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);
55 int usbtty_getc(struct stdio_dev *dev);
56 void usbtty_putc(struct stdio_dev *dev, const char c);
57 void usbtty_puts(struct stdio_dev *dev, const char *str);
58 int usbtty_tstc(struct stdio_dev *dev);
63 #define usbtty_getc(dev) 0
64 #define usbtty_putc(dev, a)
65 #define usbtty_puts(dev, a)
66 #define usbtty_tstc(dev) 0
68 #endif /* CONFIG_USB_TTY */
78 #define SERIAL_PAR_SHIFT 0
79 #define SERIAL_PAR_MASK (0x03 << SERIAL_PAR_SHIFT)
80 #define SERIAL_SET_PARITY(parity) \
81 ((parity << SERIAL_PAR_SHIFT) & SERIAL_PAR_MASK)
82 #define SERIAL_GET_PARITY(config) \
83 ((config & SERIAL_PAR_MASK) >> SERIAL_PAR_SHIFT)
92 #define SERIAL_BITS_SHIFT 2
93 #define SERIAL_BITS_MASK (0x3 << SERIAL_BITS_SHIFT)
94 #define SERIAL_SET_BITS(bits) \
95 ((bits << SERIAL_BITS_SHIFT) & SERIAL_BITS_MASK)
96 #define SERIAL_GET_BITS(config) \
97 ((config & SERIAL_BITS_MASK) >> SERIAL_BITS_SHIFT)
100 SERIAL_HALF_STOP, /* 0.5 stop bit */
101 SERIAL_ONE_STOP, /* 1 stop bit */
102 SERIAL_ONE_HALF_STOP, /* 1.5 stop bit */
103 SERIAL_TWO_STOP /* 2 stop bit */
106 #define SERIAL_STOP_SHIFT 4
107 #define SERIAL_STOP_MASK (0x3 << SERIAL_STOP_SHIFT)
108 #define SERIAL_SET_STOP(stop) \
109 ((stop << SERIAL_STOP_SHIFT) & SERIAL_STOP_MASK)
110 #define SERIAL_GET_STOP(config) \
111 ((config & SERIAL_STOP_MASK) >> SERIAL_STOP_SHIFT)
113 #define SERIAL_CONFIG(par, bits, stop) \
114 (par << SERIAL_PAR_SHIFT | \
115 bits << SERIAL_BITS_SHIFT | \
116 stop << SERIAL_STOP_SHIFT)
118 #define SERIAL_DEFAULT_CONFIG \
119 (SERIAL_PAR_NONE << SERIAL_PAR_SHIFT | \
120 SERIAL_8_BITS << SERIAL_BITS_SHIFT | \
121 SERIAL_ONE_STOP << SERIAL_STOP_SHIFT)
123 enum serial_chip_type {
124 SERIAL_CHIP_UNKNOWN = -1,
125 SERIAL_CHIP_16550_COMPATIBLE,
128 enum adr_space_type {
129 SERIAL_ADDRESS_SPACE_MEMORY = 0,
130 SERIAL_ADDRESS_SPACE_IO,
134 * struct serial_device_info - structure to hold serial device info
136 * @type: type of the UART chip
137 * @addr_space: address space to access the registers
138 * @addr: physical address of the registers
139 * @reg_width: size (in bytes) of the IO accesses to the registers
140 * @reg_offset: offset to apply to the @addr from the start of the registers
141 * @reg_shift: quantity to shift the register offsets by
142 * @baudrate: baud rate
144 struct serial_device_info {
145 enum serial_chip_type type;
146 enum adr_space_type addr_space;
151 unsigned int baudrate;
154 #define SERIAL_DEFAULT_ADDRESS 0xBADACCE5
157 * struct struct dm_serial_ops - Driver model serial operations
159 * The uclass interface is implemented by all serial devices which use
162 struct dm_serial_ops {
164 * setbrg() - Set up the baud rate generator
166 * Adjust baud rate divisors to set up a new baud rate for this
167 * device. Not all devices will support all rates. If the rate
168 * cannot be supported, the driver is free to select the nearest
169 * available rate. or return -EINVAL if this is not possible.
