diff options
Diffstat (limited to 'kernel/arch/arm/mach-omap2/pdata-quirks.c')
| -rw-r--r-- | kernel/arch/arm/mach-omap2/pdata-quirks.c | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-omap2/pdata-quirks.c b/kernel/arch/arm/mach-omap2/pdata-quirks.c new file mode 100644 index 000000000..af11511dd --- /dev/null +++ b/kernel/arch/arm/mach-omap2/pdata-quirks.c @@ -0,0 +1,388 @@ +/* + * Legacy platform_data quirks + * + * Copyright (C) 2013 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/clk.h> +#include <linux/davinci_emac.h> +#include <linux/gpio.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/of_platform.h> +#include <linux/ti_wilink_st.h> + +#include <linux/platform_data/pinctrl-single.h> +#include <linux/platform_data/iommu-omap.h> + +#include "common.h" +#include "common-board-devices.h" +#include "dss-common.h" +#include "control.h" +#include "omap_device.h" +#include "omap-secure.h" +#include "soc.h" + +struct pdata_init { + const char *compatible; + void (*fn)(void); +}; + +struct of_dev_auxdata omap_auxdata_lookup[]; +static struct twl4030_gpio_platform_data twl_gpio_auxdata; + +#ifdef CONFIG_MACH_NOKIA_N8X0 +static void __init omap2420_n8x0_legacy_init(void) +{ + omap_auxdata_lookup[0].platform_data = n8x0_legacy_init(); +} +#else +#define omap2420_n8x0_legacy_init NULL +#endif + +#ifdef CONFIG_ARCH_OMAP3 +static void __init hsmmc2_internal_input_clk(void) +{ + u32 reg; + + reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1); + reg |= OMAP2_MMCSDIO2ADPCLKISEL; + omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1); +} + +static struct iommu_platform_data omap3_iommu_pdata = { + .reset_name = "mmu", + .assert_reset = omap_device_assert_hardreset, + .deassert_reset = omap_device_deassert_hardreset, +}; + +static int omap3_sbc_t3730_twl_callback(struct device *dev, + unsigned gpio, + unsigned ngpio) +{ + int res; + + res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH, + "wlan pwr"); + if (res) + return res; + + gpio_export(gpio, 0); + + return 0; +} + +static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name) +{ + int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name); + + if (err) { + pr_err("SBC-T3x: %s reset gpio request failed: %d\n", + hub_name, err); + return; + } + + gpio_export(gpio, 0); + + udelay(10); + gpio_set_value(gpio, 1); + msleep(1); +} + +static void __init omap3_sbc_t3730_twl_init(void) +{ + twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback; +} + +static void __init omap3_sbc_t3730_legacy_init(void) +{ + omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub"); +} + +static void __init omap3_sbc_t3530_legacy_init(void) +{ + omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub"); +} + +struct ti_st_plat_data wilink_pdata = { + .nshutdown_gpio = 137, + .dev_name = "/dev/ttyO1", + .flow_cntrl = 1, + .baud_rate = 300000, +}; + +static struct platform_device wl18xx_device = { + .name = "kim", + .id = -1, + .dev = { + .platform_data = &wilink_pdata, + } +}; + +static struct platform_device btwilink_device = { + .name = "btwilink", + .id = -1, +}; + +static void __init omap3_igep0020_rev_f_legacy_init(void) +{ + platform_device_register(&wl18xx_device); + platform_device_register(&btwilink_device); +} + +static void __init omap3_igep0030_rev_g_legacy_init(void) +{ + platform_device_register(&wl18xx_device); + platform_device_register(&btwilink_device); +} + +static void __init omap3_evm_legacy_init(void) +{ + hsmmc2_internal_input_clk(); +} + +static void am35xx_enable_emac_int(void) +{ + u32 v; + + v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); + v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR | + AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR); + omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR); + omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */ +} + +static void am35xx_disable_emac_int(void) +{ + u32 v; + + v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); + v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR); + omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR); + omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */ +} + +static struct emac_platform_data am35xx_emac_pdata = { + .interrupt_enable = am35xx_enable_emac_int, + .interrupt_disable = am35xx_disable_emac_int, +}; + +static void __init am35xx_emac_reset(void) +{ + u32 v; + + v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); + v &= ~AM35XX_CPGMACSS_SW_RST; + omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET); + omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */ +} + +static struct gpio cm_t3517_wlan_gpios[] __initdata = { + { 56, GPIOF_OUT_INIT_HIGH, "wlan pwr" }, + { 4, GPIOF_OUT_INIT_HIGH, "xcvr noe" }, +}; + +static void __init omap3_sbc_t3517_wifi_init(void) +{ + int err = gpio_request_array(cm_t3517_wlan_gpios, + ARRAY_SIZE(cm_t3517_wlan_gpios)); + if (err) { + pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err); + return; + } + + gpio_export(cm_t3517_wlan_gpios[0].gpio, 0); + gpio_export(cm_t3517_wlan_gpios[1].gpio, 0); + + msleep(100); + gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0); +} + +static void __init omap3_sbc_t3517_legacy_init(void) +{ + omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub"); + omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub"); + am35xx_emac_reset(); + hsmmc2_internal_input_clk(); + omap3_sbc_t3517_wifi_init(); +} + +static void __init am3517_evm_legacy_init(void) +{ + am35xx_emac_reset(); +} + +static struct platform_device omap3_rom_rng_device = { + .name = "omap3-rom-rng", + .id = -1, + .dev = { + .platform_data = rx51_secure_rng_call, + }, +}; + +static void __init nokia_n900_legacy_init(void) +{ + hsmmc2_internal_input_clk(); + + if (omap_type() == OMAP2_DEVICE_TYPE_SEC) { + if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) { + pr_info("RX-51: Enabling ARM errata 430973 workaround\n"); + /* set IBE to 1 */ + rx51_secure_update_aux_cr(BIT(6), 0); + } else { + pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n"); + pr_warn("Thumb binaries may crash randomly without this workaround\n"); + } + + pr_info("RX-51: Registring OMAP3 HWRNG device\n"); + platform_device_register(&omap3_rom_rng_device); + + } +} + +static void __init omap3_tao3530_legacy_init(void) +{ + hsmmc2_internal_input_clk(); +} +#endif /* CONFIG_ARCH_OMAP3 */ + +#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) +static struct iommu_platform_data omap4_iommu_pdata = { + .reset_name = "mmu_cache", + .assert_reset = omap_device_assert_hardreset, + .deassert_reset = omap_device_deassert_hardreset, +}; +#endif + +#ifdef CONFIG_SOC_OMAP5 +static void __init omap5_uevm_legacy_init(void) +{ +} +#endif + +static struct pcs_pdata pcs_pdata; + +void omap_pcs_legacy_init(int irq, void (*rearm)(void)) +{ + pcs_pdata.irq = irq; + pcs_pdata.rearm = rearm; +} + +/* + * GPIOs for TWL are initialized by the I2C bus and need custom + * handing until DSS has device tree bindings. + */ +void omap_auxdata_legacy_init(struct device *dev) +{ + if (dev->platform_data) + return; + + if (strcmp("twl4030-gpio", dev_name(dev))) + return; + + dev->platform_data = &twl_gpio_auxdata; +} + +/* + * Few boards still need auxdata populated before we populate + * the dev entries in of_platform_populate(). + */ +static struct pdata_init auxdata_quirks[] __initdata = { +#ifdef CONFIG_SOC_OMAP2420 + { "nokia,n800", omap2420_n8x0_legacy_init, }, + { "nokia,n810", omap2420_n8x0_legacy_init, }, + { "nokia,n810-wimax", omap2420_n8x0_legacy_init, }, +#endif +#ifdef CONFIG_ARCH_OMAP3 + { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, }, +#endif + { /* sentinel */ }, +}; + +struct of_dev_auxdata omap_auxdata_lookup[] __initdata = { +#ifdef CONFIG_MACH_NOKIA_N8X0 + OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL), + OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data), + OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data), +#endif +#ifdef CONFIG_ARCH_OMAP3 + OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata), + OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata), + OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata), + OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu", + &omap3_iommu_pdata), + /* Only on am3517 */ + OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL), + OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0", + &am35xx_emac_pdata), +#endif +#ifdef CONFIG_ARCH_OMAP4 + OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata), + OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata), +#endif +#ifdef CONFIG_SOC_OMAP5 + OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata), + OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata), +#endif +#ifdef CONFIG_SOC_DRA7XX + OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata), +#endif +#ifdef CONFIG_SOC_AM43XX + OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata), +#endif +#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) + OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu", + &omap4_iommu_pdata), + OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu", + &omap4_iommu_pdata), +#endif + { /* sentinel */ }, +}; + +/* + * Few boards still need to initialize some legacy devices with + * platform data until the drivers support device tree. + */ +static struct pdata_init pdata_quirks[] __initdata = { +#ifdef CONFIG_ARCH_OMAP3 + { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, }, + { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, }, + { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, }, + { "nokia,omap3-n900", nokia_n900_legacy_init, }, + { "nokia,omap3-n9", hsmmc2_internal_input_clk, }, + { "nokia,omap3-n950", hsmmc2_internal_input_clk, }, + { "isee,omap3-igep0020-rev-f", omap3_igep0020_rev_f_legacy_init, }, + { "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, }, + { "ti,omap3-evm-37xx", omap3_evm_legacy_init, }, + { "ti,am3517-evm", am3517_evm_legacy_init, }, + { "technexion,omap3-tao3530", omap3_tao3530_legacy_init, }, +#endif +#ifdef CONFIG_SOC_OMAP5 + { "ti,omap5-uevm", omap5_uevm_legacy_init, }, +#endif + { /* sentinel */ }, +}; + +static void pdata_quirks_check(struct pdata_init *quirks) +{ + while (quirks->compatible) { + if (of_machine_is_compatible(quirks->compatible)) { + if (quirks->fn) + quirks->fn(); + break; + } + quirks++; + } +} + +void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table) +{ + omap_sdrc_init(NULL, NULL); + pdata_quirks_check(auxdata_quirks); + of_platform_populate(NULL, omap_dt_match_table, + omap_auxdata_lookup, NULL); + pdata_quirks_check(pdata_quirks); +} |