wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 1 | /* |
| 2 | * COM1 NS16550 support |
Stefan Roese | 88fbf93 | 2010-04-15 16:07:28 +0200 | [diff] [blame] | 3 | * originally from linux source (arch/powerpc/boot/ns16550.c) |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 4 | * modified to use CONFIG_SYS_ISA_MEM and new defines |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 5 | */ |
| 6 | |
Simon Glass | 85d6531 | 2019-12-28 10:44:58 -0700 | [diff] [blame] | 7 | #include <clock_legacy.h> |
Simon Glass | e98e01e | 2014-09-04 16:27:32 -0600 | [diff] [blame] | 8 | #include <common.h> |
Paul Burton | 8aadc56 | 2016-09-08 07:47:29 +0100 | [diff] [blame] | 9 | #include <clk.h> |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 10 | #include <dm.h> |
| 11 | #include <errno.h> |
Simon Glass | 0f2af88 | 2020-05-10 11:40:05 -0600 | [diff] [blame] | 12 | #include <log.h> |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 13 | #include <ns16550.h> |
Ley Foon Tan | a176339 | 2018-06-14 18:45:22 +0800 | [diff] [blame] | 14 | #include <reset.h> |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 15 | #include <serial.h> |
Ladislav Michl | cc29442 | 2010-02-01 23:34:25 +0100 | [diff] [blame] | 16 | #include <watchdog.h> |
Simon Glass | d66c5f7 | 2020-02-03 07:36:15 -0700 | [diff] [blame] | 17 | #include <linux/err.h> |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 18 | #include <linux/types.h> |
| 19 | #include <asm/io.h> |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 20 | |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 21 | DECLARE_GLOBAL_DATA_PTR; |
| 22 | |
Detlev Zundel | 166fb54 | 2009-04-03 11:53:01 +0200 | [diff] [blame] | 23 | #define UART_LCRVAL UART_LCR_8N1 /* 8 data, 1 stop, no parity */ |
| 24 | #define UART_MCRVAL (UART_MCR_DTR | \ |
| 25 | UART_MCR_RTS) /* RTS/DTR */ |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 26 | |
Simon Glass | d945a49 | 2019-09-25 08:11:14 -0600 | [diff] [blame] | 27 | #if !CONFIG_IS_ENABLED(DM_SERIAL) |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 28 | #ifdef CONFIG_SYS_NS16550_PORT_MAPPED |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 29 | #define serial_out(x, y) outb(x, (ulong)y) |
| 30 | #define serial_in(y) inb((ulong)y) |
Dave Aldridge | a51bebc | 2011-09-01 22:47:14 +0000 | [diff] [blame] | 31 | #elif defined(CONFIG_SYS_NS16550_MEM32) && (CONFIG_SYS_NS16550_REG_SIZE > 0) |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 32 | #define serial_out(x, y) out_be32(y, x) |
| 33 | #define serial_in(y) in_be32(y) |
Dave Aldridge | a51bebc | 2011-09-01 22:47:14 +0000 | [diff] [blame] | 34 | #elif defined(CONFIG_SYS_NS16550_MEM32) && (CONFIG_SYS_NS16550_REG_SIZE < 0) |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 35 | #define serial_out(x, y) out_le32(y, x) |
| 36 | #define serial_in(y) in_le32(y) |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 37 | #else |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 38 | #define serial_out(x, y) writeb(x, y) |
| 39 | #define serial_in(y) readb(y) |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 40 | #endif |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 41 | #endif /* !CONFIG_DM_SERIAL */ |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 42 | |
Khoronzhuk, Ivan | 8090298 | 2014-07-16 00:59:25 +0300 | [diff] [blame] | 43 | #if defined(CONFIG_SOC_KEYSTONE) |
Vitaly Andrianov | 7bcf4d6 | 2014-04-04 13:16:53 -0400 | [diff] [blame] | 44 | #define UART_REG_VAL_PWREMU_MGMT_UART_DISABLE 0 |
| 45 | #define UART_REG_VAL_PWREMU_MGMT_UART_ENABLE ((1 << 14) | (1 << 13) | (1 << 0)) |
Karicheri, Muralidharan | cbc0888 | 2014-04-09 15:38:46 -0400 | [diff] [blame] | 46 | #undef UART_MCRVAL |
| 47 | #ifdef CONFIG_SERIAL_HW_FLOW_CONTROL |
| 48 | #define UART_MCRVAL (UART_MCR_RTS | UART_MCR_AFE) |
| 49 | #else |
| 50 | #define UART_MCRVAL (UART_MCR_RTS) |
| 51 | #endif |
Vitaly Andrianov | 7bcf4d6 | 2014-04-04 13:16:53 -0400 | [diff] [blame] | 52 | #endif |
| 53 | |
Prafulla Wadaskar | 6621637 | 2010-10-27 21:58:31 +0530 | [diff] [blame] | 54 | #ifndef CONFIG_SYS_NS16550_IER |
| 55 | #define CONFIG_SYS_NS16550_IER 0x00 |
| 56 | #endif /* CONFIG_SYS_NS16550_IER */ |
| 57 | |
Simon Glass | b31fb12 | 2015-02-27 22:06:26 -0700 | [diff] [blame] | 58 | static inline void serial_out_shift(void *addr, int shift, int value) |
Simon Glass | 6aba4fd | 2015-01-26 18:27:08 -0700 | [diff] [blame] | 59 | { |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 60 | #ifdef CONFIG_SYS_NS16550_PORT_MAPPED |
Simon Glass | 96e230b | 2014-10-10 07:49:13 -0600 | [diff] [blame] | 61 | outb(value, (ulong)addr); |
