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@@ -29,7 +29,6 @@
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#include <linux/timer.h>
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#include <linux/cec-funcs.h>
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#include <media/rc-core.h>
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-#include <media/cec-edid.h>
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#include <media/cec-notifier.h>
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/**
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@@ -204,6 +203,9 @@ static inline bool cec_is_sink(const struct cec_adapter *adap)
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return adap->phys_addr == 0;
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}
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+#define cec_phys_addr_exp(pa) \
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+ ((pa) >> 12), ((pa) >> 8) & 0xf, ((pa) >> 4) & 0xf, (pa) & 0xf
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+
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#if IS_ENABLED(CONFIG_CEC_CORE)
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struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
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void *priv, const char *name, u32 caps, u8 available_las);
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@@ -223,6 +225,81 @@ void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt,
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u8 nack_cnt, u8 low_drive_cnt, u8 error_cnt);
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void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg);
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+/**
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+ * cec_get_edid_phys_addr() - find and return the physical address
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+ *
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+ * @edid: pointer to the EDID data
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+ * @size: size in bytes of the EDID data
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+ * @offset: If not %NULL then the location of the physical address
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+ * bytes in the EDID will be returned here. This is set to 0
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+ * if there is no physical address found.
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+ *
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+ * Return: the physical address or CEC_PHYS_ADDR_INVALID if there is none.
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+ */
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+u16 cec_get_edid_phys_addr(const u8 *edid, unsigned int size,
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+ unsigned int *offset);
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+
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+/**
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+ * cec_set_edid_phys_addr() - find and set the physical address
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+ *
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+ * @edid: pointer to the EDID data
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+ * @size: size in bytes of the EDID data
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+ * @phys_addr: the new physical address
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+ *
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+ * This function finds the location of the physical address in the EDID
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+ * and fills in the given physical address and updates the checksum
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+ * at the end of the EDID block. It does nothing if the EDID doesn't
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+ * contain a physical address.
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+ */
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+void cec_set_edid_phys_addr(u8 *edid, unsigned int size, u16 phys_addr);
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+
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+/**
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+ * cec_phys_addr_for_input() - calculate the PA for an input
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+ *
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+ * @phys_addr: the physical address of the parent
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+ * @input: the number of the input port, must be between 1 and 15
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+ *
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+ * This function calculates a new physical address based on the input
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+ * port number. For example:
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+ *
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+ * PA = 0.0.0.0 and input = 2 becomes 2.0.0.0
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+ *
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+ * PA = 3.0.0.0 and input = 1 becomes 3.1.0.0
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+ *
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+ * PA = 3.2.1.0 and input = 5 becomes 3.2.1.5
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+ *
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+ * PA = 3.2.1.3 and input = 5 becomes f.f.f.f since it maxed out the depth.
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+ *
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+ * Return: the new physical address or CEC_PHYS_ADDR_INVALID.
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+ */
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+u16 cec_phys_addr_for_input(u16 phys_addr, u8 input);
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+
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+/**
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+ * cec_phys_addr_validate() - validate a physical address from an EDID
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+ *
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+ * @phys_addr: the physical address to validate
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+ * @parent: if not %NULL, then this is filled with the parents PA.
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+ * @port: if not %NULL, then this is filled with the input port.
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+ *
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+ * This validates a physical address as read from an EDID. If the
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+ * PA is invalid (such as 1.0.1.0 since '0' is only allowed at the end),
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+ * then it will return -EINVAL.
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+ *
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+ * The parent PA is passed into %parent and the input port is passed into
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+ * %port. For example:
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+ *
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+ * PA = 0.0.0.0: has parent 0.0.0.0 and input port 0.
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+ *
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+ * PA = 1.0.0.0: has parent 0.0.0.0 and input port 1.
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+ *
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+ * PA = 3.2.0.0: has parent 3.0.0.0 and input port 2.
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+ *
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+ * PA = f.f.f.f: has parent f.f.f.f and input port 0.
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+ *
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+ * Return: 0 if the PA is valid, -EINVAL if not.
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+ */
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+int cec_phys_addr_validate(u16 phys_addr, u16 *parent, u16 *port);
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+
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#ifdef CONFIG_MEDIA_CEC_NOTIFIER
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void cec_register_cec_notifier(struct cec_adapter *adap,
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struct cec_notifier *notifier);
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@@ -249,6 +326,29 @@ static inline void cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr,
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{
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}
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+static inline u16 cec_get_edid_phys_addr(const u8 *edid, unsigned int size,
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+ unsigned int *offset)
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+{
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+ if (offset)
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+ *offset = 0;
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+ return CEC_PHYS_ADDR_INVALID;
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+}
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+
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+static inline void cec_set_edid_phys_addr(u8 *edid, unsigned int size,
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+ u16 phys_addr)
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+{
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+}
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+
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+static inline u16 cec_phys_addr_for_input(u16 phys_addr, u8 input)
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+{
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+ return CEC_PHYS_ADDR_INVALID;
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+}
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+
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+static inline int cec_phys_addr_validate(u16 phys_addr, u16 *parent, u16 *port)
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+{
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+ return 0;
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+}
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+
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#endif
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#endif /* _MEDIA_CEC_H */
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