Lines Matching +full:geni +full:- +full:se +full:- +full:qup
1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
5 #include <linux/dma-mapping.h>
15 #include <linux/qcom-geni-se.h>
76 struct geni_se se; member
97 [GP_IRQ0] = {-EIO, "Unknown I2C err GP_IRQ0"},
98 [NACK] = {-ENXIO, "NACK: slv unresponsive, check its power/reset-ln"},
99 [GP_IRQ2] = {-EIO, "Unknown I2C err GP IRQ2"},
100 [BUS_PROTO] = {-EPROTO, "Bus proto err, noisy/unepxected start/stop"},
101 [ARB_LOST] = {-EAGAIN, "Bus arbitration lost, clock line undriveable"},
102 [GP_IRQ5] = {-EIO, "Unknown I2C err GP IRQ5"},
103 [GENI_OVERRUN] = {-EIO, "Cmd overrun, check GENI cmd-state machine"},
104 [GENI_ILLEGAL_CMD] = {-EIO, "Illegal cmd, check GENI cmd-state machine"},
105 [GENI_ABORT_DONE] = {-ETIMEDOUT, "Abort after timeout successful"},
106 [GENI_TIMEOUT] = {-ETIMEDOUT, "I2C TXN timed out"},
141 if (itr->clk_freq_out == gi2c->clk_freq_out) { in geni_i2c_clk_map_idx()
142 gi2c->clk_fld = itr; in geni_i2c_clk_map_idx()
146 return -EINVAL; in geni_i2c_clk_map_idx()
151 const struct geni_i2c_clk_fld *itr = gi2c->clk_fld; in qcom_geni_i2c_conf()
154 writel_relaxed(0, gi2c->se.base + SE_GENI_CLK_SEL); in qcom_geni_i2c_conf()
156 val = (itr->clk_div << CLK_DIV_SHFT) | SER_CLK_EN; in qcom_geni_i2c_conf()
157 writel_relaxed(val, gi2c->se.base + GENI_SER_M_CLK_CFG); in qcom_geni_i2c_conf()
159 val = itr->t_high_cnt << HIGH_COUNTER_SHFT; in qcom_geni_i2c_conf()
160 val |= itr->t_low_cnt << LOW_COUNTER_SHFT; in qcom_geni_i2c_conf()
161 val |= itr->t_cycle_cnt; in qcom_geni_i2c_conf()
162 writel_relaxed(val, gi2c->se.base + SE_I2C_SCL_COUNTERS); in qcom_geni_i2c_conf()
167 u32 m_cmd = readl_relaxed(gi2c->se.base + SE_GENI_M_CMD0); in geni_i2c_err_misc()
168 u32 m_stat = readl_relaxed(gi2c->se.base + SE_GENI_M_IRQ_STATUS); in geni_i2c_err_misc()
169 u32 geni_s = readl_relaxed(gi2c->se.base + SE_GENI_STATUS); in geni_i2c_err_misc()
170 u32 geni_ios = readl_relaxed(gi2c->se.base + SE_GENI_IOS); in geni_i2c_err_misc()
171 u32 dma = readl_relaxed(gi2c->se.base + SE_GENI_DMA_MODE_EN); in geni_i2c_err_misc()
175 rx_st = readl_relaxed(gi2c->se.base + SE_DMA_RX_IRQ_STAT); in geni_i2c_err_misc()
176 tx_st = readl_relaxed(gi2c->se.base + SE_DMA_TX_IRQ_STAT); in geni_i2c_err_misc()
178 rx_st = readl_relaxed(gi2c->se.base + SE_GENI_RX_FIFO_STATUS); in geni_i2c_err_misc()
179 tx_st = readl_relaxed(gi2c->se.base + SE_GENI_TX_FIFO_STATUS); in geni_i2c_err_misc()
181 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()
