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1 #ifndef __SERIAL_H__
2 #define __SERIAL_H__
3
4 #include <post.h>
5
6 struct serial_device {
7 /* enough bytes to match alignment of following func pointer */
8 char name[16];
9
10 int (*start)(void);
11 int (*stop)(void);
12 void (*setbrg)(void);
13 int (*getc)(void);
14 int (*tstc)(void);
15 void (*putc)(const char c);
16 void (*puts)(const char *s);
17 #if CONFIG_POST & CONFIG_SYS_POST_UART
18 void (*loop)(int);
19 #endif
20 struct serial_device *next;
21 };
22
23 void default_serial_puts(const char *s);
24
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);
28
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;
35 #endif
36
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;
43
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);
49
50 /* For usbtty */
51 #ifdef CONFIG_USB_TTY
52
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);
57
58 #else
59
60 /* stubs */
61 #define usbtty_getc() 0
62 #define usbtty_putc(a)
63 #define usbtty_puts(a)
64 #define usbtty_tstc() 0
65
66 #endif /* CONFIG_USB_TTY */
67
68 struct udevice;
69
70 /**
71 * struct struct dm_serial_ops - Driver model serial operations
72 *
73 * The uclass interface is implemented by all serial devices which use
74 * driver model.
75 */
76 struct dm_serial_ops {
77 /**
78 * setbrg() - Set up the baud rate generator
79 *
80 * Adjust baud rate divisors to set up a new baud rate for this
81 * device. Not all devices will support all rates. If the rate
82 * cannot be supported, the driver is free to select the nearest
83 * available rate. or return -EINVAL if this is not possible.
84 *
85 * @dev: Device pointer
86 * @baudrate: New baud rate to use
87 * @return 0 if OK, -ve on error
88 */
89 int (*setbrg)(struct udevice *dev, int baudrate);
90 /**
91 * getc() - Read a character and return it
92 *
93 * If no character is available, this should return -EAGAIN without
94 * waiting.
95 *
96 * @dev: Device pointer
97 * @return character (0..255), -ve on error
98 */
99 int (*getc)(struct udevice *dev);
100 /**
101 * putc() - Write a character
102 *
103 * @dev: Device pointer
104 * @ch: character to write
105 * @return 0 if OK, -ve on error
106 */
107 int (*putc)(struct udevice *dev, const char ch);
108 /**
109 * pending() - Check if input/output characters are waiting
110 *
111 * This can be used to return an indication of the number of waiting
112 * characters if the driver knows this (e.g. by looking at the FIFO
113 * level). It is acceptable to return 1 if an indeterminant number
114 * of characters is waiting.
115 *
116 * This method is optional.
117 *
118 * @dev: Device pointer
119 * @input: true to check input characters, false for output
120 * @return number of waiting characters, 0 for none, -ve on error
121 */
122 int (*pending)(struct udevice *dev, bool input);
123 /**
124 * clear() - Clear the serial FIFOs/holding registers
125 *
126 * This method is optional.
127 *
128 * This quickly clears any input/output characters from the UART.
129 * If this is not possible, but characters still exist, then it
130 * is acceptable to return -EAGAIN (try again) or -EINVAL (not
131 * supported).
132 *
133 * @dev: Device pointer
134 * @return 0 if OK, -ve on error
135 */
136 int (*clear)(struct udevice *dev);
137 #if CONFIG_POST & CONFIG_SYS_POST_UART
138 /**
139 * loop() - Control serial device loopback mode
140 *
141 * @dev: Device pointer
142 * @on: 1 to turn loopback on, 0 to turn if off
143 */
144 int (*loop)(struct udevice *dev, int on);
145 #endif
146 };
147
148 /**
149 * struct serial_dev_priv - information about a device used by the uclass
150 *
151 * @sdev: stdio device attached to this uart
152 *
153 * @buf: Pointer to the RX buffer
154 * @rd_ptr: Read pointer in the RX buffer
155 * @wr_ptr: Write pointer in the RX buffer
156 */
157 struct serial_dev_priv {
158 struct stdio_dev *sdev;
159
160 char *buf;
161 int rd_ptr;
162 int wr_ptr;
163 };
164
165 /* Access the serial operations for a device */
166 #define serial_get_ops(dev) ((struct dm_serial_ops *)(dev)->driver->ops)
167
168 void amirix_serial_initialize(void);
169 void arc_serial_initialize(void);
170 void arm_dcc_initialize(void);
171 void asc_serial_initialize(void);
172 void atmel_serial_initialize(void);
173 void au1x00_serial_initialize(void);
174 void bfin_jtag_initialize(void);
175 void bfin_serial_initialize(void);
176 void bmw_serial_initialize(void);
177 void clps7111_serial_initialize(void);
178 void cogent_serial_initialize(void);
179 void cpci750_serial_initialize(void);
180 void evb64260_serial_initialize(void);
181 void imx_serial_initialize(void);
182 void iop480_serial_initialize(void);
183 void jz_serial_initialize(void);
184 void leon2_serial_initialize(void);
185 void leon3_serial_initialize(void);
186 void lh7a40x_serial_initialize(void);
187 void lpc32xx_serial_initialize(void);
188 void marvell_serial_initialize(void);
189 void max3100_serial_initialize(void);
190 void mcf_serial_initialize(void);
191 void ml2_serial_initialize(void);
192 void mpc85xx_serial_initialize(void);
193 void mpc8xx_serial_initialize(void);
194 void mxc_serial_initialize(void);
195 void mxs_auart_initialize(void);
196 void ns16550_serial_initialize(void);
197 void oc_serial_initialize(void);
198 void p3mx_serial_initialize(void);
199 void pl01x_serial_initialize(void);
200 void pxa_serial_initialize(void);
201 void s3c24xx_serial_initialize(void);
202 void s5p_serial_initialize(void);
203 void sa1100_serial_initialize(void);
204 void sandbox_serial_initialize(void);
205 void sconsole_serial_initialize(void);
206 void sh_serial_initialize(void);
207 void uartlite_serial_initialize(void);
208 void zynq_serial_initialize(void);
209
210 #endif