Lines Matching refs:cpm
15 * Converted to of_platform_device. Renamed to i2c-cpm.c.
34 #include <asm/cpm.h>
119 struct cpm_i2c *cpm;
124 cpm = i2c_get_adapdata(dev_id);
125 i2c_reg = cpm->i2c_reg;
133 wake_up(&cpm->i2c_wait);
138 static void cpm_reset_i2c_params(struct cpm_i2c *cpm)
140 struct i2c_ram __iomem *i2c_ram = cpm->i2c_ram;
143 out_be16(&i2c_ram->tbase, (u8 __iomem *)cpm->tbase - DPRAM_BASE);
144 out_be16(&i2c_ram->rbase, (u8 __iomem *)cpm->rbase - DPRAM_BASE);
146 if (cpm->version == 1) {
170 struct cpm_i2c *cpm = i2c_get_adapdata(adap);
171 struct i2c_reg __iomem *i2c_reg = cpm->i2c_reg;
175 cpm_command(cpm->cp_command, CPM_CR_CLOSE_RX_BD);
189 struct cpm_i2c *cpm = i2c_get_adapdata(adap);
191 tbdf = cpm->tbase + tx;
192 rbdf = cpm->rbase + rx;
196 tb = cpm->txbuf[tx];
197 rb = cpm->rxbuf[rx];
247 struct cpm_i2c *cpm = i2c_get_adapdata(adap);
249 tbdf = cpm->tbase + tx;
250 rbdf = cpm->rbase + rx;
252 tb = cpm->txbuf[tx];
253 rb = cpm->rxbuf[rx];
299 struct cpm_i2c *cpm = i2c_get_adapdata(adap);
300 struct i2c_reg __iomem *i2c_reg = cpm->i2c_reg;
301 struct i2c_ram __iomem *i2c_ram = cpm->i2c_ram;
313 tbdf = cpm->tbase;
314 rbdf = cpm->rbase;
324 out_8(&cpm->i2c_reg->i2com, I2COM_MASTER);
353 ret = wait_event_timeout(cpm->i2c_wait,
358 ret = wait_event_timeout(cpm->i2c_wait,
418 .name = "i2c-cpm",
423 static int cpm_i2c_setup(struct cpm_i2c *cpm)
425 struct platform_device *ofdev = cpm->ofdev;
433 dev_dbg(&cpm->ofdev->dev, "cpm_i2c_setup()\n");
435 init_waitqueue_head(&cpm->i2c_wait);
437 cpm->irq = irq_of_parse_and_map(ofdev->dev.of_node, 0);
438 if (!cpm->irq)
442 ret = request_irq(cpm->irq, cpm_i2c_interrupt, 0, "cpm_i2c",
443 &cpm->adap);
457 cpm->i2c_ram = i2c_base;
458 cpm->i2c_addr = in_be16(&cpm->i2c_ram->rpbase);
464 if (cpm->i2c_addr) {
465 cpm->i2c_ram = cpm_muram_addr(cpm->i2c_addr);
469 cpm->version = 1;
472 cpm->i2c_addr = cpm_muram_alloc(sizeof(struct i2c_ram), 64);
473 cpm->i2c_ram = cpm_muram_addr(cpm->i2c_addr);
474 out_be16(i2c_base, cpm->i2c_addr);
477 cpm->version = 2;
486 cpm->i2c_reg = of_iomap(ofdev->dev.of_node, 0);
487 if (cpm->i2c_reg == NULL) {
492 data = of_get_property(ofdev->dev.of_node, "fsl,cpm-command", &len);
497 cpm->cp_command = *data;
501 cpm->adap.class = *data;
505 cpm->freq = *data;
507 cpm->freq = 60000; /* use 60kHz i2c clock by default */
513 cpm->dp_addr = cpm_muram_alloc(sizeof(cbd_t) * 2 * CPM_MAXBD, 8);
514 if (!cpm->dp_addr) {
519 cpm->tbase = cpm_muram_addr(cpm->dp_addr);
520 cpm->rbase = cpm_muram_addr(cpm->dp_addr + sizeof(cbd_t) * CPM_MAXBD);
524 tbdf = cpm->tbase;
525 rbdf = cpm->rbase;
528 cpm->rxbuf[i] = dma_alloc_coherent(&cpm->ofdev->dev,
530 &cpm->rxdma[i], GFP_KERNEL);
