diff mbox series

[3/8] remoteproc: qcom_q6v5_mss: Add modem support on MSM8226

Message ID 20230112202612.791455-4-matti.lehtimaki@gmail.com (mailing list archive)
State New, archived
Headers show
Series Modem support for MSM8226 | expand

Commit Message

Matti Lehtimäki Jan. 12, 2023, 8:26 p.m. UTC 
From: Luca Weiss <luca@z3ntu.xyz>

Add support for the external power block headswitch register needed by
MSM8226 and some other qcom platforms.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Co-developed-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
---
 drivers/remoteproc/qcom_q6v5_mss.c | 123 +++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)

Comments

Stephan Gerhold Jan. 12, 2023, 10:14 p.m. UTC | #1 
On Thu, Jan 12, 2023 at 10:26:06PM +0200, Matti Lehtimäki wrote:
> From: Luca Weiss <luca@z3ntu.xyz>
> 
> Add support for the external power block headswitch register needed by
> MSM8226 and some other qcom platforms.
> 
> Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
> Co-developed-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> ---
>  drivers/remoteproc/qcom_q6v5_mss.c | 123 +++++++++++++++++++++++++++++
>  1 file changed, 123 insertions(+)
> 
> diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
> index 745627a36bcf..0dff7e811736 100644
> --- a/drivers/remoteproc/qcom_q6v5_mss.c
> +++ b/drivers/remoteproc/qcom_q6v5_mss.c
> [...]
> @@ -2453,13 +2529,60 @@ static const struct rproc_hexagon_res msm8974_mss = {
>  	.has_mba_logs = false,
>  	.has_spare_reg = false,
>  	.has_qaccept_regs = false,
> +	.has_ext_bhs_reg = false,
>  	.has_ext_cntl_regs = false,
>  	.has_vq6 = false,
>  	.version = MSS_MSM8974,
>  };

If you change MX in the DT schema for MSM8974 like I suggested please
also add a patch here that moves mx from "fallback_proxy_supply" to
"proxy_supply". This is also a fix for my patch back then
(Fixes: 8750cf39239 ("remoteproc: qcom_q6v5_mss: Allow replacing
regulators with power domains")).

>  
> +static const struct rproc_hexagon_res msm8226_mss = {
> +	.hexagon_mba_image = "mba.b00",
> +	.proxy_supply = (struct qcom_mss_reg_res[]) {
> +		{
> +			.supply = "pll",
> +			.uA = 100000,
> +		},
> +		{
> +			.supply = "mx",
> +			.uV = 1050000,
> +		},
> +		{}
> +	},
> +	.fallback_proxy_supply = (struct qcom_mss_reg_res[]) {
> +		{
> +			.supply = "cx",
> +			.uA = 100000,
> +		},
> +		{}
> +	},

I assume you're immediately going to start with CX represented as power
domain on 8226, so you don't need the fallback here for using it as
regulator on old DTBs.

Thanks,
Stephan
diff mbox series

Patch

diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index 745627a36bcf..0dff7e811736 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -131,6 +131,11 @@ 
 #define QDSP6SS_BOOT_CMD                0x404
 #define BOOT_FSM_TIMEOUT                10000
 
+/* External power block headswitch */
+#define EXTERNAL_BHS_ON			BIT(0)
+#define EXTERNAL_BHS_STATUS		BIT(4)
+#define EXTERNAL_BHS_TIMEOUT_US		50
+
 struct reg_info {
 	struct regulator *reg;
 	int uV;
@@ -158,6 +163,7 @@  struct rproc_hexagon_res {
 	bool has_mba_logs;
 	bool has_spare_reg;
 	bool has_qaccept_regs;
+	bool has_ext_bhs_reg;
 	bool has_ext_cntl_regs;
 	bool has_vq6;
 };
@@ -177,6 +183,7 @@  struct q6v5 {
 	u32 halt_nc;
 	u32 halt_vq6;
 	u32 conn_box;
+	u32 ext_bhs;
 
 	u32 qaccept_mdm;
 	u32 qaccept_cx;
@@ -230,6 +237,7 @@  struct q6v5 {
 	bool has_mba_logs;
 	bool has_spare_reg;
 	bool has_qaccept_regs;
+	bool has_ext_bhs_reg;
 	bool has_ext_cntl_regs;
 	bool has_vq6;
 	int mpss_perm;
@@ -239,6 +247,7 @@  struct q6v5 {
 };
 
 enum {
+	MSS_MSM8226,
 	MSS_MSM8909,
 	MSS_MSM8916,
 	MSS_MSM8953,
@@ -1738,6 +1747,23 @@  static int q6v5_init_mem(struct q6v5 *qproc, struct platform_device *pdev)
 		qproc->qaccept_axi = args.args[2];
 	}
 
