From 4be5e8648b0c287aefc6ac3f3a0b12c696054f43 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 15 Apr 2020 11:03:40 +0200 Subject: media: move CEC platform drivers to a separate directory As CEC support doesn't depend on MEDIA_SUPPORT, let's place the platform drivers outside the media menu. As a side effect, instead of depends on PCI, seco driver can select it (and DMI). Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/s5p-cec/s5p_cec.c | 307 ------------------------------- 1 file changed, 307 deletions(-) delete mode 100644 drivers/media/platform/s5p-cec/s5p_cec.c (limited to 'drivers/media/platform/s5p-cec/s5p_cec.c') diff --git a/drivers/media/platform/s5p-cec/s5p_cec.c b/drivers/media/platform/s5p-cec/s5p_cec.c deleted file mode 100644 index 2a3e7ffefe0a..000000000000 --- a/drivers/media/platform/s5p-cec/s5p_cec.c +++ /dev/null @@ -1,307 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* drivers/media/platform/s5p-cec/s5p_cec.c - * - * Samsung S5P CEC driver - * - * Copyright (c) 2014 Samsung Electronics Co., Ltd. - * - * This driver is based on the "cec interface driver for exynos soc" by - * SangPil Moon. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "exynos_hdmi_cec.h" -#include "regs-cec.h" -#include "s5p_cec.h" - -#define CEC_NAME "s5p-cec" - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "debug level (0-2)"); - -static int s5p_cec_adap_enable(struct cec_adapter *adap, bool enable) -{ - struct s5p_cec_dev *cec = cec_get_drvdata(adap); - - if (enable) { - pm_runtime_get_sync(cec->dev); - - s5p_cec_reset(cec); - - s5p_cec_set_divider(cec); - s5p_cec_threshold(cec); - - s5p_cec_unmask_tx_interrupts(cec); - s5p_cec_unmask_rx_interrupts(cec); - s5p_cec_enable_rx(cec); - } else { - s5p_cec_mask_tx_interrupts(cec); - s5p_cec_mask_rx_interrupts(cec); - pm_runtime_disable(cec->dev); - } - - return 0; -} - -static int s5p_cec_adap_log_addr(struct cec_adapter *adap, u8 addr) -{ - struct s5p_cec_dev *cec = cec_get_drvdata(adap); - - s5p_cec_set_addr(cec, addr); - return 0; -} - -static int s5p_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, - u32 signal_free_time, struct cec_msg *msg) -{ - struct s5p_cec_dev *cec = cec_get_drvdata(adap); - - /* - * Unclear if 0 retries are allowed by the hardware, so have 1 as - * the minimum. - */ - s5p_cec_copy_packet(cec, msg->msg, msg->len, max(1, attempts - 1)); - return 0; -} - -static irqreturn_t s5p_cec_irq_handler(int irq, void *priv) -{ - struct s5p_cec_dev *cec = priv; - u32 status = 0; - - status = s5p_cec_get_status(cec); - - dev_dbg(cec->dev, "irq received\n"); - - if (status & CEC_STATUS_TX_DONE) { - if (status & CEC_STATUS_TX_NACK) { - dev_dbg(cec->dev, "CEC_STATUS_TX_NACK set\n"); - cec->tx = STATE_NACK; - } else if (status & CEC_STATUS_TX_ERROR) { - dev_dbg(cec->dev, "CEC_STATUS_TX_ERROR set\n"); - cec->tx = STATE_ERROR; - } else { - dev_dbg(cec->dev, "CEC_STATUS_TX_DONE\n"); - cec->tx = STATE_DONE; - } - s5p_clr_pending_tx(cec); - } - - if (status & CEC_STATUS_RX_DONE) { - if (status & CEC_STATUS_RX_ERROR) { - dev_dbg(cec->dev, "CEC_STATUS_RX_ERROR set\n"); - s5p_cec_rx_reset(cec); - s5p_cec_enable_rx(cec); - } else { - dev_dbg(cec->dev, "CEC_STATUS_RX_DONE set\n"); - if (cec->rx != STATE_IDLE) - dev_dbg(cec->dev, "Buffer overrun (worker did not process previous message)\n"); - cec->rx = STATE_BUSY; - cec->msg.len = status >> 24; - cec->msg.rx_status = CEC_RX_STATUS_OK; - s5p_cec_get_rx_buf(cec, cec->msg.len, - cec->msg.msg); - cec->rx = STATE_DONE; - s5p_cec_enable_rx(cec); - } - /* Clear interrupt pending bit */ - s5p_clr_pending_rx(cec); - } - return IRQ_WAKE_THREAD; -} - -static irqreturn_t s5p_cec_irq_handler_thread(int irq, void *priv) -{ - struct s5p_cec_dev *cec = priv; - - dev_dbg(cec->dev, "irq processing thread\n"); - switch (cec->tx) { - case STATE_DONE: - cec_transmit_done(cec->adap, CEC_TX_STATUS_OK, 0, 0, 0, 0); - cec->tx = STATE_IDLE; - break; - case STATE_NACK: - cec_transmit_done(cec->adap, - CEC_TX_STATUS_MAX_RETRIES | CEC_TX_STATUS_NACK, - 0, 1, 0, 0); - cec->tx = STATE_IDLE; - break; - case STATE_ERROR: - cec_transmit_done(cec->adap, - CEC_TX_STATUS_MAX_RETRIES | CEC_TX_STATUS_ERROR, - 0, 0, 0, 1); - cec->tx = STATE_IDLE; - break; - case STATE_BUSY: - dev_err(cec->dev, "state set to busy, this should not occur here\n"); - break; - default: - break; - } - - switch (cec->rx) { - case STATE_DONE: - cec_received_msg(cec->adap, &cec->msg); - cec->rx = STATE_IDLE; - break; - default: - break; - } - - return IRQ_HANDLED; -} - -static const struct cec_adap_ops s5p_cec_adap_ops = { - .adap_enable = s5p_cec_adap_enable, - .adap_log_addr = s5p_cec_adap_log_addr, - .adap_transmit = s5p_cec_adap_transmit, -}; - -static int s5p_cec_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct device *hdmi_dev; - struct resource *res; - struct s5p_cec_dev *cec; - bool needs_hpd = of_property_read_bool(pdev->dev.of_node, "needs-hpd"); - int ret; - - hdmi_dev = cec_notifier_parse_hdmi_phandle(dev); - - if (IS_ERR(hdmi_dev)) - return PTR_ERR(hdmi_dev); - - cec = devm_kzalloc(&pdev->dev, sizeof(*cec), GFP_KERNEL); - if (!cec) - return -ENOMEM; - - cec->dev = dev; - - cec->irq = platform_get_irq(pdev, 0); - if (cec->irq < 0) - return cec->irq; - - ret = devm_request_threaded_irq(dev, cec->irq, s5p_cec_irq_handler, - s5p_cec_irq_handler_thread, 0, pdev->name, cec); - if (ret) - return ret; - - cec->clk = devm_clk_get(dev, "hdmicec"); - if (IS_ERR(cec->clk)) - return PTR_ERR(cec->clk); - - cec->pmu = syscon_regmap_lookup_by_phandle(dev->of_node, - "samsung,syscon-phandle"); - if (IS_ERR(cec->pmu)) - return -EPROBE_DEFER; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - cec->reg = devm_ioremap_resource(dev, res); - if (IS_ERR(cec->reg)) - return PTR_ERR(cec->reg); - - cec->adap = cec_allocate_adapter(&s5p_cec_adap_ops, cec, CEC_NAME, - CEC_CAP_DEFAULTS | (needs_hpd ? CEC_CAP_NEEDS_HPD : 0) | - CEC_CAP_CONNECTOR_INFO, 1); - ret = PTR_ERR_OR_ZERO(cec->adap); - if (ret) - return ret; - - cec->notifier = cec_notifier_cec_adap_register(hdmi_dev, NULL, - cec->adap); - if (!cec->notifier) { - ret = -ENOMEM; - goto err_delete_adapter; - } - - ret = cec_register_adapter(cec->adap, &pdev->dev); - if (ret) - goto err_notifier; - - platform_set_drvdata(pdev, cec); - pm_runtime_enable(dev); - - dev_dbg(dev, "successfully probed\n"); - return 0; - -err_notifier: - cec_notifier_cec_adap_unregister(cec->notifier, cec->adap); - -err_delete_adapter: - cec_delete_adapter(cec->adap); - return ret; -} - -static int s5p_cec_remove(struct platform_device *pdev) -{ - struct s5p_cec_dev *cec = platform_get_drvdata(pdev); - - cec_notifier_cec_adap_unregister(cec->notifier, cec->adap); - cec_unregister_adapter(cec->adap); - pm_runtime_disable(&pdev->dev); - return 0; -} - -static int __maybe_unused s5p_cec_runtime_suspend(struct device *dev) -{ - struct s5p_cec_dev *cec = dev_get_drvdata(dev); - - clk_disable_unprepare(cec->clk); - return 0; -} - -static int __maybe_unused s5p_cec_runtime_resume(struct device *dev) -{ - struct s5p_cec_dev *cec = dev_get_drvdata(dev); - int ret; - - ret = clk_prepare_enable(cec->clk); - if (ret < 0) - return ret; - return 0; -} - -static const struct dev_pm_ops s5p_cec_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, - pm_runtime_force_resume) - SET_RUNTIME_PM_OPS(s5p_cec_runtime_suspend, s5p_cec_runtime_resume, - NULL) -}; - -static const struct of_device_id s5p_cec_match[] = { - { - .compatible = "samsung,s5p-cec", - }, - {}, -}; -MODULE_DEVICE_TABLE(of, s5p_cec_match); - -static struct platform_driver s5p_cec_pdrv = { - .probe = s5p_cec_probe, - .remove = s5p_cec_remove, - .driver = { - .name = CEC_NAME, - .of_match_table = s5p_cec_match, - .pm = &s5p_cec_pm_ops, - }, -}; - -module_platform_driver(s5p_cec_pdrv); - -MODULE_AUTHOR("Kamil Debski "); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Samsung S5P CEC driver"); -- cgit v1.2.3-59-g8ed1b