Differential D5930 Diff 15482 sys/arm/allwinner/a10_gpio.c

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sys/arm/allwinner/a10_gpio.c

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#include <dev/fdt/fdt_common.h>		#include <dev/fdt/fdt_common.h>
#include <dev/fdt/fdt_pinctrl.h>		#include <dev/fdt/fdt_pinctrl.h>
#include <dev/gpio/gpiobusvar.h>		#include <dev/gpio/gpiobusvar.h>
#include <dev/ofw/ofw_bus.h>		#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>		#include <dev/ofw/ofw_bus_subr.h>

#include <arm/allwinner/allwinner_machdep.h>		#include <arm/allwinner/allwinner_machdep.h>
#include <arm/allwinner/allwinner_pinctrl.h>		#include <arm/allwinner/allwinner_pinctrl.h>
		#include <dev/extres/clk/clk.h>
		#include <dev/extres/hwreset/hwreset.h>

#include "gpio_if.h"		#include "gpio_if.h"

/*
* A10 have 9 banks of gpio.
* 32 pins per bank:
* PA0 - PA17 \| PB0 - PB23 \| PC0 - PC24
* PD0 - PD27 \| PE0 - PE31 \| PF0 - PF5
* PG0 - PG9 \| PH0 - PH27 \| PI0 - PI12
*/

#define A10_GPIO_DEFAULT_CAPS (GPIO_PIN_INPUT \| GPIO_PIN_OUTPUT \| \		#define A10_GPIO_DEFAULT_CAPS (GPIO_PIN_INPUT \| GPIO_PIN_OUTPUT \| \
GPIO_PIN_PULLUP \| GPIO_PIN_PULLDOWN)		GPIO_PIN_PULLUP \| GPIO_PIN_PULLDOWN)

#define A10_GPIO_NONE 0		#define A10_GPIO_NONE 0
#define A10_GPIO_PULLUP 1		#define A10_GPIO_PULLUP 1
#define A10_GPIO_PULLDOWN 2		#define A10_GPIO_PULLDOWN 2

#define A10_GPIO_INPUT 0		#define A10_GPIO_INPUT 0
#define A10_GPIO_OUTPUT 1		#define A10_GPIO_OUTPUT 1

#define AW_GPIO_DRV_MASK 0x3		#define AW_GPIO_DRV_MASK 0x3
#define AW_GPIO_PUD_MASK 0x3		#define AW_GPIO_PUD_MASK 0x3

static struct ofw_compat_data compat_data[] = {		#define AW_PINCTRL 1
{"allwinner,sun4i-a10-pinctrl", 1},		#define AW_R_PINCTRL 2
{"allwinner,sun7i-a20-pinctrl", 1},
{"allwinner,sun6i-a31-pinctrl", 1},
{"allwinner,sun6i-a31s-pinctrl", 1},
{NULL, 0}
};

struct a10_gpio_softc {
device_t sc_dev;
device_t sc_busdev;
struct mtx sc_mtx;
struct resource * sc_mem_res;
struct resource * sc_irq_res;
bus_space_tag_t sc_bst;
bus_space_handle_t sc_bsh;
void * sc_intrhand;
const struct allwinner_padconf * padconf;
};

/* Defined in a10_padconf.c */		/* Defined in a10_padconf.c */
#ifdef SOC_ALLWINNER_A10		#ifdef SOC_ALLWINNER_A10
extern const struct allwinner_padconf a10_padconf;		extern const struct allwinner_padconf a10_padconf;
#endif		#endif

/* Defined in a20_padconf.c */		/* Defined in a20_padconf.c */
#ifdef SOC_ALLWINNER_A20		#ifdef SOC_ALLWINNER_A20
extern const struct allwinner_padconf a20_padconf;		extern const struct allwinner_padconf a20_padconf;
#endif		#endif

/* Defined in a31_padconf.c */		/* Defined in a31_padconf.c */
#ifdef SOC_ALLWINNER_A31		#ifdef SOC_ALLWINNER_A31
extern const struct allwinner_padconf a31_padconf;		extern const struct allwinner_padconf a31_padconf;
#endif		#endif

/* Defined in a31s_padconf.c */		/* Defined in a31s_padconf.c */
#ifdef SOC_ALLWINNER_A31S		#ifdef SOC_ALLWINNER_A31S
extern const struct allwinner_padconf a31s_padconf;		extern const struct allwinner_padconf a31s_padconf;
#endif		#endif

