1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* drivers/media/platform/s5p-cec/s5p_cec.h 3 * 4 * Samsung S5P HDMI CEC driver 5 * 6 * Copyright (c) 2014 Samsung Electronics Co., Ltd. 7 */ 8 9 #ifndef _S5P_CEC_H_ 10 #define _S5P_CEC_H_ __FILE__ 11 12 #include <linux/clk.h> 13 #include <linux/interrupt.h> 14 #include <linux/kernel.h> 15 #include <linux/mfd/syscon.h> 16 #include <linux/module.h> 17 #include <linux/of.h> 18 #include <linux/platform_device.h> 19 #include <linux/pm_runtime.h> 20 #include <linux/timer.h> 21 #include <linux/workqueue.h> 22 #include <media/cec.h> 23 24 #include "exynos_hdmi_cec.h" 25 #include "regs-cec.h" 26 #include "s5p_cec.h" 27 28 #define CEC_NAME "s5p-cec" 29 30 #define CEC_STATUS_TX_RUNNING (1 << 0) 31 #define CEC_STATUS_TX_TRANSFERRING (1 << 1) 32 #define CEC_STATUS_TX_DONE (1 << 2) 33 #define CEC_STATUS_TX_ERROR (1 << 3) 34 #define CEC_STATUS_TX_NACK (1 << 4) 35 #define CEC_STATUS_TX_BYTES (0xFF << 8) 36 #define CEC_STATUS_RX_RUNNING (1 << 16) 37 #define CEC_STATUS_RX_RECEIVING (1 << 17) 38 #define CEC_STATUS_RX_DONE (1 << 18) 39 #define CEC_STATUS_RX_ERROR (1 << 19) 40 #define CEC_STATUS_RX_BCAST (1 << 20) 41 #define CEC_STATUS_RX_BYTES (0xFF << 24) 42 43 #define CEC_WORKER_TX_DONE (1 << 0) 44 #define CEC_WORKER_RX_MSG (1 << 1) 45 46 /* CEC Rx buffer size */ 47 #define CEC_RX_BUFF_SIZE 16 48 /* CEC Tx buffer size */ 49 #define CEC_TX_BUFF_SIZE 16 50 51 enum cec_state { 52 STATE_IDLE, 53 STATE_BUSY, 54 STATE_DONE, 55 STATE_NACK, 56 STATE_ERROR 57 }; 58 59 struct cec_notifier; 60 61 struct s5p_cec_dev { 62 struct cec_adapter *adap; 63 struct clk *clk; 64 struct device *dev; 65 struct mutex lock; 66 struct regmap *pmu; 67 struct cec_notifier *notifier; 68 int irq; 69 void __iomem *reg; 70 71 enum cec_state rx; 72 enum cec_state tx; 73 struct cec_msg msg; 74 }; 75 76 #endif /* _S5P_CEC_H_ */ 77