/* * Marvell Orion pinctrl driver based on mvebu pinctrl core * * Author: Thomas Petazzoni * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * The first 16 MPP pins on Orion are easy to handle: they are * configured through 2 consecutive registers, located at the base * address of the MPP device. * * However the last 4 MPP pins are handled by a register at offset * 0x50 from the base address, so it is not consecutive with the first * two registers. */ #include #include #include #include #include #include #include #include #include #include "pinctrl-mvebu.h" static void __iomem *mpp_base; static void __iomem *high_mpp_base; static int orion_mpp_ctrl_get(unsigned pid, unsigned long *config) { unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS; if (pid < 16) { unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS; *config = (readl(mpp_base + off) >> shift) & MVEBU_MPP_MASK; } else { *config = (readl(high_mpp_base) >> shift) & MVEBU_MPP_MASK; } return 0; } static int orion_mpp_ctrl_set(unsigned pid, unsigned long config) { unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS; if (pid < 16) { unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS; u32 reg = readl(mpp_base + off) & ~(MVEBU_MPP_MASK << shift); writel(reg | (config << shift), mpp_base + off); } else { u32 reg = readl(high_mpp_base) & ~(MVEBU_MPP_MASK << shift); writel(reg | (config << shift), high_mpp_base); } return 0; } #define V(f5181, f5182, f5281) \ ((f5181 << 0) | (f5182 << 1) | (f5281 << 2)) enum orion_variant { V_5181 = V(1, 0, 0), V_5182 = V(0, 1, 0), V_5281 = V(0, 0, 1), V_ALL = V(1, 1, 1), }; static struct mvebu_mpp_mode orion_mpp_modes[] = { MPP_MODE(0, MPP_VAR_FUNCTION(0x0, "pcie", "rstout", V_ALL), MPP_VAR_FUNCTION(0x2, "pci", "req2", V_ALL), MPP_VAR_FUNCTION(0x3, "gpio", NULL, V_ALL)), MPP_MODE(1, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x2, "pci", "gnt2", V_ALL)), MPP_MODE(2, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x2, "pci", "req3", V_ALL), MPP_VAR_FUNCTION(0x3, "pci-1", "pme", V_ALL)), MPP_MODE(3, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x2, "pci", "gnt3", V_ALL)), MPP_MODE(4, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x2, "pci", "req4", V_ALL), MPP_VAR_FUNCTION(0x4, "bootnand", "re", V_5182 | V_5281), MPP_VAR_FUNCTION(0x5, "sata0", "prsnt", V_5182)), MPP_MODE(5, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x2, "pci", "gnt4", V_ALL), MPP_VAR_FUNCTION(0x4, "bootnand", "we", V_5182 | V_5281), MPP_VAR_FUNCTION(0x5, "sata1", "prsnt", V_5182)), MPP_MODE(6, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x2, "pci", "req5", V_ALL), MPP_VAR_FUNCTION(0x4, "nand", "re0", V_5182 | V_5281), MPP_VAR_FUNCTION(0x5, "pci-1", "clk", V_5181), MPP_VAR_FUNCTION(0x5, "sata0", "act", V_5182)), MPP_MODE(7, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x2, "pci", "gnt5", V_ALL), MPP_VAR_FUNCTION(0x4, "nand", "we0", V_5182 | V_5281), MPP_VAR_FUNCTION(0x5, "pci-1", "clk", V_5181), MPP_VAR_FUNCTION(0x5, "sata1", "act", V_5182)), MPP_MODE(8, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x1, "ge", "col", V_ALL)), MPP_MODE(9, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x1, "ge", "rxerr", V_ALL)), MPP_MODE(10, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x1, "ge", "crs", V_ALL)), MPP_MODE(11, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x1, "ge", "txerr", V_ALL)), MPP_MODE(12, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x1, "ge", "txd4", V_ALL), MPP_VAR_FUNCTION(0x4, "nand", "re1", V_5182 | V_5281), MPP_VAR_FUNCTION(0x5, "sata0", "ledprsnt", V_5182)), MPP_MODE(13, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x1, "ge", "txd5", V_ALL), MPP_VAR_FUNCTION(0x4, "nand", "we1", V_5182 | V_5281), MPP_VAR_FUNCTION(0x5, "sata1", "ledprsnt", V_5182)), MPP_MODE(14, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x1, "ge", "txd6", V_ALL), MPP_VAR_FUNCTION(0x4, "nand", "re2", V_5182 | V_5281), MPP_VAR_FUNCTION(0x5, "sata0", "ledact", V_5182)), MPP_MODE(15, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_ALL), MPP_VAR_FUNCTION(0x1, "ge", "txd7", V_ALL), MPP_VAR_FUNCTION(0x4, "nand", "we2", V_5182 | V_5281), MPP_VAR_FUNCTION(0x5, "sata1", "ledact", V_5182)), MPP_MODE(16, MPP_VAR_FUNCTION(0x0, "uart1", "rxd", V_5182 | V_5281), MPP_VAR_FUNCTION(0x1, "ge", "rxd4", V_ALL), MPP_VAR_FUNCTION(0x5, "gpio", NULL, V_5182)), MPP_MODE(17, MPP_VAR_FUNCTION(0x0, "uart1", "txd", V_5182 | V_5281), MPP_VAR_FUNCTION(0x1, "ge", "rxd5", V_ALL), MPP_VAR_FUNCTION(0x5, "gpio", NULL, V_5182)), MPP_MODE(18, MPP_VAR_FUNCTION(0x0, "uart1", "cts", V_5182 | V_5281), MPP_VAR_FUNCTION(0x1, "ge", "rxd6", V_ALL), MPP_VAR_FUNCTION(0x5, "gpio", NULL, V_5182)), MPP_MODE(19, MPP_VAR_FUNCTION(0x0, "uart1", "rts", V_5182 | V_5281), MPP_VAR_FUNCTION(0x1, "ge", "rxd7", V_ALL), MPP_VAR_FUNCTION(0x5, "gpio", NULL, V_5182)), }; static const struct mvebu_mpp_ctrl orion_mpp_controls[] = { MPP_FUNC_CTRL(0, 19, NULL, orion_mpp_ctrl), }; static struct pinctrl_gpio_range mv88f5181_gpio_ranges[] = { MPP_GPIO_RANGE(0, 0, 0, 16), }; static struct pinctrl_gpio_range mv88f5182_gpio_ranges[] = { MPP_GPIO_RANGE(0, 0, 0, 19), }; static struct pinctrl_gpio_range mv88f5281_gpio_ranges[] = { MPP_GPIO_RANGE(0, 0, 0, 16), }; static struct mvebu_pinctrl_soc_info mv88f5181_info = { .variant = V_5181, .controls = orion_mpp_controls, .ncontrols = ARRAY_SIZE(orion_mpp_controls), .modes = orion_mpp_modes, .nmodes = ARRAY_SIZE(orion_mpp_modes), .gpioranges = mv88f5181_gpio_ranges, .ngpioranges = ARRAY_SIZE(mv88f5181_gpio_ranges), }; static struct mvebu_pinctrl_soc_info mv88f5182_info = { .variant = V_5182, .controls = orion_mpp_controls, .ncontrols = ARRAY_SIZE(orion_mpp_controls), .modes = orion_mpp_modes, .nmodes = ARRAY_SIZE(orion_mpp_modes), .gpioranges = mv88f5182_gpio_ranges, .ngpioranges = ARRAY_SIZE(mv88f5182_gpio_ranges), }; static struct mvebu_pinctrl_soc_info mv88f5281_info = { .variant = V_5281, .controls = orion_mpp_controls, .ncontrols = ARRAY_SIZE(orion_mpp_controls), .modes = orion_mpp_modes, .nmodes = ARRAY_SIZE(orion_mpp_modes), .gpioranges = mv88f5281_gpio_ranges, .ngpioranges = ARRAY_SIZE(mv88f5281_gpio_ranges), }; /* * There are multiple variants of the Orion SoCs, but in terms of pin * muxing, they are identical. */ static const struct of_device_id orion_pinctrl_of_match[] = { { .compatible = "marvell,88f5181-pinctrl", .data = &mv88f5181_info }, { .compatible = "marvell,88f5181l-pinctrl", .data = &mv88f5181_info }, { .compatible = "marvell,88f5182-pinctrl", .data = &mv88f5182_info }, { .compatible = "marvell,88f5281-pinctrl", .data = &mv88f5281_info }, { } }; static int orion_pinctrl_probe(struct platform_device *pdev) { const struct of_device_id *match = of_match_device(orion_pinctrl_of_match, &pdev->dev); struct resource *res; pdev->dev.platform_data = (void*)match->data; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); mpp_base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(mpp_base)) return PTR_ERR(mpp_base); res = platform_get_resource(pdev, IORESOURCE_MEM, 1); high_mpp_base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(high_mpp_base)) return PTR_ERR(high_mpp_base); return mvebu_pinctrl_probe(pdev); } static struct platform_driver orion_pinctrl_driver = { .driver = { .name = "orion-pinctrl", .of_match_table = of_match_ptr(orion_pinctrl_of_match), }, .probe = orion_pinctrl_probe, }; module_platform_driver(orion_pinctrl_driver); MODULE_AUTHOR("Thomas Petazzoni "); MODULE_DESCRIPTION("Marvell Orion pinctrl driver"); MODULE_LICENSE("GPL v2");