		#if defined(SOC_ALLWINNER_A31) \|\| defined(SOC_ALLWINNER_A31S)
		extern const struct allwinner_padconf a31_r_padconf;
		#endif

		static struct ofw_compat_data compat_data[] = {
		#ifdef SOC_ALLWINNER_A10
		{"allwinner,sun4i-a10-pinctrl", (uintptr_t)&a10_padconf},
		#endif
		#ifdef SOC_ALLWINNER_A20
		{"allwinner,sun7i-a20-pinctrl", (uintptr_t)&a20_padconf},
		#endif
		#ifdef SOC_ALLWINNER_A31
		{"allwinner,sun6i-a31-pinctrl", (uintptr_t)&a31_padconf},
		#endif
		jmcneillUnsubmitted Done Inline Actions Instead of the ifndef below, why don't we just say `#if defined(SOC_ALLWINNER_A31) \|\| defined(SOC_ALLWINNER_A31S)` here? Same for the `extern` above. jmcneill: Instead of the ifndef below, why don't we just say `#if defined(SOC_ALLWINNER_A31) \|\| defined…
		manu_bidouilliste.comAuthorUnsubmitted Done Inline Actions Because sometimes I'm stupid that's why :) I'll change that manu_bidouilliste.com: Because sometimes I'm stupid that's why :) I'll change that
		#ifdef SOC_ALLWINNER_A31S
		{"allwinner,sun6i-a31s-pinctrl", (uintptr_t)&a31s_padconf},
		#endif
		#if defined(SOC_ALLWINNER_A31) \|\| defined(SOC_ALLWINNER_A31S)
		{"allwinner,sun6i-a31-r-pinctrl", (uintptr_t)&a31_r_padconf},
		#endif
		jmcneillUnsubmitted Done Inline Actions This compat string is duplicated on line 111 jmcneill: This compat string is duplicated on line 111
		{NULL, 0}
		};

		struct a10_gpio_softc {
		device_t sc_dev;
		device_t sc_busdev;
		struct mtx sc_mtx;
		struct resource * sc_mem_res;
		struct resource * sc_irq_res;
		bus_space_tag_t sc_bst;
		bus_space_handle_t sc_bsh;
		void * sc_intrhand;
		const struct allwinner_padconf * padconf;
		};

#define A10_GPIO_LOCK(_sc) mtx_lock_spin(&(_sc)->sc_mtx)		#define A10_GPIO_LOCK(_sc) mtx_lock_spin(&(_sc)->sc_mtx)
#define A10_GPIO_UNLOCK(_sc) mtx_unlock_spin(&(_sc)->sc_mtx)		#define A10_GPIO_UNLOCK(_sc) mtx_unlock_spin(&(_sc)->sc_mtx)
#define A10_GPIO_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED)		#define A10_GPIO_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED)

#define A10_GPIO_GP_CFG(_bank, _idx) 0x00 + ((_bank) * 0x24) + ((_idx) << 2)		#define A10_GPIO_GP_CFG(_bank, _idx) 0x00 + ((_bank) * 0x24) + ((_idx) << 2)
#define A10_GPIO_GP_DAT(_bank) 0x10 + ((_bank) * 0x24)		#define A10_GPIO_GP_DAT(_bank) 0x10 + ((_bank) * 0x24)
#define A10_GPIO_GP_DRV(_bank, _idx) 0x14 + ((_bank) * 0x24) + ((_idx) << 2)		#define A10_GPIO_GP_DRV(_bank, _idx) 0x14 + ((_bank) * 0x24) + ((_idx) << 2)
#define A10_GPIO_GP_PUL(_bank, _idx) 0x1c + ((_bank) * 0x24) + ((_idx) << 2)		#define A10_GPIO_GP_PUL(_bank, _idx) 0x1c + ((_bank) * 0x24) + ((_idx) << 2)
▲ Show 20 Lines • Show All 392 Lines • ▼ Show 20 Lines	a10_gpio_probe(device_t dev)

device_set_desc(dev, "Allwinner GPIO/Pinmux controller");		device_set_desc(dev, "Allwinner GPIO/Pinmux controller");
return (BUS_PROBE_DEFAULT);		return (BUS_PROBE_DEFAULT);
}		}

static int		static int
a10_gpio_attach(device_t dev)		a10_gpio_attach(device_t dev)
{		{
int rid;		int rid, error;
phandle_t gpio;		phandle_t gpio;
struct a10_gpio_softc *sc;		struct a10_gpio_softc *sc;
		clk_t clk;
		hwreset_t rst;