183 dev_dbg(gi2c->se.dev, "m_cmd:0x%x, geni_status:0x%x, geni_ios:0x%x\n", in geni_i2c_err_misc()
189 if (!gi2c->err) in geni_i2c_err()
190 gi2c->err = gi2c_log[err].err; in geni_i2c_err()
191 if (gi2c->cur) in geni_i2c_err()
192 dev_dbg(gi2c->se.dev, "len:%d, slv-addr:0x%x, RD/WR:%d\n", in geni_i2c_err()
193 gi2c->cur->len, gi2c->cur->addr, gi2c->cur->flags); in geni_i2c_err()
196 dev_err(gi2c->se.dev, "%s\n", gi2c_log[err].msg); in geni_i2c_err()
213 spin_lock_irqsave(&gi2c->lock, flags); in geni_i2c_irq()
214 m_stat = readl_relaxed(gi2c->se.base + SE_GENI_M_IRQ_STATUS); in geni_i2c_irq()
215 rx_st = readl_relaxed(gi2c->se.base + SE_GENI_RX_FIFO_STATUS); in geni_i2c_irq()
216 dm_tx_st = readl_relaxed(gi2c->se.base + SE_DMA_TX_IRQ_STAT); in geni_i2c_irq()
217 dm_rx_st = readl_relaxed(gi2c->se.base + SE_DMA_RX_IRQ_STAT); in geni_i2c_irq()
218 dma = readl_relaxed(gi2c->se.base + SE_GENI_DMA_MODE_EN); in geni_i2c_irq()
219 cur = gi2c->cur; in geni_i2c_irq()
241 writel_relaxed(0, gi2c->se.base + in geni_i2c_irq()
247 dev_dbg(gi2c->se.dev, "i2c dma tx:0x%x, dma rx:0x%x\n", in geni_i2c_irq()
252 if (cur->flags & I2C_M_RD && in geni_i2c_irq()
260 val = readl_relaxed(gi2c->se.base + SE_GENI_RX_FIFOn); in geni_i2c_irq()
261 while (gi2c->cur_rd < cur->len && p < sizeof(val)) { in geni_i2c_irq()
262 cur->buf[gi2c->cur_rd++] = val & 0xff; in geni_i2c_irq()
266 if (gi2c->cur_rd == cur->len) in geni_i2c_irq()
269 } else if (!(cur->flags & I2C_M_RD) && in geni_i2c_irq()
271 for (j = 0; j < gi2c->tx_wm; j++) { in geni_i2c_irq()
276 while (gi2c->cur_wr < cur->len && p < sizeof(val)) { in geni_i2c_irq()
277 temp = cur->buf[gi2c->cur_wr++]; in geni_i2c_irq()
281 writel_relaxed(val, gi2c->se.base + SE_GENI_TX_FIFOn); in geni_i2c_irq()
283 if (gi2c->cur_wr == cur->len) { in geni_i2c_irq()
284 writel_relaxed(0, gi2c->se.base + in geni_i2c_irq()
292 writel_relaxed(m_stat, gi2c->se.base + SE_GENI_M_IRQ_CLEAR); in geni_i2c_irq()
296 writel_relaxed(dm_tx_st, gi2c->se.base + in geni_i2c_irq()
299 writel_relaxed(dm_rx_st, gi2c->se.base + in geni_i2c_irq()
302 /* if this is err with done-bit not set, handle that through timeout. */ in geni_i2c_irq()
304 complete(&gi2c->done); in geni_i2c_irq()
306 complete(&gi2c->done); in geni_i2c_irq()
308 complete(&gi2c->done); in geni_i2c_irq()
310 spin_unlock_irqrestore(&gi2c->lock, flags); in geni_i2c_irq()
320 spin_lock_irqsave(&gi2c->lock, flags); in geni_i2c_abort_xfer()
322 gi2c->cur = NULL; in geni_i2c_abort_xfer()
323 geni_se_abort_m_cmd(&gi2c->se); in geni_i2c_abort_xfer()
324 spin_unlock_irqrestore(&gi2c->lock, flags); in geni_i2c_abort_xfer()
