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 */
76 #define SERIAL_PAR_SHIFT 0
77 #define SERIAL_PAR_MASK (0x03 << SERIAL_PAR_SHIFT)
78 #define SERIAL_GET_PARITY(config) \
79 ((config & SERIAL_PAR_MASK) >> SERIAL_PAR_SHIFT)
88 #define SERIAL_BITS_SHIFT 2
89 #define SERIAL_BITS_MASK (0x3 << SERIAL_BITS_SHIFT)
90 #define SERIAL_GET_BITS(config) \
91 ((config & SERIAL_BITS_MASK) >> SERIAL_BITS_SHIFT)
94 SERIAL_HALF_STOP, /* 0.5 stop bit */
95 SERIAL_ONE_STOP, /* 1 stop bit */
96 SERIAL_ONE_HALF_STOP, /* 1.5 stop bit */
97 SERIAL_TWO_STOP /* 2 stop bit */
100 #define SERIAL_STOP_SHIFT 4
101 #define SERIAL_STOP_MASK (0x3 << SERIAL_STOP_SHIFT)
102 #define SERIAL_GET_STOP(config) \
103 ((config & SERIAL_STOP_MASK) >> SERIAL_STOP_SHIFT)
105 #define SERIAL_DEFAULT_CONFIG SERIAL_PAR_NONE << SERIAL_PAR_SHIFT | \
106 SERIAL_8_BITS << SERIAL_BITS_SHIFT | \
107 SERIAL_ONE_STOP << SERIAL_STOP_SHIFT
110 * struct struct dm_serial_ops - Driver model serial operations
112 * The uclass interface is implemented by all serial devices which use
115 struct dm_serial_ops {
117 * setbrg() - Set up the baud rate generator
119 * Adjust baud rate divisors to set up a new baud rate for this
120 * device. Not all devices will support all rates. If the rate
121 * cannot be supported, the driver is free to select the nearest
122 * available rate. or return -EINVAL if this is not possible.
124 * @dev: Device pointer
125 * @baudrate: New baud rate to use
126 * @return 0 if OK, -ve on error
128 int (*setbrg)(struct udevice *dev, int baudrate);
130 * getc() - Read a character and return it
132 * If no character is available, this should return -EAGAIN without
135 * @dev: Device pointer
136 * @return character (0..255), -ve on error
138 int (*getc)(struct udevice *dev);
140 * putc() - Write a character
142 * @dev: Device pointer
143 * @ch: character to write
144 * @return 0 if OK, -ve on error
146 int (*putc)(struct udevice *dev, const char ch);
148 * pending() - Check if input/output characters are waiting
150 * This can be used to return an indication of the number of waiting
151 * characters if the driver knows this (e.g. by looking at the FIFO
152 * level). It is acceptable to return 1 if an indeterminant number
153 * of characters is waiting.
155 * This method is optional.
157 * @dev: Device pointer
158 * @input: true to check input characters, false for output
159 * @return number of waiting characters, 0 for none, -ve on error
161 int (*pending)(struct udevice *dev, bool input);
163 * clear() - Clear the serial FIFOs/holding registers
165 * This method is optional.
167 * This quickly clears any input/output characters from the UART.
168 * If this is not possible, but characters still exist, then it
169 * is acceptable to return -EAGAIN (try again) or -EINVAL (not
172 * @dev: Device pointer
173 * @return 0 if OK, -ve on error
175 int (*clear)(struct udevice *dev);
176 #if CONFIG_POST & CONFIG_SYS_POST_UART
178 * loop() - Control serial device loopback mode
180 * @dev: Device pointer
181 * @on: 1 to turn loopback on, 0 to turn if off
183 int (*loop)(struct udevice *dev, int on);
187 * setconfig() - Set up the uart configuration
188 * (parity, 5/6/7/8 bits word length, stop bits)
190 * Set up a new config for this device.
192 * @dev: Device pointer
193 * @parity: parity to use
194 * @bits: bits number to use
195 * @stop: stop bits number to use
196 * @return 0 if OK, -ve on error
198 int (*setconfig)(struct udevice *dev, uint serial_config);
202 * struct serial_dev_priv - information about a device used by the uclass
204 * @sdev: stdio device attached to this uart
206 * @buf: Pointer to the RX buffer
207 * @rd_ptr: Read pointer in the RX buffer
208 * @wr_ptr: Write pointer in the RX buffer
210 struct serial_dev_priv {
211 struct stdio_dev *sdev;
218 /* Access the serial operations for a device */
219 #define serial_get_ops(dev) ((struct dm_serial_ops *)(dev)->driver->ops)
221 void atmel_serial_initialize(void);
222 void mcf_serial_initialize(void);
223 void mpc85xx_serial_initialize(void);
224 void mpc8xx_serial_initialize(void);
225 void mxc_serial_initialize(void);
226 void ns16550_serial_initialize(void);
227 void pl01x_serial_initialize(void);
228 void pxa_serial_initialize(void);
229 void sh_serial_initialize(void);