7 /* enough bytes to match alignment of following func pointer */
15 void (*putc)(const char c);
16 void (*puts)(const char *s);
17 #if CONFIG_POST & CONFIG_SYS_POST_UART
20 struct serial_device *next;
23 void default_serial_puts(const char *s);
25 extern struct serial_device serial_smc_device;
26 extern struct serial_device serial_scc_device;
27 extern struct serial_device *default_serial_console(void);
29 #if defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) || \
30 defined(CONFIG_MPC86xx) || \
31 defined(CONFIG_TEGRA) || defined(CONFIG_SYS_COREBOOT) || \
32 defined(CONFIG_MICROBLAZE)
33 extern struct serial_device serial0_device;
34 extern struct serial_device serial1_device;
37 extern struct serial_device eserial1_device;
38 extern struct serial_device eserial2_device;
39 extern struct serial_device eserial3_device;
40 extern struct serial_device eserial4_device;
41 extern struct serial_device eserial5_device;
42 extern struct serial_device eserial6_device;
44 extern void serial_register(struct serial_device *);
45 extern void serial_initialize(void);
46 extern void serial_stdio_init(void);
47 extern int serial_assign(const char *name);
48 extern void serial_reinit_all(void);
53 extern int usbtty_getc(void);
54 extern void usbtty_putc(const char c);
55 extern void usbtty_puts(const char *str);
56 extern int usbtty_tstc(void);
61 #define usbtty_getc() 0
62 #define usbtty_putc(a)
63 #define usbtty_puts(a)
64 #define usbtty_tstc() 0
66 #endif /* CONFIG_USB_TTY */
77 * struct struct dm_serial_ops - Driver model serial operations
79 * The uclass interface is implemented by all serial devices which use
82 struct dm_serial_ops {
84 * setbrg() - Set up the baud rate generator
86 * Adjust baud rate divisors to set up a new baud rate for this
87 * device. Not all devices will support all rates. If the rate
88 * cannot be supported, the driver is free to select the nearest
89 * available rate. or return -EINVAL if this is not possible.
91 * @dev: Device pointer
92 * @baudrate: New baud rate to use
93 * @return 0 if OK, -ve on error
95 int (*setbrg)(struct udevice *dev, int baudrate);
97 * getc() - Read a character and return it
99 * If no character is available, this should return -EAGAIN without
102 * @dev: Device pointer
103 * @return character (0..255), -ve on error
105 int (*getc)(struct udevice *dev);
107 * putc() - Write a character
109 * @dev: Device pointer
110 * @ch: character to write
111 * @return 0 if OK, -ve on error
113 int (*putc)(struct udevice *dev, const char ch);
115 * pending() - Check if input/output characters are waiting
117 * This can be used to return an indication of the number of waiting
118 * characters if the driver knows this (e.g. by looking at the FIFO
119 * level). It is acceptable to return 1 if an indeterminant number
120 * of characters is waiting.
122 * This method is optional.
124 * @dev: Device pointer
125 * @input: true to check input characters, false for output
126 * @return number of waiting characters, 0 for none, -ve on error
128 int (*pending)(struct udevice *dev, bool input);
130 * clear() - Clear the serial FIFOs/holding registers
132 * This method is optional.
134 * This quickly clears any input/output characters from the UART.
135 * If this is not possible, but characters still exist, then it
136 * is acceptable to return -EAGAIN (try again) or -EINVAL (not
139 * @dev: Device pointer
140 * @return 0 if OK, -ve on error
142 int (*clear)(struct udevice *dev);
143 #if CONFIG_POST & CONFIG_SYS_POST_UART
145 * loop() - Control serial device loopback mode
147 * @dev: Device pointer
148 * @on: 1 to turn loopback on, 0 to turn if off
150 int (*loop)(struct udevice *dev, int on);
153 * setparity() - Set up the parity
155 * Set up a new parity for this device.
157 * @dev: Device pointer
158 * @parity: parity to use
159 * @return 0 if OK, -ve on error
161 int (*setparity)(struct udevice *dev, enum serial_par parity);
165 * struct serial_dev_priv - information about a device used by the uclass
167 * @sdev: stdio device attached to this uart
169 * @buf: Pointer to the RX buffer
170 * @rd_ptr: Read pointer in the RX buffer
171 * @wr_ptr: Write pointer in the RX buffer
173 struct serial_dev_priv {
174 struct stdio_dev *sdev;
181 /* Access the serial operations for a device */
182 #define serial_get_ops(dev) ((struct dm_serial_ops *)(dev)->driver->ops)
184 void atmel_serial_initialize(void);
185 void au1x00_serial_initialize(void);
186 void mcf_serial_initialize(void);
187 void mpc85xx_serial_initialize(void);
188 void mpc8xx_serial_initialize(void);
189 void mxc_serial_initialize(void);
190 void ns16550_serial_initialize(void);
191 void pl01x_serial_initialize(void);
192 void pxa_serial_initialize(void);
193 void sh_serial_initialize(void);