Bernhard Messerklinger | d8427e7 | 2018-02-15 09:02:26 +0100 | [diff] [blame] | 62 | #elif defined(CONFIG_SYS_NS16550_MEM32) && defined(CONFIG_SYS_LITTLE_ENDIAN) |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 63 | out_le32(addr, value); |
| 64 | #elif defined(CONFIG_SYS_NS16550_MEM32) && defined(CONFIG_SYS_BIG_ENDIAN) |
| 65 | out_be32(addr, value); |
Simon Glass | 0b31ec7 | 2015-05-12 14:55:02 -0600 | [diff] [blame] | 66 | #elif defined(CONFIG_SYS_NS16550_MEM32) |
| 67 | writel(value, addr); |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 68 | #elif defined(CONFIG_SYS_BIG_ENDIAN) |
Simon Glass | 6aba4fd | 2015-01-26 18:27:08 -0700 | [diff] [blame] | 69 | writeb(value, addr + (1 << shift) - 1); |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 70 | #else |
| 71 | writeb(value, addr); |
| 72 | #endif |
| 73 | } |
| 74 | |
Simon Glass | b31fb12 | 2015-02-27 22:06:26 -0700 | [diff] [blame] | 75 | static inline int serial_in_shift(void *addr, int shift) |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 76 | { |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 77 | #ifdef CONFIG_SYS_NS16550_PORT_MAPPED |
Simon Glass | 96e230b | 2014-10-10 07:49:13 -0600 | [diff] [blame] | 78 | return inb((ulong)addr); |
Bernhard Messerklinger | d8427e7 | 2018-02-15 09:02:26 +0100 | [diff] [blame] | 79 | #elif defined(CONFIG_SYS_NS16550_MEM32) && defined(CONFIG_SYS_LITTLE_ENDIAN) |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 80 | return in_le32(addr); |
| 81 | #elif defined(CONFIG_SYS_NS16550_MEM32) && defined(CONFIG_SYS_BIG_ENDIAN) |
| 82 | return in_be32(addr); |
Simon Glass | 0b31ec7 | 2015-05-12 14:55:02 -0600 | [diff] [blame] | 83 | #elif defined(CONFIG_SYS_NS16550_MEM32) |
| 84 | return readl(addr); |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 85 | #elif defined(CONFIG_SYS_BIG_ENDIAN) |
Axel Lin | b5c372d | 2015-02-28 15:55:36 +0800 | [diff] [blame] | 86 | return readb(addr + (1 << shift) - 1); |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 87 | #else |
| 88 | return readb(addr); |
| 89 | #endif |
| 90 | } |
| 91 | |
Simon Glass | d945a49 | 2019-09-25 08:11:14 -0600 | [diff] [blame] | 92 | #if CONFIG_IS_ENABLED(DM_SERIAL) |
Marek Vasut | 3e97cbb | 2016-05-25 02:13:03 +0200 | [diff] [blame] | 93 | |
| 94 | #ifndef CONFIG_SYS_NS16550_CLK |
| 95 | #define CONFIG_SYS_NS16550_CLK 0 |
| 96 | #endif |
| 97 | |
Simon Glass | f8b1a24 | 2019-12-19 17:58:18 -0700 | [diff] [blame] | 98 | /* |
| 99 | * Use this #ifdef for now since many platforms don't define in(), out(), |
| 100 | * out_le32(), etc. but we don't have #defines to indicate this. |
| 101 | * |
| 102 | * TODO(sjg@chromium.org): Add CONFIG options to indicate what I/O is available |
| 103 | * on a platform |
| 104 | */ |
| 105 | #ifdef CONFIG_NS16550_DYNAMIC |
| 106 | static void serial_out_dynamic(struct ns16550_platdata *plat, u8 *addr, |
| 107 | int value) |
| 108 | { |
| 109 | if (plat->flags & NS16550_FLAG_IO) { |
| 110 | outb(value, addr); |
| 111 | } else if (plat->reg_width == 4) { |
| 112 | if (plat->flags & NS16550_FLAG_ENDIAN) { |
| 113 | if (plat->flags & NS16550_FLAG_BE) |
| 114 | out_be32(addr, value); |
| 115 | else |
| 116 | out_le32(addr, value); |
| 117 | } else { |
| 118 | writel(value, addr); |
| 119 | } |
| 120 | } else if (plat->flags & NS16550_FLAG_BE) { |
| 121 | writeb(value, addr + (1 << plat->reg_shift) - 1); |
| 122 | } else { |
| 123 | writeb(value, addr); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | static int serial_in_dynamic(struct ns16550_platdata *plat, u8 *addr) |
| 128 | { |
| 129 | if (plat->flags & NS16550_FLAG_IO) { |
| 130 | return inb(addr); |
| 131 | } else if (plat->reg_width == 4) { |
| 132 | if (plat->flags & NS16550_FLAG_ENDIAN) { |
| 133 | if (plat->flags & NS16550_FLAG_BE) |
| 134 | return in_be32(addr); |
| 135 | else |
| 136 | return in_le32(addr); |
| 137 | } else { |
| 138 | return readl(addr); |
| 139 | } |
| 140 | } else if (plat->flags & NS16550_FLAG_BE) { |
| 141 | return readb(addr + (1 << plat->reg_shift) - 1); |
| 142 | } else { |
| 143 | return readb(addr); |
| 144 | } |
| 145 | } |
| 146 | #else |
| 147 | static inline void serial_out_dynamic(struct ns16550_platdata *plat, u8 *addr, |
| 148 | int value) |
| 149 | { |
| 150 | } |
| 151 | |
| 152 | static inline int serial_in_dynamic(struct ns16550_platdata *plat, u8 *addr) |
| 153 | { |
| 154 | return 0; |
| 155 | } |
| 156 | |
| 157 | #endif /* CONFIG_NS16550_DYNAMIC */ |
| 158 | |
Simon Glass | 6aba4fd | 2015-01-26 18:27:08 -0700 | [diff] [blame] | 159 | static void ns16550_writeb(NS16550_t port, int offset, int value) |
| 160 | { |
| 161 | struct ns16550_platdata *plat = port->plat; |
| 162 | unsigned char *addr; |
| 163 | |
