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path: root/drivers/i2c/busses/i2c-pnx.c
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Diffstat (limited to 'drivers/i2c/busses/i2c-pnx.c')
-rw-r--r--drivers/i2c/busses/i2c-pnx.c45
1 files changed, 23 insertions, 22 deletions
diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c
index f8d0dff0de7e..1ca21084ffcf 100644
--- a/drivers/i2c/busses/i2c-pnx.c
+++ b/drivers/i2c/busses/i2c-pnx.c
@@ -76,7 +76,7 @@ static int i2c_pnx_start(unsigned char slave_addr, struct i2c_adapter *adap)
76{ 76{
77 struct i2c_pnx_algo_data *alg_data = adap->algo_data; 77 struct i2c_pnx_algo_data *alg_data = adap->algo_data;
78 78
79 dev_dbg(&adap->dev, "%s(): addr 0x%x mode %d\n", __FUNCTION__, 79 dev_dbg(&adap->dev, "%s(): addr 0x%x mode %d\n", __func__,
80 slave_addr, alg_data->mif.mode); 80 slave_addr, alg_data->mif.mode);
81 81
82 /* Check for 7 bit slave addresses only */ 82 /* Check for 7 bit slave addresses only */
@@ -110,14 +110,14 @@ static int i2c_pnx_start(unsigned char slave_addr, struct i2c_adapter *adap)
110 iowrite32(ioread32(I2C_REG_STS(alg_data)) | mstatus_tdi | mstatus_afi, 110 iowrite32(ioread32(I2C_REG_STS(alg_data)) | mstatus_tdi | mstatus_afi,
111 I2C_REG_STS(alg_data)); 111 I2C_REG_STS(alg_data));
112 112
113 dev_dbg(&adap->dev, "%s(): sending %#x\n", __FUNCTION__, 113 dev_dbg(&adap->dev, "%s(): sending %#x\n", __func__,
114 (slave_addr << 1) | start_bit | alg_data->mif.mode); 114 (slave_addr << 1) | start_bit | alg_data->mif.mode);
115 115
116 /* Write the slave address, START bit and R/W bit */ 116 /* Write the slave address, START bit and R/W bit */
117 iowrite32((slave_addr << 1) | start_bit | alg_data->mif.mode, 117 iowrite32((slave_addr << 1) | start_bit | alg_data->mif.mode,
118 I2C_REG_TX(alg_data)); 118 I2C_REG_TX(alg_data));
119 119
120 dev_dbg(&adap->dev, "%s(): exit\n", __FUNCTION__); 120 dev_dbg(&adap->dev, "%s(): exit\n", __func__);
121 121
122 return 0; 122 return 0;
123} 123}
@@ -135,7 +135,7 @@ static void i2c_pnx_stop(struct i2c_adapter *adap)
135 long timeout = 1000; 135 long timeout = 1000;
136 136
137 dev_dbg(&adap->dev, "%s(): entering: stat = %04x.\n", 137 dev_dbg(&adap->dev, "%s(): entering: stat = %04x.\n",
138 __FUNCTION__, ioread32(I2C_REG_STS(alg_data))); 138 __func__, ioread32(I2C_REG_STS(alg_data)));
139 139
140 /* Write a STOP bit to TX FIFO */ 140 /* Write a STOP bit to TX FIFO */
141 iowrite32(0xff | stop_bit, I2C_REG_TX(alg_data)); 141 iowrite32(0xff | stop_bit, I2C_REG_TX(alg_data));
@@ -149,7 +149,7 @@ static void i2c_pnx_stop(struct i2c_adapter *adap)
149 } 149 }
150 150
151 dev_dbg(&adap->dev, "%s(): exiting: stat = %04x.\n", 151 dev_dbg(&adap->dev, "%s(): exiting: stat = %04x.\n",
