| Message ID | 20230208164203.378153-6-clement.leger@bootlin.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | net: stmmac: add renesas,rzn1-gmac support | expand |
On Wed, Feb 08, 2023 at 05:42:02PM +0100, Clément Léger wrote: > Add support for Renesas RZ/N1 GMAC. This support uses a custom PCS (MIIC) > which is handle by parsing the pcs-handle device tree property. > > Signed-off-by: Clément Léger <clement.leger@bootlin.com> > --- > drivers/net/ethernet/stmicro/stmmac/Kconfig | 11 ++ > drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + > .../net/ethernet/stmicro/stmmac/dwmac-rzn1.c | 120 ++++++++++++++++++ > 3 files changed, 132 insertions(+) > create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c > > diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig > index f77511fe4e87..be5429b7e192 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig > +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig > @@ -153,6 +153,17 @@ config DWMAC_ROCKCHIP > This selects the Rockchip RK3288 SoC glue layer support for > the stmmac device driver. > > +config DWMAC_RZN1 > + tristate "Renesas RZ/N1 dwmac support" > + default ARCH_RZN1 > + depends on OF && (ARCH_RZN1 || COMPILE_TEST) > + select PCS_RZN1_MIIC > + help > + Support for Ethernet controller on Renesas RZ/N1 SoC family. > + > + This selects the Renesas RZ/N1 SoC glue layer support for > + the stmmac device driver. > + > config DWMAC_SOCFPGA > tristate "SOCFPGA dwmac support" > default ARCH_INTEL_SOCFPGA > diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile > index 057e4bab5c08..53a0f74c1cb5 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/Makefile > +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile > @@ -22,6 +22,7 @@ obj-$(CONFIG_DWMAC_MESON) += dwmac-meson.o dwmac-meson8b.o > obj-$(CONFIG_DWMAC_OXNAS) += dwmac-oxnas.o > obj-$(CONFIG_DWMAC_QCOM_ETHQOS) += dwmac-qcom-ethqos.o > obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o > +obj-$(CONFIG_DWMAC_RZN1) += dwmac-rzn1.o > obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-altr-socfpga.o > obj-$(CONFIG_DWMAC_STI) += dwmac-sti.o > obj-$(CONFIG_DWMAC_STM32) += dwmac-stm32.o > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c > new file mode 100644 > index 000000000000..82118d8cb50e > --- /dev/null > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c > @@ -0,0 +1,120 @@ > +// SPDX-License-Identifier: GPL-2.0-or-later > +/* > + * Copyright (C) 2022 Schneider-Electric > + * > + * Clément Léger <clement.leger@bootlin.com> > + */ > + > +#include <linux/of.h> > +#include <linux/pcs-rzn1-miic.h> > +#include <linux/phylink.h> > +#include <linux/platform_device.h> > + > +#include "stmmac_platform.h" > +#include "stmmac.h" > + > +struct rzn1_dwmac { > + struct phylink_pcs *pcs; > +}; I don't understand why you need this... > + > +static int rzn1_dt_parse(struct device *dev, struct rzn1_dwmac *dwmac) You could pass a pointer to struct plat_stmmacenet_data into here, and have it fill in your new ->pcs directly, and save the extra devm allocations. > +{ > + struct device_node *np = dev->of_node; > + struct device_node *pcs_node; > + struct phylink_pcs *pcs; > + int ret; > + > + pcs_node = of_parse_phandle(np, "pcs-handle", 0); > + if (!pcs_node) > + return 0; > + > + pcs = miic_create(dev, pcs_node); Don't you need to put pcs_node? > + if (IS_ERR(pcs)) > + return PTR_ERR(pcs); > + > + ret = miic_early_setup(pcs, dev); > + if (ret) { > + miic_destroy(pcs); > + return ret; > + } > + > + dwmac->pcs = pcs; > + > + return 0; > +} > + > +static int rzn1_dwmac_probe(struct platform_device *pdev) > +{ > + struct plat_stmmacenet_data *plat_dat; > + struct stmmac_resources stmmac_res; > + struct device *dev = &pdev->dev; > + struct rzn1_dwmac *dwmac; > + int ret; > + > + ret = stmmac_get_platform_resources(pdev, &stmmac_res); > + if (ret) > + return ret; > + > + plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); > + if (IS_ERR(plat_dat)) > + return PTR_ERR(plat_dat); > + > + dwmac = devm_kzalloc(dev, sizeof(*dwmac), GFP_KERNEL); > + if (!dwmac) { > + ret = -ENOMEM; > + goto err_remove_config_dt; > + } > + > + ret = rzn1_dt_parse(dev, dwmac); > + if (ret) > + goto err_remove_config_dt; > + > + plat_dat->bsp_priv = dwmac; You could set this to point back to plat_dat. > + plat_dat->pcs = dwmac->pcs; > + > + ret = stmmac_dvr_probe(dev, plat_dat, &stmmac_res); > + if (ret) > + goto err_free_pcs; > + > + return 0; > + > +err_free_pcs: > + if (dwmac->pcs) > + miic_destroy(dwmac->pcs); > + > +err_remove_config_dt: > + stmmac_remove_config_dt(pdev, plat_dat); > + > + return ret; > +} > + > +static int rzn1_dwmac_remove(struct platform_device *pdev) > +{ > + struct rzn1_dwmac *dwmac = get_stmmac_bsp_priv(&pdev->dev); ... which means you get plat_dat back here... > + int ret = stmmac_dvr_remove(&pdev->dev); > + > + if (dwmac->pcs) > + miic_destroy(dwmac->pcs); and can still destroy the pcs.