| 164 | offset *= 1 << plat->reg_shift; |
Simon Glass | f8b1a24 | 2019-12-19 17:58:18 -0700 | [diff] [blame] | 165 | addr = (unsigned char *)plat->base + offset + plat->reg_offset; |
Paul Burton | c8acc89 | 2016-05-17 07:43:26 +0100 | [diff] [blame] | 166 | |
Simon Glass | f8b1a24 | 2019-12-19 17:58:18 -0700 | [diff] [blame] | 167 | if (IS_ENABLED(CONFIG_NS16550_DYNAMIC)) |
| 168 | serial_out_dynamic(plat, addr, value); |
| 169 | else |
| 170 | serial_out_shift(addr, plat->reg_shift, value); |
Simon Glass | 6aba4fd | 2015-01-26 18:27:08 -0700 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | static int ns16550_readb(NS16550_t port, int offset) |
| 174 | { |
| 175 | struct ns16550_platdata *plat = port->plat; |
| 176 | unsigned char *addr; |
| 177 | |
| 178 | offset *= 1 << plat->reg_shift; |
Simon Glass | f8b1a24 | 2019-12-19 17:58:18 -0700 | [diff] [blame] | 179 | addr = (unsigned char *)plat->base + offset + plat->reg_offset; |
Simon Glass | 6aba4fd | 2015-01-26 18:27:08 -0700 | [diff] [blame] | 180 | |
Simon Glass | f8b1a24 | 2019-12-19 17:58:18 -0700 | [diff] [blame] | 181 | if (IS_ENABLED(CONFIG_NS16550_DYNAMIC)) |
| 182 | return serial_in_dynamic(plat, addr); |
| 183 | else |
| 184 | return serial_in_shift(addr, plat->reg_shift); |
Simon Glass | 6aba4fd | 2015-01-26 18:27:08 -0700 | [diff] [blame] | 185 | } |
| 186 | |
Marek Vasut | f523c9c | 2016-12-01 02:06:29 +0100 | [diff] [blame] | 187 | static u32 ns16550_getfcr(NS16550_t port) |
| 188 | { |
| 189 | struct ns16550_platdata *plat = port->plat; |
| 190 | |
| 191 | return plat->fcr; |
| 192 | } |
| 193 | |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 194 | /* We can clean these up once everything is moved to driver model */ |
| 195 | #define serial_out(value, addr) \ |
Simon Glass | b31fb12 | 2015-02-27 22:06:26 -0700 | [diff] [blame] | 196 | ns16550_writeb(com_port, \ |
| 197 | (unsigned char *)addr - (unsigned char *)com_port, value) |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 198 | #define serial_in(addr) \ |
Simon Glass | b31fb12 | 2015-02-27 22:06:26 -0700 | [diff] [blame] | 199 | ns16550_readb(com_port, \ |
| 200 | (unsigned char *)addr - (unsigned char *)com_port) |
Marek Vasut | f523c9c | 2016-12-01 02:06:29 +0100 | [diff] [blame] | 201 | #else |
| 202 | static u32 ns16550_getfcr(NS16550_t port) |
| 203 | { |
Heiko Schocher | 06f108e | 2017-01-18 08:05:49 +0100 | [diff] [blame] | 204 | return UART_FCR_DEFVAL; |
Marek Vasut | f523c9c | 2016-12-01 02:06:29 +0100 | [diff] [blame] | 205 | } |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 206 | #endif |
| 207 | |
Marek Vasut | 3b164a5 | 2016-05-25 02:13:16 +0200 | [diff] [blame] | 208 | int ns16550_calc_divisor(NS16550_t port, int clock, int baudrate) |
Simon Glass | e98e01e | 2014-09-04 16:27:32 -0600 | [diff] [blame] | 209 | { |
| 210 | const unsigned int mode_x_div = 16; |
| 211 | |
Simon Glass | 27afb52 | 2015-01-26 18:27:09 -0700 | [diff] [blame] | 212 | return DIV_ROUND_CLOSEST(clock, mode_x_div * baudrate); |
| 213 | } |
| 214 | |
Simon Glass | c31ebfe | 2014-09-04 16:27:33 -0600 | [diff] [blame] | 215 | static void NS16550_setbrg(NS16550_t com_port, int baud_divisor) |
| 216 | { |
Simon Goldschmidt | ba2d0aa | 2018-11-02 21:28:08 +0100 | [diff] [blame] | 217 | /* to keep serial format, read lcr before writing BKSE */ |
| 218 | int lcr_val = serial_in(&com_port->lcr) & ~UART_LCR_BKSE; |
| 219 | |
| 220 | serial_out(UART_LCR_BKSE | lcr_val, &com_port->lcr); |
Simon Glass | c31ebfe | 2014-09-04 16:27:33 -0600 | [diff] [blame] | 221 | serial_out(baud_divisor & 0xff, &com_port->dll); |
| 222 | serial_out((baud_divisor >> 8) & 0xff, &com_port->dlm); |
Simon Goldschmidt | ba2d0aa | 2018-11-02 21:28:08 +0100 | [diff] [blame] | 223 | serial_out(lcr_val, &com_port->lcr); |
Simon Glass | c31ebfe | 2014-09-04 16:27:33 -0600 | [diff] [blame] | 224 | } |
| 225 | |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 226 | void NS16550_init(NS16550_t com_port, int baud_divisor) |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 227 | { |
Gregoire Gentil | 6b05d0a | 2014-11-10 11:04:10 -0800 | [diff] [blame] | 228 | #if (defined(CONFIG_SPL_BUILD) && \ |
| 229 | (defined(CONFIG_OMAP34XX) || defined(CONFIG_OMAP44XX))) |
Manfred Huber | f9b8ae3 | 2013-03-29 02:52:36 +0000 | [diff] [blame] | 230 | /* |
Gregoire Gentil | 6b05d0a | 2014-11-10 11:04:10 -0800 | [diff] [blame] | 231 | * On some OMAP3/OMAP4 devices when UART3 is configured for boot mode |
| 232 | * before SPL starts only THRE bit is set. We have to empty the |
| 233 | * transmitter before initialization starts. |
Manfred Huber | f9b8ae3 | 2013-03-29 02:52:36 +0000 | [diff] [blame] | 234 | */ |
