1 files changed, 0 insertions, 482 deletions

diff --git a/sys/arm64/rockchip/rk_spi.c b/sys/arm64/rockchip/rk_spi.c
deleted file mode 100644
index fbfeb70a3fa7..000000000000
--- a/sys/arm64/rockchip/rk_spi.c
+++ /dev/null
@@ -1,482 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2019 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/bus.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/module.h>
-#include <sys/mutex.h>
-#include <sys/rman.h>
-#include <sys/resource.h>
-#include <machine/bus.h>
-
-#include <dev/ofw/ofw_bus.h>
-#include <dev/ofw/ofw_bus_subr.h>
-
-#include <dev/spibus/spi.h>
-#include <dev/spibus/spibusvar.h>
-
-#include <dev/extres/clk/clk.h>
-#include <dev/extres/hwreset/hwreset.h>
-
-#include "spibus_if.h"
-
-#define	RK_SPI_CTRLR0		0x0000
-#define		CTRLR0_OPM_MASTER	(0 << 20)
-#define		CTRLR0_XFM_TR		(0 << 18)
-#define		CTRLR0_FRF_MOTO		(0 << 16)
-#define		CTRLR0_BHT_8BIT		(1 << 13)
-#define		CTRLR0_EM_BIG		(1 << 11)
-#define		CTRLR0_SSD_ONE		(1 << 10)
-#define		CTRLR0_SCPOL		(1 <<  7)
-#define		CTRLR0_SCPH		(1 <<  6)
-#define		CTRLR0_DFS_8BIT		(1 <<  0)
-#define	RK_SPI_CTRLR1		0x0004
-#define	RK_SPI_ENR		0x0008
-#define	RK_SPI_SER		0x000c
-#define	RK_SPI_BAUDR		0x0010
-#define	RK_SPI_TXFTLR		0x0014
-#define	RK_SPI_RXFTLR		0x0018
-#define	RK_SPI_TXFLR		0x001c
-#define	RK_SPI_RXFLR		0x0020
-#define	RK_SPI_SR		0x0024
-#define		SR_BUSY			(1 <<  0)
-#define	RK_SPI_IPR		0x0028
-#define	RK_SPI_IMR		0x002c
-#define		IMR_RFFIM		(1 <<  4)
-#define		IMR_TFEIM		(1 <<  0)
-#define	RK_SPI_ISR		0x0030
-#define		ISR_RFFIS		(1 <<  4)
-#define		ISR_TFEIS		(1 <<  0)
-#define	RK_SPI_RISR		0x0034
-#define	RK_SPI_ICR		0x0038
-#define	RK_SPI_DMACR		0x003c
-#define	RK_SPI_DMATDLR		0x0040
-#define	RK_SPI_DMARDLR		0x0044
-#define	RK_SPI_TXDR		0x0400
-#define	RK_SPI_RXDR		0x0800
-
-#define	CS_MAX			1
-
-static struct ofw_compat_data compat_data[] = {
-	{ "rockchip,rk3328-spi",		1 },
-	{ "rockchip,rk3399-spi",		1 },
-	{ NULL,					0 }
-};
-
-static struct resource_spec rk_spi_spec[] = {
-	{ SYS_RES_MEMORY,	0,	RF_ACTIVE },
-	{ SYS_RES_IRQ,		0,	RF_ACTIVE | RF_SHAREABLE },
-	{ -1, 0 }
-};
-
-struct rk_spi_softc {
-	device_t	dev;
-	device_t	spibus;
-	struct resource	*res[2];
-	struct mtx	mtx;
-	clk_t		clk_apb;
-	clk_t		clk_spi;
-	void *		intrhand;
-	int		transfer;
-	uint32_t	fifo_size;
-	uint64_t	max_freq;
-
-	uint32_t	intreg;
-	uint8_t		*rxbuf;
-	uint32_t	rxidx;
-	uint8_t		*txbuf;
-	uint32_t	txidx;
-	uint32_t	txlen;
-	uint32_t	rxlen;
-};
-
-#define	RK_SPI_LOCK(sc)			mtx_lock(&(sc)->mtx)
-#define	RK_SPI_UNLOCK(sc)		mtx_unlock(&(sc)->mtx)
-#define	RK_SPI_READ_4(sc, reg)		bus_read_4((sc)->res[0], (reg))
