diff options
author | 2015-08-04 12:17:53 -0700 | |
---|---|---|
committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/msm/hdmi/hdmi.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/msm/hdmi/hdmi.c')
-rw-r--r-- | kernel/drivers/gpu/drm/msm/hdmi/hdmi.c | 489 |
1 files changed, 489 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/msm/hdmi/hdmi.c b/kernel/drivers/gpu/drm/msm/hdmi/hdmi.c new file mode 100644 index 000000000..814536202 --- /dev/null +++ b/kernel/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -0,0 +1,489 @@ +/* + * Copyright (c) 2014 The Linux Foundation. All rights reserved. + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.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/>. + */ + +#include <linux/of_irq.h> +#include "hdmi.h" + +void hdmi_set_mode(struct hdmi *hdmi, bool power_on) +{ + uint32_t ctrl = 0; + + if (power_on) { + ctrl |= HDMI_CTRL_ENABLE; + if (!hdmi->hdmi_mode) { + ctrl |= HDMI_CTRL_HDMI; + hdmi_write(hdmi, REG_HDMI_CTRL, ctrl); + ctrl &= ~HDMI_CTRL_HDMI; + } else { + ctrl |= HDMI_CTRL_HDMI; + } + } else { + ctrl = HDMI_CTRL_HDMI; + } + + hdmi_write(hdmi, REG_HDMI_CTRL, ctrl); + DBG("HDMI Core: %s, HDMI_CTRL=0x%08x", + power_on ? "Enable" : "Disable", ctrl); +} + +static irqreturn_t hdmi_irq(int irq, void *dev_id) +{ + struct hdmi *hdmi = dev_id; + + /* Process HPD: */ + hdmi_connector_irq(hdmi->connector); + + /* Process DDC: */ + hdmi_i2c_irq(hdmi->i2c); + + /* TODO audio.. */ + + return IRQ_HANDLED; +} + +static void hdmi_destroy(struct hdmi *hdmi) +{ + struct hdmi_phy *phy = hdmi->phy; + + if (phy) + phy->funcs->destroy(phy); + + if (hdmi->i2c) + hdmi_i2c_destroy(hdmi->i2c); + + platform_set_drvdata(hdmi->pdev, NULL); +} + +/* construct hdmi at bind/probe time, grab all the resources. If + * we are to EPROBE_DEFER we want to do it here, rather than later + * at modeset_init() time + */ +static struct hdmi *hdmi_init(struct platform_device *pdev) +{ + struct hdmi_platform_config *config = pdev->dev.platform_data; + struct hdmi *hdmi = NULL; + int i, ret; + + hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL); + if (!hdmi) { + ret = -ENOMEM; + goto fail; + } + + hdmi->pdev = pdev; + hdmi->config = config; + + /* not sure about which phy maps to which msm.. probably I miss some */ + if (config->phy_init) + hdmi->phy = config->phy_init(hdmi); + else + hdmi->phy = ERR_PTR(-ENXIO); + + if (IS_ERR(hdmi->phy)) { + ret = PTR_ERR(hdmi->phy); + dev_err(&pdev->dev, "failed to load phy: %d\n", ret); + hdmi->phy = NULL; + goto fail; + } + + hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI"); + if (IS_ERR(hdmi->mmio)) { + ret = PTR_ERR(hdmi->mmio); + goto fail; + } + + hdmi->hpd_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_regs[0]) * + config->hpd_reg_cnt, GFP_KERNEL); + if (!hdmi->hpd_regs) { + ret = -ENOMEM; + goto fail; + } + for (i = 0; i < config->hpd_reg_cnt; i++) { + struct regulator *reg; + + reg = devm_regulator_get(&pdev->dev, + config->hpd_reg_names[i]); + if (IS_ERR(reg)) { + ret = PTR_ERR(reg); + dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n", + config->hpd_reg_names[i], ret); + goto fail; + } + + hdmi->hpd_regs[i] = reg; + } + + hdmi->pwr_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_regs[0]) * + config->pwr_reg_cnt, GFP_KERNEL); + if (!hdmi->pwr_regs) { + ret = -ENOMEM; + goto fail; + } + for (i = 0; i < config->pwr_reg_cnt; i++) { + struct regulator *reg; + + reg = devm_regulator_get(&pdev->dev, + config->pwr_reg_names[i]); + if (IS_ERR(reg)) { + ret = PTR_ERR(reg); + dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n", + config->pwr_reg_names[i], ret); + goto fail; + } + + hdmi->pwr_regs[i] = reg; + } + + hdmi->hpd_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_clks[0]) * + config->hpd_clk_cnt, GFP_KERNEL); + if (!hdmi->hpd_clks) { + ret = -ENOMEM; + goto fail; + } + for (i = 0; i < config->hpd_clk_cnt; i++) { + struct clk *clk; + + clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]); + if (IS_ERR(clk)) { + ret = PTR_ERR(clk); + dev_err(&pdev->dev, "failed to get hpd clk: %s (%d)\n", + config->hpd_clk_names[i], ret); + goto fail; + } + + hdmi->hpd_clks[i] = clk; + } + + hdmi->pwr_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_clks[0]) * + config->pwr_clk_cnt, GFP_KERNEL); + if (!hdmi->pwr_clks) { + ret = -ENOMEM; + goto fail; + } + for (i = 0; i < config->pwr_clk_cnt; i++) { + struct clk *clk; + + clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]); + if (IS_ERR(clk)) { + ret = PTR_ERR(clk); + dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n", + config->pwr_clk_names[i], ret); + goto fail; + } + + hdmi->pwr_clks[i] = clk; + } + + hdmi->i2c = hdmi_i2c_init(hdmi); + if (IS_ERR(hdmi->i2c)) { + ret = PTR_ERR(hdmi->i2c); + dev_err(&pdev->dev, "failed to get i2c: %d\n", ret); + hdmi->i2c = NULL; + goto fail; + } + + return hdmi; + +fail: + if (hdmi) + hdmi_destroy(hdmi); + + return ERR_PTR(ret); +} + +/* Second part of initialization, the drm/kms level modeset_init, + * constructs/initializes mode objects, etc, is called from master + * driver (not hdmi sub-device's probe/bind!) + * + * Any resource (regulator/clk/etc) which could be missing at boot + * should be handled in hdmi_init() so that failure happens from + * hdmi sub-device's probe. + */ +int hdmi_modeset_init(struct hdmi *hdmi, + struct drm_device *dev, struct drm_encoder *encoder) +{ + struct msm_drm_private *priv = dev->dev_private; + struct platform_device *pdev = hdmi->pdev; + int ret; + + hdmi->dev = dev; + hdmi->encoder = encoder; + + hdmi_audio_infoframe_init(&hdmi->audio.infoframe); + + hdmi->bridge = hdmi_bridge_init(hdmi); + if (IS_ERR(hdmi->bridge)) { + ret = PTR_ERR(hdmi->bridge); + dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret); + hdmi->bridge = NULL; + goto fail; + } + + hdmi->connector = hdmi_connector_init(hdmi); + if (IS_ERR(hdmi->connector)) { + ret = PTR_ERR(hdmi->connector); + dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret); + hdmi->connector = NULL; + goto fail; + } + + hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); + if (hdmi->irq < 0) { + ret = hdmi->irq; + dev_err(dev->dev, "failed to get irq: %d\n", ret); + goto fail; + } + + ret = devm_request_irq(&pdev->dev, hdmi->irq, + hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + "hdmi_isr", hdmi); + if (ret < 0) { + dev_err(dev->dev, "failed to request IRQ%u: %d\n", + hdmi->irq, ret); + goto fail; + } + + encoder->bridge = hdmi->bridge; + + priv->bridges[priv->num_bridges++] = hdmi->bridge; + priv->connectors[priv->num_connectors++] = hdmi->connector; + + platform_set_drvdata(pdev, hdmi); + + return 0; + +fail: + /* bridge is normally destroyed by drm: */ + if (hdmi->bridge) { + hdmi_bridge_destroy(hdmi->bridge); + hdmi->bridge = NULL; + } + if (hdmi->connector) { + hdmi->connector->funcs->destroy(hdmi->connector); + hdmi->connector = NULL; + } + + return ret; +} + +/* + * The hdmi device: + */ + +#include <linux/of_gpio.h> + +#define HDMI_CFG(item, entry) \ + .item ## _names = item ##_names_ ## entry, \ + .item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry) + +static struct hdmi_platform_config hdmi_tx_8660_config = { + .phy_init = hdmi_phy_8x60_init, +}; + +static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"}; +static const char *hpd_clk_names_8960[] = {"core_clk", "master_iface_clk", "slave_iface_clk"}; + +static struct hdmi_platform_config hdmi_tx_8960_config = { + .phy_init = hdmi_phy_8960_init, + HDMI_CFG(hpd_reg, 8960), + HDMI_CFG(hpd_clk, 8960), +}; + +static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"}; +static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"}; +static const char *pwr_clk_names_8x74[] = {"extp_clk", "alt_iface_clk"}; +static const char *hpd_clk_names_8x74[] = {"iface_clk", "core_clk", "mdp_core_clk"}; +static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0}; + +static struct hdmi_platform_config hdmi_tx_8074_config = { + .phy_init = hdmi_phy_8x74_init, + HDMI_CFG(pwr_reg, 8x74), + HDMI_CFG(hpd_reg, 8x74), + HDMI_CFG(pwr_clk, 8x74), + HDMI_CFG(hpd_clk, 8x74), + .hpd_freq = hpd_clk_freq_8x74, +}; + +static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"}; + +static struct hdmi_platform_config hdmi_tx_8084_config = { + .phy_init = hdmi_phy_8x74_init, + HDMI_CFG(pwr_reg, 8x74), + HDMI_CFG(hpd_reg, 8084), + HDMI_CFG(pwr_clk, 8x74), + HDMI_CFG(hpd_clk, 8x74), + .hpd_freq = hpd_clk_freq_8x74, +}; + +static const struct of_device_id dt_match[] = { + { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config }, + { .compatible = "qcom,hdmi-tx-8074", .data = &hdmi_tx_8074_config }, + { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config }, + { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config }, + {} +}; + +#ifdef CONFIG_OF +static int get_gpio(struct