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Commit 59e8c622 authored by Alok Chauhan's avatar Alok Chauhan
Browse files

i3c: master-qcom-geni: Enable IBI controller in legacy mode 



Enable IBI controller in legacy mode to make QUPv3 receives
correct sda/scl via IBI mux.

Change-Id: I90fa5a9ebaa009c09d2c66d049180ec31b0aeed7
Signed-off-by: default avatarAlok Chauhan <alokc@codeaurora.org>
parent 10426ae5

drivers/i3c/master/i3c-master-qcom-geni.c

+12 −0
Original line number Diff line number Diff line
@@ -116,6 +116,7 @@ enum i3c_trans_dir { 


struct geni_se {

	void __iomem *base;

	void __iomem *ibi_base;

	struct device *dev;

	struct se_geni_rsc i3c_rsc;

};
@@ -298,6 +299,7 @@ static void qcom_geni_i3c_conf(struct geni_i3c_dev *gi3c) 
	writel_relaxed(val, gi3c->se.base + SE_GENI_HW_IRQ_CMD_PARAM_0);



	writel_relaxed(1, gi3c->se.base + SE_GENI_HW_IRQ_EN);

	geni_write_reg(1, gi3c->se.ibi_base, 0x2C);

}



static void geni_i3c_err(struct geni_i3c_dev *gi3c, int err)
@@ -1108,6 +1110,7 @@ static int i3c_geni_rsrcs_init(struct geni_i3c_dev *gi3c, 
	struct device_node *wrapper_ph_node;

	int ret;



	/* base register address */

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!res)

		return -EINVAL;
@@ -1116,6 +1119,15 @@ static int i3c_geni_rsrcs_init(struct geni_i3c_dev *gi3c, 
	if (IS_ERR(gi3c->se.base))

		return PTR_ERR(gi3c->se.base);



	/* IBI register address */

	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);

	if (!res)

		return -EINVAL;



	gi3c->se.ibi_base = devm_ioremap_resource(&pdev->dev, res);

	if (IS_ERR(gi3c->se.ibi_base))

		return PTR_ERR(gi3c->se.ibi_base);



	wrapper_ph_node = of_parse_phandle(pdev->dev.of_node,

			"qcom,wrapper-core", 0);

	if (IS_ERR_OR_NULL(wrapper_ph_node)) {

drivers/platform/msm/qcom-geni-se.c

+3 −0
Original line number Diff line number Diff line
@@ -338,6 +338,9 @@ static int geni_se_select_fifo_mode(void __iomem *base) 
	geni_write_reg(common_geni_m_irq_en, base, SE_GENI_M_IRQ_EN);

	geni_write_reg(common_geni_s_irq_en, base, SE_GENI_S_IRQ_EN);

	geni_write_reg(geni_dma_mode, base, SE_GENI_DMA_MODE_EN);



	if (proto == I3C)

		geni_write_reg(0x3, base, GENI_I3C_IBI_LEGACY);

	return 0;

}

include/linux/qcom-geni-se.h

+5 −0
Original line number Diff line number Diff line
@@ -116,6 +116,7 @@ struct se_geni_rsc { 
#define SE_GENI_IOS			(0x908)

#define SE_GENI_M_GP_LENGTH		(0x910)

#define SE_GENI_S_GP_LENGTH		(0x914)

#define GENI_I3C_IBI_LEGACY		(0xA9c)

#define SE_GSI_EVENT_EN			(0xE18)

#define SE_IRQ_EN			(0xE1C)

#define SE_HW_PARAM_0			(0xE24)
@@ -259,6 +260,10 @@ struct se_geni_rsc { 
#define GENI_M_EVENT_EN		(BIT(2))

#define GENI_S_EVENT_EN		(BIT(3))



/* GENI_I3C_IBI_LEGACY fields */

#define I3C_IBI_LEGACY_EN	(BIT(0))

#define I3C_IBI_LEGACY_PORTS_EN	(BIT(1))



/* SE_GENI_IOS fields */

#define IO2_DATA_IN		(BIT(1))

#define RX_DATA_IN		(BIT(0))