-#define	RK_SPI_WRITE_4(sc, reg, val)	bus_write_4((sc)->res[0], (reg), (val))
-
-static int rk_spi_probe(device_t dev);
-static int rk_spi_attach(device_t dev);
-static int rk_spi_detach(device_t dev);
-static void rk_spi_intr(void *arg);
-
-static void
-rk_spi_enable_chip(struct rk_spi_softc *sc, int enable)
-{
-
-	RK_SPI_WRITE_4(sc, RK_SPI_ENR, enable ? 1 : 0);
-}
-
-static int
-rk_spi_set_cs(struct rk_spi_softc *sc, uint32_t cs, bool active)
-{
-	uint32_t reg;
-
-	if (cs & SPIBUS_CS_HIGH) {
-		device_printf(sc->dev, "SPIBUS_CS_HIGH is not supported\n");
-		return (EINVAL);
-	}
-
-	if (cs > CS_MAX)
-		return (EINVAL);
-
-	reg = RK_SPI_READ_4(sc, RK_SPI_SER);
-	if (active)
-		reg |= (1 << cs);
-	else
-		reg &= ~(1 << cs);
-	RK_SPI_WRITE_4(sc, RK_SPI_SER, reg);
-
-	return (0);
-}
-
-static void
-rk_spi_hw_setup(struct rk_spi_softc *sc, uint32_t mode, uint32_t freq)
-{
-	uint32_t cr0;
-	uint32_t div;
-
-	cr0 =  CTRLR0_OPM_MASTER | CTRLR0_XFM_TR | CTRLR0_FRF_MOTO |
-	    CTRLR0_BHT_8BIT | CTRLR0_EM_BIG | CTRLR0_SSD_ONE |
-	    CTRLR0_DFS_8BIT;
-
-	if (mode & SPIBUS_MODE_CPHA)
-		cr0 |= CTRLR0_SCPH;
-	if (mode & SPIBUS_MODE_CPOL)
-		cr0 |= CTRLR0_SCPOL;
-
-	/* minimum divider is 2 */
-	if (sc->max_freq < freq*2) {
-		clk_set_freq(sc->clk_spi, 2 * freq, CLK_SET_ROUND_DOWN);
-		clk_get_freq(sc->clk_spi, &sc->max_freq);
-	}
-
-	div = ((sc->max_freq + freq - 1) / freq);
-	div = (div + 1) & 0xfffe;
-	RK_SPI_WRITE_4(sc, RK_SPI_BAUDR, div);
-
-	RK_SPI_WRITE_4(sc, RK_SPI_CTRLR0, cr0);
-}
-
-static uint32_t
-rk_spi_fifo_size(struct rk_spi_softc *sc)
-{
-	uint32_t txftlr, reg;
-
-	for (txftlr = 2; txftlr < 32; txftlr++) {
-		RK_SPI_WRITE_4(sc, RK_SPI_TXFTLR, txftlr);
-		reg = RK_SPI_READ_4(sc, RK_SPI_TXFTLR);
-		if (reg != txftlr)
-			break;
-	}
-	RK_SPI_WRITE_4(sc, RK_SPI_TXFTLR, 0);
-
-	if (txftlr == 31)
-		return 0;
-
-	return txftlr;
-}
-
-static void
-rk_spi_empty_rxfifo(struct rk_spi_softc *sc)
-{
-	uint32_t rxlevel;
-	rxlevel = RK_SPI_READ_4(sc, RK_SPI_RXFLR);
-	while (sc->rxidx < sc->rxlen &&
-	    (rxlevel-- > 0)) {
-		sc->rxbuf[sc->rxidx++] = (uint8_t)RK_SPI_READ_4(sc, RK_SPI_RXDR);
-	}
-}
-
-static void
-rk_spi_fill_txfifo(struct rk_spi_softc *sc)
-{
-	uint32_t txlevel;
-	txlevel = RK_SPI_READ_4(sc, RK_SPI_TXFLR);
-	int cnt = 0;
-
-	while (sc->txidx < sc->txlen && txlevel < sc->fifo_size) {
-		RK_SPI_WRITE_4(sc, RK_SPI_TXDR, sc->txbuf[sc->txidx++]);
-		txlevel++;
-		cnt++;
-	}
-
-	if (sc->txidx != sc->txlen)
-		sc->intreg |= (IMR_TFEIM  | IMR_RFFIM);
-}
-
-static int
-rk_spi_xfer_buf(struct rk_spi_softc *sc, void *rxbuf, void *txbuf, uint32_t len)
-{
-	int err;
-
-	if (len == 0)
