diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-11-21 07:46:31 -0500 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-02-12 12:32:42 -0500 |
commit | 4be53dbe74818a12cc737a89b5d0aec6095956e0 (patch) | |
tree | 35b7f80ce81c7f8c42f324c982d880a2c717457e /drivers | |
parent | 81d6724a564fa5bd20b006eae0da4462d599bb92 (diff) |
ARM: PNX4008: i2c-pnx: don't split messages across several lines
It makes them harder to grep for.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/i2c/busses/i2c-pnx.c | 81 |
1 files changed, 44 insertions, 37 deletions
diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c index 181e69211e4f..afc9c968deec 100644 --- a/drivers/i2c/busses/i2c-pnx.c +++ b/drivers/i2c/busses/i2c-pnx.c | |||
@@ -86,25 +86,26 @@ static int i2c_pnx_start(unsigned char slave_addr, | |||
86 | 86 | ||
87 | /* Check for 7 bit slave addresses only */ | 87 | /* Check for 7 bit slave addresses only */ |
88 | if (slave_addr & ~0x7f) { | 88 | if (slave_addr & ~0x7f) { |
89 | dev_err(&alg_data->adapter.dev, "%s: Invalid slave address %x. " | 89 | dev_err(&alg_data->adapter.dev, |
90 | "Only 7-bit addresses are supported\n", | 90 | "%s: Invalid slave address %x. Only 7-bit addresses are supported\n", |
91 | alg_data->adapter.name, slave_addr); | 91 | alg_data->adapter.name, slave_addr); |
92 | return -EINVAL; | 92 | return -EINVAL; |
93 | } | 93 | } |
94 | 94 | ||
95 | /* First, make sure bus is idle */ | 95 | /* First, make sure bus is idle */ |
96 | if (wait_timeout(I2C_PNX_TIMEOUT, alg_data)) { | 96 | if (wait_timeout(I2C_PNX_TIMEOUT, alg_data)) { |
97 | /* Somebody else is monopolizing the bus */ | 97 | /* Somebody else is monopolizing the bus */ |
98 | dev_err(&alg_data->adapter.dev, "%s: Bus busy. Slave addr = %02x, " | 98 | dev_err(&alg_data->adapter.dev, |
99 | "cntrl = %x, stat = %x\n", | 99 | "%s: Bus busy. Slave addr = %02x, cntrl = %x, stat = %x\n", |
100 | alg_data->adapter.name, slave_addr, | 100 | alg_data->adapter.name, slave_addr, |
101 | ioread32(I2C_REG_CTL(alg_data)), | 101 | ioread32(I2C_REG_CTL(alg_data)), |
102 | ioread32(I2C_REG_STS(alg_data))); | 102 | ioread32(I2C_REG_STS(alg_data))); |
103 | return -EBUSY; | 103 | return -EBUSY; |
104 | } else if (ioread32(I2C_REG_STS(alg_data)) & mstatus_afi) { | 104 | } else if (ioread32(I2C_REG_STS(alg_data)) & mstatus_afi) { |
105 | /* Sorry, we lost the bus */ | 105 | /* Sorry, we lost the bus */ |
106 | dev_err(&alg_data->adapter.dev, "%s: Arbitration failure. " | 106 | dev_err(&alg_data->adapter.dev, |
107 | "Slave addr = %02x\n", alg_data->adapter.name, slave_addr); | 107 | "%s: Arbitration failure. Slave addr = %02x\n", |
108 | alg_data->adapter.name, slave_addr); | ||
108 | return -EIO; | 109 | return -EIO; |
109 | } | 110 | } |
110 | 111 | ||
@@ -182,15 +183,15 @@ static int i2c_pnx_master_xmit(struct i2c_pnx_algo_data *alg_data) | |||
182 | alg_data->mif.len--; | 183 | alg_data->mif.len--; |
183 | iowrite32(val, I2C_REG_TX(alg_data)); | 184 | iowrite32(val, I2C_REG_TX(alg_data)); |
184 | 185 | ||
185 | dev_dbg(&alg_data->adapter.dev, "%s(): xmit %#x [%d]\n", __func__, | 186 | dev_dbg(&alg_data->adapter.dev, "%s(): xmit %#x [%d]\n", |
