Lines Matching refs:gi2c
136 static int geni_i2c_clk_map_idx(struct geni_i2c_dev *gi2c) in geni_i2c_clk_map_idx() argument
142 if (itr->clk_freq_out == gi2c->clk_freq_out) { in geni_i2c_clk_map_idx()
143 gi2c->clk_fld = itr; in geni_i2c_clk_map_idx()
150 static void qcom_geni_i2c_conf(struct geni_i2c_dev *gi2c) in qcom_geni_i2c_conf() argument
152 const struct geni_i2c_clk_fld *itr = gi2c->clk_fld; in qcom_geni_i2c_conf()
155 writel_relaxed(0, gi2c->se.base + SE_GENI_CLK_SEL); in qcom_geni_i2c_conf()
158 writel_relaxed(val, gi2c->se.base + GENI_SER_M_CLK_CFG); in qcom_geni_i2c_conf()
163 writel_relaxed(val, gi2c->se.base + SE_I2C_SCL_COUNTERS); in qcom_geni_i2c_conf()
166 static void geni_i2c_err_misc(struct geni_i2c_dev *gi2c) in geni_i2c_err_misc() argument
168 u32 m_cmd = readl_relaxed(gi2c->se.base + SE_GENI_M_CMD0); in geni_i2c_err_misc()
169 u32 m_stat = readl_relaxed(gi2c->se.base + SE_GENI_M_IRQ_STATUS); in geni_i2c_err_misc()
170 u32 geni_s = readl_relaxed(gi2c->se.base + SE_GENI_STATUS); in geni_i2c_err_misc()
171 u32 geni_ios = readl_relaxed(gi2c->se.base + SE_GENI_IOS); in geni_i2c_err_misc()
172 u32 dma = readl_relaxed(gi2c->se.base + SE_GENI_DMA_MODE_EN); in geni_i2c_err_misc()
176 rx_st = readl_relaxed(gi2c->se.base + SE_DMA_RX_IRQ_STAT); in geni_i2c_err_misc()
177 tx_st = readl_relaxed(gi2c->se.base + SE_DMA_TX_IRQ_STAT); in geni_i2c_err_misc()
179 rx_st = readl_relaxed(gi2c->se.base + SE_GENI_RX_FIFO_STATUS); in geni_i2c_err_misc()
180 tx_st = readl_relaxed(gi2c->se.base + SE_GENI_TX_FIFO_STATUS); in geni_i2c_err_misc()
182 dev_dbg(gi2c->se.dev, "DMA:%d tx_stat:0x%x, rx_stat:0x%x, irq-stat:0x%x\n", in geni_i2c_err_misc()
184 dev_dbg(gi2c->se.dev, "m_cmd:0x%x, geni_status:0x%x, geni_ios:0x%x\n", in geni_i2c_err_misc()
188 static void geni_i2c_err(struct geni_i2c_dev *gi2c, int err) in geni_i2c_err() argument
190 if (!gi2c->err) in geni_i2c_err()
191 gi2c->err = gi2c_log[err].err; in geni_i2c_err()
192 if (gi2c->cur) in geni_i2c_err()
193 dev_dbg(gi2c->se.dev, "len:%d, slv-addr:0x%x, RD/WR:%d\n", in geni_i2c_err()
194 gi2c->cur->len, gi2c->cur->addr, gi2c->cur->flags); in geni_i2c_err()
197 dev_err(gi2c->se.dev, "%s\n", gi2c_log[err].msg); in geni_i2c_err()
198 geni_i2c_err_misc(gi2c); in geni_i2c_err()
204 struct geni_i2c_dev *gi2c = dev; in geni_i2c_irq() local
205 void __iomem *base = gi2c->se.base; in geni_i2c_irq()
216 spin_lock_irqsave(&gi2c->lock, flags); in geni_i2c_irq()
222 cur = gi2c->cur; in geni_i2c_irq()
228 geni_i2c_err(gi2c, NACK); in geni_i2c_irq()
230 geni_i2c_err(gi2c, BUS_PROTO); in geni_i2c_irq()
232 geni_i2c_err(gi2c, ARB_LOST); in geni_i2c_irq()
234 geni_i2c_err(gi2c, GENI_OVERRUN); in geni_i2c_irq()
236 geni_i2c_err(gi2c, GENI_ILLEGAL_CMD); in geni_i2c_irq()