sc = device_get_softc(dev);		sc = device_get_softc(dev);
sc->sc_dev = dev;		sc->sc_dev = dev;

mtx_init(&sc->sc_mtx, "a10 gpio", "gpio", MTX_SPIN);		mtx_init(&sc->sc_mtx, "a10 gpio", "gpio", MTX_SPIN);

rid = 0;		rid = 0;
sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,		sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);		RF_ACTIVE);
if (!sc->sc_mem_res) {		if (!sc->sc_mem_res) {
device_printf(dev, "cannot allocate memory window\n");		device_printf(dev, "cannot allocate memory window\n");
goto fail;		goto fail;
}		}

sc->sc_bst = rman_get_bustag(sc->sc_mem_res);		sc->sc_bst = rman_get_bustag(sc->sc_mem_res);
sc->sc_bsh = rman_get_bushandle(sc->sc_mem_res);		sc->sc_bsh = rman_get_bushandle(sc->sc_mem_res);

rid = 0;		rid = 0;
sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,		sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);		RF_ACTIVE);
if (!sc->sc_irq_res) {		if (!sc->sc_irq_res) {
device_printf(dev, "cannot allocate interrupt\n");		device_printf(dev, "cannot allocate interrupt\n");
goto fail;		goto fail;
		jmcneillUnsubmitted Done Inline Actions As discussed on IRC, we should move the padconf values to compat_data[] ocd_data, so something like: static struct ofw_compat_data compat_data[] = { #ifdef SOC_ALLWINNER_A10 { "allwinner,sun4i-a10-pinctrl", (uintptr_t)&a10_padconf }, #endif ... and here we can simply do: sc->padconf = (struct allwinner_padconf )ofw_bus_search_compatible(dev, compat_data)->ocd_data; jmcneill:* As discussed on IRC, we should move the padconf values to compat_data[] ocd_data, so something…
}		}

/* Find our node. */		/* Find our node. */
gpio = ofw_bus_get_node(sc->sc_dev);		gpio = ofw_bus_get_node(sc->sc_dev);
if (!OF_hasprop(gpio, "gpio-controller"))		if (!OF_hasprop(gpio, "gpio-controller"))
/* Node is not a GPIO controller. */		/* Node is not a GPIO controller. */
goto fail;		goto fail;

/* Use the right pin data for the current SoC */		/* Use the right pin data for the current SoC */
switch (allwinner_soc_type()) {		sc->padconf = (struct allwinner_padconf *)ofw_bus_search_compatible(dev,
#ifdef SOC_ALLWINNER_A10		compat_data)->ocd_data;
case ALLWINNERSOC_A10:
sc->padconf = &a10_padconf;		if (hwreset_get_by_ofw_idx(dev, 0, &rst) == 0) {
break;		error = hwreset_deassert(rst);
#endif		if (error != 0) {
#ifdef SOC_ALLWINNER_A20		device_printf(dev, "cannot de-assert reset\n");
case ALLWINNERSOC_A20:		return (error);
sc->padconf = &a20_padconf;		}
break;		}
#endif
#ifdef SOC_ALLWINNER_A31		if (clk_get_by_ofw_index(dev, 0, &clk) == 0) {
case ALLWINNERSOC_A31:		error = clk_enable(clk);
sc->padconf = &a31_padconf;		if (error != 0) {
break;		device_printf(dev, "could not enable clock\n");
#endif		return (error);
#ifdef SOC_ALLWINNER_A31S		}
case ALLWINNERSOC_A31S:
sc->padconf = &a31s_padconf;
break;
#endif
default:
return (ENOENT);
}		}

		jmcneillUnsubmitted Done Inline Actions Should this be protected with ifdef SOC_ALLWINNER_xxx ? jmcneill: Should this be protected with ifdef SOC_ALLWINNER_xxx ?
sc->sc_busdev = gpiobus_attach_bus(dev);		sc->sc_busdev = gpiobus_attach_bus(dev);
if (sc->sc_busdev == NULL)		if (sc->sc_busdev == NULL)
goto fail;		goto fail;

/*		/*
* Register as a pinctrl device		* Register as a pinctrl device
*/		*/
fdt_pinctrl_register(dev, "allwinner,pins");		fdt_pinctrl_register(dev, "allwinner,pins");
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