-		return (0);
-
-	sc->rxbuf = rxbuf;
-	sc->rxlen = len;
-	sc->rxidx = 0;
-	sc->txbuf = txbuf;
-	sc->txlen = len;
-	sc->txidx = 0;
-	sc->intreg = 0;
-	rk_spi_fill_txfifo(sc);
-
-	RK_SPI_WRITE_4(sc, RK_SPI_IMR, sc->intreg);
-
-	err = 0;
-	while (err == 0 && sc->intreg != 0)
-		err = msleep(sc, &sc->mtx, 0, "rk_spi", 10 * hz);
-
-	while (err == 0 && sc->rxidx != sc->txidx) {
-		/* read residual data from RX fifo */
-		rk_spi_empty_rxfifo(sc);
-	}
-
-	if (sc->rxidx != sc->rxlen || sc->txidx != sc->txlen)
-		err = EIO;
-
-	return (err);
-}
-
-static int
-rk_spi_probe(device_t dev)
-{
-	if (!ofw_bus_status_okay(dev))
-		return (ENXIO);
-
-	if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
-		return (ENXIO);
-
-	device_set_desc(dev, "Rockchip SPI");
-	return (BUS_PROBE_DEFAULT);
-}
-
-static int
-rk_spi_attach(device_t dev)
-{
-	struct rk_spi_softc *sc;
-	int error;
-
-	sc = device_get_softc(dev);
-	sc->dev = dev;
-
-	mtx_init(&sc->mtx, device_get_nameunit(dev), NULL, MTX_DEF);
-
-	if (bus_alloc_resources(dev, rk_spi_spec, sc->res) != 0) {
-		device_printf(dev, "cannot allocate resources for device\n");
-		error = ENXIO;
-		goto fail;
-	}
-
-	if (bus_setup_intr(dev, sc->res[1],
-	    INTR_TYPE_MISC | INTR_MPSAFE, NULL, rk_spi_intr, sc,
-	    &sc->intrhand)) {
-		bus_release_resources(dev, rk_spi_spec, sc->res);
-		device_printf(dev, "cannot setup interrupt handler\n");
-		return (ENXIO);
-	}
-
-	/* Activate the module clock. */
-	error = clk_get_by_ofw_name(dev, 0, "apb_pclk", &sc->clk_apb);
-	if (error != 0) {
-		device_printf(dev, "cannot get apb_pclk clock\n");
-		goto fail;
-	}
-	error = clk_get_by_ofw_name(dev, 0, "spiclk", &sc->clk_spi);
-	if (error != 0) {
-		device_printf(dev, "cannot get spiclk clock\n");
-		goto fail;
-	}
-	error = clk_enable(sc->clk_apb);
-	if (error != 0) {
-		device_printf(dev, "cannot enable ahb clock\n");
-		goto fail;
-	}
-	error = clk_enable(sc->clk_spi);
-	if (error != 0) {
-		device_printf(dev, "cannot enable spiclk clock\n");
-		goto fail;
-	}
-	clk_get_freq(sc->clk_spi, &sc->max_freq);
-
-	sc->fifo_size = rk_spi_fifo_size(sc);
-	if (sc->fifo_size == 0) {
-		device_printf(dev, "failed to get fifo size\n");
-		goto fail;
-	}
-
-	sc->spibus = device_add_child(dev, "spibus", -1);
-
-	RK_SPI_WRITE_4(sc, RK_SPI_IMR, 0);
-	RK_SPI_WRITE_4(sc, RK_SPI_TXFTLR, sc->fifo_size/2 - 1);
-	RK_SPI_WRITE_4(sc, RK_SPI_RXFTLR, sc->fifo_size/2 - 1);
-
-	return (bus_generic_attach(dev));
-
-fail:
-	rk_spi_detach(dev);
-	return (error);
-}
-
-static int
-rk_spi_detach(device_t dev)
-{
-	struct rk_spi_softc *sc;
-
-	sc = device_get_softc(dev);
-
-	bus_generic_detach(sc->dev);
