diff options
Diffstat (limited to 'drivers/video/fbdev/omap2/dss/hdmi4.c')
| -rw-r--r-- | drivers/video/fbdev/omap2/dss/hdmi4.c | 839 |
1 files changed, 0 insertions, 839 deletions
diff --git a/drivers/video/fbdev/omap2/dss/hdmi4.c b/drivers/video/fbdev/omap2/dss/hdmi4.c deleted file mode 100644 index 7103c659a534..000000000000 --- a/drivers/video/fbdev/omap2/dss/hdmi4.c +++ /dev/null @@ -1,839 +0,0 @@ -/* - * HDMI interface DSS driver for TI's OMAP4 family of SoCs. - * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/ - * Authors: Yong Zhi - * Mythri pk <mythripk@ti.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 "HDMI" - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/interrupt.h> -#include <linux/mutex.h> -#include <linux/delay.h> -#include <linux/string.h> -#include <linux/platform_device.h> -#include <linux/pm_runtime.h> -#include <linux/clk.h> -#include <linux/gpio.h> -#include <linux/regulator/consumer.h> -#include <linux/component.h> -#include <video/omapdss.h> -#include <sound/omap-hdmi-audio.h> - -#include "hdmi4_core.h" -#include "dss.h" -#include "dss_features.h" -#include "hdmi.h" - -static struct omap_hdmi hdmi; - -static int hdmi_runtime_get(void) -{ - int r; - - DSSDBG("hdmi_runtime_get\n"); - - r = pm_runtime_get_sync(&hdmi.pdev->dev); - WARN_ON(r < 0); - if (r < 0) - return r; - - return 0; -} - -static void hdmi_runtime_put(void) -{ - int r; - - DSSDBG("hdmi_runtime_put\n"); - - r = pm_runtime_put_sync(&hdmi.pdev->dev); - WARN_ON(r < 0 && r != -ENOSYS); -} - -static irqreturn_t hdmi_irq_handler(int irq, void *data) -{ - struct hdmi_wp_data *wp = data; - u32 irqstatus; - - irqstatus = hdmi_wp_get_irqstatus(wp); - hdmi_wp_set_irqstatus(wp, irqstatus); - - if ((irqstatus & HDMI_IRQ_LINK_CONNECT) && - irqstatus & HDMI_IRQ_LINK_DISCONNECT) { - /* - * If we get both connect and disconnect interrupts at the same - * time, turn off the PHY, clear interrupts, and restart, which - * raises connect interrupt if a cable is connected, or nothing - * if cable is not connected. - */ - hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF); - - hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT | - HDMI_IRQ_LINK_DISCONNECT); - - hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); - } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) { - hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON); - } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) { - hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); - } - - return IRQ_HANDLED; -} - -static int hdmi_init_regulator(void) -{ - int r; - struct regulator *reg; - - if (hdmi.vdda_reg != NULL) - return 0; - - reg = devm_regulator_get(&hdmi.pdev->dev, "vdda"); - - if (IS_ERR(reg)) { - if (PTR_ERR(reg) != -EPROBE_DEFER) - DSSERR("can't get VDDA regulator\n"); - return PTR_ERR(reg); - } - - if (regulator_can_change_voltage(reg)) { - r = regulator_set_voltage(reg, 1800000, 1800000); - if (r) { - devm_regulator_put(reg); - DSSWARN("can't set the regulator voltage\n"); - return r; - } - } - - hdmi.vdda_reg = reg; - - return 0; -} - -static int hdmi_power_on_core(struct omap_dss_device *dssdev) -{ - int r; - - r = regulator_enable(hdmi.vdda_reg); - if (r) - return r; - - r = hdmi_runtime_get(); - if (r) - goto err_runtime_get; - - /* Make selection of HDMI in DSS */ - dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK); - - hdmi.core_enabled = true; - - return 0; - -err_runtime_get: - regulator_disable(hdmi.vdda_reg); - - return r; -} - -static void hdmi_power_off_core(struct omap_dss_device *dssdev) -{ - hdmi.core_enabled = false; - - hdmi_runtime_put(); - regulator_disable(hdmi.vdda_reg); -} - -static int hdmi_power_on_full(struct omap_dss_device *dssdev) -{ - int r; - struct omap_video_timings *p; - struct omap_overlay_manager *mgr = hdmi.output.manager; - struct hdmi_wp_data *wp = &hdmi.wp; - struct dss_pll_clock_info hdmi_cinfo = { 0 }; - - r = hdmi_power_on_core(dssdev); - if (r) - return r; - - /* disable and clear irqs */ - hdmi_wp_clear_irqenable(wp, 0xffffffff); - hdmi_wp_set_irqstatus(wp, 0xffffffff); - - p = &hdmi.cfg.timings; - - DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res); - - hdmi_pll_compute(&hdmi.pll, p->pixelclock, &hdmi_cinfo); - - r = dss_pll_enable(&hdmi.pll.pll); - if (r) { - DSSERR("Failed to enable PLL\n"); - goto err_pll_enable; - } - - r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo); - if (r) { - DSSERR("Failed to configure PLL\n"); - goto err_pll_cfg; - } - - r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco, - hdmi_cinfo.clkout[0]); - if (r) { - DSSDBG("Failed to configure PHY\n"); - goto err_phy_cfg; - } - - r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); - if (r) - goto err_phy_pwr; - - hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg); - - /* bypass TV gamma table */ - dispc_enable_gamma_table(0); - - /* tv size */ - dss_mgr_set_timings(mgr, p); - - r = hdmi_wp_video_start(&hdmi.wp); - if (r) - goto err_vid_enable; - - r = dss_mgr_enable(mgr); - if (r) - goto err_mgr_enable; - - hdmi_wp_set_irqenable(wp, - HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT); - - return 0; - -err_mgr_enable: - hdmi_wp_video_stop(&hdmi.wp); -err_vid_enable: - hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF); -err_phy_pwr: -err_phy_cfg: -err_pll_cfg: - dss_pll_disable(&hdmi.pll.pll); -err_pll_enable: - hdmi_power_off_core(dssdev); - return -EIO; -} - -static void hdmi_power_off_full(struct omap_dss_device *dssdev) -{ - struct omap_overlay_manager *mgr = hdmi.output.manager; - - hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff); - - dss_mgr_disable(mgr); - - hdmi_wp_video_stop(&hdmi.wp); - - hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF); - - dss_pll_disable(&hdmi.pll.pll); - - hdmi_power_off_core(dssdev); -} - -static int hdmi_display_check_timing(struct omap_dss_device *dssdev, - struct omap_video_timings *timings) -{ - struct omap_dss_device *out = &hdmi.output; - - if (!dispc_mgr_timings_ok(out->dispc_channel, timings)) - return -EINVAL; - - return 0; -} - -static void hdmi_display_set_timing(struct omap_dss_device *dssdev, - struct omap_video_timings *timings) -{ - mutex_lock(&hdmi.lock); - - hdmi.cfg.timings = *timings; - - dispc_set_tv_pclk(timings->pixelclock); - - mutex_unlock(&hdmi.lock); -} - -static void hdmi_display_get_timings(struct omap_dss_device *dssdev, - struct omap_video_timings *timings) -{ - *timings = hdmi.cfg.timings; -} - -static void hdmi_dump_regs(struct seq_file *s) -{ - mutex_lock(&hdmi.lock); - - if (hdmi_runtime_get()) { - mutex_unlock(&hdmi.lock); - return; - } - - hdmi_wp_dump(&hdmi.wp, s); - hdmi_pll_dump(&hdmi.pll, s); - hdmi_phy_dump(&hdmi.phy, s); - hdmi4_core_dump(&hdmi.core, s); - - hdmi_runtime_put(); - mutex_unlock(&hdmi.lock); -} - -static int read_edid(u8 *buf, int len) -{ - int r; - - mutex_lock(&hdmi.lock); - - r = hdmi_runtime_get(); - BUG_ON(r); - - r = hdmi4_read_edid(&hdmi.core, buf, len); - - hdmi_runtime_put(); - mutex_unlock(&hdmi.lock); - - return r; -} - -static void hdmi_start_audio_stream(struct omap_hdmi *hd) -{ - hdmi_wp_audio_enable(&hd->wp, true); - hdmi4_audio_start(&hd->core, &hd->wp); -} - -static void hdmi_stop_audio_stream(struct omap_hdmi *hd) -{ - hdmi4_audio_stop(&hd->core, &hd->wp); - hdmi_wp_audio_enable(&hd->wp, false); -} - -static int hdmi_display_enable(struct omap_dss_device *dssdev) -{ - struct omap_dss_device *out = &hdmi.output; - unsigned long flags; - int r = 0; - - DSSDBG("ENTER hdmi_display_enable\n"); - - mutex_lock(&hdmi.lock); - - if (out->manager == NULL) { - DSSERR("failed to enable display: no output/manager\n"); - r = -ENODEV; - goto err0; - } - - r = hdmi_power_on_full(dssdev); - if (r) { - DSSERR("failed to power on device\n"); - goto err0; - } - - if (hdmi.audio_configured) { - r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config, - hdmi.cfg.timings.pixelclock); - if (r) { - DSSERR("Error restoring audio configuration: %d", r); - hdmi.audio_abort_cb(&hdmi.pdev->dev); - hdmi.audio_configured = false; - } - } - - spin_lock_irqsave(&hdmi.audio_playing_lock, flags); - if (hdmi.audio_configured && hdmi.audio_playing) - hdmi_start_audio_stream(&hdmi); - hdmi.display_enabled = true; - spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags); - - mutex_unlock(&hdmi.lock); - return 0; - -err0: - mutex_unlock(&hdmi.lock); - return r; -} - -static void hdmi_display_disable(struct omap_dss_device *dssdev) -{ - unsigned long flags; - - DSSDBG("Enter hdmi_display_disable\n"); - - mutex_lock(&hdmi.lock); - - spin_lock_irqsave(&hdmi.audio_playing_lock, flags); - hdmi_stop_audio_stream(&hdmi); - hdmi.display_enabled = false; - spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags); - - hdmi_power_off_full(dssdev); - - mutex_unlock(&hdmi.lock); -} - -static int hdmi_core_enable(struct omap_dss_device *dssdev) -{ - int r = 0; - - DSSDBG("ENTER omapdss_hdmi_core_enable\n"); - - mutex_lock(&hdmi.lock); - - r = hdmi_power_on_core(dssdev); - if (r) { - DSSERR("failed to power on device\n"); - goto err0; - } - - mutex_unlock(&hdmi.lock); - return 0; - -err0: - mutex_unlock(&hdmi.lock); - return r; -} - -static void hdmi_core_disable(struct omap_dss_device *dssdev) -{ - DSSDBG("Enter omapdss_hdmi_core_disable\n"); - - mutex_lock(&hdmi.lock); - - hdmi_power_off_core(dssdev); - - mutex_unlock(&hdmi.lock); -} - -static int hdmi_connect(struct omap_dss_device *dssdev, - struct omap_dss_device *dst) -{ - struct omap_overlay_manager *mgr; - int r; - - r = hdmi_init_regulator(); - if (r) - return r; - - mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel); - if (!mgr) - return -ENODEV; - - r = dss_mgr_connect(mgr, dssdev); - if (r) - return r; - - r = omapdss_output_set_device(dssdev, dst); - if (r) { - DSSERR("failed to connect output to new device: %s\n", - dst->name); - dss_mgr_disconnect(mgr, dssdev); - return r; - } - - return 0; -} - -static void hdmi_disconnect(struct omap_dss_device *dssdev, - struct omap_dss_device *dst) -{ - WARN_ON(dst != dssdev->dst); - - if (dst != dssdev->dst) - return; - - omapdss_output_unset_device(dssdev); - - if (dssdev->manager) - dss_mgr_disconnect(dssdev->manager, dssdev); -} - -static int hdmi_read_edid(struct omap_dss_device *dssdev, - u8 *edid, int len) -{ - bool need_enable; - int r; - - need_enable = hdmi.core_enabled == false; - - if (need_enable) { - r = hdmi_core_enable(dssdev); - if (r) - return r; - } - - r = read_edid(edid, len); - - if (need_enable) - hdmi_core_disable(dssdev); - - return r; -} - -static int hdmi_set_infoframe(struct omap_dss_device *dssdev, - const struct hdmi_avi_infoframe *avi) -{ - hdmi.cfg.infoframe = *avi; - return 