[RFC v7 net-next 08/13] phy: ocelot-serdes: add ability to be used in mfd configuration
From: Colin Foster <colin.foster@in-advantage.com>
Date: 2022-03-07 02:13:42
Also in:
linux-arm-kernel, linux-gpio, linux-phy, lkml
Subsystem:
generic phy framework, the rest · Maintainers:
Vinod Koul, Linus Torvalds
When ocelot-serdes is used in an MFD configuration, it might need to get regmaps from an mfd instead of syscon. Add this ability to be used in either configuration. Signed-off-by: Colin Foster <colin.foster@in-advantage.com> --- drivers/phy/mscc/phy-ocelot-serdes.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/phy/mscc/phy-ocelot-serdes.c b/drivers/phy/mscc/phy-ocelot-serdes.c
index 76f596365176..ae1284e356e7 100644
--- a/drivers/phy/mscc/phy-ocelot-serdes.c
+++ b/drivers/phy/mscc/phy-ocelot-serdes.c@@ -15,6 +15,7 @@ #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/regmap.h> +#include <soc/mscc/ocelot.h> #include <soc/mscc/ocelot_hsio.h> #include <dt-bindings/phy/phy-ocelot-serdes.h>
@@ -492,8 +493,10 @@ static int serdes_phy_create(struct serdes_ctrl *ctrl, u8 idx, struct phy **phy) static int serdes_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct phy_provider *provider; struct serdes_ctrl *ctrl; + struct resource *res; unsigned int i; int ret;
@@ -502,7 +505,15 @@ static int serdes_probe(struct platform_device *pdev) return -ENOMEM; ctrl->dev = &pdev->dev; + ctrl->regs = syscon_node_to_regmap(pdev->dev.parent->of_node); + if (IS_ERR(ctrl->regs)) { + /* Fall back to using IORESOURCE_REG, if possible */ + res = platform_get_resource(pdev, IORESOURCE_REG, 0); + if (!res) + ctrl->regs = ocelot_get_regmap_from_resource(dev, res); + } + if (IS_ERR(ctrl->regs)) return PTR_ERR(ctrl->regs);
--
2.25.1