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Commit 9a9c4cfc authored by Mohammed Javid's avatar Mohammed Javid Committed by Gerrit - the friendly Code Review server
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msm: ipa: smp2p changes for IPA driver 



Add smp2p support in ipa-driver to
communicate with modem to get ipa
reg dump.

Change-Id: Ia2a7ea319a6ff910e4bbabad736e1cc8f642a297
Acked-by: default avatarAbhishek Choubey <abchoube@qti.qualcomm.com>
Signed-off-by: default avatarSkylar Chang <chiaweic@codeaurora.org>
parent 4a79d5ff

Documentation/devicetree/bindings/platform/msm/ipa.txt

+7 −11
Original line number Diff line number Diff line
@@ -141,14 +141,12 @@ IPA SMMU sub nodes 


IPA SMP2P sub nodes



-compatible: "qcom,smp2pgpio-map-ipa-1-out" - represents the out gpio from

-compatible: "qcom,smp2p-map-ipa-1-out" - represents the out smp2p from

					      ipa driver to modem.



-compatible: "qcom,smp2pgpio-map-ipa-1-in" - represents the in gpio to

-compatible: "qcom,smp2p-map-ipa-1-in" - represents the in smp2p to

					     ipa driver from modem.



-gpios: Binding to the gpio defined in XXX-smp2p.dtsi





Example:
@@ -201,15 +199,13 @@ qcom,ipa@fd4c0000 { 
		qcom,descriptor-fifo-size = <0x300>;

	};



	/* smp2p gpio information */

	qcom,smp2pgpio_map_ipa_1_out {

		compatible = "qcom,smp2pgpio-map-ipa-1-out";

		gpios = <&smp2pgpio_ipa_1_out 0 0>;

	/* smp2p information */

	qcom,smp2p_map_ipa_1_out {

		compatible = "qcom,smp2p-map-ipa-1-out";

	};



	qcom,smp2pgpio_map_ipa_1_in {

		compatible = "qcom,smp2pgpio-map-ipa-1-in";

		gpios = <&smp2pgpio_ipa_1_in 0 0>;

	qcom,smp2p_map_ipa_1_in {

		compatible = "qcom,smp2p-map-ipa-1-in";

	};



	ipa_smmu_ap: ipa_smmu_ap {

drivers/platform/msm/ipa/ipa_api.c

+2 −2
Original line number Diff line number Diff line
@@ -2771,8 +2771,8 @@ static const struct of_device_id ipa_plat_drv_match[] = { 
	{ .compatible = "qcom,ipa-smmu-ap-cb", },

	{ .compatible = "qcom,ipa-smmu-wlan-cb", },

	{ .compatible = "qcom,ipa-smmu-uc-cb", },

	{ .compatible = "qcom,smp2pgpio-map-ipa-1-in", },

	{ .compatible = "qcom,smp2pgpio-map-ipa-1-out", },

	{ .compatible = "qcom,smp2p-map-ipa-1-in", },

	{ .compatible = "qcom,smp2p-map-ipa-1-out", },

	{}

};

drivers/platform/msm/ipa/ipa_v3/ipa.c

+30 −42
Original line number Diff line number Diff line
@@ -39,6 +39,8 @@ 
#include <linux/soc/qcom/smem.h>

#include <soc/qcom/scm.h>

#include <asm/cacheflush.h>

#include <linux/soc/qcom/smem_state.h>

#include <linux/of_irq.h>



#ifdef CONFIG_ARM64
@@ -61,6 +63,8 @@ 
#define IPA_GPIO_IN_QUERY_CLK_IDX 0

#define IPA_GPIO_OUT_CLK_RSP_CMPLT_IDX 0

#define IPA_GPIO_OUT_CLK_VOTE_IDX 1

#define IPA_SMP2P_SMEM_STATE_MASK 3





#define IPA_SUMMING_THRESHOLD (0x10)

#define IPA_PIPE_MEM_START_OFST (0x0)
@@ -4245,8 +4249,9 @@ static void ipa3_freeze_clock_vote_and_notify_modem(void) 
	if (ipa3_ctx->smp2p_info.res_sent)

		return;



	if (ipa3_ctx->smp2p_info.out_base_id == 0) {

		IPAERR("smp2p out gpio not assigned\n");

	if (IS_ERR(ipa3_ctx->smp2p_info.smem_state)) {

		IPAERR("fail to get smp2p clk resp bit %d\n",

			PTR_ERR(ipa3_ctx->smp2p_info.smem_state));

		return;

	}
@@ -4257,11 +4262,9 @@ static void ipa3_freeze_clock_vote_and_notify_modem(void) 
	else

		ipa3_ctx->smp2p_info.ipa_clk_on = true;



	gpio_set_value(ipa3_ctx->smp2p_info.out_base_id +

		IPA_GPIO_OUT_CLK_VOTE_IDX,

		ipa3_ctx->smp2p_info.ipa_clk_on);

	gpio_set_value(ipa3_ctx->smp2p_info.out_base_id +

		IPA_GPIO_OUT_CLK_RSP_CMPLT_IDX, 1);

	qcom_smem_state_update_bits(ipa3_ctx->smp2p_info.smem_state,

			BIT(IPA_SMP2P_SMEM_STATE_MASK),

			BIT(ipa3_ctx->smp2p_info.ipa_clk_on | (1<<1)));



	ipa3_ctx->smp2p_info.res_sent = true;

