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Commit f43669de authored by Archit Taneja's avatar Archit Taneja Committed by Vinod Koul
Browse files

dmaengine: qcom_bam_dma: Add BAM v1.3.0 support 



We currently have register offset information only for BAM IPs with revision
1.4.0. We add register offset table entries for the legacy (v1.3.0) version
of BAM IPs found on SoCs like APQ8064 and MSM8960.

The register offset table pointers are stored in DT data corresponding to the
BAM IP version specified in the compatible string.

Reviewed-by: default avatarKumar Gala <galak@codeaurora.org>
Reviewed-by: default avatarAndy Gross <agross@codeaurora.org>
Signed-off-by: default avatarArchit Taneja <architt@codeaurora.org>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent fb93f520

drivers/dma/qcom_bam_dma.c

+50 −8
Original line number Diff line number Diff line
@@ -113,7 +113,36 @@ struct reg_offset_data { 
	unsigned int pipe_mult, evnt_mult, ee_mult;

};



static const struct reg_offset_data reg_info[] = {

static const struct reg_offset_data bam_v1_3_reg_info[] = {

	[BAM_CTRL]		= { 0x0F80, 0x00, 0x00, 0x00 },

	[BAM_REVISION]		= { 0x0F84, 0x00, 0x00, 0x00 },

	[BAM_NUM_PIPES]		= { 0x0FBC, 0x00, 0x00, 0x00 },

	[BAM_DESC_CNT_TRSHLD]	= { 0x0F88, 0x00, 0x00, 0x00 },

	[BAM_IRQ_SRCS]		= { 0x0F8C, 0x00, 0x00, 0x00 },

	[BAM_IRQ_SRCS_MSK]	= { 0x0F90, 0x00, 0x00, 0x00 },

	[BAM_IRQ_SRCS_UNMASKED]	= { 0x0FB0, 0x00, 0x00, 0x00 },

	[BAM_IRQ_STTS]		= { 0x0F94, 0x00, 0x00, 0x00 },

	[BAM_IRQ_CLR]		= { 0x0F98, 0x00, 0x00, 0x00 },

	[BAM_IRQ_EN]		= { 0x0F9C, 0x00, 0x00, 0x00 },

	[BAM_CNFG_BITS]		= { 0x0FFC, 0x00, 0x00, 0x00 },

	[BAM_IRQ_SRCS_EE]	= { 0x1800, 0x00, 0x00, 0x80 },

	[BAM_IRQ_SRCS_MSK_EE]	= { 0x1804, 0x00, 0x00, 0x80 },

	[BAM_P_CTRL]		= { 0x0000, 0x80, 0x00, 0x00 },

	[BAM_P_RST]		= { 0x0004, 0x80, 0x00, 0x00 },

	[BAM_P_HALT]		= { 0x0008, 0x80, 0x00, 0x00 },

	[BAM_P_IRQ_STTS]	= { 0x0010, 0x80, 0x00, 0x00 },

	[BAM_P_IRQ_CLR]		= { 0x0014, 0x80, 0x00, 0x00 },

	[BAM_P_IRQ_EN]		= { 0x0018, 0x80, 0x00, 0x00 },

	[BAM_P_EVNT_DEST_ADDR]	= { 0x102C, 0x00, 0x40, 0x00 },

	[BAM_P_EVNT_REG]	= { 0x1018, 0x00, 0x40, 0x00 },

	[BAM_P_SW_OFSTS]	= { 0x1000, 0x00, 0x40, 0x00 },

	[BAM_P_DATA_FIFO_ADDR]	= { 0x1024, 0x00, 0x40, 0x00 },

	[BAM_P_DESC_FIFO_ADDR]	= { 0x101C, 0x00, 0x40, 0x00 },

	[BAM_P_EVNT_GEN_TRSHLD]	= { 0x1028, 0x00, 0x40, 0x00 },

	[BAM_P_FIFO_SIZES]	= { 0x1020, 0x00, 0x40, 0x00 },

};



static const struct reg_offset_data bam_v1_4_reg_info[] = {

	[BAM_CTRL]		= { 0x0000, 0x00, 0x00, 0x00 },

	[BAM_REVISION]		= { 0x0004, 0x00, 0x00, 0x00 },

	[BAM_NUM_PIPES]		= { 0x003C, 0x00, 0x00, 0x00 },
@@ -330,6 +359,8 @@ struct bam_device { 
	/* execution environment ID, from DT */

	u32 ee;



	const struct reg_offset_data *layout;



	struct clk *bamclk;

	int irq;
@@ -346,7 +377,7 @@ struct bam_device { 
static inline void __iomem *bam_addr(struct bam_device *bdev, u32 pipe,

		enum bam_reg reg)

{

	const struct reg_offset_data r = reg_info[reg];

	const struct reg_offset_data r = bdev->layout[reg];



	return bdev->regs + r.base_offset +

		r.pipe_mult * pipe +
@@ -1019,9 +1050,18 @@ static void bam_channel_init(struct bam_device *bdev, struct bam_chan *bchan, 
	bchan->vc.desc_free = bam_dma_free_desc;

}



static const struct of_device_id bam_of_match[] = {

	{ .compatible = "qcom,bam-v1.3.0", .data = &bam_v1_3_reg_info },

	{ .compatible = "qcom,bam-v1.4.0", .data = &bam_v1_4_reg_info },

	{}

};



MODULE_DEVICE_TABLE(of, bam_of_match);



static int bam_dma_probe(struct platform_device *pdev)

{

	struct bam_device *bdev;

	const struct of_device_id *match;

	struct resource *iores;

	int ret, i;
@@ -1031,6 +1071,14 @@ static int bam_dma_probe(struct platform_device *pdev) 


	bdev->dev = &pdev->dev;



	match = of_match_node(bam_of_match, pdev->dev.of_node);

	if (!match) {

		dev_err(&pdev->dev, "Unsupported BAM module\n");

		return -ENODEV;

	}



	bdev->layout = match->data;



	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	bdev->regs = devm_ioremap_resource(&pdev->dev, iores);

	if (IS_ERR(bdev->regs))
@@ -1154,12 +1202,6 @@ static int bam_dma_remove(struct platform_device *pdev) 
	return 0;

}



static const struct of_device_id bam_of_match[] = {

	{ .compatible = "qcom,bam-v1.4.0", },

	{}

};

MODULE_DEVICE_TABLE(of, bam_of_match);



static struct platform_driver bam_dma_driver = {

	.probe = bam_dma_probe,

	.remove = bam_dma_remove,