device *dev, struct device_node *of_node, const char *name) +{ + int gpio = of_get_named_gpio(of_node, name, 0); + if (gpio < 0) { + char name2[32]; + snprintf(name2, sizeof(name2), "%s-gpio", name); + gpio = of_get_named_gpio(of_node, name2, 0); + if (gpio < 0) { + dev_err(dev, "failed to get gpio: %s (%d)\n", + name, gpio); + gpio = -1; + } + } + return gpio; +} +#endif + +static int hdmi_bind(struct device *dev, struct device *master, void *data) +{ + struct drm_device *drm = dev_get_drvdata(master); + struct msm_drm_private *priv = drm->dev_private; + static struct hdmi_platform_config *hdmi_cfg; + struct hdmi *hdmi; +#ifdef CONFIG_OF + struct device_node *of_node = dev->of_node; + const struct of_device_id *match; + + match = of_match_node(dt_match, of_node); + if (match && match->data) { + hdmi_cfg = (struct hdmi_platform_config *)match->data; + DBG("hdmi phy: %s", match->compatible); + } else { + dev_err(dev, "unknown phy: %s\n", of_node->name); + return -ENXIO; + } + + hdmi_cfg->mmio_name = "core_physical"; + hdmi_cfg->ddc_clk_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-clk"); + hdmi_cfg->ddc_data_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-data"); + hdmi_cfg->hpd_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-hpd"); + hdmi_cfg->mux_en_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-en"); + hdmi_cfg->mux_sel_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-sel"); + hdmi_cfg->mux_lpm_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-lpm"); + +#else + static struct hdmi_platform_config config = {}; + static const char *hpd_clk_names[] = { + "core_clk", "master_iface_clk", "slave_iface_clk", + }; + if (cpu_is_apq8064()) { + static const char *hpd_reg_names[] = {"8921_hdmi_mvs"}; + config.phy_init = hdmi_phy_8960_init; + config.mmio_name = "hdmi_msm_hdmi_addr"; + config.hpd_reg_names = hpd_reg_names; + config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); + config.hpd_clk_names = hpd_clk_names; + config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); + config.ddc_clk_gpio = 70; + config.ddc_data_gpio = 71; + config.hpd_gpio = 72; + config.mux_en_gpio = -1; + config.mux_sel_gpio = -1; + } else if (cpu_is_msm8960() || cpu_is_msm8960ab()) { + static const char *hpd_reg_names[] = {"8921_hdmi_mvs"}; + config.phy_init = hdmi_phy_8960_init; + config.mmio_name = "hdmi_msm_hdmi_addr"; + config.hpd_reg_names = hpd_reg_names; + config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); + config.hpd_clk_names = hpd_clk_names; + config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); + config.ddc_clk_gpio = 100; + config.ddc_data_gpio = 101; + config.hpd_gpio = 102; + config.mux_en_gpio = -1; + config.mux_sel_gpio = -1; + } else if (cpu_is_msm8x60()) { + static const char *hpd_reg_names[] = { + "8901_hdmi_mvs", "8901_mpp0" + }; + config.phy_init = hdmi_phy_8x60_init; + config.mmio_name = "hdmi_msm_hdmi_addr"; + config.hpd_reg_names = hpd_reg_names; + config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); + config.hpd_clk_names = hpd_clk_names; + config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); + config.ddc_clk_gpio = 170; + config.ddc_data_gpio = 171; + config.hpd_gpio = 172; + config.mux_en_gpio = -1; + config.mux_sel_gpio = -1; + } + hdmi_cfg = &config; +#endif + dev->platform_data = hdmi_cfg; + + hdmi = hdmi_init(to_platform_device(dev)); + if (IS_ERR(hdmi)) + return PTR_ERR(hdmi); + priv->hdmi = hdmi; + + return 0; +} + +static void hdmi_unbind(struct device *dev, struct device *master, + void *data) +{ + struct drm_device *drm = dev_get_drvdata(master); + struct msm_drm_private *priv = drm->dev_private; + if (priv->hdmi) { + hdmi_destroy(priv->hdmi); + priv->hdmi = NULL; + } +} + +static const struct component_ops hdmi_ops = { + .bind = hdmi_bind, + .unbind = hdmi_unbind, +}; + +static int hdmi_dev_probe(struct platform_device *pdev) +{ + return component_add(&pdev->dev, &hdmi_ops); +} + +static int hdmi_dev_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &hdmi_ops); + return 0; +} + +static struct platform_driver hdmi_driver = { + .probe = hdmi_dev_probe, + .remove = hdmi_dev_remove, + .driver = { + .name = "hdmi_msm", + .of_match_table = dt_match, + }, +}; + +void __init hdmi_register(void) +{ + platform_driver_register(&hdmi_driver); +} + +void __exit hdmi_unregister(void) +{ + platform_driver_unregister(&hdmi_driver); +} |