152 __FUNCTION__, ioread32(I2C_REG_STS(alg_data))); 152 __func__, ioread32(I2C_REG_STS(alg_data)));
153} 153}
154 154
155/** 155/**
@@ -164,7 +164,7 @@ static int i2c_pnx_master_xmit(struct i2c_adapter *adap)
164 u32 val; 164 u32 val;
165 165
166 dev_dbg(&adap->dev, "%s(): entering: stat = %04x.\n", 166 dev_dbg(&adap->dev, "%s(): entering: stat = %04x.\n",
167 __FUNCTION__, ioread32(I2C_REG_STS(alg_data))); 167 __func__, ioread32(I2C_REG_STS(alg_data)));
168 168
169 if (alg_data->mif.len > 0) { 169 if (alg_data->mif.len > 0) {
170 /* We still have something to talk about... */ 170 /* We still have something to talk about... */
@@ -179,7 +179,7 @@ static int i2c_pnx_master_xmit(struct i2c_adapter *adap)
179 alg_data->mif.len--; 179 alg_data->mif.len--;
180 iowrite32(val, I2C_REG_TX(alg_data)); 180 iowrite32(val, I2C_REG_TX(alg_data));
181 181
182 dev_dbg(&adap->dev, "%s(): xmit %#x [%d]\n", __FUNCTION__, 182 dev_dbg(&adap->dev, "%s(): xmit %#x [%d]\n", __func__,
183 val, alg_data->mif.len + 1); 183 val, alg_data->mif.len + 1);
184 184
185 if (alg_data->mif.len == 0) { 185 if (alg_data->mif.len == 0) {
@@ -197,7 +197,7 @@ static int i2c_pnx_master_xmit(struct i2c_adapter *adap)
197 del_timer_sync(&alg_data->mif.timer); 197 del_timer_sync(&alg_data->mif.timer);
198 198
199 dev_dbg(&adap->dev, "%s(): Waking up xfer routine.\n", 199 dev_dbg(&adap->dev, "%s(): Waking up xfer routine.\n",
200 __FUNCTION__); 200 __func__);
201 201
202 complete(&alg_data->mif.complete); 202 complete(&alg_data->mif.complete);
203 } 203 }
@@ -213,13 +213,13 @@ static int i2c_pnx_master_xmit(struct i2c_adapter *adap)
213 /* Stop timer. */ 213 /* Stop timer. */
214 del_timer_sync(&alg_data->mif.timer); 214 del_timer_sync(&alg_data->mif.timer);
215 dev_dbg(&adap->dev, "%s(): Waking up xfer routine after " 215 dev_dbg(&adap->dev, "%s(): Waking up xfer routine after "
216 "zero-xfer.\n", __FUNCTION__); 216 "zero-xfer.\n", __func__);
217 217
218 complete(&alg_data->mif.complete); 218 complete(&alg_data->mif.complete);
219 } 219 }
220 220
221 dev_dbg(&adap->dev, "%s(): exiting: stat = %04x.\n", 221 dev_dbg(&adap->dev, "%s(): exiting: stat = %04x.\n",
222 __FUNCTION__, ioread32(I2C_REG_STS(alg_data))); 222 __func__, ioread32(I2C_REG_STS(alg_data)));
223 223
224 return 0; 224 return 0;
225} 225}
@@ -237,14 +237,14 @@ static int i2c_pnx_master_rcv(struct i2c_adapter *adap)
237 u32 ctl = 0; 237 u32 ctl = 0;
238 238
239 dev_dbg(&adap->dev, "%s(): entering: stat = %04x.\n", 239 dev_dbg(&adap->dev, "%s(): entering: stat = %04x.\n",
240 __FUNCTION__, ioread32(I2C_REG_STS(alg_data))); 240 __func__, ioread32(I2C_REG_STS(alg_data)));
241 241
242 /* Check, whether there is already data, 242 /* Check, whether there is already data,
243 * or we didn't 'ask' for it yet. 243 * or we didn't 'ask' for it yet.