	IPADBG("IPA clocks are %s\n",
@@ -6250,56 +6253,42 @@ static int ipa3_smp2p_probe(struct device *dev) 
{

	struct device_node *node = dev->of_node;

	int res;

	int irq = 0;



	if (ipa3_ctx == NULL) {

		IPAERR("ipa3_ctx was not initialized\n");

		return -ENXIO;

		return -EPROBE_DEFER;

	}

	IPADBG("node->name=%s\n", node->name);

	if (strcmp("qcom,smp2pgpio_map_ipa_1_out", node->name) == 0) {

		res = of_get_gpio(node, 0);

		if (res < 0) {

			IPADBG("of_get_gpio returned %d\n", res);

			return res;

		}



		ipa3_ctx->smp2p_info.out_base_id = res;

		IPADBG("smp2p out_base_id=%d\n",

			ipa3_ctx->smp2p_info.out_base_id);

	} else if (strcmp("qcom,smp2pgpio_map_ipa_1_in", node->name) == 0) {

		int irq;



		res = of_get_gpio(node, 0);

	if (strcmp("qcom,smp2p_map_ipa_1_out", node->name) == 0) {

		if (of_find_property(node, "qcom,smem-states", NULL)) {

			ipa3_ctx->smp2p_info.smem_state =

			qcom_smem_state_get(dev, "ipa-smp2p-out",

			&ipa3_ctx->smp2p_info.smem_bit);

			if (IS_ERR(ipa3_ctx->smp2p_info.smem_state)) {

				IPAERR("fail to get smp2p clk resp bit %d\n",

				PTR_ERR(ipa3_ctx->smp2p_info.smem_state));

				return PTR_ERR(ipa3_ctx->smp2p_info.smem_state);

			}

			IPADBG("smem_bit=%d\n", ipa3_ctx->smp2p_info.smem_bit);

		}

	} else if (strcmp("qcom,smp2p_map_ipa_1_in", node->name) == 0) {

		res = irq = of_irq_get_byname(node, "ipa-smp2p-in");

		if (res < 0) {

			IPADBG("of_get_gpio returned %d\n", res);

			IPADBG("of_irq_get_byname returned %d\n", irq);

			return res;

		}



		ipa3_ctx->smp2p_info.in_base_id = res;

		IPADBG("smp2p in_base_id=%d\n",

			ipa3_ctx->smp2p_info.in_base_id);



		/* register for modem clk query */

		irq = gpio_to_irq(ipa3_ctx->smp2p_info.in_base_id +

			IPA_GPIO_IN_QUERY_CLK_IDX);

		if (irq < 0) {

			IPAERR("gpio_to_irq failed %d\n", irq);

			return -ENODEV;

		}

		ipa3_ctx->smp2p_info.in_base_id = irq;

		IPADBG("smp2p irq#=%d\n", irq);

		res = request_irq(irq,

		res = devm_request_threaded_irq(dev, irq, NULL,

			(irq_handler_t)ipa3_smp2p_modem_clk_query_isr,

			IRQF_TRIGGER_RISING, "ipa_smp2p_clk_vote", dev);

		if (res) {

			IPAERR("fail to register smp2p irq=%d\n", irq);

			return -ENODEV;

		}

		res = enable_irq_wake(ipa3_ctx->smp2p_info.in_base_id +

			IPA_GPIO_IN_QUERY_CLK_IDX);

		if (res)

			IPAERR("failed to enable irq wake\n");

	}



	return 0;

}
@@ -6339,11 +6328,10 @@ int ipa3_plat_drv_probe(struct platform_device *pdev_p, 
	}



	if (of_device_is_compatible(dev->of_node,

	    "qcom,smp2pgpio-map-ipa-1-in"))

	    "qcom,smp2p-map-ipa-1-out"))

		return ipa3_smp2p_probe(dev);



	if (of_device_is_compatible(dev->of_node,

	    "qcom,smp2pgpio-map-ipa-1-out"))

	    "qcom,smp2p-map-ipa-1-in"))

		return ipa3_smp2p_probe(dev);



	result = get_ipa_dts_configuration(pdev_p, &ipa3_res);

drivers/platform/msm/ipa/ipa_v3/ipa_i.h

+2 −0
Original line number Diff line number Diff line
@@ -1092,6 +1092,8 @@ struct ipa3_smp2p_info { 
	u32 in_base_id;

	bool ipa_clk_on;

	bool res_sent;

	unsigned int smem_bit;

	struct qcom_smem_state *smem_state;

};



/**