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Commit c7153676 authored by Vipin Deep Kaur's avatar Vipin Deep Kaur
Browse files

dmaengine: gpi: Add support to make GPI driver GKI compliant 



Add support to make GPI driver a DLKM.

Change-Id: I61f5b4b97a7827b4591f377eb59e6fe4a8f95645
Signed-off-by: default avatarVipin Deep Kaur <vkaur@codeaurora.org>
parent 609f038c

drivers/dma/qcom/gpi.c

+43 −3
Original line number Diff line number Diff line
@@ -92,7 +92,7 @@ enum EV_PRIORITY { 


#define GPI_DMA_DRV_NAME "gpi_dma"

#define DEFAULT_KLOG_LVL (LOG_LVL_CRITICAL)

#ifdef CONFIG_MSM_GPI_DMA_DEBUG

#if IS_ENABLED(CONFIG_MSM_GPI_DMA_DEBUG)

#define DEFAULT_IPC_LOG_LVL (LOG_LVL_VERBOSE)

#define IPC_LOG_PAGES (40)

#define GPI_DBG_LOG_SIZE (SZ_1K) /* size must be power of 2 */
@@ -627,7 +627,7 @@ static inline void *to_virtual(const struct gpi_ring *const ring, 
	return ring->base + (addr - ring->phys_addr);

}



#ifdef CONFIG_MSM_GPI_DMA_DEBUG

#if IS_ENABLED(CONFIG_MSM_GPI_DMA_DEBUG)

static inline u32 gpi_read_reg(struct gpii *gpii, void __iomem *addr)

{

	u64 time = sched_clock();
@@ -2993,6 +2993,38 @@ static int gpi_probe(struct platform_device *pdev) 
	return ret;

}



static int gpi_remove(struct platform_device *pdev)

{

	struct gpi_dev *gpi_dev = platform_get_drvdata(pdev);

	int i;



	of_dma_controller_free(gpi_dev->dev->of_node);

	dma_async_device_unregister(&gpi_dev->dma_device);



	for (i = 0; i < gpi_dev->max_gpii; i++) {

		struct gpii *gpii = &gpi_dev->gpiis[i];

		int chan;



		if (!((1 << i) & gpi_dev->gpii_mask))

			continue;



		for (chan = 0; chan < MAX_CHANNELS_PER_GPII; chan++) {

			struct gpii_chan *gpii_chan = &gpii->gpii_chan[chan];



			gpi_free_chan_resources(&gpii_chan->vc.chan);

		}



		if (gpii->ilctxt)

			ipc_log_context_destroy(gpii->ilctxt);

	}



	if (gpi_dev->ilctxt)

		ipc_log_context_destroy(gpi_dev->ilctxt);



	debugfs_remove(pdentry);

	return 0;

}



static const struct of_device_id gpi_of_match[] = {

	{ .compatible = "qcom,gpi-dma" },

	{}
@@ -3001,6 +3033,7 @@ MODULE_DEVICE_TABLE(of, gpi_of_match); 


static struct platform_driver gpi_driver = {

	.probe = gpi_probe,

	.remove = gpi_remove,

	.driver = {

		.name = GPI_DMA_DRV_NAME,

		.of_match_table = gpi_of_match,
@@ -3012,7 +3045,14 @@ static int __init gpi_init(void) 
	pdentry = debugfs_create_dir(GPI_DMA_DRV_NAME, NULL);

	return platform_driver_register(&gpi_driver);

}

module_init(gpi_init)



static void __exit gpi_exit(void)

{

	platform_driver_unregister(&gpi_driver);

}



module_init(gpi_init);

module_exit(gpi_exit);



MODULE_DESCRIPTION("QCOM GPI DMA engine driver");

MODULE_LICENSE("GPL v2");