diff options
Diffstat (limited to 'drivers/video/omap2/dss/dpi.c')
| -rw-r--r-- | drivers/video/omap2/dss/dpi.c | 389 |
1 files changed, 0 insertions, 389 deletions
diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c deleted file mode 100644 index faaf305fda2..00000000000 --- a/drivers/video/omap2/dss/dpi.c +++ /dev/null @@ -1,389 +0,0 @@ -/* - * 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/delay.h> -#include <linux/export.h> -#include <linux/err.h> -#include <linux/errno.h> -#include <linux/platform_device.h> -#include <linux/regulator/consumer.h> - -#include <video/omapdss.h> -#include <plat/cpu.h> - -#include "dss.h" - -static struct { - struct regulator *vdds_dsi_reg; - struct platform_device *dsidev; -} dpi; - -static struct platform_device *dpi_get_dsidev(enum omap_dss_clk_source clk) -{ - int dsi_module; - - dsi_module = clk == OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC ? 0 : 1; - - return dsi_get_dsidev_from_id(dsi_module); -} - -static bool dpi_use_dsi_pll(struct omap_dss_device *dssdev) -{ - if (dssdev->clocks.dispc.dispc_fclk_src == - OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC || - dssdev->clocks.dispc.dispc_fclk_src == - OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC || - dssdev->clocks.dispc.channel.lcd_clk_src == - OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC || - dssdev->clocks.dispc.channel.lcd_clk_src == - OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC) - return true; - else - return false; -} - -static int dpi_set_dsi_clk(struct omap_dss_device *dssdev, bool is_tft, - unsigned long pck_req, unsigned long *fck, int *lck_div, - int *pck_div) -{ - struct dsi_clock_info dsi_cinfo; - struct dispc_clock_info dispc_cinfo; - int r; - - r = dsi_pll_calc_clock_div_pck(dpi.dsidev, is_tft, pck_req, - &dsi_cinfo, &dispc_cinfo); - if (r) - return r; - - r = dsi_pll_set_clock_div(dpi.dsidev, &dsi_cinfo); - if (r) - return r; - - dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src); - - r = dispc_mgr_set_clock_div(dssdev->manager->id, &dispc_cinfo); - if (r) { - dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK); - return r; - } - - *fck = dsi_cinfo.dsi_pll_hsdiv_dispc_clk; - *lck_div = dispc_cinfo.lck_div; - *pck_div = dispc_cinfo.pck_div; - - return 0; -} - -static int dpi_set_dispc_clk(struct omap_dss_device *dssdev, bool is_tft, - unsigned long pck_req, unsigned long *fck, int *lck_div, - int *pck_div) -{ - struct dss_clock_info dss_cinfo; - struct dispc_clock_info dispc_cinfo; - int r; - - r = dss_calc_clock_div(is_tft, pck_req, &dss_cinfo, &dispc_cinfo); - if (r) - return r; - - r = dss_set_clock_div(&dss_cinfo); - if (r) - return r; - - r = dispc_mgr_set_clock_div(dssdev->manager->id, &dispc_cinfo); - if (r) - return r; - - *fck = dss_cinfo.fck; - *lck_div = dispc_cinfo.lck_div; - *pck_div = dispc_cinfo.pck_div; - - return 0; -} - -static int dpi_set_mode(struct omap_dss_device *dssdev) -{ - struct omap_video_timings *t = &dssdev->panel.timings; - int lck_div = 0, pck_div = 0; - unsigned long fck = 0; - unsigned long pck; - bool is_tft; - int r = 0; - - dispc_mgr_set_pol_freq(dssdev->manager->id, dssdev->panel.config, - dssdev->panel.acbi, dssdev->panel.acb); - - is_tft = (dssdev->panel.config & OMAP_DSS_LCD_TFT) != 0; - - if (dpi_use_dsi_pll(dssdev)) - r = dpi_set_dsi_clk(dssdev, is_tft, t->pixel_clock * 1000, - &fck, &lck_div, &pck_div); - else - r = dpi_set_dispc_clk(dssdev, is_tft, t->pixel_clock * 1000, - &fck, &lck_div, &pck_div); - if (r) - return r; - - 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_mgr_set_lcd_timings(dssdev->manager->id, t); - - return 0; -} - -static void dpi_basic_init(struct omap_dss_device *dssdev) -{ - bool is_tft; - - is_tft = (dssdev->panel.config & OMAP_DSS_LCD_TFT) != 0; - - dispc_mgr_set_io_pad_mode(DSS_IO_PAD_MODE_BYPASS); - dispc_mgr_enable_stallmode(dssdev->manager->id, false); - - dispc_mgr_set_lcd_display_type(dssdev->manager->id, is_tft ? - OMAP_DSS_LCD_DISPLAY_TFT : OMAP_DSS_LCD_DISPLAY_STN); - dispc_mgr_set_tft_data_lines(dssdev->manager->id, - dssdev->phy.dpi.data_lines); -} - -int omapdss_dpi_display_enable(struct omap_dss_device *dssdev) -{ - int r; - - if (cpu_is_omap34xx() && !dpi.vdds_dsi_reg) { - DSSERR("no VDSS_DSI regulator\n"); - return -ENODEV; - } - - if (dssdev->manager == NULL) { - DSSERR("failed to enable display: no manager\n"); - return -ENODEV; - } - - r = omap_dss_start_device(dssdev); - if (r) { - DSSERR("failed to start device\n"); - goto err_start_dev; - } - - if (cpu_is_omap34xx()) { - r = regulator_enable(dpi.vdds_dsi_reg); - if (r) - goto err_reg_enable; - } - - r = dss_runtime_get(); - if (r) - goto err_get_dss; - - r = dispc_runtime_get(); - if (r) - goto err_get_dispc; - - dpi_basic_init(dssdev); - - if (dpi_use_dsi_pll(dssdev)) { - r = dsi_runtime_get(dpi.dsidev); - if (r) - goto err_get_dsi; - - r = dsi_pll_init(dpi.dsidev, 0, 1); - if (r) - goto err_dsi_pll_init; - } - - r = dpi_set_mode(dssdev); - if (r) - goto err_set_mode; - - mdelay(2); - - r = dss_mgr_enable(dssdev->manager); - if (r) - goto err_mgr_enable; - - return 0; - -err_mgr_enable: -err_set_mode: - if (dpi_use_dsi_pll(dssdev)) - dsi_pll_uninit(dpi.dsidev, true); -err_dsi_pll_init: - if (dpi_use_dsi_pll(dssdev)) - dsi_runtime_put(dpi.dsidev); -err_get_dsi: - dispc_runtime_put(); -err_get_dispc: - dss_runtime_put(); -err_get_dss: - if (cpu_is_omap34xx()) - regulator_disable(dpi.vdds_dsi_reg); -err_reg_enable: - omap_dss_stop_device(dssdev); -err_start_dev: - return r; -} -EXPORT_SYMBOL(omapdss_dpi_display_enable); - -void omapdss_dpi_display_disable(struct omap_dss_device *dssdev) -{ - dss_mgr_disable(dssdev->manager); - - if (dpi_use_dsi_pll(dssdev)) { - dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK); - dsi_pll_uninit(dpi.dsidev, true); - dsi_runtime_put(dpi.dsidev); - } - - dispc_runtime_put(); - dss_runtime_put(); - - if (cpu_is_omap34xx()) - regulator_disable(dpi.vdds_dsi_reg); - - omap_dss_stop_device(dssdev); -} -EXPORT_SYMBOL(omapdss_dpi_display_disable); - -void dpi_set_timings(struct omap_dss_device *dssdev, - struct omap_video_timings *timings) -{ - int r; - - DSSDBG("dpi_set_timings\n"); - dssdev->panel.timings = *timings; - if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) { - r = dss_runtime_get(); - if (r) - return; - - r = dispc_runtime_get(); - if (r) { - dss_runtime_put(); - return; - } - - dpi_set_mode(dssdev); - dispc_mgr_go(dssdev->manager->id); - - dispc_runtime_put(); - dss_runtime_put(); - } -} -EXPORT_SYMBOL(dpi_set_timings); - -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; - struct dispc_clock_info dispc_cinfo; - - 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; - - if (dpi_use_dsi_pll(dssdev)) { - struct dsi_clock_info dsi_cinfo; - r = dsi_pll_calc_clock_div_pck(dpi.dsidev, is_tft, - timings->pixel_clock * 1000, - &dsi_cinfo, &dispc_cinfo); - - if (r) - return r; - - fck = dsi_cinfo.dsi_pll_hsdiv_dispc_clk; - } else { - struct dss_clock_info dss_cinfo; - r = dss_calc_clock_div(is_tft, timings->pixel_clock * 1000, - &dss_cinfo, &dispc_cinfo); - - if (r) - return r; - - fck = dss_cinfo.fck; - } - - lck_div = dispc_cinfo.lck_div; - pck_div = dispc_cinfo.pck_div; - - pck = fck / lck_div / pck_div / 1000; - - timings->pixel_clock = pck; - - return 0; -} -EXPORT_SYMBOL(dpi_check_timings); - -int dpi_init_display(struct omap_dss_device *dssdev) -{ - DSSDBG("init_display\n"); - - if (cpu_is_omap34xx() && dpi.vdds_dsi_reg == NULL) { - struct regulator *vdds_dsi; - - vdds_dsi = dss_get_vdds_dsi(); - - if (IS_ERR(vdds_dsi)) { - DSSERR("can't get VDDS_DSI regulator\n"); - return PTR_ERR(vdds_dsi); - } - - dpi.vdds_dsi_reg = vdds_dsi; - } - - if (dpi_use_dsi_pll(dssdev)) { - enum omap_dss_clk_source dispc_fclk_src = - dssdev->clocks.dispc.dispc_fclk_src; - dpi.dsidev = dpi_get_dsidev(dispc_fclk_src); - } - - return 0; -} - -int dpi_init(void) -{ - return 0; -} - -void dpi_exit(void) -{ -} - |