171 * @dev: Device pointer
172 * @baudrate: New baud rate to use
173 * @return 0 if OK, -ve on error
175 int (*setbrg)(struct udevice *dev, int baudrate);
177 * getc() - Read a character and return it
179 * If no character is available, this should return -EAGAIN without
182 * @dev: Device pointer
183 * @return character (0..255), -ve on error
185 int (*getc)(struct udevice *dev);
187 * putc() - Write a character
189 * @dev: Device pointer
190 * @ch: character to write
191 * @return 0 if OK, -ve on error
193 int (*putc)(struct udevice *dev, const char ch);
195 * pending() - Check if input/output characters are waiting
197 * This can be used to return an indication of the number of waiting
198 * characters if the driver knows this (e.g. by looking at the FIFO
199 * level). It is acceptable to return 1 if an indeterminant number
200 * of characters is waiting.
202 * This method is optional.
204 * @dev: Device pointer
205 * @input: true to check input characters, false for output
206 * @return number of waiting characters, 0 for none, -ve on error
208 int (*pending)(struct udevice *dev, bool input);
210 * clear() - Clear the serial FIFOs/holding registers
212 * This method is optional.
214 * This quickly clears any input/output characters from the UART.
215 * If this is not possible, but characters still exist, then it
216 * is acceptable to return -EAGAIN (try again) or -EINVAL (not
219 * @dev: Device pointer
220 * @return 0 if OK, -ve on error
222 int (*clear)(struct udevice *dev);
223 #if CONFIG_POST & CONFIG_SYS_POST_UART
225 * loop() - Control serial device loopback mode
227 * @dev: Device pointer
228 * @on: 1 to turn loopback on, 0 to turn if off
230 int (*loop)(struct udevice *dev, int on);
234 * getconfig() - Get the uart configuration
235 * (parity, 5/6/7/8 bits word length, stop bits)
237 * Get a current config for this device.
239 * @dev: Device pointer
240 * @serial_config: Returns config information (see SERIAL_... above)
241 * @return 0 if OK, -ve on error
243 int (*getconfig)(struct udevice *dev, uint *serial_config);
245 * setconfig() - Set up the uart configuration
246 * (parity, 5/6/7/8 bits word length, stop bits)
248 * Set up a new config for this device.
250 * @dev: Device pointer
251 * @serial_config: number of bits, parity and number of stopbits to use
252 * @return 0 if OK, -ve on error
254 int (*setconfig)(struct udevice *dev, uint serial_config);
256 * getinfo() - Get serial device information
258 * @dev: Device pointer
259 * @info: struct serial_device_info to fill
260 * @return 0 if OK, -ve on error
262 int (*getinfo)(struct udevice *dev, struct serial_device_info *info);
266 * struct serial_dev_priv - information about a device used by the uclass
268 * @sdev: stdio device attached to this uart
270 * @buf: Pointer to the RX buffer
271 * @rd_ptr: Read pointer in the RX buffer
272 * @wr_ptr: Write pointer in the RX buffer
274 struct serial_dev_priv {
275 struct stdio_dev *sdev;
282 /* Access the serial operations for a device */
283 #define serial_get_ops(dev) ((struct dm_serial_ops *)(dev)->driver->ops)
286 * serial_getconfig() - Get the uart configuration
287 * (parity, 5/6/7/8 bits word length, stop bits)
289 * Get a current config for this device.
291 * @dev: Device pointer
292 * @serial_config: Returns config information (see SERIAL_... above)
293 * @return 0 if OK, -ve on error
295 int serial_getconfig(struct udevice *dev, uint *config);
298 * serial_setconfig() - Set up the uart configuration
299 * (parity, 5/6/7/8 bits word length, stop bits)
301 * Set up a new config for this device.
303 * @dev: Device pointer
304 * @serial_config: number of bits, parity and number of stopbits to use
305 * @return 0 if OK, -ve on error
307 int serial_setconfig(struct udevice *dev, uint config);
310 * serial_getinfo() - Get serial device information
312 * @dev: Device pointer
313 * @info: struct serial_device_info to fill
314 * @return 0 if OK, -ve on error
316 int serial_getinfo(struct udevice *dev, struct serial_device_info *info);
318 void atmel_serial_initialize(void);
319 void mcf_serial_initialize(void);
320 void mpc85xx_serial_initialize(void);
321 void mxc_serial_initialize(void);
322 void ns16550_serial_initialize(void);
323 void pl01x_serial_initialize(void);
324 void pxa_serial_initialize(void);
325 void sh_serial_initialize(void);
328 * serial_printf() - Write a formatted string to the serial console
330 * The total size of the output must be less than CONFIG_SYS_PBSIZE.
332 * @fmt: Printf format string, followed by format arguments
333 * @return number of characters written
335 int serial_printf(const char *fmt, ...)
336 __attribute__ ((format (__printf__, 1, 2)));