struct omap_dss_device *dssdev)
++{
++	if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED)
++		return -EINVAL;
++
++	DSSDBG("dpi_display_resume\n");
++
++	dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
++
++	dispc_enable_lcd_out(1);
++
++	if (dssdev->driver->resume)
++		dssdev->driver->resume(dssdev);
++
++	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
++
++	return 0;
++}
++
++static void dpi_set_timings(struct omap_dss_device *dssdev,
++			struct omap_video_timings *timings)
++{
++	DSSDBG("dpi_set_timings\n");
++	dssdev->panel.timings = *timings;
++	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
++		dpi_set_mode(dssdev);
++		dispc_go(OMAP_DSS_CHANNEL_LCD);
++	}
++}
++
++static int dpi_check_timings(struct omap_dss_device *dssdev,
++			struct omap_video_timings *timings)
++{
++	bool is_tft;
++	int r;
++	int lck_div, pck_div;
++	unsigned long fck;
++	unsigned long pck;
++
++	if (!dispc_lcd_timings_ok(timings))
++		return -EINVAL;
++
++	if (timings->pixel_clock == 0)
++		return -EINVAL;
++
++	is_tft = (dssdev->panel.config & OMAP_DSS_LCD_TFT) != 0;
++
++#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
++	{
++		struct dsi_clock_info cinfo;
++		r = dsi_pll_calc_pck(is_tft, timings->pixel_clock * 1000,
++				&cinfo);
++
++		if (r)
++			return r;
++
++		fck = cinfo.dsi1_pll_fclk;
++		lck_div = cinfo.lck_div;
++		pck_div = cinfo.pck_div;
++	}
++#else
++	{
++		struct dispc_clock_info cinfo;
++		r = dispc_calc_clock_div(is_tft, timings->pixel_clock * 1000,
++				&cinfo);
++
++		if (r)
++			return r;
++
++		fck = cinfo.fck;
++		lck_div = cinfo.lck_div;
++		pck_div = cinfo.pck_div;
++	}
++#endif
++
++	pck = fck / lck_div / pck_div / 1000;
++
++	timings->pixel_clock = pck;
++
++	return 0;
++}
++
++static void dpi_get_timings(struct omap_dss_device *dssdev,
++			struct omap_video_timings *timings)
++{
++	*timings = dssdev->panel.timings;
++}
++
++static int dpi_display_set_update_mode(struct omap_dss_device *dssdev,
++		enum omap_dss_update_mode mode)
++{
++	if (mode == OMAP_DSS_UPDATE_MANUAL)
++		return -EINVAL;
++
++	if (mode == OMAP_DSS_UPDATE_DISABLED) {
++		dispc_enable_lcd_out(0);
++		dpi.update_enabled = 0;
++	} else {
++		dispc_enable_lcd_out(1);
++		dpi.update_enabled = 1;
++	}
++
++	return 0;
++}
++
++static enum omap_dss_update_mode dpi_display_get_update_mode(
++		struct omap_dss_device *dssdev)
++{
++	return dpi.update_enabled ? OMAP_DSS_UPDATE_AUTO :
++		OMAP_DSS_UPDATE_DISABLED;
++}
++
++int dpi_init_display(struct omap_dss_device *dssdev)
++{
++	DSSDBG("init_display\n");
++
++	dssdev->enable = dpi_display_enable;
++	dssdev->disable = dpi_display_disable;
++	dssdev->suspend = dpi_display_suspend;
++	dssdev->resume = dpi_display_resume;
++	dssdev->set_timings = dpi_set_timings;
++	dssdev->check_timings = dpi_check_timings;
++	dssdev->get_timings = dpi_get_timings;
++	dssdev->set_update_mode = dpi_display_set_update_mode;
++	dssdev->get_update_mode = dpi_display_get_update_mode;
++
++	return 0;
++}
++
++int dpi_init(void)
++{
++	return 0;
++}
++
++void dpi_exit(void)
++{
++}
++
+-- 
+1.6.2.4
+