| 235 | if ((serial_in(&com_port->lsr) & (UART_LSR_TEMT | UART_LSR_THRE)) |
| 236 | == UART_LSR_THRE) { |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 237 | if (baud_divisor != -1) |
| 238 | NS16550_setbrg(com_port, baud_divisor); |
Patrik Dahlström | 7e1bda9 | 2019-12-21 17:25:12 +0100 | [diff] [blame] | 239 | else { |
| 240 | // Re-use old baud rate divisor to flush transmit reg. |
| 241 | const int dll = serial_in(&com_port->dll); |
| 242 | const int dlm = serial_in(&com_port->dlm); |
| 243 | const int divisor = dll | (dlm << 8); |
| 244 | NS16550_setbrg(com_port, divisor); |
| 245 | } |
Manfred Huber | f9b8ae3 | 2013-03-29 02:52:36 +0000 | [diff] [blame] | 246 | serial_out(0, &com_port->mdr1); |
| 247 | } |
| 248 | #endif |
| 249 | |
Scott Wood | 6c6f061 | 2012-09-18 18:19:05 -0500 | [diff] [blame] | 250 | while (!(serial_in(&com_port->lsr) & UART_LSR_TEMT)) |
| 251 | ; |
| 252 | |
Prafulla Wadaskar | 6621637 | 2010-10-27 21:58:31 +0530 | [diff] [blame] | 253 | serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier); |
Lokesh Vutla | 42cb4b8 | 2018-08-27 15:55:24 +0530 | [diff] [blame] | 254 | #if defined(CONFIG_ARCH_OMAP2PLUS) || defined(CONFIG_OMAP_SERIAL) |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 255 | serial_out(0x7, &com_port->mdr1); /* mode select reset TL16C750*/ |
wdenk | 21136db | 2003-07-16 21:53:01 +0000 | [diff] [blame] | 256 | #endif |
Ley Foon Tan | a176339 | 2018-06-14 18:45:22 +0800 | [diff] [blame] | 257 | |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 258 | serial_out(UART_MCRVAL, &com_port->mcr); |
Marek Vasut | f523c9c | 2016-12-01 02:06:29 +0100 | [diff] [blame] | 259 | serial_out(ns16550_getfcr(com_port), &com_port->fcr); |
Simon Goldschmidt | ba2d0aa | 2018-11-02 21:28:08 +0100 | [diff] [blame] | 260 | /* initialize serial config to 8N1 before writing baudrate */ |
| 261 | serial_out(UART_LCRVAL, &com_port->lcr); |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 262 | if (baud_divisor != -1) |
| 263 | NS16550_setbrg(com_port, baud_divisor); |
Lokesh Vutla | 42cb4b8 | 2018-08-27 15:55:24 +0530 | [diff] [blame] | 264 | #if defined(CONFIG_ARCH_OMAP2PLUS) || defined(CONFIG_SOC_DA8XX) || \ |
| 265 | defined(CONFIG_OMAP_SERIAL) |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 266 | /* /16 is proper to hit 115200 with 48MHz */ |
| 267 | serial_out(0, &com_port->mdr1); |
Tom Rini | f28c434 | 2017-05-12 22:33:16 -0400 | [diff] [blame] | 268 | #endif |
Khoronzhuk, Ivan | 8090298 | 2014-07-16 00:59:25 +0300 | [diff] [blame] | 269 | #if defined(CONFIG_SOC_KEYSTONE) |
Vitaly Andrianov | 7bcf4d6 | 2014-04-04 13:16:53 -0400 | [diff] [blame] | 270 | serial_out(UART_REG_VAL_PWREMU_MGMT_UART_ENABLE, &com_port->regC); |
| 271 | #endif |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 272 | } |
| 273 | |
Ron Madrid | dfa028a | 2009-02-18 14:30:44 -0800 | [diff] [blame] | 274 | #ifndef CONFIG_NS16550_MIN_FUNCTIONS |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 275 | void NS16550_reinit(NS16550_t com_port, int baud_divisor) |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 276 | { |
Prafulla Wadaskar | 6621637 | 2010-10-27 21:58:31 +0530 | [diff] [blame] | 277 | serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier); |
Simon Glass | c31ebfe | 2014-09-04 16:27:33 -0600 | [diff] [blame] | 278 | NS16550_setbrg(com_port, 0); |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 279 | serial_out(UART_MCRVAL, &com_port->mcr); |
Marek Vasut | f523c9c | 2016-12-01 02:06:29 +0100 | [diff] [blame] | 280 | serial_out(ns16550_getfcr(com_port), &com_port->fcr); |
Simon Glass | c31ebfe | 2014-09-04 16:27:33 -0600 | [diff] [blame] | 281 | NS16550_setbrg(com_port, baud_divisor); |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 282 | } |
Ron Madrid | dfa028a | 2009-02-18 14:30:44 -0800 | [diff] [blame] | 283 | #endif /* CONFIG_NS16550_MIN_FUNCTIONS */ |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 284 | |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 285 | void NS16550_putc(NS16550_t com_port, char c) |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 286 | { |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 287 | while ((serial_in(&com_port->lsr) & UART_LSR_THRE) == 0) |
| 288 | ; |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 289 | serial_out(c, &com_port->thr); |
Stefan Roese | 57b9988 | 2010-10-12 09:39:45 +0200 | [diff] [blame] | 290 | |
| 291 | /* |
| 292 | * Call watchdog_reset() upon newline. This is done here in putc |
| 293 | * since the environment code uses a single puts() to print the complete |
| 294 | * environment upon "printenv". So we can't put this watchdog call |
| 295 | * in puts(). |
