15 #include <linux/firmware/samsung/exynos-acpm-protocol.h>
31 #include "exynos-acpm.h"
32 #include "exynos-acpm-pmic.h"
89  * struct acpm_queue - exynos acpm queue.
120  * @acpm:	pointer to driver private data.
142 	struct acpm_info *acpm;  member
162  * @chans:	pointer to the ACPM channel parameters retrieved from SRAM.
163  * @dev:	pointer to the exynos-acpm device.
189  * @achan:	ACPM channel info.
212  * @achan:	ACPM channel info.
294  * @achan:	ACPM channel info.
302 	struct device *dev = achan->acpm->dev;  in acpm_dequeue_by_polling()
331  * @achan:		ACPM channel info.
347 		dev_err(achan->acpm->dev, "RX front can not keep up with TX front.\n");  in acpm_wait_for_queue_slots()
354 		dev_err(achan->acpm->dev, "TX queue is full.\n");  in acpm_wait_for_queue_slots()
362  * @achan:	ACPM channel info.
393  * @achan:	ACPM channel info.
407  * @handle:	pointer to the acpm handle.
414 	struct acpm_info *acpm = handle_to_acpm_info(handle);  in acpm_do_xfer()  local
420 	if (xfer->acpm_chan_id >= acpm->num_chans)  in acpm_do_xfer()
423 	achan = &acpm->chans[xfer->acpm_chan_id];  in acpm_do_xfer()
429 		dev_err(achan->acpm->dev, "Interrupt mode not supported\n");  in acpm_do_xfer()
466  * @achan:	ACPM channel info.
472 	void __iomem *base = achan->acpm->sram_base;  in acpm_chan_shmem_get_params()
489 	dev_vdbg(achan->acpm->dev, "ID = %d poll = %d, mlen = %d, qlen = %d\n",  in acpm_chan_shmem_get_params()
494  * acpm_achan_alloc_cmds() - allocate buffers for retrieving data from the ACPM
496  * @achan:	ACPM channel info.
502 	struct device *dev = achan->acpm->dev;  in acpm_achan_alloc_cmds()
526  * @acpm:	pointer to driver data.
528 static void acpm_free_mbox_chans(struct acpm_info *acpm)  in acpm_free_mbox_chans()  argument
532 	for (i = 0; i < acpm->num_chans; i++)  in acpm_free_mbox_chans()
533 		if (!IS_ERR_OR_NULL(acpm->chans[i].chan))  in acpm_free_mbox_chans()
534 			mbox_free_channel(acpm->chans[i].chan);  in acpm_free_mbox_chans()
540  * @acpm:	pointer to driver data.
544 static int acpm_channels_init(struct acpm_info *acpm)  in acpm_channels_init()  argument
546 	struct acpm_shmem __iomem *shmem = acpm->shmem;  in acpm_channels_init()
548 	struct device *dev = acpm->dev;  in acpm_channels_init()
551 	acpm->num_chans = readl(&shmem->num_chans);  in acpm_channels_init()
552 	acpm->chans = devm_kcalloc(dev, acpm->num_chans, sizeof(*acpm->chans),  in acpm_channels_init()
554 	if (!acpm->chans)  in acpm_channels_init()
557 	chans_shmem = acpm->sram_base + readl(&shmem->chans);  in acpm_channels_init()
559 	for (i = 0; i < acpm->num_chans; i++) {  in acpm_channels_init()
561 		struct acpm_chan *achan = &acpm->chans[i];  in acpm_channels_init()
564 		achan->acpm = acpm;  in acpm_channels_init()
579 			acpm_free_mbox_chans(acpm);  in acpm_channels_init()
589  * @acpm:	pointer to the driver data.
591 static void acpm_setup_ops(struct acpm_info *acpm)  in acpm_setup_ops()  argument
593 	struct acpm_pmic_ops *pmic_ops = &acpm->handle.ops.pmic_ops;  in acpm_setup_ops()
607 	struct acpm_info *acpm;  in acpm_probe()  local
612 	acpm = devm_kzalloc(dev, sizeof(*acpm), GFP_KERNEL);  in acpm_probe()
613 	if (!acpm)  in acpm_probe()
624 	acpm->sram_base = devm_ioremap(dev, res.start, size);  in acpm_probe()
625 	if (!acpm->sram_base)  in acpm_probe()
634 	acpm->shmem = acpm->sram_base + match_data->initdata_base;  in acpm_probe()
635 	acpm->dev = dev;  in acpm_probe()
637 	ret = acpm_channels_init(acpm);  in acpm_probe()
641 	acpm_setup_ops(acpm);  in acpm_probe()
643 	platform_set_drvdata(pdev, acpm);  in acpm_probe()
654 	struct acpm_info *acpm = handle_to_acpm_info(handle);  in acpm_handle_put()  local
655 	struct device *dev = acpm->dev;  in acpm_handle_put()
673  * acpm_get_by_node() - get the ACPM handle using node pointer.
674  * @dev:	device pointer requesting ACPM handle.
675  * @np:		ACPM device tree node.
684 	struct acpm_info *acpm;  in acpm_get_by_node()  local
690 	acpm = platform_get_drvdata(pdev);  in acpm_get_by_node()
691 	if (!acpm) {  in acpm_get_by_node()
711 	return &acpm->handle;  in acpm_get_by_node()
716  * @dev: device pointer requesting ACPM handle.
717  * @np:  ACPM device tree node.
748 		.compatible = "google,gs101-acpm-ipc",
758 		.name = "exynos-acpm-protocol",
765 MODULE_DESCRIPTION("Samsung Exynos ACPM mailbox protocol driver");