186 | val, alg_data->mif.len + 1); | 187 | __func__, val, alg_data->mif.len + 1); |
187 | 188 | ||
188 | if (alg_data->mif.len == 0) { | 189 | if (alg_data->mif.len == 0) { |
189 | if (alg_data->last) { | 190 | if (alg_data->last) { |
190 | /* Wait until the STOP is seen. */ | 191 | /* Wait until the STOP is seen. */ |
191 | if (wait_timeout(I2C_PNX_TIMEOUT, alg_data)) | 192 | if (wait_timeout(I2C_PNX_TIMEOUT, alg_data)) |
192 | dev_err(&alg_data->adapter.dev, "The bus is still " | 193 | dev_err(&alg_data->adapter.dev, |
193 | "active after timeout\n"); | 194 | "The bus is still active after timeout\n"); |
194 | } | 195 | } |
195 | /* Disable master interrupts */ | 196 | /* Disable master interrupts */ |
196 | iowrite32(ioread32(I2C_REG_CTL(alg_data)) & | 197 | iowrite32(ioread32(I2C_REG_CTL(alg_data)) & |
@@ -199,7 +200,8 @@ static int i2c_pnx_master_xmit(struct i2c_pnx_algo_data *alg_data) | |||
199 | 200 | ||
200 | del_timer_sync(&alg_data->mif.timer); | 201 | del_timer_sync(&alg_data->mif.timer); |
201 | 202 | ||
202 | dev_dbg(&alg_data->adapter.dev, "%s(): Waking up xfer routine.\n", | 203 | dev_dbg(&alg_data->adapter.dev, |
204 | "%s(): Waking up xfer routine.\n", | ||
203 | __func__); | 205 | __func__); |
204 | 206 | ||
205 | complete(&alg_data->mif.complete); | 207 | complete(&alg_data->mif.complete); |
@@ -215,8 +217,9 @@ static int i2c_pnx_master_xmit(struct i2c_pnx_algo_data *alg_data) | |||
215 | 217 | ||
216 | /* Stop timer. */ | 218 | /* Stop timer. */ |
217 | del_timer_sync(&alg_data->mif.timer); | 219 | del_timer_sync(&alg_data->mif.timer); |
218 | dev_dbg(&alg_data->adapter.dev, "%s(): Waking up xfer routine after " | 220 | dev_dbg(&alg_data->adapter.dev, |
219 | "zero-xfer.\n", __func__); | 221 | "%s(): Waking up xfer routine after zero-xfer.\n", |
222 | __func__); | ||
220 | 223 | ||
221 | complete(&alg_data->mif.complete); | 224 | complete(&alg_data->mif.complete); |
222 | } | 225 | } |
@@ -245,8 +248,9 @@ static int i2c_pnx_master_rcv(struct i2c_pnx_algo_data *alg_data) | |||
245 | * or we didn't 'ask' for it yet. | 248 | * or we didn't 'ask' for it yet. |
246 | */ | 249 | */ |
247 | if (ioread32(I2C_REG_STS(alg_data)) & mstatus_rfe) { | 250 | if (ioread32(I2C_REG_STS(alg_data)) & mstatus_rfe) { |
248 | dev_dbg(&alg_data->adapter.dev, "%s(): Write dummy data to fill " | 251 | dev_dbg(&alg_data->adapter.dev, |
249 | "Rx-fifo...\n", __func__); | 252 | "%s(): Write dummy data to fill Rx-fifo...\n", |
253 | __func__); | ||
250 | 254 | ||
251 | if (alg_data->mif.len == 1) { | 255 | if (alg_data->mif.len == 1) { |
252 | /* Last byte, do not acknowledge next rcv. */ | 256 | /* Last byte, do not acknowledge next rcv. */ |
@@ -278,16 +282,16 @@ static int i2c_pnx_master_rcv(struct i2c_pnx_algo_data *alg_data) | |||
278 | if (alg_data->mif.len > 0) { | 282 | if (alg_data->mif.len > 0) { |
279 | val = ioread32(I2C_REG_RX(alg_data)); | 283 | val = ioread32(I2C_REG_RX(alg_data)); |
280 | *alg_data->mif.buf++ = (u8) (val & 0xff); | 284 | *alg_data->mif.buf++ = (u8) (val & 0xff); |
281 | dev_dbg(&alg_data->adapter.dev, "%s(): rcv 0x%x [%d]\n", __func__, val, | 285 | dev_dbg(&alg_data->adapter.dev, "%s(): rcv 0x%x [%d]\n", |
282 | alg_data->mif.len); | 286 | __func__, val, alg_data->mif.len); |