| 296 | */ |
| 297 | if (c == '\n') |
| 298 | WATCHDOG_RESET(); |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 299 | } |
| 300 | |
Ron Madrid | dfa028a | 2009-02-18 14:30:44 -0800 | [diff] [blame] | 301 | #ifndef CONFIG_NS16550_MIN_FUNCTIONS |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 302 | char NS16550_getc(NS16550_t com_port) |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 303 | { |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 304 | while ((serial_in(&com_port->lsr) & UART_LSR_DR) == 0) { |
Marek Vasut | 9e1fca9 | 2012-09-15 10:25:19 +0200 | [diff] [blame] | 305 | #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_USB_TTY) |
wdenk | 29e7f5a | 2004-03-12 00:14:09 +0000 | [diff] [blame] | 306 | extern void usbtty_poll(void); |
| 307 | usbtty_poll(); |
| 308 | #endif |
Ladislav Michl | cc29442 | 2010-02-01 23:34:25 +0100 | [diff] [blame] | 309 | WATCHDOG_RESET(); |
wdenk | 29e7f5a | 2004-03-12 00:14:09 +0000 | [diff] [blame] | 310 | } |
Graeme Russ | 14f06e6 | 2010-04-24 00:05:46 +1000 | [diff] [blame] | 311 | return serial_in(&com_port->rbr); |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 312 | } |
| 313 | |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 314 | int NS16550_tstc(NS16550_t com_port) |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 315 | { |
Simon Glass | dd5497c | 2011-10-15 19:14:09 +0000 | [diff] [blame] | 316 | return (serial_in(&com_port->lsr) & UART_LSR_DR) != 0; |
wdenk | e85390d | 2002-04-01 14:29:03 +0000 | [diff] [blame] | 317 | } |
| 318 | |
Ron Madrid | dfa028a | 2009-02-18 14:30:44 -0800 | [diff] [blame] | 319 | #endif /* CONFIG_NS16550_MIN_FUNCTIONS */ |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 320 | |
Simon Glass | 27afb52 | 2015-01-26 18:27:09 -0700 | [diff] [blame] | 321 | #ifdef CONFIG_DEBUG_UART_NS16550 |
| 322 | |
| 323 | #include <debug_uart.h> |
| 324 | |
Simon Glass | 60517d7 | 2015-10-18 19:51:23 -0600 | [diff] [blame] | 325 | static inline void _debug_uart_init(void) |
Simon Glass | 27afb52 | 2015-01-26 18:27:09 -0700 | [diff] [blame] | 326 | { |
| 327 | struct NS16550 *com_port = (struct NS16550 *)CONFIG_DEBUG_UART_BASE; |
| 328 | int baud_divisor; |
| 329 | |
| 330 | /* |
| 331 | * We copy the code from above because it is already horribly messy. |
| 332 | * Trying to refactor to nicely remove the duplication doesn't seem |
| 333 | * feasible. The better fix is to move all users of this driver to |
| 334 | * driver model. |
| 335 | */ |
Marek Vasut | 3b164a5 | 2016-05-25 02:13:16 +0200 | [diff] [blame] | 336 | baud_divisor = ns16550_calc_divisor(com_port, CONFIG_DEBUG_UART_CLOCK, |
| 337 | CONFIG_BAUDRATE); |
Simon Glass | 9246516 | 2015-06-23 15:39:06 -0600 | [diff] [blame] | 338 | serial_dout(&com_port->ier, CONFIG_SYS_NS16550_IER); |
Lokesh Vutla | 771d69c | 2017-04-22 15:57:25 +0530 | [diff] [blame] | 339 | serial_dout(&com_port->mcr, UART_MCRVAL); |
| 340 | serial_dout(&com_port->fcr, UART_FCR_DEFVAL); |
| 341 | |
| 342 | serial_dout(&com_port->lcr, UART_LCR_BKSE | UART_LCRVAL); |
| 343 | serial_dout(&com_port->dll, baud_divisor & 0xff); |
| 344 | serial_dout(&com_port->dlm, (baud_divisor >> 8) & 0xff); |
| 345 | serial_dout(&com_port->lcr, UART_LCRVAL); |
| 346 | } |
| 347 | |
Simon Goldschmidt | e03ad21 | 2019-01-09 20:35:31 +0100 | [diff] [blame] | 348 | static inline int NS16550_read_baud_divisor(struct NS16550 *com_port) |
| 349 | { |
| 350 | int ret; |
| 351 | |
| 352 | serial_dout(&com_port->lcr, UART_LCR_BKSE | UART_LCRVAL); |
| 353 | ret = serial_din(&com_port->dll) & 0xff; |
| 354 | ret |= (serial_din(&com_port->dlm) & 0xff) << 8; |
| 355 | serial_dout(&com_port->lcr, UART_LCRVAL); |
| 356 | |
| 357 | return ret; |
| 358 | } |
| 359 | |
Lokesh Vutla | 771d69c | 2017-04-22 15:57:25 +0530 | [diff] [blame] | 360 | static inline void _debug_uart_putc(int ch) |
| 361 | { |
| 362 | struct NS16550 *com_port = (struct NS16550 *)CONFIG_DEBUG_UART_BASE; |
| 363 | |
Simon Goldschmidt | e03ad21 | 2019-01-09 20:35:31 +0100 | [diff] [blame] | 364 | while (!(serial_din(&com_port->lsr) & UART_LSR_THRE)) { |
| 365 | #ifdef CONFIG_DEBUG_UART_NS16550_CHECK_ENABLED |
| 366 | if (!NS16550_read_baud_divisor(com_port)) |
| 367 | return; |
| 368 | #endif |
| 369 | } |
Lokesh Vutla | 771d69c | 2017-04-22 15:57:25 +0530 | [diff] [blame] | 370 | serial_dout(&com_port->thr, ch); |
| 371 | } |
| 372 | |
| 373 | DEBUG_UART_FUNCS |
| 374 | |
| 375 | #endif |
| 376 | |
Simon Glass | d945a49 | 2019-09-25 08:11:14 -0600 | [diff] [blame] | 377 | #if CONFIG_IS_ENABLED(DM_SERIAL) |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 378 | static int ns16550_serial_putc(struct udevice *dev, const char ch) |