326 time_left = wait_for_completion_timeout(&gi2c->done, time_left); in geni_i2c_abort_xfer()
327 val = readl_relaxed(gi2c->se.base + SE_GENI_M_IRQ_STATUS); in geni_i2c_abort_xfer()
331 dev_err(gi2c->se.dev, "Timeout abort_m_cmd\n"); in geni_i2c_abort_xfer()
339 writel_relaxed(1, gi2c->se.base + SE_DMA_RX_FSM_RST); in geni_i2c_rx_fsm_rst()
341 time_left = wait_for_completion_timeout(&gi2c->done, time_left); in geni_i2c_rx_fsm_rst()
342 val = readl_relaxed(gi2c->se.base + SE_DMA_RX_IRQ_STAT); in geni_i2c_rx_fsm_rst()
346 dev_err(gi2c->se.dev, "Timeout resetting RX_FSM\n"); in geni_i2c_rx_fsm_rst()
354 writel_relaxed(1, gi2c->se.base + SE_DMA_TX_FSM_RST); in geni_i2c_tx_fsm_rst()
356 time_left = wait_for_completion_timeout(&gi2c->done, time_left); in geni_i2c_tx_fsm_rst()
357 val = readl_relaxed(gi2c->se.base + SE_DMA_TX_IRQ_STAT); in geni_i2c_tx_fsm_rst()
361 dev_err(gi2c->se.dev, "Timeout resetting TX_FSM\n"); in geni_i2c_tx_fsm_rst()
372 gi2c->cur = msg; in geni_i2c_rx_one_msg()
378 geni_se_select_mode(&gi2c->se, mode); in geni_i2c_rx_one_msg()
379 writel_relaxed(msg->len, gi2c->se.base + SE_I2C_RX_TRANS_LEN); in geni_i2c_rx_one_msg()
380 geni_se_setup_m_cmd(&gi2c->se, I2C_READ, m_param); in geni_i2c_rx_one_msg()
384 ret = geni_se_rx_dma_prep(&gi2c->se, dma_buf, msg->len, in geni_i2c_rx_one_msg()
388 geni_se_select_mode(&gi2c->se, mode); in geni_i2c_rx_one_msg()
393 time_left = wait_for_completion_timeout(&gi2c->done, XFER_TIMEOUT); in geni_i2c_rx_one_msg()
397 gi2c->cur_rd = 0; in geni_i2c_rx_one_msg()
399 if (gi2c->err) in geni_i2c_rx_one_msg()
401 geni_se_rx_dma_unprep(&gi2c->se, rx_dma, msg->len); in geni_i2c_rx_one_msg()
402 i2c_put_dma_safe_msg_buf(dma_buf, msg, !gi2c->err); in geni_i2c_rx_one_msg()
404 return gi2c->err; in geni_i2c_rx_one_msg()
415 gi2c->cur = msg; in geni_i2c_tx_one_msg()
421 geni_se_select_mode(&gi2c->se, mode); in geni_i2c_tx_one_msg()
422 writel_relaxed(msg->len, gi2c->se.base + SE_I2C_TX_TRANS_LEN); in geni_i2c_tx_one_msg()
423 geni_se_setup_m_cmd(&gi2c->se, I2C_WRITE, m_param); in geni_i2c_tx_one_msg()
427 ret = geni_se_tx_dma_prep(&gi2c->se, dma_buf, msg->len, in geni_i2c_tx_one_msg()
431 geni_se_select_mode(&gi2c->se, mode); in geni_i2c_tx_one_msg()
437 writel_relaxed(1, gi2c->se.base + SE_GENI_TX_WATERMARK_REG); in geni_i2c_tx_one_msg()
439 time_left = wait_for_completion_timeout(&gi2c->done, XFER_TIMEOUT); in geni_i2c_tx_one_msg()
443 gi2c->cur_wr = 0; in geni_i2c_tx_one_msg()
445 if (gi2c->err) in geni_i2c_tx_one_msg()
