Lines Matching +full:mbox +full:-
1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2020-2022 Microchip Corporation. All rights reserved.
43 #define SCB_CTRL_MASK GENMASK(SCB_CTRL_POS + SCB_MASK_WIDTH - 1, SCB_CTRL_POS)
60 #define SCB_STATUS_MASK GENMASK(SCB_STATUS_POS + SCB_MASK_WIDTH - 1, SCB_STATUS_POS)
74 static bool mpfs_mbox_busy(struct mpfs_mbox *mbox) in mpfs_mbox_busy() argument
78 status = readl_relaxed(mbox->ctrl_base + SERVICES_SR_OFFSET); in mpfs_mbox_busy()
85 struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv; in mpfs_mbox_last_tx_done() local
86 struct mpfs_mss_response *response = mbox->response; in mpfs_mbox_last_tx_done()
89 if (mpfs_mbox_busy(mbox)) in mpfs_mbox_last_tx_done()
98 val = readl_relaxed(mbox->ctrl_base + SERVICES_SR_OFFSET); in mpfs_mbox_last_tx_done()
99 response->resp_status = (val & SCB_STATUS_MASK) >> SCB_STATUS_POS; in mpfs_mbox_last_tx_done()
106 struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv; in mpfs_mbox_send_data() local
112 mbox->response = msg->response; in mpfs_mbox_send_data()
113 mbox->resp_offset = msg->resp_offset; in mpfs_mbox_send_data()
115 if (mpfs_mbox_busy(mbox)) in mpfs_mbox_send_data()
116 return -EBUSY; in mpfs_mbox_send_data()
118 if (msg->cmd_data_size) { in mpfs_mbox_send_data()
120 u8 extra_bits = msg->cmd_data_size & 3; in mpfs_mbox_send_data()
121 u32 *word_buf = (u32 *)msg->cmd_data; in mpfs_mbox_send_data()
123 for (index = 0; index < (msg->cmd_data_size / 4); index++) in mpfs_mbox_send_data()
125 mbox->mbox_base + msg->mbox_offset + index * 0x4); in mpfs_mbox_send_data()
128 u8 byte_off = ALIGN_DOWN(msg->cmd_data_size, 4); in mpfs_mbox_send_data()
129 u8 *byte_buf = msg->cmd_data + byte_off; in mpfs_mbox_send_data()
131 val = readl_relaxed(mbox->mbox_base + msg->mbox_offset + index * 0x4); in mpfs_mbox_send_data()
138 writel_relaxed(val, mbox->mbox_base + msg->mbox_offset + index * 0x4); in mpfs_mbox_send_data()
142 opt_sel = ((msg->mbox_offset << 7u) | (msg->cmd_opcode & 0x7fu)); in mpfs_mbox_send_data()
146 writel_relaxed(tx_trigger, mbox->ctrl_base + SERVICES_CR_OFFSET); in mpfs_mbox_send_data()
153 struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv; in mpfs_mbox_rx_data() local
154 struct mpfs_mss_response *response = mbox->response; in mpfs_mbox_rx_data()
155 u16 num_words = ALIGN((response->resp_size), (4)) / 4U; in mpfs_mbox_rx_data()
158 if (!response->resp_msg) { in mpfs_mbox_rx_data()
159 dev_err(mbox->dev, "failed to assign memory for response %d\n", -ENOMEM); in mpfs_mbox_rx_data()
168 if (mpfs_mbox_busy(mbox)) { in mpfs_mbox_rx_data()
169 dev_err(mbox->dev, "got an interrupt but system controller is busy\n"); in mpfs_mbox_rx_data()
170 response->resp_status = 0xDEAD; in mpfs_mbox_rx_data()
175 response->resp_msg[i] = in mpfs_mbox_rx_data()
176 readl_relaxed(mbox->mbox_base in mpfs_mbox_rx_data()
177 + mbox->resp_offset + i * 0x4); in mpfs_mbox_rx_data()
186 struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv; in mpfs_mbox_inbox_isr() local
188 writel_relaxed(0, mbox->int_reg); in mpfs_mbox_inbox_isr()
197 struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv; in mpfs_mbox_startup() local
200 if (!mbox) in mpfs_mbox_startup()
201 return -EINVAL; in mpfs_mbox_startup()
203 ret = devm_request_irq(mbox->dev, mbox->irq, mpfs_mbox_inbox_isr, 0, "mpfs-mailbox", chan); in mpfs_mbox_startup()
205 dev_err(mbox->dev, "failed to register mailbox interrupt:%d\n", ret); in mpfs_mbox_startup()
212 struct mpfs_mbox *mbox = (struct mpfs_mbox *)chan->con_priv; in mpfs_mbox_shutdown() local
214 devm_free_irq(mbox->dev, mbox->irq, chan); in mpfs_mbox_shutdown()
226 struct mpfs_mbox *mbox; in mpfs_mbox_probe() local
230 mbox = devm_kzalloc(&pdev->dev, sizeof(*mbox), GFP_KERNEL); in mpfs_mbox_probe()
231 if (!mbox) in mpfs_mbox_probe()
232 return -ENOMEM; in mpfs_mbox_probe()
234 mbox->ctrl_base = devm_platform_get_and_ioremap_resource(pdev, 0, ®s); in mpfs_mbox_probe()
235 if (IS_ERR(mbox->ctrl_base)) in mpfs_mbox_probe()
236 return PTR_ERR(mbox->ctrl_base); in mpfs_mbox_probe()
238 mbox->int_reg = devm_platform_get_and_ioremap_resource(pdev, 1, ®s); in mpfs_mbox_probe()
239 if (IS_ERR(mbox->int_reg)) in mpfs_mbox_probe()
240 return PTR_ERR(mbox->int_reg); in mpfs_mbox_probe()
242 mbox->mbox_base = devm_platform_get_and_ioremap_resource(pdev, 2, ®s); in mpfs_mbox_probe()
243 if (IS_ERR(mbox->mbox_base)) // account for the old dt-binding w/ 2 regs in mpfs_mbox_probe()
244 mbox->mbox_base = mbox->ctrl_base + MAILBOX_REG_OFFSET; in mpfs_mbox_probe()
246 mbox->irq = platform_get_irq(pdev, 0); in mpfs_mbox_probe()
247 if (mbox->irq < 0) in mpfs_mbox_probe()
248 return mbox->irq; in mpfs_mbox_probe()
250 mbox->dev = &pdev->dev; in mpfs_mbox_probe()
252 mbox->chans[0].con_priv = mbox; in mpfs_mbox_probe()
253 mbox->controller.dev = mbox->dev; in mpfs_mbox_probe()
254 mbox->controller.num_chans = 1; in mpfs_mbox_probe()
255 mbox->controller.chans = mbox->chans; in mpfs_mbox_probe()
256 mbox->controller.ops = &mpfs_mbox_ops; in mpfs_mbox_probe()
257 mbox->controller.txdone_poll = true; in mpfs_mbox_probe()
258 mbox->controller.txpoll_period = 10u; in mpfs_mbox_probe()
260 ret = devm_mbox_controller_register(&pdev->dev, &mbox->controller); in mpfs_mbox_probe()
262 dev_err(&pdev->dev, "Registering MPFS mailbox controller failed\n"); in mpfs_mbox_probe()
265 dev_info(&pdev->dev, "Registered MPFS mailbox controller driver\n"); in mpfs_mbox_probe()
271 {.compatible = "microchip,mpfs-mailbox", },
278 .name = "mpfs-mailbox",