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linux-next/arch/arm/mach-omap2/pdata-quirks.c
Tony Lindgren 7d2911c438 net: smc91x: Fix gpios for device tree based booting 
With legacy booting, the platform init code was taking care of
the configuring of GPIOs. With device tree based booting, things
may or may not work depending what bootloader has configured or
if the legacy platform code gets called.

Let's add support for the pwrdn and reset GPIOs to the smc91x
driver to fix the issues of smc91x not working properly when
booted in device tree mode.

And let's change n900 to use these settings as some versions
of the bootloader do not configure things properly causing
errors.

Reported-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 15:54:18 -04:00

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/*
* 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/wl12xx.h>
#include <linux/platform_data/pinctrl-single.h>
#include <linux/platform_data/iommu-omap.h>
#include "am35xx.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;
#if IS_ENABLED(CONFIG_WL12XX)
static struct wl12xx_platform_data wl12xx __initdata;
static void __init __used legacy_init_wl12xx(unsigned ref_clock,
unsigned tcxo_clock,
int gpio)
{
int res;
wl12xx.board_ref_clock = ref_clock;
wl12xx.board_tcxo_clock = tcxo_clock;
wl12xx.irq = gpio_to_irq(gpio);
res = wl12xx_set_platform_data(&wl12xx);
if (res) {
pr_err("error setting wl12xx data: %d\n", res);
return;
}
}
#else
static inline void legacy_init_wl12xx(unsigned ref_clock,
unsigned tcxo_clock,
int gpio)
{
}
#endif
#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");
legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136);
omap_ads7846_init(1, 57, 0, NULL);
}
static void __init omap3_sbc_t3530_legacy_init(void)
{
omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
omap_ads7846_init(1, 57, 0, NULL);
}
static void __init omap3_igep0020_legacy_init(void)
{
}
static void __init omap3_evm_legacy_init(void)
{
legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
}
static void __init omap3_zoom_legacy_init(void)
{
legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
}
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();
legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 145);
omap_ads7846_init(1, 57, 0, NULL);
}
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 */
#ifdef CONFIG_ARCH_OMAP4
static void __init omap4_sdp_legacy_init(void)
{
legacy_init_wl12xx(WL12XX_REFCLOCK_26,
WL12XX_TCXOCLOCK_26, 53);
}
static void __init omap4_panda_legacy_init(void)
{
legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
}
static void __init var_som_om44_legacy_init(void)
{
legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 41);
}
#endif
#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_AM33XX
static void __init am335x_evmsk_legacy_init(void)
{
legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 31);
}
#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", omap3_igep0020_legacy_init, },
{ "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
{ "ti,omap3-zoom3", omap3_zoom_legacy_init, },
{ "ti,am3517-evm", am3517_evm_legacy_init, },
{ "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
#endif
#ifdef CONFIG_ARCH_OMAP4
{ "ti,omap4-sdp", omap4_sdp_legacy_init, },
{ "ti,omap4-panda", omap4_panda_legacy_init, },
{ "variscite,var-dvk-om44", var_som_om44_legacy_init, },
{ "variscite,var-stk-om44", var_som_om44_legacy_init, },
#endif
#ifdef CONFIG_SOC_AM33XX
{ "ti,am335x-evmsk", am335x_evmsk_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);
}
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