447 geni_se_tx_dma_unprep(&gi2c->se, tx_dma, msg->len); in geni_i2c_tx_one_msg()
448 i2c_put_dma_safe_msg_buf(dma_buf, msg, !gi2c->err); in geni_i2c_tx_one_msg()
450 return gi2c->err; in geni_i2c_tx_one_msg()
460 gi2c->err = 0; in geni_i2c_xfer()
461 reinit_completion(&gi2c->done); in geni_i2c_xfer()
462 ret = pm_runtime_get_sync(gi2c->se.dev); in geni_i2c_xfer()
464 dev_err(gi2c->se.dev, "error turning SE resources:%d\n", ret); in geni_i2c_xfer()
465 pm_runtime_put_noidle(gi2c->se.dev); in geni_i2c_xfer()
467 pm_runtime_set_suspended(gi2c->se.dev); in geni_i2c_xfer()
473 u32 m_param = i < (num - 1) ? STOP_STRETCH : 0; in geni_i2c_xfer()
488 pm_runtime_mark_last_busy(gi2c->se.dev); in geni_i2c_xfer()
489 pm_runtime_put_autosuspend(gi2c->se.dev); in geni_i2c_xfer()
490 gi2c->cur = NULL; in geni_i2c_xfer()
491 gi2c->err = 0; in geni_i2c_xfer()
512 gi2c = devm_kzalloc(&pdev->dev, sizeof(*gi2c), GFP_KERNEL); in geni_i2c_probe()
514 return -ENOMEM; in geni_i2c_probe()
516 gi2c->se.dev = &pdev->dev; in geni_i2c_probe()
517 gi2c->se.wrapper = dev_get_drvdata(pdev->dev.parent); in geni_i2c_probe()
519 gi2c->se.base = devm_ioremap_resource(&pdev->dev, res); in geni_i2c_probe()
520 if (IS_ERR(gi2c->se.base)) in geni_i2c_probe()
521 return PTR_ERR(gi2c->se.base); in geni_i2c_probe()
523 gi2c->se.clk = devm_clk_get(&pdev->dev, "se"); in geni_i2c_probe()
524 if (IS_ERR(gi2c->se.clk)) { in geni_i2c_probe()
525 ret = PTR_ERR(gi2c->se.clk); in geni_i2c_probe()
526 dev_err(&pdev->dev, "Err getting SE Core clk %d\n", ret); in geni_i2c_probe()
530 ret = device_property_read_u32(&pdev->dev, "clock-frequency", in geni_i2c_probe()
531 &gi2c->clk_freq_out); in geni_i2c_probe()
533 dev_info(&pdev->dev, in geni_i2c_probe()
535 gi2c->clk_freq_out = KHZ(100); in geni_i2c_probe()
538 gi2c->irq = platform_get_irq(pdev, 0); in geni_i2c_probe()
539 if (gi2c->irq < 0) { in geni_i2c_probe()
540 dev_err(&pdev->dev, "IRQ error for i2c-geni\n"); in geni_i2c_probe()
541 return gi2c->irq; in geni_i2c_probe()
546 dev_err(&pdev->dev, "Invalid clk frequency %d Hz: %d\n", in geni_i2c_probe()
547 gi2c->clk_freq_out, ret); in geni_i2c_probe()
551 gi2c->adap.algo = &geni_i2c_algo; in geni_i2c_probe()
552 init_completion(&gi2c->done); in geni_i2c_probe()
553 spin_lock_init(&gi2c->lock); in geni_i2c_probe()
555 ret = devm_request_irq(&pdev->dev, gi2c->irq, geni_i2c_irq, in geni_i2c_probe()
558 dev_err(&pdev->dev, "Request_irq failed:%d: err:%d\n", in geni_i2c_probe()
559 gi2c->irq, ret); in geni_i2c_probe()