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index f77511fe4e87..be5429b7e192 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -153,6 +153,17 @@ config DWMAC_ROCKCHIP This selects the Rockchip RK3288 SoC glue layer support for the stmmac device driver. +config DWMAC_RZN1 + tristate "Renesas RZ/N1 dwmac support" + default ARCH_RZN1 + depends on OF && (ARCH_RZN1 || COMPILE_TEST) + select PCS_RZN1_MIIC + help + Support for Ethernet controller on Renesas RZ/N1 SoC family. + + This selects the Renesas RZ/N1 SoC glue layer support for + the stmmac device driver. + config DWMAC_SOCFPGA tristate "SOCFPGA dwmac support" default ARCH_INTEL_SOCFPGA diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index 057e4bab5c08..53a0f74c1cb5 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_DWMAC_MESON) += dwmac-meson.o dwmac-meson8b.o obj-$(CONFIG_DWMAC_OXNAS) += dwmac-oxnas.o obj-$(CONFIG_DWMAC_QCOM_ETHQOS) += dwmac-qcom-ethqos.o obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o +obj-$(CONFIG_DWMAC_RZN1) += dwmac-rzn1.o obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-altr-socfpga.o obj-$(CONFIG_DWMAC_STI) += dwmac-sti.o obj-$(CONFIG_DWMAC_STM32) += dwmac-stm32.o diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c new file mode 100644 index 000000000000..82118d8cb50e --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c @@ -0,0 +1,120 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2022 Schneider-Electric + * + * Clément Léger <clement.leger@bootlin.com> + */ + +#include <linux/of.h> +#include <linux/pcs-rzn1-miic.h> +#include <linux/phylink.h> +#include <linux/platform_device.h> + +#include "stmmac_platform.h" +#include "stmmac.h" + +struct rzn1_dwmac { + struct phylink_pcs *pcs; +}; + +static int rzn1_dt_parse(struct device *dev, struct rzn1_dwmac *dwmac) +{ + struct device_node *np = dev->of_node; + struct device_node *pcs_node; + struct phylink_pcs *pcs; + int ret; + + pcs_node = of_parse_phandle(np, "pcs-handle", 0); + if (!pcs_node) + return 0; + + pcs = miic_create(dev, pcs_node); + if (IS_ERR(pcs)) + return PTR_ERR(pcs); + + ret = miic_early_setup(pcs, dev); + if (ret) { + miic_destroy(pcs); + return ret; + } + + dwmac->pcs = pcs; + + return 0; +} + +static int rzn1_dwmac_probe(struct platform_device *pdev) +{ + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + struct device *dev = &pdev->dev; + struct rzn1_dwmac *dwmac; + int ret; + + ret = stmmac_get_platform_resources(pdev, &stmmac_res); + if (ret) + return ret; + + plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); + if (IS_ERR(plat_dat)) + return PTR_ERR(plat_dat); + + dwmac = devm_kzalloc(dev, sizeof(*dwmac), GFP_KERNEL); + if (!dwmac) { + ret = -ENOMEM; + goto err_remove_config_dt; + } + + ret = rzn1_dt_parse(dev, dwmac); + if (ret) + goto err_remove_config_dt; + + plat_dat->bsp_priv = dwmac; + plat_dat->pcs = dwmac->pcs; + + ret = stmmac_dvr_probe(dev, plat_dat, &stmmac_res); + if (ret) + goto err_free_pcs; + + return 0; + +err_free_pcs: + if (dwmac->pcs) + miic_destroy(dwmac->pcs); + +err_remove_config_dt: + stmmac_remove_config_dt(pdev, plat_dat); + + return ret; +} + +static int rzn1_dwmac_remove(struct platform_device *pdev) +{ + struct rzn1_dwmac *dwmac = get_stmmac_bsp_priv(&pdev->dev); + int ret = stmmac_dvr_remove(&pdev->dev); + + if (dwmac->pcs) + miic_destroy(dwmac->pcs); + + return ret; +} + +static const struct of_device_id rzn1_dwmac_match[] = { + { .compatible = "renesas,rzn1-gmac" }, + { } +}; +MODULE_DEVICE_TABLE(of, rzn1_dwmac_match); + +static struct platform_driver rzn1_dwmac_driver = { + .probe = rzn1_dwmac_probe, + .remove = rzn1_dwmac_remove, + .driver = { + .name = "rzn1-dwmac", + .of_match_table = rzn1_dwmac_match, + }, +}; +module_platform_driver(rzn1_dwmac_driver); + +MODULE_AUTHOR("Clément Léger <clement.leger@bootlin.com>"); +MODULE_DESCRIPTION("Renesas RZN1 DWMAC specific glue layer"); +MODULE_LICENSE("GPL");
Add support for Renesas RZ/N1 GMAC. This support uses a custom PCS (MIIC) which is handle by parsing the pcs-handle device tree property. Signed-off-by: Clément Léger <clement.leger@bootlin.com> --- drivers/net/ethernet/stmicro/stmmac/Kconfig | 11 ++ drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../net/ethernet/stmicro/stmmac/dwmac-rzn1.c | 120 ++++++++++++++++++ 3 files changed, 132 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-rzn1.c