+	if (qproc->has_ext_bhs_reg) {
+		ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
+						       "qcom,ext-bhs-reg",
+						       1, 0, &args);
+		if (ret < 0) {
+			dev_err(&pdev->dev, "failed to parse ext-bhs-reg index 0\n");
+			return -EINVAL;
+		}
+
+		qproc->conn_map = syscon_node_to_regmap(args.np);
+		of_node_put(args.np);
+		if (IS_ERR(qproc->conn_map))
+			return PTR_ERR(qproc->conn_map);
+
+		qproc->ext_bhs = args.args[0];
+	}
+
 	if (qproc->has_ext_cntl_regs) {
 		ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
 						       "qcom,ext-regs",
@@ -1863,6 +1889,36 @@  static void q6v5_pds_detach(struct q6v5 *qproc, struct device **pds,
 		dev_pm_domain_detach(pds[i], false);
 }
 
+static int q6v5_external_bhs_enable(struct q6v5 *qproc)
+{
+	u32 val;
+	int ret = 0;
+
+	/*
+	 * Enable external power block headswitch and wait for it to
+	 * stabilize
+	 */
+	regmap_update_bits(qproc->conn_map, qproc->ext_bhs,
+			   EXTERNAL_BHS_ON, 1);
+
+	ret = regmap_read_poll_timeout(qproc->conn_map, qproc->ext_bhs,
+				       val, val & EXTERNAL_BHS_STATUS,
+				       1, EXTERNAL_BHS_TIMEOUT_US);
+
+	if (ret) {
+		dev_err(qproc->dev, "External BHS timed out\n");
+		ret = -ETIMEDOUT;
+	}
+
+	return ret;
+}
+
+static void q6v5_external_bhs_disable(struct q6v5 *qproc)
+{
+	regmap_update_bits(qproc->conn_map, qproc->ext_bhs,
+			   EXTERNAL_BHS_ON, 0);
+}
+
 static int q6v5_init_reset(struct q6v5 *qproc)
 {
 	qproc->mss_restart = devm_reset_control_get_exclusive(qproc->dev,
@@ -1984,6 +2040,7 @@  static int q6v5_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, qproc);
 
 	qproc->has_qaccept_regs = desc->has_qaccept_regs;
+	qproc->has_ext_bhs_reg = desc->has_ext_bhs_reg;
 	qproc->has_ext_cntl_regs = desc->has_ext_cntl_regs;
 	qproc->has_vq6 = desc->has_vq6;
 	qproc->has_spare_reg = desc->has_spare_reg;
@@ -2054,6 +2111,14 @@  static int q6v5_probe(struct platform_device *pdev)
 		qproc->proxy_pd_count = ret;
 	}
 
+	if (qproc->has_ext_bhs_reg) {
+		ret = q6v5_external_bhs_enable(qproc);
+		if (ret < 0) {
+			dev_err(&pdev->dev, "Failed to enable external BHS.\n");
+			goto detach_proxy_pds;
+		}
+	}
+
 	qproc->has_alt_reset = desc->has_alt_reset;
 	ret = q6v5_init_reset(qproc);
 	if (ret)
@@ -2118,6 +2183,9 @@  static int q6v5_remove(struct platform_device *pdev)
 	qcom_remove_smd_subdev(rproc, &qproc->smd_subdev);
 	qcom_remove_glink_subdev(rproc, &qproc->glink_subdev);
 
+	if (qproc->has_ext_bhs_reg)
+		q6v5_external_bhs_disable(qproc);
+
 	q6v5_pds_detach(qproc, qproc->proxy_pds, qproc->proxy_pd_count);
 