283 | 287 | ||
284 | alg_data->mif.len--; | 288 | alg_data->mif.len--; |
285 | if (alg_data->mif.len == 0) { | 289 | if (alg_data->mif.len == 0) { |
286 | if (alg_data->last) | 290 | if (alg_data->last) |
287 | /* Wait until the STOP is seen. */ | 291 | /* Wait until the STOP is seen. */ |
288 | if (wait_timeout(I2C_PNX_TIMEOUT, alg_data)) | 292 | if (wait_timeout(I2C_PNX_TIMEOUT, alg_data)) |
289 | dev_err(&alg_data->adapter.dev, "The bus is still " | 293 | dev_err(&alg_data->adapter.dev, |
290 | "active after timeout\n"); | 294 | "The bus is still active after timeout\n"); |
291 | 295 | ||
292 | /* Disable master interrupts */ | 296 | /* Disable master interrupts */ |
293 | ctl = ioread32(I2C_REG_CTL(alg_data)); | 297 | ctl = ioread32(I2C_REG_CTL(alg_data)); |
@@ -312,7 +316,8 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id) | |||
312 | struct i2c_pnx_algo_data *alg_data = dev_id; | 316 | struct i2c_pnx_algo_data *alg_data = dev_id; |
313 | u32 stat, ctl; | 317 | u32 stat, ctl; |
314 | 318 | ||
315 | dev_dbg(&alg_data->adapter.dev, "%s(): mstat = %x mctrl = %x, mode = %d\n", | 319 | dev_dbg(&alg_data->adapter.dev, |
320 | "%s(): mstat = %x mctrl = %x, mode = %d\n", | ||
316 | __func__, | 321 | __func__, |
317 | ioread32(I2C_REG_STS(alg_data)), | 322 | ioread32(I2C_REG_STS(alg_data)), |
318 | ioread32(I2C_REG_CTL(alg_data)), | 323 | ioread32(I2C_REG_CTL(alg_data)), |
@@ -335,8 +340,8 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id) | |||
335 | complete(&alg_data->mif.complete); | 340 | complete(&alg_data->mif.complete); |
336 | } else if (stat & mstatus_nai) { | 341 | } else if (stat & mstatus_nai) { |
337 | /* Slave did not acknowledge, generate a STOP */ | 342 | /* Slave did not acknowledge, generate a STOP */ |
338 | dev_dbg(&alg_data->adapter.dev, "%s(): " | 343 | dev_dbg(&alg_data->adapter.dev, |
339 | "Slave did not acknowledge, generating a STOP.\n", | 344 | "%s(): Slave did not acknowledge, generating a STOP.\n", |
340 | __func__); | 345 | __func__); |
341 | i2c_pnx_stop(alg_data); | 346 | i2c_pnx_stop(alg_data); |
342 | 347 | ||
@@ -375,7 +380,8 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id) | |||
375 | stat = ioread32(I2C_REG_STS(alg_data)); | 380 | stat = ioread32(I2C_REG_STS(alg_data)); |
376 | iowrite32(stat | mstatus_tdi | mstatus_afi, I2C_REG_STS(alg_data)); | 381 | iowrite32(stat | mstatus_tdi | mstatus_afi, I2C_REG_STS(alg_data)); |
377 | 382 | ||
378 | dev_dbg(&alg_data->adapter.dev, "%s(): exiting, stat = %x ctrl = %x.\n", | 383 | dev_dbg(&alg_data->adapter.dev, |
384 | "%s(): exiting, stat = %x ctrl = %x.\n", | ||
379 | __func__, ioread32(I2C_REG_STS(alg_data)), | 385 | __func__, ioread32(I2C_REG_STS(alg_data)), |
380 | ioread32(I2C_REG_CTL(alg_data))); | 386 | ioread32(I2C_REG_CTL(alg_data))); |
381 | 387 | ||
@@ -387,10 +393,10 @@ static void i2c_pnx_timeout(unsigned long data) | |||
387 | struct i2c_pnx_algo_data *alg_data = (struct i2c_pnx_algo_data *)data; | 393 | struct i2c_pnx_algo_data *alg_data = (struct i2c_pnx_algo_data *)data; |
388 | u32 ctl; | 394 | u32 ctl; |
389 | 395 | ||
390 | dev_err(&alg_data->adapter.dev, "Master timed out. stat = %04x, cntrl = %04x. " | 396 | dev_err(&alg_data->adapter.dev, |