244 */ 244 */
245 if (ioread32(I2C_REG_STS(alg_data)) & mstatus_rfe) { 245 if (ioread32(I2C_REG_STS(alg_data)) & mstatus_rfe) {
246 dev_dbg(&adap->dev, "%s(): Write dummy data to fill " 246 dev_dbg(&adap->dev, "%s(): Write dummy data to fill "
247 "Rx-fifo...\n", __FUNCTION__); 247 "Rx-fifo...\n", __func__);
248 248
249 if (alg_data->mif.len == 1) { 249 if (alg_data->mif.len == 1) {
250 /* Last byte, do not acknowledge next rcv. */ 250 /* Last byte, do not acknowledge next rcv. */
@@ -276,7 +276,7 @@ static int i2c_pnx_master_rcv(struct i2c_adapter *adap)
276 if (alg_data->mif.len > 0) { 276 if (alg_data->mif.len > 0) {
277 val = ioread32(I2C_REG_RX(alg_data)); 277 val = ioread32(I2C_REG_RX(alg_data));
278 *alg_data->mif.buf++ = (u8) (val & 0xff); 278 *alg_data->mif.buf++ = (u8) (val & 0xff);
279 dev_dbg(&adap->dev, "%s(): rcv 0x%x [%d]\n", __FUNCTION__, val, 279 dev_dbg(&adap->dev, "%s(): rcv 0x%x [%d]\n", __func__, val,
280 alg_data->mif.len); 280 alg_data->mif.len);
281 281
282 alg_data->mif.len--; 282 alg_data->mif.len--;
@@ -300,7 +300,7 @@ static int i2c_pnx_master_rcv(struct i2c_adapter *adap)
300 } 300 }
301 301
302 dev_dbg(&adap->dev, "%s(): exiting: stat = %04x.\n", 302 dev_dbg(&adap->dev, "%s(): exiting: stat = %04x.\n",
303 __FUNCTION__, ioread32(I2C_REG_STS(alg_data))); 303 __func__, ioread32(I2C_REG_STS(alg_data)));
304 304
305 return 0; 305 return 0;
306} 306}
@@ -312,7 +312,7 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id)
312 struct i2c_pnx_algo_data *alg_data = adap->algo_data; 312 struct i2c_pnx_algo_data *alg_data = adap->algo_data;
313 313
314 dev_dbg(&adap->dev, "%s(): mstat = %x mctrl = %x, mode = %d\n", 314 dev_dbg(&adap->dev, "%s(): mstat = %x mctrl = %x, mode = %d\n",
315 __FUNCTION__, 315 __func__,
316 ioread32(I2C_REG_STS(alg_data)), 316 ioread32(I2C_REG_STS(alg_data)),
317 ioread32(I2C_REG_CTL(alg_data)), 317 ioread32(I2C_REG_CTL(alg_data)),
318 alg_data->mif.mode); 318 alg_data->mif.mode);
@@ -336,7 +336,7 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id)
336 /* Slave did not acknowledge, generate a STOP */ 336 /* Slave did not acknowledge, generate a STOP */
337 dev_dbg(&adap->dev, "%s(): " 337 dev_dbg(&adap->dev, "%s(): "
338 "Slave did not acknowledge, generating a STOP.\n", 338 "Slave did not acknowledge, generating a STOP.\n",
339 __FUNCTION__); 339 __func__);
340 i2c_pnx_stop(adap); 340 i2c_pnx_stop(adap);
341 341
342 /* Disable master interrupts. */ 342 /* Disable master interrupts. */
@@ -375,7 +375,7 @@ static irqreturn_t i2c_pnx_interrupt(int irq, void *dev_id)
375 iowrite32(stat | mstatus_tdi | mstatus_afi, I2C_REG_STS(alg_data)); 375 iowrite32(stat | mstatus_tdi | mstatus_afi, I2C_REG_STS(alg_data));
376 376
377 dev_dbg(&adap->dev, "%s(): exiting, stat = %x ctrl = %x.\n", 377 dev_dbg(&adap->dev, "%s(): exiting, stat = %x ctrl = %x.\n",
378 __FUNCTION__, ioread32(I2C_REG_STS(alg_data)), 378 __func__, ioread32(I2C_REG_STS(alg_data)),
379 ioread32(I2C_REG_CTL(alg_data))); 379 ioread32(I2C_REG_CTL(alg_data)));
380 380
381 return IRQ_HANDLED; 381 return IRQ_HANDLED;