531 if (!cpm->rxbuf[i]) {
535 out_be32(&rbdf[i].cbd_bufaddr, ((cpm->rxdma[i] + 1) & ~1));
537 cpm->txbuf[i] = dma_alloc_coherent(&cpm->ofdev->dev,
539 &cpm->txdma[i], GFP_KERNEL);
540 if (!cpm->txbuf[i]) {
544 out_be32(&tbdf[i].cbd_bufaddr, cpm->txdma[i]);
549 cpm_reset_i2c_params(cpm);
551 dev_dbg(&cpm->ofdev->dev, "i2c_ram 0x%p, i2c_addr 0x%04x, freq %d\n",
552 cpm->i2c_ram, cpm->i2c_addr, cpm->freq);
553 dev_dbg(&cpm->ofdev->dev, "tbase 0x%04x, rbase 0x%04x\n",
554 (u8 __iomem *)cpm->tbase - DPRAM_BASE,
555 (u8 __iomem *)cpm->rbase - DPRAM_BASE);
557 cpm_command(cpm->cp_command, CPM_CR_INIT_TRX);
562 out_8(&cpm->i2c_reg->i2add, 0x7f << 1);
569 brg = get_brgfreq() / (32 * 2 * cpm->freq) - 3;
570 out_8(&cpm->i2c_reg->i2brg, brg);
572 out_8(&cpm->i2c_reg->i2mod, 0x00);
573 out_8(&cpm->i2c_reg->i2com, I2COM_MASTER); /* Master mode */
576 out_8(&cpm->i2c_reg->i2cmr, 0);
577 out_8(&cpm->i2c_reg->i2cer, 0xff);
583 if (cpm->rxbuf[i])
584 dma_free_coherent(&cpm->ofdev->dev, CPM_MAX_READ + 1,
585 cpm->rxbuf[i], cpm->rxdma[i]);
586 if (cpm->txbuf[i])
587 dma_free_coherent(&cpm->ofdev->dev, CPM_MAX_READ + 1,
588 cpm->txbuf[i], cpm->txdma[i]);
590 cpm_muram_free(cpm->dp_addr);
592 iounmap(cpm->i2c_reg);
594 if ((cpm->version == 1) && (!cpm->i2c_addr))
595 iounmap(cpm->i2c_ram);
596 if (cpm->version == 2)
597 cpm_muram_free(cpm->i2c_addr);
599 free_irq(cpm->irq, &cpm->adap);
603 static void cpm_i2c_shutdown(struct cpm_i2c *cpm)
608 clrbits8(&cpm->i2c_reg->i2mod, I2MOD_EN);
611 out_8(&cpm->i2c_reg->i2cmr, 0);
612 out_8(&cpm->i2c_reg->i2cer, 0xff);
614 free_irq(cpm->irq, &cpm->adap);
618 dma_free_coherent(&cpm->ofdev->dev, CPM_MAX_READ + 1,
619 cpm->rxbuf[i], cpm->rxdma[i]);
620 dma_free_coherent(&cpm->ofdev->dev, CPM_MAX_READ + 1,
621 cpm->txbuf[i], cpm->txdma[i]);
624 cpm_muram_free(cpm->dp_addr);
625 iounmap(cpm->i2c_reg);
627 if ((cpm->version == 1) && (!cpm->i2c_addr))
628 iounmap(cpm->i2c_ram);
629 if (cpm->version == 2)
630 cpm_muram_free(cpm->i2c_addr);
636 struct cpm_i2c *cpm;
639 cpm = kzalloc(sizeof(struct cpm_i2c), GFP_KERNEL);
640 if (!cpm)
643 cpm->ofdev = ofdev;
645 platform_set_drvdata(ofdev, cpm);
647 cpm->adap = cpm_ops;
648 i2c_set_adapdata(&cpm->adap, cpm);
649 cpm->adap.dev.parent = &ofdev->dev;
650 cpm->adap.dev.of_node = of_node_get(ofdev->dev.of_node);
652 result = cpm_i2c_setup(cpm);
661 cpm->adap.nr = (data && len == 4) ? *data : -1;
662 result = i2c_add_numbered_adapter(&cpm->adap);
668 cpm->adap.name);
672 cpm_i2c_shutdown(cpm);
674 kfree(cpm);
681 struct cpm_i2c *cpm = platform_get_drvdata(ofdev);
683 i2c_del_adapter(&cpm->adap);
685 cpm_i2c_shutdown(cpm);
687 kfree(cpm);
706 .name = "fsl-i2c-cpm",