drivers/media/cec/platform/s5p/s5p_cec.h

   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_ */