238 geni_i2c_err(gi2c, GENI_ABORT_DONE); in geni_i2c_irq()
240 geni_i2c_err(gi2c, GP_IRQ0); in geni_i2c_irq()
246 dev_dbg(gi2c->se.dev, "i2c dma tx:0x%x, dma rx:0x%x\n", in geni_i2c_irq()
255 while (gi2c->cur_rd < cur->len && p < sizeof(val)) { in geni_i2c_irq()
256 cur->buf[gi2c->cur_rd++] = val & 0xff; in geni_i2c_irq()
260 if (gi2c->cur_rd == cur->len) in geni_i2c_irq()
265 for (j = 0; j < gi2c->tx_wm; j++) { in geni_i2c_irq()
270 while (gi2c->cur_wr < cur->len && p < sizeof(val)) { in geni_i2c_irq()
271 temp = cur->buf[gi2c->cur_wr++]; in geni_i2c_irq()
277 if (gi2c->cur_wr == cur->len) { in geni_i2c_irq()
296 complete(&gi2c->done); in geni_i2c_irq()
298 spin_unlock_irqrestore(&gi2c->lock, flags); in geni_i2c_irq()
303 static void geni_i2c_abort_xfer(struct geni_i2c_dev *gi2c) in geni_i2c_abort_xfer() argument
309 spin_lock_irqsave(&gi2c->lock, flags); in geni_i2c_abort_xfer()
310 geni_i2c_err(gi2c, GENI_TIMEOUT); in geni_i2c_abort_xfer()
311 gi2c->cur = NULL; in geni_i2c_abort_xfer()
312 geni_se_abort_m_cmd(&gi2c->se); in geni_i2c_abort_xfer()
313 spin_unlock_irqrestore(&gi2c->lock, flags); in geni_i2c_abort_xfer()
315 time_left = wait_for_completion_timeout(&gi2c->done, time_left); in geni_i2c_abort_xfer()
316 val = readl_relaxed(gi2c->se.base + SE_GENI_M_IRQ_STATUS); in geni_i2c_abort_xfer()
320 dev_err(gi2c->se.dev, "Timeout abort_m_cmd\n"); in geni_i2c_abort_xfer()
323 static void geni_i2c_rx_fsm_rst(struct geni_i2c_dev *gi2c) in geni_i2c_rx_fsm_rst() argument
328 writel_relaxed(1, gi2c->se.base + SE_DMA_RX_FSM_RST); in geni_i2c_rx_fsm_rst()
330 time_left = wait_for_completion_timeout(&gi2c->done, time_left); in geni_i2c_rx_fsm_rst()
331 val = readl_relaxed(gi2c->se.base + SE_DMA_RX_IRQ_STAT); in geni_i2c_rx_fsm_rst()
335 dev_err(gi2c->se.dev, "Timeout resetting RX_FSM\n"); in geni_i2c_rx_fsm_rst()
338 static void geni_i2c_tx_fsm_rst(struct geni_i2c_dev *gi2c) in geni_i2c_tx_fsm_rst() argument
343 writel_relaxed(1, gi2c->se.base + SE_DMA_TX_FSM_RST); in geni_i2c_tx_fsm_rst()
345 time_left = wait_for_completion_timeout(&gi2c->done, time_left); in geni_i2c_tx_fsm_rst()
346 val = readl_relaxed(gi2c->se.base + SE_DMA_TX_IRQ_STAT); in geni_i2c_tx_fsm_rst()
350 dev_err(gi2c->se.dev, "Timeout resetting TX_FSM\n"); in geni_i2c_tx_fsm_rst()
353 static int geni_i2c_rx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, in geni_i2c_rx_one_msg() argument
359 struct geni_se *se = &gi2c->se; in geni_i2c_rx_one_msg()
379 time_left = wait_for_completion_timeout(&gi2c->done, XFER_TIMEOUT); in geni_i2c_rx_one_msg()
381 geni_i2c_abort_xfer(gi2c); in geni_i2c_rx_one_msg()
383 gi2c->cur_rd = 0; in geni_i2c_rx_one_msg()
385 if (gi2c->err) in geni_i2c_rx_one_msg()
