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_ARCH_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_stdio_init(void);
46 extern int serial_assign(const char *name);
47 extern void serial_reinit_all(void);
48 int serial_initialize(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 * @clock: UART base clock speed in Hz
143 * @baudrate: baud rate
145 struct serial_device_info {
146 enum serial_chip_type type;
147 enum adr_space_type addr_space;
153 unsigned int baudrate;
156 #define SERIAL_DEFAULT_ADDRESS 0xBADACCE5
157 #define SERIAL_DEFAULT_CLOCK (16 * 115200)
160 * struct struct dm_serial_ops - Driver model serial operations
162 * The uclass interface is implemented by all serial devices which use
165 struct dm_serial_ops {
167 * setbrg() - Set up the baud rate generator
169 * Adjust baud rate divisors to set up a new baud rate for this
170 * device. Not all devices will support all rates. If the rate
171 * cannot be supported, the driver is free to select the nearest
172 * available rate. or return -EINVAL if this is not possible.
174 * @dev: Device pointer
175 * @baudrate: New baud rate to use
176 * @return 0 if OK, -ve on error
178 int (*setbrg)(struct udevice *dev, int baudrate);
180 * getc() - Read a character and return it
182 * If no character is available, this should return -EAGAIN without
185 * @dev: Device pointer
186 * @return character (0..255), -ve on error
188 int (*getc)(struct udevice *dev);
190 * putc() - Write a character
192 * @dev: Device pointer
193 * @ch: character to write
194 * @return 0 if OK, -ve on error
196 int (*putc)(struct udevice *dev, const char ch);
198 * pending() - Check if input/output characters are waiting
200 * This can be used to return an indication of the number of waiting
201 * characters if the driver knows this (e.g. by looking at the FIFO
202 * level). It is acceptable to return 1 if an indeterminant number
203 * of characters is waiting.
205 * This method is optional.
207 * @dev: Device pointer
208 * @input: true to check input characters, false for output
209 * @return number of waiting characters, 0 for none, -ve on error
211 int (*pending)(struct udevice *dev, bool input);
213 * clear() - Clear the serial FIFOs/holding registers
215 * This method is optional.
217 * This quickly clears any input/output characters from the UART.
218 * If this is not possible, but characters still exist, then it
219 * is acceptable to return -EAGAIN (try again) or -EINVAL (not
222 * @dev: Device pointer
223 * @return 0 if OK, -ve on error
225 int (*clear)(struct udevice *dev);
226 #if CONFIG_POST & CONFIG_SYS_POST_UART
228 * loop() - Control serial device loopback mode
230 * @dev: Device pointer
231 * @on: 1 to turn loopback on, 0 to turn if off
233 int (*loop)(struct udevice *dev, int on);
237 * getconfig() - Get the uart configuration
238 * (parity, 5/6/7/8 bits word length, stop bits)
240 * Get a current config for this device.
242 * @dev: Device pointer
243 * @serial_config: Returns config information (see SERIAL_... above)
244 * @return 0 if OK, -ve on error
246 int (*getconfig)(struct udevice *dev, uint *serial_config);
248 * setconfig() - Set up the uart configuration
249 * (parity, 5/6/7/8 bits word length, stop bits)
251 * Set up a new config for this device.
253 * @dev: Device pointer
254 * @serial_config: number of bits, parity and number of stopbits to use
255 * @return 0 if OK, -ve on error
257 int (*setconfig)(struct udevice *dev, uint serial_config);
259 * getinfo() - Get serial device information
261 * @dev: Device pointer
262 * @info: struct serial_device_info to fill
263 * @return 0 if OK, -ve on error
265 int (*getinfo)(struct udevice *dev, struct serial_device_info *info);
269 * struct serial_dev_priv - information about a device used by the uclass
271 * @sdev: stdio device attached to this uart
273 * @buf: Pointer to the RX buffer
274 * @rd_ptr: Read pointer in the RX buffer
275 * @wr_ptr: Write pointer in the RX buffer
277 struct serial_dev_priv {
278 struct stdio_dev *sdev;
285 /* Access the serial operations for a device */
286 #define serial_get_ops(dev) ((struct dm_serial_ops *)(dev)->driver->ops)
289 * serial_getconfig() - Get the uart configuration
290 * (parity, 5/6/7/8 bits word length, stop bits)
292 * Get a current config for this device.
294 * @dev: Device pointer
295 * @serial_config: Returns config information (see SERIAL_... above)
296 * Return: 0 if OK, -ve on error
298 int serial_getconfig(struct udevice *dev, uint *config);
301 * serial_setconfig() - Set up the uart configuration
302 * (parity, 5/6/7/8 bits word length, stop bits)
304 * Set up a new config for this device.
306 * @dev: Device pointer
307 * @serial_config: number of bits, parity and number of stopbits to use
308 * Return: 0 if OK, -ve on error
310 int serial_setconfig(struct udevice *dev, uint config);
313 * serial_getinfo() - Get serial device information
315 * @dev: Device pointer
316 * @info: struct serial_device_info to fill
317 * Return: 0 if OK, -ve on error
319 int serial_getinfo(struct udevice *dev, struct serial_device_info *info);
321 void atmel_serial_initialize(void);
322 void mcf_serial_initialize(void);
323 void mpc85xx_serial_initialize(void);
324 void mxc_serial_initialize(void);
325 void ns16550_serial_initialize(void);
326 void pl01x_serial_initialize(void);
327 void pxa_serial_initialize(void);
328 void sh_serial_initialize(void);
331 * serial_printf() - Write a formatted string to the serial console
333 * The total size of the output must be less than CONFIG_SYS_PBSIZE.
335 * @fmt: Printf format string, followed by format arguments
336 * Return: number of characters written
338 int serial_printf(const char *fmt, ...)
339 __attribute__ ((format (__printf__, 1, 2)));
341 int serial_init(void);
342 void serial_setbrg(void);
343 void serial_putc(const char ch);
344 void serial_putc_raw(const char ch);
345 void serial_puts(const char *str);
346 int serial_getc(void);
347 int serial_tstc(void);