391 | "Resetting master...\n", | 397 | "Master timed out. stat = %04x, cntrl = %04x. Resetting master...\n", |
392 | ioread32(I2C_REG_STS(alg_data)), | 398 | ioread32(I2C_REG_STS(alg_data)), |
393 | ioread32(I2C_REG_CTL(alg_data))); | 399 | ioread32(I2C_REG_CTL(alg_data))); |
394 | 400 | ||
395 | /* Reset master and disable interrupts */ | 401 | /* Reset master and disable interrupts */ |
396 | ctl = ioread32(I2C_REG_CTL(alg_data)); | 402 | ctl = ioread32(I2C_REG_CTL(alg_data)); |
@@ -411,7 +417,7 @@ static inline void bus_reset_if_active(struct i2c_pnx_algo_data *alg_data) | |||
411 | if ((stat = ioread32(I2C_REG_STS(alg_data))) & mstatus_active) { | 417 | if ((stat = ioread32(I2C_REG_STS(alg_data))) & mstatus_active) { |
412 | dev_err(&alg_data->adapter.dev, | 418 | dev_err(&alg_data->adapter.dev, |
413 | "%s: Bus is still active after xfer. Reset it...\n", | 419 | "%s: Bus is still active after xfer. Reset it...\n", |
414 | alg_data->adapter.name); | 420 | alg_data->adapter.name); |
415 | iowrite32(ioread32(I2C_REG_CTL(alg_data)) | mcntrl_reset, | 421 | iowrite32(ioread32(I2C_REG_CTL(alg_data)) | mcntrl_reset, |
416 | I2C_REG_CTL(alg_data)); | 422 | I2C_REG_CTL(alg_data)); |
417 | wait_reset(I2C_PNX_TIMEOUT, alg_data); | 423 | wait_reset(I2C_PNX_TIMEOUT, alg_data); |
@@ -445,7 +451,8 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) | |||
445 | struct i2c_pnx_algo_data *alg_data = adap->algo_data; | 451 | struct i2c_pnx_algo_data *alg_data = adap->algo_data; |
446 | u32 stat = ioread32(I2C_REG_STS(alg_data)); | 452 | u32 stat = ioread32(I2C_REG_STS(alg_data)); |
447 | 453 | ||
448 | dev_dbg(&alg_data->adapter.dev, "%s(): entering: %d messages, stat = %04x.\n", | 454 | dev_dbg(&alg_data->adapter.dev, |
455 | "%s(): entering: %d messages, stat = %04x.\n", | ||
449 | __func__, num, ioread32(I2C_REG_STS(alg_data))); | 456 | __func__, num, ioread32(I2C_REG_STS(alg_data))); |
450 | 457 | ||
451 | bus_reset_if_active(alg_data); | 458 | bus_reset_if_active(alg_data); |
@@ -472,9 +479,8 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) | |||
472 | alg_data->mif.ret = 0; | 479 | alg_data->mif.ret = 0; |
473 | alg_data->last = (i == num - 1); | 480 | alg_data->last = (i == num - 1); |
474 | 481 | ||
475 | dev_dbg(&alg_data->adapter.dev, "%s(): mode %d, %d bytes\n", __func__, | 482 | dev_dbg(&alg_data->adapter.dev, "%s(): mode %d, %d bytes\n", |
476 | alg_data->mif.mode, | 483 | __func__, alg_data->mif.mode, alg_data->mif.len); |
477 | alg_data->mif.len); | ||
478 | 484 | ||
479 | i2c_pnx_arm_timer(alg_data); | 485 | i2c_pnx_arm_timer(alg_data); |
480 | 486 | ||
@@ -496,7 +502,8 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) | |||
496 | 502 | ||
497 | if (!(rc = alg_data->mif.ret)) | 503 | if (!(rc = alg_data->mif.ret)) |
498 | completed++; | 504 | completed++; |
499 | dev_dbg(&alg_data->adapter.dev, "%s(): Complete, return code = %d.\n", | 505 | dev_dbg(&alg_data->adapter.dev, |
506 | "%s(): Complete, return code = %d.\n", | ||
500 | __func__, rc); | 507 | __func__, rc); |
501 | 508 | ||
502 | /* Clear TDI and AFI bits in case they are set. */ | 509 | /* Clear TDI and AFI bits in case they are set. */ |