| 379 | { |
| 380 | struct NS16550 *const com_port = dev_get_priv(dev); |
| 381 | |
| 382 | if (!(serial_in(&com_port->lsr) & UART_LSR_THRE)) |
| 383 | return -EAGAIN; |
| 384 | serial_out(ch, &com_port->thr); |
| 385 | |
| 386 | /* |
| 387 | * Call watchdog_reset() upon newline. This is done here in putc |
| 388 | * since the environment code uses a single puts() to print the complete |
| 389 | * environment upon "printenv". So we can't put this watchdog call |
| 390 | * in puts(). |
| 391 | */ |
| 392 | if (ch == '\n') |
| 393 | WATCHDOG_RESET(); |
| 394 | |
| 395 | return 0; |
| 396 | } |
| 397 | |
| 398 | static int ns16550_serial_pending(struct udevice *dev, bool input) |
| 399 | { |
| 400 | struct NS16550 *const com_port = dev_get_priv(dev); |
| 401 | |
| 402 | if (input) |
Mario Six | aed664a | 2018-01-15 11:09:49 +0100 | [diff] [blame] | 403 | return (serial_in(&com_port->lsr) & UART_LSR_DR) ? 1 : 0; |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 404 | else |
Mario Six | aed664a | 2018-01-15 11:09:49 +0100 | [diff] [blame] | 405 | return (serial_in(&com_port->lsr) & UART_LSR_THRE) ? 0 : 1; |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 406 | } |
| 407 | |
| 408 | static int ns16550_serial_getc(struct udevice *dev) |
| 409 | { |
Stefan Roese | 48b771c | 2017-08-16 17:37:15 +0200 | [diff] [blame] | 410 | struct NS16550 *const com_port = dev_get_priv(dev); |
| 411 | |
| 412 | if (!(serial_in(&com_port->lsr) & UART_LSR_DR)) |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 413 | return -EAGAIN; |
| 414 | |
Stefan Roese | 48b771c | 2017-08-16 17:37:15 +0200 | [diff] [blame] | 415 | return serial_in(&com_port->rbr); |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 416 | } |
| 417 | |
| 418 | static int ns16550_serial_setbrg(struct udevice *dev, int baudrate) |
| 419 | { |
| 420 | struct NS16550 *const com_port = dev_get_priv(dev); |
| 421 | struct ns16550_platdata *plat = com_port->plat; |
| 422 | int clock_divisor; |
| 423 | |
| 424 | clock_divisor = ns16550_calc_divisor(com_port, plat->clock, baudrate); |
| 425 | |
| 426 | NS16550_setbrg(com_port, clock_divisor); |
| 427 | |
Simon Goldschmidt | ba2d0aa | 2018-11-02 21:28:08 +0100 | [diff] [blame] | 428 | return 0; |
| 429 | } |
| 430 | |
| 431 | static int ns16550_serial_setconfig(struct udevice *dev, uint serial_config) |
| 432 | { |
| 433 | struct NS16550 *const com_port = dev_get_priv(dev); |
| 434 | int lcr_val = UART_LCR_WLS_8; |
| 435 | uint parity = SERIAL_GET_PARITY(serial_config); |
| 436 | uint bits = SERIAL_GET_BITS(serial_config); |
| 437 | uint stop = SERIAL_GET_STOP(serial_config); |
| 438 | |
| 439 | /* |
| 440 | * only parity config is implemented, check if other serial settings |
| 441 | * are the default one. |
| 442 | */ |
| 443 | if (bits != SERIAL_8_BITS || stop != SERIAL_ONE_STOP) |
| 444 | return -ENOTSUPP; /* not supported in driver*/ |
| 445 | |
| 446 | switch (parity) { |
| 447 | case SERIAL_PAR_NONE: |
| 448 | /* no bits to add */ |
| 449 | break; |
| 450 | case SERIAL_PAR_ODD: |
| 451 | lcr_val |= UART_LCR_PEN; |
| 452 | break; |
| 453 | case SERIAL_PAR_EVEN: |
| 454 | lcr_val |= UART_LCR_PEN | UART_LCR_EPS; |
| 455 | break; |
| 456 | default: |
| 457 | return -ENOTSUPP; /* not supported in driver*/ |
| 458 | } |
| 459 | |
| 460 | serial_out(lcr_val, &com_port->lcr); |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 461 | return 0; |
| 462 | } |
| 463 | |
Andy Shevchenko | d778fc4 | 2018-11-20 23:52:36 +0200 | [diff] [blame] | 464 | static int ns16550_serial_getinfo(struct udevice *dev, |
| 465 | struct serial_device_info *info) |
| 466 | { |
| 467 | struct NS16550 *const com_port = dev_get_priv(dev); |
| 468 | struct ns16550_platdata *plat = com_port->plat; |
| 469 | |
| 470 | info->type = SERIAL_CHIP_16550_COMPATIBLE; |
| 471 | #ifdef CONFIG_SYS_NS16550_PORT_MAPPED |
| 472 | info->addr_space = SERIAL_ADDRESS_SPACE_IO; |
| 473 | #else |
| 474 | info->addr_space = SERIAL_ADDRESS_SPACE_MEMORY; |
| 475 | #endif |
| 476 | info->addr = plat->base; |
| 477 | info->reg_width = plat->reg_width; |
| 478 | info->reg_shift = plat->reg_shift; |
| 479 | info->reg_offset = plat->reg_offset; |
Andy Shevchenko | ee2c922 | 2020-02-27 17:21:55 +0200 | [diff] [blame] | 480 | info->clock = plat->clock; |
| 481 | |
Andy Shevchenko | d778fc4 | 2018-11-20 23:52:36 +0200 | [diff] [blame] | 482 | return 0; |
| 483 | } |
| 484 | |
Bin Meng | e92e09d | 2020-04-03 18:35:32 -0700 | [diff] [blame] | 485 | static int ns16550_serial_assign_base(struct ns16550_platdata *plat, ulong base) |
Wolfgang Wallner | f89c7ec | 2020-03-02 14:41:14 +0100 | [diff] [blame] | 486 | { |