386 geni_i2c_rx_fsm_rst(gi2c); in geni_i2c_rx_one_msg()
388 i2c_put_dma_safe_msg_buf(dma_buf, msg, !gi2c->err); in geni_i2c_rx_one_msg()
391 return gi2c->err; in geni_i2c_rx_one_msg()
394 static int geni_i2c_tx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, in geni_i2c_tx_one_msg() argument
400 struct geni_se *se = &gi2c->se; in geni_i2c_tx_one_msg()
423 time_left = wait_for_completion_timeout(&gi2c->done, XFER_TIMEOUT); in geni_i2c_tx_one_msg()
425 geni_i2c_abort_xfer(gi2c); in geni_i2c_tx_one_msg()
427 gi2c->cur_wr = 0; in geni_i2c_tx_one_msg()
429 if (gi2c->err) in geni_i2c_tx_one_msg()
430 geni_i2c_tx_fsm_rst(gi2c); in geni_i2c_tx_one_msg()
432 i2c_put_dma_safe_msg_buf(dma_buf, msg, !gi2c->err); in geni_i2c_tx_one_msg()
435 return gi2c->err; in geni_i2c_tx_one_msg()
442 struct geni_i2c_dev *gi2c = i2c_get_adapdata(adap); in geni_i2c_xfer() local
445 gi2c->err = 0; in geni_i2c_xfer()
446 reinit_completion(&gi2c->done); in geni_i2c_xfer()
447 ret = pm_runtime_get_sync(gi2c->se.dev); in geni_i2c_xfer()
449 dev_err(gi2c->se.dev, "error turning SE resources:%d\n", ret); in geni_i2c_xfer()
450 pm_runtime_put_noidle(gi2c->se.dev); in geni_i2c_xfer()
452 pm_runtime_set_suspended(gi2c->se.dev); in geni_i2c_xfer()
456 qcom_geni_i2c_conf(gi2c); in geni_i2c_xfer()
462 gi2c->cur = &msgs[i]; in geni_i2c_xfer()
464 ret = geni_i2c_rx_one_msg(gi2c, &msgs[i], m_param); in geni_i2c_xfer()
466 ret = geni_i2c_tx_one_msg(gi2c, &msgs[i], m_param); in geni_i2c_xfer()
474 pm_runtime_mark_last_busy(gi2c->se.dev); in geni_i2c_xfer()
475 pm_runtime_put_autosuspend(gi2c->se.dev); in geni_i2c_xfer()
476 gi2c->cur = NULL; in geni_i2c_xfer()
477 gi2c->err = 0; in geni_i2c_xfer()
501 struct geni_i2c_dev *gi2c; in geni_i2c_probe() local
506 gi2c = devm_kzalloc(&pdev->dev, sizeof(*gi2c), GFP_KERNEL); in geni_i2c_probe()
507 if (!gi2c) in geni_i2c_probe()
510 gi2c->se.dev = &pdev->dev; in geni_i2c_probe()
511 gi2c->se.wrapper = dev_get_drvdata(pdev->dev.parent); in geni_i2c_probe()
513 gi2c->se.base = devm_ioremap_resource(&pdev->dev, res); in geni_i2c_probe()
514 if (IS_ERR(gi2c->se.base)) in geni_i2c_probe()
515 return PTR_ERR(gi2c->se.base); in geni_i2c_probe()
517 gi2c->se.clk = devm_clk_get(&pdev->dev, "se"); in geni_i2c_probe()
518 if (IS_ERR(gi2c->se.clk) && !has_acpi_companion(&pdev->dev)) { in geni_i2c_probe()
519 ret = PTR_ERR(gi2c->se.clk); in geni_i2c_probe()
525 &gi2c->clk_freq_out); in geni_i2c_probe()
529 gi2c->clk_freq_out = KHZ(100); in geni_i2c_probe()
533 ACPI_COMPANION_SET(&gi2c->adap.dev, ACPI_COMPANION(&pdev->dev)); in geni_i2c_probe()
535 gi2c->irq = platform_get_irq(pdev, 0); in geni_i2c_probe()
536 if (gi2c->irq < 0) { in geni_i2c_probe()
538 return gi2c->irq; in geni_i2c_probe()
541 ret = geni_i2c_clk_map_idx(gi2c); in geni_i2c_probe()
