diff options
Diffstat (limited to 'drivers/video/omap2/dss/sdi.c')
| -rw-r--r-- | drivers/video/omap2/dss/sdi.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c deleted file mode 100644 index f43bfe17b3b..00000000000 --- a/drivers/video/omap2/dss/sdi.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * linux/drivers/video/omap2/dss/sdi.c - * - * Copyright (C) 2009 Nokia Corporation - * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> - * - * 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 "SDI" - -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/regulator/consumer.h> -#include <linux/export.h> -#include <linux/platform_device.h> - -#include <video/omapdss.h> -#include "dss.h" - -static struct { - bool update_enabled; - struct regulator *vdds_sdi_reg; - - struct dss_lcd_mgr_config mgr_config; -} sdi; - -static void sdi_config_lcd_manager(struct omap_dss_device *dssdev) -{ - sdi.mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS; - - sdi.mgr_config.stallmode = false; - sdi.mgr_config.fifohandcheck = false; - - sdi.mgr_config.video_port_width = 24; - sdi.mgr_config.lcden_sig_polarity = 1; - - dss_mgr_set_lcd_config(dssdev->manager, &sdi.mgr_config); -} - -int omapdss_sdi_display_enable(struct omap_dss_device *dssdev) -{ - struct omap_video_timings *t = &dssdev->panel.timings; - struct dss_clock_info dss_cinfo; - struct dispc_clock_info dispc_cinfo; - unsigned long pck; - int r; - - 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; - } - - r = regulator_enable(sdi.vdds_sdi_reg); - if (r) - goto err_reg_enable; - - r = dispc_runtime_get(); - if (r) - goto err_get_dispc; - - /* 15.5.9.1.2 */ - dssdev->panel.timings.data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE; - dssdev->panel.timings.sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE; - - r = dss_calc_clock_div(t->pixel_clock * 1000, &dss_cinfo, &dispc_cinfo); - if (r) - goto err_calc_clock_div; - - sdi.mgr_config.clock_info = dispc_cinfo; - - pck = dss_cinfo.fck / dispc_cinfo.lck_div / dispc_cinfo.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; - } - - - dss_mgr_set_timings(dssdev->manager, t); - - r = dss_set_clock_div(&dss_cinfo); - if (r) - goto err_set_dss_clock_div; - - sdi_config_lcd_manager(dssdev); - - /* - * LCLK and PCLK divisors are located in shadow registers, and we - * normally write them to DISPC registers when enabling the output. - * However, SDI uses pck-free as source clock for its PLL, and pck-free - * is affected by the divisors. And as we need the PLL before enabling - * the output, we need to write the divisors early. - * - * It seems just writing to the DISPC register is enough, and we don't - * need to care about the shadow register mechanism for pck-free. The - * exact reason for this is unknown. - */ - dispc_mgr_set_clock_div(dssdev->manager->id, - &sdi.mgr_config.clock_info); - - dss_sdi_init(dssdev->phy.sdi.datapairs); - r = dss_sdi_enable(); - if (r) - goto err_sdi_enable; - mdelay(2); - - r = dss_mgr_enable(dssdev->manager); - if (r) - goto err_mgr_enable; - - return 0; - -err_mgr_enable: - dss_sdi_disable(); -err_sdi_enable: -err_set_dss_clock_div: -err_calc_clock_div: - dispc_runtime_put(); -err_get_dispc: - regulator_disable(sdi.vdds_sdi_reg); -err_reg_enable: - omap_dss_stop_device(dssdev); -err_start_dev: - return r; -} -EXPORT_SYMBOL(omapdss_sdi_display_enable); - -void omapdss_sdi_display_disable(struct omap_dss_device *dssdev) -{ - dss_mgr_disable(dssdev->manager); - - dss_sdi_disable(); - - dispc_runtime_put(); - - regulator_disable(sdi.vdds_sdi_reg); - - omap_dss_stop_device(dssdev); -} -EXPORT_SYMBOL(omapdss_sdi_display_disable); - -static int __init sdi_init_display(struct omap_dss_device *dssdev) -{ - DSSDBG("SDI init\n"); - - if (sdi.vdds_sdi_reg == NULL) { - struct regulator *vdds_sdi; - - vdds_sdi = dss_get_vdds_sdi(); - - if (IS_ERR(vdds_sdi)) { - DSSERR("can't get VDDS_SDI regulator\n"); - return PTR_ERR(vdds_sdi); - } - - sdi.vdds_sdi_reg = vdds_sdi; - } - - return 0; -} - -static void __init sdi_probe_pdata(struct platform_device *pdev) -{ - struct omap_dss_board_info *pdata = pdev->dev.platform_data; - int i, r; - - for (i = 0; i < pdata->num_devices; ++i) { - struct omap_dss_device *dssdev = pdata->devices[i]; - - if (dssdev->type != OMAP_DISPLAY_TYPE_SDI) - continue; - - r = sdi_init_display(dssdev); - if (r) { - DSSERR("device %s init failed: %d\n", dssdev->name, r); - continue; - } - - r = omap_dss_register_device(dssdev, &pdev->dev, i); - if (r) - DSSERR("device %s register failed: %d\n", - dssdev->name, r); - } -} - -static int __init omap_sdi_probe(struct platform_device *pdev) -{ - sdi_probe_pdata(pdev); - - return 0; -} - -static int __exit omap_sdi_remove(struct platform_device *pdev) -{ - omap_dss_unregister_child_devices(&pdev->dev); - - return 0; -} - -static struct platform_driver omap_sdi_driver = { - .remove = __exit_p(omap_sdi_remove), - .driver = { - .name = "omapdss_sdi", - .owner = THIS_MODULE, - }, -}; - -int __init sdi_init_platform_driver(void) -{ - return platform_driver_probe(&omap_sdi_driver, omap_sdi_probe); -} - -void __exit sdi_uninit_platform_driver(void) -{ - platform_driver_unregister(&omap_sdi_driver); -} |