 	rproc_free(rproc);
@@ -2153,6 +2221,7 @@  static const struct rproc_hexagon_res sc7180_mss = {
 	.has_mba_logs = true,
 	.has_spare_reg = true,
 	.has_qaccept_regs = false,
+	.has_ext_bhs_reg = false,
 	.has_ext_cntl_regs = false,
 	.has_vq6 = false,
 	.version = MSS_SC7180,
@@ -2181,6 +2250,7 @@  static const struct rproc_hexagon_res sc7280_mss = {
 	.has_mba_logs = true,
 	.has_spare_reg = false,
 	.has_qaccept_regs = true,
+	.has_ext_bhs_reg = false,
 	.has_ext_cntl_regs = true,
 	.has_vq6 = true,
 	.version = MSS_SC7280,
@@ -2216,6 +2286,7 @@  static const struct rproc_hexagon_res sdm845_mss = {
 	.has_mba_logs = false,
 	.has_spare_reg = false,
 	.has_qaccept_regs = false,
+	.has_ext_bhs_reg = false,
 	.has_ext_cntl_regs = false,
 	.has_vq6 = false,
 	.version = MSS_SDM845,
@@ -2247,6 +2318,7 @@  static const struct rproc_hexagon_res msm8998_mss = {
 	.has_mba_logs = false,
 	.has_spare_reg = false,
 	.has_qaccept_regs = false,
+	.has_ext_bhs_reg = false,
 	.has_ext_cntl_regs = false,
 	.has_vq6 = false,
 	.version = MSS_MSM8998,
@@ -2286,6 +2358,7 @@  static const struct rproc_hexagon_res msm8996_mss = {
 	.has_mba_logs = false,
 	.has_spare_reg = false,
 	.has_qaccept_regs = false,
+	.has_ext_bhs_reg = false,
 	.has_ext_cntl_regs = false,
 	.has_vq6 = false,
 	.version = MSS_MSM8996,
@@ -2320,6 +2393,7 @@  static const struct rproc_hexagon_res msm8909_mss = {
 	.has_mba_logs = false,
 	.has_spare_reg = false,
 	.has_qaccept_regs = false,
+	.has_ext_bhs_reg = false,
 	.has_ext_cntl_regs = false,
 	.has_vq6 = false,
 	.version = MSS_MSM8909,
@@ -2365,6 +2439,7 @@  static const struct rproc_hexagon_res msm8916_mss = {
 	.has_mba_logs = false,
 	.has_spare_reg = false,
 	.has_qaccept_regs = false,
+	.has_ext_bhs_reg = false,
 	.has_ext_cntl_regs = false,
 	.has_vq6 = false,
 	.version = MSS_MSM8916,
@@ -2400,6 +2475,7 @@  static const struct rproc_hexagon_res msm8953_mss = {
 	.has_mba_logs = false,
 	.has_spare_reg = false,
 	.has_qaccept_regs = false,
+	.has_ext_bhs_reg = false,
 	.has_ext_cntl_regs = false,
 	.has_vq6 = false,
 	.version = MSS_MSM8953,
@@ -2453,13 +2529,60 @@  static const struct rproc_hexagon_res msm8974_mss = {
 	.has_mba_logs = false,
 	.has_spare_reg = false,
 	.has_qaccept_regs = false,
+	.has_ext_bhs_reg = false,
 	.has_ext_cntl_regs = false,
 	.has_vq6 = false,
 	.version = MSS_MSM8974,
 };
 
+static const struct rproc_hexagon_res msm8226_mss = {
+	.hexagon_mba_image = "mba.b00",
+	.proxy_supply = (struct qcom_mss_reg_res[]) {
+		{
+			.supply = "pll",
+			.uA = 100000,
+		},
+		{
+			.supply = "mx",
+			.uV = 1050000,
+		},
+		{}
+	},
+	.fallback_proxy_supply = (struct qcom_mss_reg_res[]) {
+		{
+			.supply = "cx",
+			.uA = 100000,
+		},
+		{}
+	},
+	.proxy_clk_names = (char*[]){
+		"xo",
+		NULL
+	},
+	.active_clk_names = (char*[]){
+		"iface",
+		"bus",
+		"mem",
+		NULL
+	},
+	.proxy_pd_names = (char*[]){
+		"cx",
+		NULL
+	},
+	.need_mem_protection = false,
+	.has_alt_reset = false,
+	.has_mba_logs = false,
+	.has_spare_reg = false,
+	.has_qaccept_regs = false,
+	.has_ext_bhs_reg = true,
+	.has_ext_cntl_regs = false,
+	.has_vq6 = false,
+	.version = MSS_MSM8226,
+};
+
 static const struct of_device_id q6v5_of_match[] = {
 	{ .compatible = "qcom,q6v5-pil", .data = &msm8916_mss},
+	{ .compatible = "qcom,msm8226-mss-pil", .data = &msm8226_mss},
 	{ .compatible = "qcom,msm8909-mss-pil", .data = &msm8909_mss},
 	{ .compatible = "qcom,msm8916-mss-pil", .data = &msm8916_mss},
 	{ .compatible = "qcom,msm8953-mss-pil", .data = &msm8953_mss},