0; -} - -static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev, - bool hdmi_mode) -{ - hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI; - return 0; -} - -static const struct omapdss_hdmi_ops hdmi_ops = { - .connect = hdmi_connect, - .disconnect = hdmi_disconnect, - - .enable = hdmi_display_enable, - .disable = hdmi_display_disable, - - .check_timings = hdmi_display_check_timing, - .set_timings = hdmi_display_set_timing, - .get_timings = hdmi_display_get_timings, - - .read_edid = hdmi_read_edid, - .set_infoframe = hdmi_set_infoframe, - .set_hdmi_mode = hdmi_set_hdmi_mode, -}; - -static void hdmi_init_output(struct platform_device *pdev) -{ - struct omap_dss_device *out = &hdmi.output; - - out->dev = &pdev->dev; - out->id = OMAP_DSS_OUTPUT_HDMI; - out->output_type = OMAP_DISPLAY_TYPE_HDMI; - out->name = "hdmi.0"; - out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; - out->ops.hdmi = &hdmi_ops; - out->owner = THIS_MODULE; - - omapdss_register_output(out); -} - -static void hdmi_uninit_output(struct platform_device *pdev) -{ - struct omap_dss_device *out = &hdmi.output; - - omapdss_unregister_output(out); -} - -static int hdmi_probe_of(struct platform_device *pdev) -{ - struct device_node *node = pdev->dev.of_node; - struct device_node *ep; - int r; - - ep = omapdss_of_get_first_endpoint(node); - if (!ep) - return 0; - - r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy); - if (r) - goto err; - - of_node_put(ep); - return 0; - -err: - of_node_put(ep); - return r; -} - -/* Audio callbacks */ -static int hdmi_audio_startup(struct device *dev, - void (*abort_cb)(struct device *dev)) -{ - struct omap_hdmi *hd = dev_get_drvdata(dev); - int ret = 0; - - mutex_lock(&hd->lock); - - if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) { - ret = -EPERM; - goto out; - } - - hd->audio_abort_cb = abort_cb; - -out: - mutex_unlock(&hd->lock); - - return ret; -} - -static int hdmi_audio_shutdown(struct device *dev) -{ - struct omap_hdmi *hd = dev_get_drvdata(dev); - - mutex_lock(&hd->lock); - hd->audio_abort_cb = NULL; - hd->audio_configured = false; - hd->audio_playing = false; - mutex_unlock(&hd->lock); - - return 0; -} - -static int hdmi_audio_start(struct device *dev) -{ - struct omap_hdmi *hd = dev_get_drvdata(dev); - unsigned long flags; - - WARN_ON(!hdmi_mode_has_audio(&hd->cfg)); - - spin_lock_irqsave(&hd->audio_playing_lock, flags); - - if (hd->display_enabled) - hdmi_start_audio_stream(hd); - hd->audio_playing = true; - - spin_unlock_irqrestore(&hd->audio_playing_lock, flags); - return 0; -} - -static void hdmi_audio_stop(struct device *dev) -{ - struct omap_hdmi *hd = dev_get_drvdata(dev); - unsigned long flags; - - WARN_ON(!hdmi_mode_has_audio(&hd->cfg)); - - spin_lock_irqsave(&hd->audio_playing_lock, flags); - - if (hd->display_enabled) - hdmi_stop_audio_stream(hd); - hd->audio_playing = false; - - spin_unlock_irqrestore(&hd->audio_playing_lock, flags); -} - -static int hdmi_audio_config(struct device *dev, - struct omap_dss_audio *dss_audio) -{ - struct omap_hdmi *hd = dev_get_drvdata(dev); - int ret; - - mutex_lock(&hd->lock); - - if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) { - ret = -EPERM; - goto out; - } - - ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio, - hd->cfg.timings.pixelclock); - if (!ret) { - hd->audio_configured = true; - hd->audio_config = *dss_audio; - } -out: - mutex_unlock(&hd->lock); - - return ret; -} - -static const struct omap_hdmi_audio_ops hdmi_audio_ops = { - .audio_startup = hdmi_audio_startup, - .audio_shutdown = hdmi_audio_shutdown, - .audio_start = hdmi_audio_start, - .audio_stop = hdmi_audio_stop, - .audio_config = hdmi_audio_config, -}; - -static int hdmi_audio_register(struct device *dev) -{ - struct omap_hdmi_audio_pdata pdata = { - .dev = dev, - .dss_version = omapdss_get_version(), - .