@@ -447,7 +447,7 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
447 u32 stat = ioread32(I2C_REG_STS(alg_data)); 447 u32 stat = ioread32(I2C_REG_STS(alg_data));
448 448
449 dev_dbg(&adap->dev, "%s(): entering: %d messages, stat = %04x.\n", 449 dev_dbg(&adap->dev, "%s(): entering: %d messages, stat = %04x.\n",
450 __FUNCTION__, num, ioread32(I2C_REG_STS(alg_data))); 450 __func__, num, ioread32(I2C_REG_STS(alg_data)));
451 451
452 bus_reset_if_active(adap); 452 bus_reset_if_active(adap);
453 453
@@ -473,7 +473,7 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
473 alg_data->mif.ret = 0; 473 alg_data->mif.ret = 0;
474 alg_data->last = (i == num - 1); 474 alg_data->last = (i == num - 1);
475 475
476 dev_dbg(&adap->dev, "%s(): mode %d, %d bytes\n", __FUNCTION__, 476 dev_dbg(&adap->dev, "%s(): mode %d, %d bytes\n", __func__,
477 alg_data->mif.mode, 477 alg_data->mif.mode,
478 alg_data->mif.len); 478 alg_data->mif.len);
479 479
@@ -498,7 +498,7 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
498 if (!(rc = alg_data->mif.ret)) 498 if (!(rc = alg_data->mif.ret))
499 completed++; 499 completed++;
500 dev_dbg(&adap->dev, "%s(): Complete, return code = %d.\n", 500 dev_dbg(&adap->dev, "%s(): Complete, return code = %d.\n",
501 __FUNCTION__, rc); 501 __func__, rc);
502 502
503 /* Clear TDI and AFI bits in case they are set. */ 503 /* Clear TDI and AFI bits in case they are set. */
504 if ((stat = ioread32(I2C_REG_STS(alg_data))) & mstatus_tdi) { 504 if ((stat = ioread32(I2C_REG_STS(alg_data))) & mstatus_tdi) {
@@ -522,7 +522,7 @@ i2c_pnx_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
522 alg_data->mif.len = 0; 522 alg_data->mif.len = 0;
523 523
524 dev_dbg(&adap->dev, "%s(): exiting, stat = %x\n", 524 dev_dbg(&adap->dev, "%s(): exiting, stat = %x\n",
525 __FUNCTION__, ioread32(I2C_REG_STS(alg_data))); 525 __func__, ioread32(I2C_REG_STS(alg_data)));
526 526
527 if (completed != num) 527 if (completed != num)
528 return ((rc < 0) ? rc : -EREMOTEIO); 528 return ((rc < 0) ? rc : -EREMOTEIO);
@@ -563,7 +563,7 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
563 563
564 if (!i2c_pnx || !i2c_pnx->adapter) { 564 if (!i2c_pnx || !i2c_pnx->adapter) {
565 dev_err(&pdev->dev, "%s: no platform data supplied\n", 565 dev_err(&pdev->dev, "%s: no platform data supplied\n",
566 __FUNCTION__); 566 __func__);
567 ret = -EINVAL; 567 ret = -EINVAL;
568 goto out; 568 goto out;
569 } 569 }
@@ -697,6 +697,7 @@ static void __exit i2c_adap_pnx_exit(void)
697MODULE_AUTHOR("Vitaly Wool, Dennis Kovalev <source@mvista.com>"); 697MODULE_AUTHOR("Vitaly Wool, Dennis Kovalev <source@mvista.com>");
698MODULE_DESCRIPTION("I2C driver for Philips IP3204-based I2C busses"); 698MODULE_DESCRIPTION("I2C driver for Philips IP3204-based I2C busses");
699MODULE_LICENSE("GPL"); 699MODULE_LICENSE("GPL");
700MODULE_ALIAS("platform:pnx-i2c");
700 701
701/* We need to make sure I2C is initialized before USB */ 702/* We need to make sure I2C is initialized before USB */
702subsys_initcall(i2c_adap_pnx_init); 703subsys_initcall(i2c_adap_pnx_init);