Bin Meng | e92e09d | 2020-04-03 18:35:32 -0700 | [diff] [blame] | 487 | if (base == FDT_ADDR_T_NONE) |
Wolfgang Wallner | f89c7ec | 2020-03-02 14:41:14 +0100 | [diff] [blame] | 488 | return -EINVAL; |
| 489 | |
| 490 | #ifdef CONFIG_SYS_NS16550_PORT_MAPPED |
Bin Meng | e92e09d | 2020-04-03 18:35:32 -0700 | [diff] [blame] | 491 | plat->base = base; |
Wolfgang Wallner | f89c7ec | 2020-03-02 14:41:14 +0100 | [diff] [blame] | 492 | #else |
Bin Meng | e92e09d | 2020-04-03 18:35:32 -0700 | [diff] [blame] | 493 | plat->base = (unsigned long)map_physmem(base, 0, MAP_NOCACHE); |
Wolfgang Wallner | f89c7ec | 2020-03-02 14:41:14 +0100 | [diff] [blame] | 494 | #endif |
| 495 | |
| 496 | return 0; |
| 497 | } |
Wolfgang Wallner | f89c7ec | 2020-03-02 14:41:14 +0100 | [diff] [blame] | 498 | |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 499 | int ns16550_serial_probe(struct udevice *dev) |
| 500 | { |
Bin Meng | e92e09d | 2020-04-03 18:35:32 -0700 | [diff] [blame] | 501 | struct ns16550_platdata *plat = dev->platdata; |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 502 | struct NS16550 *const com_port = dev_get_priv(dev); |
Ley Foon Tan | a176339 | 2018-06-14 18:45:22 +0800 | [diff] [blame] | 503 | struct reset_ctl_bulk reset_bulk; |
Bin Meng | e92e09d | 2020-04-03 18:35:32 -0700 | [diff] [blame] | 504 | fdt_addr_t addr; |
Ley Foon Tan | a176339 | 2018-06-14 18:45:22 +0800 | [diff] [blame] | 505 | int ret; |
| 506 | |
Bin Meng | e92e09d | 2020-04-03 18:35:32 -0700 | [diff] [blame] | 507 | /* |
| 508 | * If we are on PCI bus, either directly attached to a PCI root port, |
| 509 | * or via a PCI bridge, assign platdata->base before probing hardware. |
| 510 | */ |
| 511 | if (device_is_on_pci_bus(dev)) { |
| 512 | addr = devfdt_get_addr_pci(dev); |
| 513 | ret = ns16550_serial_assign_base(plat, addr); |
| 514 | if (ret) |
| 515 | return ret; |
| 516 | } |
Wolfgang Wallner | f89c7ec | 2020-03-02 14:41:14 +0100 | [diff] [blame] | 517 | |
Ley Foon Tan | a176339 | 2018-06-14 18:45:22 +0800 | [diff] [blame] | 518 | ret = reset_get_bulk(dev, &reset_bulk); |
| 519 | if (!ret) |
| 520 | reset_deassert_bulk(&reset_bulk); |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 521 | |
Simon Glass | 3bf04f3 | 2014-10-22 21:37:05 -0600 | [diff] [blame] | 522 | com_port->plat = dev_get_platdata(dev); |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 523 | NS16550_init(com_port, -1); |
| 524 | |
| 525 | return 0; |
| 526 | } |
| 527 | |
Marek Vasut | 1a59eec | 2016-12-01 02:06:30 +0100 | [diff] [blame] | 528 | #if CONFIG_IS_ENABLED(OF_CONTROL) |
| 529 | enum { |
| 530 | PORT_NS16550 = 0, |
Marek Vasut | 92a744f | 2016-12-01 02:06:31 +0100 | [diff] [blame] | 531 | PORT_JZ4780, |
Marek Vasut | 1a59eec | 2016-12-01 02:06:30 +0100 | [diff] [blame] | 532 | }; |
| 533 | #endif |
| 534 | |
Simon Glass | 18798be | 2016-07-04 11:58:23 -0600 | [diff] [blame] | 535 | #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 536 | int ns16550_serial_ofdata_to_platdata(struct udevice *dev) |
| 537 | { |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 538 | struct ns16550_platdata *plat = dev->platdata; |
Marek Vasut | 92a744f | 2016-12-01 02:06:31 +0100 | [diff] [blame] | 539 | const u32 port_type = dev_get_driver_data(dev); |
Bin Meng | e92e09d | 2020-04-03 18:35:32 -0700 | [diff] [blame] | 540 | fdt_addr_t addr; |
Masahiro Yamada | 09abe2b | 2016-09-26 20:45:27 +0900 | [diff] [blame] | 541 | struct clk clk; |
| 542 | int err; |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 543 | |
Bin Meng | e92e09d | 2020-04-03 18:35:32 -0700 | [diff] [blame] | 544 | addr = dev_read_addr(dev); |
| 545 | err = ns16550_serial_assign_base(plat, addr); |
| 546 | if (err && !device_is_on_pci_bus(dev)) |
| 547 | return err; |
| 548 | |
Philipp Tomsich | e74958e | 2017-06-07 18:46:02 +0200 | [diff] [blame] | 549 | plat->reg_offset = dev_read_u32_default(dev, "reg-offset", 0); |
| 550 | plat->reg_shift = dev_read_u32_default(dev, "reg-shift", 0); |
Andy Shevchenko | 72fccfe | 2018-11-20 23:52:35 +0200 | [diff] [blame] | 551 | plat->reg_width = dev_read_u32_default(dev, "reg-io-width", 1); |
Paul Burton | 8aadc56 | 2016-09-08 07:47:29 +0100 | [diff] [blame] | 552 | |
| 553 | err = clk_get_by_index(dev, 0, &clk); |
| 554 | if (!err) { |
| 555 | err = clk_get_rate(&clk); |
| 556 | if (!IS_ERR_VALUE(err)) |
| 557 | plat->clock = err; |
Alexandre Courbot | eaa24e7f | 2016-09-30 17:37:00 +0900 | [diff] [blame] | 558 | } else if (err != -ENOENT && err != -ENODEV && err != -ENOSYS) { |
Paul Burton | 8aadc56 | 2016-09-08 07:47:29 +0100 | [diff] [blame] | 559 | debug("ns16550 failed to get clock\n"); |
| 560 | return err; |
| 561 | } |
| 562 | |
| 563 | if (!plat->clock) |