-	if (sc->spibus != NULL)
-		device_delete_child(dev, sc->spibus);
-
-	if (sc->clk_spi != NULL)
-		clk_release(sc->clk_spi);
-	if (sc->clk_apb)
-		clk_release(sc->clk_apb);
-
-	if (sc->intrhand != NULL)
-		bus_teardown_intr(sc->dev, sc->res[1], sc->intrhand);
-
-	bus_release_resources(dev, rk_spi_spec, sc->res);
-	mtx_destroy(&sc->mtx);
-
-	return (0);
-}
-
-static void
-rk_spi_intr(void *arg)
-{
-	struct rk_spi_softc *sc;
-	uint32_t intreg, isr;
-
-	sc = arg;
-
-	RK_SPI_LOCK(sc);
-	intreg = RK_SPI_READ_4(sc, RK_SPI_IMR);
-	isr = RK_SPI_READ_4(sc, RK_SPI_ISR);
-	RK_SPI_WRITE_4(sc, RK_SPI_ICR, isr);
-
-	if (isr & ISR_RFFIS)
-		rk_spi_empty_rxfifo(sc);
-
-	if (isr & ISR_TFEIS)
-		rk_spi_fill_txfifo(sc);
-
-	/* no bytes left, disable interrupt */
-	if (sc->txidx == sc->txlen) {
-		sc->intreg = 0;
-		wakeup(sc);
-	}
-
-	if (sc->intreg != intreg) {
-		(void)RK_SPI_WRITE_4(sc, RK_SPI_IMR, sc->intreg);
-		(void)RK_SPI_READ_4(sc, RK_SPI_IMR);
-	}
-
-	RK_SPI_UNLOCK(sc);
-}
-
-static phandle_t
-rk_spi_get_node(device_t bus, device_t dev)
-{
-
-	return ofw_bus_get_node(bus);
-}
-
-static int
-rk_spi_transfer(device_t dev, device_t child, struct spi_command *cmd)
-{
-	struct rk_spi_softc *sc;
-	uint32_t cs, mode, clock;
-	int err = 0;
-
-	sc = device_get_softc(dev);
-
-	spibus_get_cs(child, &cs);
-	spibus_get_clock(child, &clock);
-	spibus_get_mode(child, &mode);
-
-	RK_SPI_LOCK(sc);
-	rk_spi_hw_setup(sc, mode, clock);
-	rk_spi_enable_chip(sc, 1);
-	err = rk_spi_set_cs(sc, cs, true);
-	if (err != 0) {
-		rk_spi_enable_chip(sc, 0);
-		RK_SPI_UNLOCK(sc);
-		return (err);
-	}
-
-	/* Transfer command then data bytes. */
-	err = 0;
-	if (cmd->tx_cmd_sz > 0)
-		err = rk_spi_xfer_buf(sc, cmd->rx_cmd, cmd->tx_cmd,
-		    cmd->tx_cmd_sz);
-	if (cmd->tx_data_sz > 0 && err == 0)
-		err = rk_spi_xfer_buf(sc, cmd->rx_data, cmd->tx_data,
-		    cmd->tx_data_sz);
-
-	rk_spi_set_cs(sc, cs, false);
-	rk_spi_enable_chip(sc, 0);
-	RK_SPI_UNLOCK(sc);
-
-	return (err);
-}
-
-static device_method_t rk_spi_methods[] = {
-	/* Device interface */
-	DEVMETHOD(device_probe,		rk_spi_probe),
-	DEVMETHOD(device_attach,	rk_spi_attach),
-	DEVMETHOD(device_detach,	rk_spi_detach),
-
-        /* spibus_if  */
-	DEVMETHOD(spibus_transfer,	rk_spi_transfer),
-
-        /* ofw_bus_if */
-	DEVMETHOD(ofw_bus_get_node,	rk_spi_get_node),
-
-	DEVMETHOD_END
-};
-
-static driver_t rk_spi_driver = {
-	"spi",
-	rk_spi_methods,
-	sizeof(struct rk_spi_softc),
-};
-
-DRIVER_MODULE(rk_spi, simplebus, rk_spi_driver, 0, 0);
-DRIVER_MODULE(ofw_spibus, rk_spi, ofw_spibus_driver, 0, 0);
-MODULE_DEPEND(rk_spi, ofw_spibus, 1, 1, 1);
-OFWBUS_PNP_INFO(compat_data);