diff options
author | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
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committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c')
-rw-r--r-- | kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c b/kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c new file mode 100644 index 000000000..78e9d1861 --- /dev/null +++ b/kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c @@ -0,0 +1,86 @@ +/* + * DWMAC glue for NXP LPC18xx/LPC43xx Ethernet + * + * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/mfd/syscon.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_net.h> +#include <linux/phy.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/stmmac.h> + +#include "stmmac_platform.h" + +/* Register defines for CREG syscon */ +#define LPC18XX_CREG_CREG6 0x12c +# define LPC18XX_CREG_CREG6_ETHMODE_MASK 0x7 +# define LPC18XX_CREG_CREG6_ETHMODE_MII 0x0 +# define LPC18XX_CREG_CREG6_ETHMODE_RMII 0x4 + +static int lpc18xx_dwmac_probe(struct platform_device *pdev) +{ + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + struct regmap *reg; + u8 ethmode; + 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); + + plat_dat->has_gmac = true; + + reg = syscon_regmap_lookup_by_compatible("nxp,lpc1850-creg"); + if (IS_ERR(reg)) { + dev_err(&pdev->dev, "syscon lookup failed\n"); + return PTR_ERR(reg); + } + + if (plat_dat->interface == PHY_INTERFACE_MODE_MII) { + ethmode = LPC18XX_CREG_CREG6_ETHMODE_MII; + } else if (plat_dat->interface == PHY_INTERFACE_MODE_RMII) { + ethmode = LPC18XX_CREG_CREG6_ETHMODE_RMII; + } else { + dev_err(&pdev->dev, "Only MII and RMII mode supported\n"); + return -EINVAL; + } + + regmap_update_bits(reg, LPC18XX_CREG_CREG6, + LPC18XX_CREG_CREG6_ETHMODE_MASK, ethmode); + + return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); +} + +static const struct of_device_id lpc18xx_dwmac_match[] = { + { .compatible = "nxp,lpc1850-dwmac" }, + { } +}; +MODULE_DEVICE_TABLE(of, lpc18xx_dwmac_match); + +static struct platform_driver lpc18xx_dwmac_driver = { + .probe = lpc18xx_dwmac_probe, + .remove = stmmac_pltfr_remove, + .driver = { + .name = "lpc18xx-dwmac", + .pm = &stmmac_pltfr_pm_ops, + .of_match_table = lpc18xx_dwmac_match, + }, +}; +module_platform_driver(lpc18xx_dwmac_driver); + +MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>"); +MODULE_DESCRIPTION("DWMAC glue for LPC18xx/43xx Ethernet"); +MODULE_LICENSE("GPL v2"); |