Philipp Tomsich | e74958e | 2017-06-07 18:46:02 +0200 | [diff] [blame] | 564 | plat->clock = dev_read_u32_default(dev, "clock-frequency", |
| 565 | CONFIG_SYS_NS16550_CLK); |
Thomas Chou | 16b2e7e | 2015-11-19 21:48:05 +0800 | [diff] [blame] | 566 | if (!plat->clock) { |
| 567 | debug("ns16550 clock not defined\n"); |
| 568 | return -EINVAL; |
| 569 | } |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 570 | |
Heiko Schocher | 06f108e | 2017-01-18 08:05:49 +0100 | [diff] [blame] | 571 | plat->fcr = UART_FCR_DEFVAL; |
Marek Vasut | 92a744f | 2016-12-01 02:06:31 +0100 | [diff] [blame] | 572 | if (port_type == PORT_JZ4780) |
| 573 | plat->fcr |= UART_FCR_UME; |
Marek Vasut | f523c9c | 2016-12-01 02:06:29 +0100 | [diff] [blame] | 574 | |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 575 | return 0; |
| 576 | } |
Simon Glass | 3bf04f3 | 2014-10-22 21:37:05 -0600 | [diff] [blame] | 577 | #endif |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 578 | |
| 579 | const struct dm_serial_ops ns16550_serial_ops = { |
| 580 | .putc = ns16550_serial_putc, |
| 581 | .pending = ns16550_serial_pending, |
| 582 | .getc = ns16550_serial_getc, |
| 583 | .setbrg = ns16550_serial_setbrg, |
Andy Shevchenko | d778fc4 | 2018-11-20 23:52:36 +0200 | [diff] [blame] | 584 | .setconfig = ns16550_serial_setconfig, |
| 585 | .getinfo = ns16550_serial_getinfo, |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 586 | }; |
Thomas Chou | 16b2e7e | 2015-11-19 21:48:05 +0800 | [diff] [blame] | 587 | |
Alexandru Gagniuc | b1ab189 | 2017-03-27 12:54:19 -0700 | [diff] [blame] | 588 | #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) |
Thomas Chou | dad5367 | 2015-12-14 20:45:09 +0800 | [diff] [blame] | 589 | /* |
| 590 | * Please consider existing compatible strings before adding a new |
| 591 | * one to keep this table compact. Or you may add a generic "ns16550" |
| 592 | * compatible string to your dts. |
| 593 | */ |
Thomas Chou | 16b2e7e | 2015-11-19 21:48:05 +0800 | [diff] [blame] | 594 | static const struct udevice_id ns16550_serial_ids[] = { |
Marek Vasut | 1a59eec | 2016-12-01 02:06:30 +0100 | [diff] [blame] | 595 | { .compatible = "ns16550", .data = PORT_NS16550 }, |
| 596 | { .compatible = "ns16550a", .data = PORT_NS16550 }, |
Marek Vasut | 92a744f | 2016-12-01 02:06:31 +0100 | [diff] [blame] | 597 | { .compatible = "ingenic,jz4780-uart", .data = PORT_JZ4780 }, |
Marek Vasut | 1a59eec | 2016-12-01 02:06:30 +0100 | [diff] [blame] | 598 | { .compatible = "nvidia,tegra20-uart", .data = PORT_NS16550 }, |
| 599 | { .compatible = "snps,dw-apb-uart", .data = PORT_NS16550 }, |
Thomas Chou | 16b2e7e | 2015-11-19 21:48:05 +0800 | [diff] [blame] | 600 | {} |
| 601 | }; |
Alexandru Gagniuc | b1ab189 | 2017-03-27 12:54:19 -0700 | [diff] [blame] | 602 | #endif /* OF_CONTROL && !OF_PLATDATA */ |
Thomas Chou | 16b2e7e | 2015-11-19 21:48:05 +0800 | [diff] [blame] | 603 | |
Simon Glass | 9ebf348 | 2015-12-13 21:36:59 -0700 | [diff] [blame] | 604 | #if CONFIG_IS_ENABLED(SERIAL_PRESENT) |
Alexandru Gagniuc | b1ab189 | 2017-03-27 12:54:19 -0700 | [diff] [blame] | 605 | |
| 606 | /* TODO(sjg@chromium.org): Integrate this into a macro like CONFIG_IS_ENABLED */ |
| 607 | #if !defined(CONFIG_TPL_BUILD) || defined(CONFIG_TPL_DM_SERIAL) |
Thomas Chou | 16b2e7e | 2015-11-19 21:48:05 +0800 | [diff] [blame] | 608 | U_BOOT_DRIVER(ns16550_serial) = { |
| 609 | .name = "ns16550_serial", |
| 610 | .id = UCLASS_SERIAL, |
Alexandru Gagniuc | b1ab189 | 2017-03-27 12:54:19 -0700 | [diff] [blame] | 611 | #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) |
Thomas Chou | 16b2e7e | 2015-11-19 21:48:05 +0800 | [diff] [blame] | 612 | .of_match = ns16550_serial_ids, |
| 613 | .ofdata_to_platdata = ns16550_serial_ofdata_to_platdata, |
| 614 | .platdata_auto_alloc_size = sizeof(struct ns16550_platdata), |
| 615 | #endif |
| 616 | .priv_auto_alloc_size = sizeof(struct NS16550), |
| 617 | .probe = ns16550_serial_probe, |
| 618 | .ops = &ns16550_serial_ops, |
Bin Meng | bdb33d8 | 2018-10-24 06:36:36 -0700 | [diff] [blame] | 619 | #if !CONFIG_IS_ENABLED(OF_CONTROL) |
Simon Glass | 6ef533e | 2015-12-04 08:58:38 -0700 | [diff] [blame] | 620 | .flags = DM_FLAG_PRE_RELOC, |
Bin Meng | bdb33d8 | 2018-10-24 06:36:36 -0700 | [diff] [blame] | 621 | #endif |
Thomas Chou | 16b2e7e | 2015-11-19 21:48:05 +0800 | [diff] [blame] | 622 | }; |
Simon Glass | 9ebf348 | 2015-12-13 21:36:59 -0700 | [diff] [blame] | 623 | #endif |
Alexandru Gagniuc | b1ab189 | 2017-03-27 12:54:19 -0700 | [diff] [blame] | 624 | #endif /* SERIAL_PRESENT */ |
| 625 | |
Simon Glass | 79a9da3 | 2014-09-04 16:27:34 -0600 | [diff] [blame] | 626 | #endif /* CONFIG_DM_SERIAL */ |