562 /* Disable the interrupt so that the system can enter low-power mode */ in geni_i2c_probe()
563 disable_irq(gi2c->irq); in geni_i2c_probe()
564 i2c_set_adapdata(&gi2c->adap, gi2c); in geni_i2c_probe()
565 gi2c->adap.dev.parent = &pdev->dev; in geni_i2c_probe()
566 gi2c->adap.dev.of_node = pdev->dev.of_node; in geni_i2c_probe()
567 strlcpy(gi2c->adap.name, "Geni-I2C", sizeof(gi2c->adap.name)); in geni_i2c_probe()
569 ret = geni_se_resources_on(&gi2c->se); in geni_i2c_probe()
571 dev_err(&pdev->dev, "Error turning on resources %d\n", ret); in geni_i2c_probe()
574 proto = geni_se_read_proto(&gi2c->se); in geni_i2c_probe()
575 tx_depth = geni_se_get_tx_fifo_depth(&gi2c->se); in geni_i2c_probe()
577 dev_err(&pdev->dev, "Invalid proto %d\n", proto); in geni_i2c_probe()
578 geni_se_resources_off(&gi2c->se); in geni_i2c_probe()
579 return -ENXIO; in geni_i2c_probe()
581 gi2c->tx_wm = tx_depth - 1; in geni_i2c_probe()
582 geni_se_init(&gi2c->se, gi2c->tx_wm, tx_depth); in geni_i2c_probe()
583 geni_se_config_packing(&gi2c->se, BITS_PER_BYTE, PACKING_BYTES_PW, in geni_i2c_probe()
585 ret = geni_se_resources_off(&gi2c->se); in geni_i2c_probe()
587 dev_err(&pdev->dev, "Error turning off resources %d\n", ret); in geni_i2c_probe()
591 dev_dbg(&pdev->dev, "i2c fifo/se-dma mode. fifo depth:%d\n", tx_depth); in geni_i2c_probe()
593 gi2c->suspended = 1; in geni_i2c_probe()
594 pm_runtime_set_suspended(gi2c->se.dev); in geni_i2c_probe()
595 pm_runtime_set_autosuspend_delay(gi2c->se.dev, I2C_AUTO_SUSPEND_DELAY); in geni_i2c_probe()
596 pm_runtime_use_autosuspend(gi2c->se.dev); in geni_i2c_probe()
597 pm_runtime_enable(gi2c->se.dev); in geni_i2c_probe()
599 ret = i2c_add_adapter(&gi2c->adap); in geni_i2c_probe()
601 dev_err(&pdev->dev, "Error adding i2c adapter %d\n", ret); in geni_i2c_probe()
602 pm_runtime_disable(gi2c->se.dev); in geni_i2c_probe()
613 i2c_del_adapter(&gi2c->adap); in geni_i2c_remove()
614 pm_runtime_disable(gi2c->se.dev); in geni_i2c_remove()
623 disable_irq(gi2c->irq); in geni_i2c_runtime_suspend()
624 ret = geni_se_resources_off(&gi2c->se); in geni_i2c_runtime_suspend()
626 enable_irq(gi2c->irq); in geni_i2c_runtime_suspend()
630 gi2c->suspended = 1; in geni_i2c_runtime_suspend()
641 ret = geni_se_resources_on(&gi2c->se); in geni_i2c_runtime_resume()
645 enable_irq(gi2c->irq); in geni_i2c_runtime_resume()
646 gi2c->suspended = 0; in geni_i2c_runtime_resume()
654 if (!gi2c->suspended) { in geni_i2c_suspend_noirq()
670 { .compatible = "qcom,geni-i2c" },
687 MODULE_DESCRIPTION("I2C Controller Driver for GENI based QUP cores");