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp), - .ops = &hdmi_audio_ops, - }; - - hdmi.audio_pdev = platform_device_register_data( - dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO, - &pdata, sizeof(pdata)); - - if (IS_ERR(hdmi.audio_pdev)) - return PTR_ERR(hdmi.audio_pdev); - - return 0; -} - -/* HDMI HW IP initialisation */ -static int hdmi4_bind(struct device *dev, struct device *master, void *data) -{ - struct platform_device *pdev = to_platform_device(dev); - int r; - int irq; - - hdmi.pdev = pdev; - dev_set_drvdata(&pdev->dev, &hdmi); - - mutex_init(&hdmi.lock); - spin_lock_init(&hdmi.audio_playing_lock); - - if (pdev->dev.of_node) { - r = hdmi_probe_of(pdev); - if (r) - return r; - } - - r = hdmi_wp_init(pdev, &hdmi.wp); - if (r) - return r; - - r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp); - if (r) - return r; - - r = hdmi_phy_init(pdev, &hdmi.phy); - if (r) - goto err; - - r = hdmi4_core_init(pdev, &hdmi.core); - if (r) - goto err; - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - DSSERR("platform_get_irq failed\n"); - r = -ENODEV; - goto err; - } - - r = devm_request_threaded_irq(&pdev->dev, irq, - NULL, hdmi_irq_handler, - IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp); - if (r) { - DSSERR("HDMI IRQ request failed\n"); - goto err; - } - - pm_runtime_enable(&pdev->dev); - - hdmi_init_output(pdev); - - r = hdmi_audio_register(&pdev->dev); - if (r) { - DSSERR("Registering HDMI audio failed\n"); - hdmi_uninit_output(pdev); - pm_runtime_disable(&pdev->dev); - return r; - } - - dss_debugfs_create_file("hdmi", hdmi_dump_regs); - - return 0; -err: - hdmi_pll_uninit(&hdmi.pll); - return r; -} - -static void hdmi4_unbind(struct device *dev, struct device *master, void *data) -{ - struct platform_device *pdev = to_platform_device(dev); - - if (hdmi.audio_pdev) - platform_device_unregister(hdmi.audio_pdev); - - hdmi_uninit_output(pdev); - - hdmi_pll_uninit(&hdmi.pll); - - pm_runtime_disable(&pdev->dev); -} - -static const struct component_ops hdmi4_component_ops = { - .bind = hdmi4_bind, - .unbind = hdmi4_unbind, -}; - -static int hdmi4_probe(struct platform_device *pdev) -{ - return component_add(&pdev->dev, &hdmi4_component_ops); -} - -static int hdmi4_remove(struct platform_device *pdev) -{ - component_del(&pdev->dev, &hdmi4_component_ops); - return 0; -} - -static int hdmi_runtime_suspend(struct device *dev) -{ - dispc_runtime_put(); - - return 0; -} - -static int hdmi_runtime_resume(struct device *dev) -{ - int r; - - r = dispc_runtime_get(); - if (r < 0) - return r; - - return 0; -} - -static const struct dev_pm_ops hdmi_pm_ops = { - .runtime_suspend = hdmi_runtime_suspend, - .runtime_resume = hdmi_runtime_resume, -}; - -static const struct of_device_id hdmi_of_match[] = { - { .compatible = "ti,omap4-hdmi", }, - {}, -}; - -static struct platform_driver omapdss_hdmihw_driver = { - .probe = hdmi4_probe, - .remove = hdmi4_remove, - .driver = { - .name = "omapdss_hdmi", - .pm = &hdmi_pm_ops, - .of_match_table = hdmi_of_match, - .suppress_bind_attrs = true, - }, -}; - -int __init hdmi4_init_platform_driver(void) -{ - return platform_driver_register(&omapdss_hdmihw_driver); -} - -void hdmi4_uninit_platform_driver(void) -{ - platform_driver_unregister(&omapdss_hdmihw_driver); -} |