Initial commit for ADAS boards support in 2.23.0

1 files changed, 107 insertions, 0 deletions

diff --git a/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0066-pci-pcie-rcar-add-regulators-support.patch b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0066-pci-pcie-rcar-add-regulators-support.patch
new file mode 100644
index 0000000..2a9a2a0
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0066-pci-pcie-rcar-add-regulators-support.patch
@@ -0,0 +1,107 @@
+From d5a3dee65f4ee9d320128bbf79df80d51aec7687 Mon Sep 17 00:00:00 2001
+From: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
+Date: Mon, 24 Jul 2017 20:22:03 +0300
+Subject: [PATCH] pci: pcie-rcar: add regulators support
+
+Add PCIE regulators
+
+Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
+---
+ drivers/pci/host/pcie-rcar.c | 54 ++++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 54 insertions(+)
+
+diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c
+index 8e24d5f88415..6994ea2ac936 100644
+--- a/drivers/pci/host/pcie-rcar.c
++++ b/drivers/pci/host/pcie-rcar.c
+@@ -16,6 +16,7 @@
+ 
+ #include <linux/clk.h>
+ #include <linux/delay.h>
++#include <linux/regulator/consumer.h>
+ #include <linux/interrupt.h>
+ #include <linux/irq.h>
+ #include <linux/irqdomain.h>
+@@ -155,6 +156,8 @@ struct rcar_pcie {
+ 	int			root_bus_nr;
+ 	struct clk		*clk;
+ 	struct clk		*bus_clk;
++	struct regulator	*pcie3v3; /* 3.3V power supply */
++	struct regulator	*pcie1v8; /* 1.8V power supply */
+ 	struct			rcar_msi msi;
+ };
+ 
+@@ -1193,6 +1196,36 @@ static int rcar_pcie_parse_request_of_pci_ranges(struct rcar_pcie *pci)
+ 	return err;
+ }
+ 
++static int rcar_pcie_set_vpcie(struct rcar_pcie *pcie)
++{
++	struct device *dev = pcie->dev;
++	int err;
++
++	if (!IS_ERR(pcie->pcie3v3)) {
++		err = regulator_enable(pcie->pcie3v3);
++		if (err) {
++			dev_err(dev, "fail to enable vpcie3v3 regulator\n");
++			goto err_out;
++		}
++	}
++
++	if (!IS_ERR(pcie->pcie1v8)) {
++		err = regulator_enable(pcie->pcie1v8);
++		if (err) {
++			dev_err(dev, "fail to enable vpcie1v8 regulator\n");
++			goto err_disable_3v3;
++		}
++	}
++
++	return 0;
++
++err_disable_3v3:
++	if (!IS_ERR(pcie->pcie3v3))
++		regulator_disable(pcie->pcie3v3);
++err_out:
++	return err;
++}
++
+ static int rcar_pcie_probe(struct platform_device *pdev)
+ {
+ 	struct device *dev = &pdev->dev;
+@@ -1209,6 +1242,26 @@ static int rcar_pcie_probe(struct platform_device *pdev)
+ 	pcie->dev = dev;
+ 	platform_set_drvdata(pdev, pcie);
+ 
++	pcie->pcie3v3 = devm_regulator_get_optional(dev, "pcie3v3");
++	if (IS_ERR(pcie->pcie3v3)) {
++		if (PTR_ERR(pcie->pcie3v3) == -EPROBE_DEFER)
++			return -EPROBE_DEFER;
++		dev_info(dev, "no pcie3v3 regulator found\n");
++	}
++
++	pcie->pcie1v8 = devm_regulator_get_optional(dev, "pcie1v8");
++	if (IS_ERR(pcie->pcie1v8)) {
++		if (PTR_ERR(pcie->pcie1v8) == -EPROBE_DEFER)
++			return -EPROBE_DEFER;
++		dev_info(dev, "no pcie1v8 regulator found\n");
++	}
++
++	err = rcar_pcie_set_vpcie(pcie);
++	if (err) {
++		dev_err(dev, "failed to set pcie regulators\n");
++		goto err_set_pcie;
++	}
++
+ 	INIT_LIST_HEAD(&pcie->resources);
+ 
+ 	rcar_pcie_parse_request_of_pci_ranges(pcie);
+@@ -1267,6 +1320,7 @@ static int rcar_pcie_probe(struct platform_device *pdev)
+ 
+ err_pm_disable:
+ 	pm_runtime_disable(dev);
++err_set_pcie:
+ 	return err;
+ }
+ 
+-- 
+2.13.0