544 gi2c->clk_freq_out, ret); in geni_i2c_probe()
548 gi2c->adap.algo = &geni_i2c_algo; in geni_i2c_probe()
549 init_completion(&gi2c->done); in geni_i2c_probe()
550 spin_lock_init(&gi2c->lock); in geni_i2c_probe()
551 platform_set_drvdata(pdev, gi2c); in geni_i2c_probe()
552 ret = devm_request_irq(&pdev->dev, gi2c->irq, geni_i2c_irq, in geni_i2c_probe()
553 IRQF_TRIGGER_HIGH, "i2c_geni", gi2c); in geni_i2c_probe()
556 gi2c->irq, ret); in geni_i2c_probe()
560 disable_irq(gi2c->irq); in geni_i2c_probe()
561 i2c_set_adapdata(&gi2c->adap, gi2c); in geni_i2c_probe()
562 gi2c->adap.dev.parent = &pdev->dev; in geni_i2c_probe()
563 gi2c->adap.dev.of_node = pdev->dev.of_node; in geni_i2c_probe()
564 strlcpy(gi2c->adap.name, "Geni-I2C", sizeof(gi2c->adap.name)); in geni_i2c_probe()
566 ret = geni_se_resources_on(&gi2c->se); in geni_i2c_probe()
571 proto = geni_se_read_proto(&gi2c->se); in geni_i2c_probe()
572 tx_depth = geni_se_get_tx_fifo_depth(&gi2c->se); in geni_i2c_probe()
575 geni_se_resources_off(&gi2c->se); in geni_i2c_probe()
578 gi2c->tx_wm = tx_depth - 1; in geni_i2c_probe()
579 geni_se_init(&gi2c->se, gi2c->tx_wm, tx_depth); in geni_i2c_probe()
580 geni_se_config_packing(&gi2c->se, BITS_PER_BYTE, PACKING_BYTES_PW, in geni_i2c_probe()
582 ret = geni_se_resources_off(&gi2c->se); in geni_i2c_probe()
590 gi2c->suspended = 1; in geni_i2c_probe()
591 pm_runtime_set_suspended(gi2c->se.dev); in geni_i2c_probe()
592 pm_runtime_set_autosuspend_delay(gi2c->se.dev, I2C_AUTO_SUSPEND_DELAY); in geni_i2c_probe()
593 pm_runtime_use_autosuspend(gi2c->se.dev); in geni_i2c_probe()
594 pm_runtime_enable(gi2c->se.dev); in geni_i2c_probe()
596 ret = i2c_add_adapter(&gi2c->adap); in geni_i2c_probe()
599 pm_runtime_disable(gi2c->se.dev); in geni_i2c_probe()
610 struct geni_i2c_dev *gi2c = platform_get_drvdata(pdev); in geni_i2c_remove() local
612 i2c_del_adapter(&gi2c->adap); in geni_i2c_remove()
613 pm_runtime_disable(gi2c->se.dev); in geni_i2c_remove()
620 struct geni_i2c_dev *gi2c = dev_get_drvdata(dev); in geni_i2c_runtime_suspend() local
622 disable_irq(gi2c->irq); in geni_i2c_runtime_suspend()
623 ret = geni_se_resources_off(&gi2c->se); in geni_i2c_runtime_suspend()
625 enable_irq(gi2c->irq); in geni_i2c_runtime_suspend()
629 gi2c->suspended = 1; in geni_i2c_runtime_suspend()
638 struct geni_i2c_dev *gi2c = dev_get_drvdata(dev); in geni_i2c_runtime_resume() local
640 ret = geni_se_resources_on(&gi2c->se); in geni_i2c_runtime_resume()
644 enable_irq(gi2c->irq); in geni_i2c_runtime_resume()
645 gi2c->suspended = 0; in geni_i2c_runtime_resume()
651 struct geni_i2c_dev *gi2c = dev_get_drvdata(dev); in geni_i2c_suspend_noirq() local
653 if (!gi2c->suspended) { in geni_i2c_suspend_noirq()