1 /*-
15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62     bus_space_write_4((_sc)->sc_bst, (_sc)->sc_bsh, (_off), (_val))
64     bus_space_read_4((_sc)->sc_bst, (_sc)->sc_bsh, (_off))
65 #define	A37X0_SPI_LOCK(_sc)	mtx_lock(&(_sc)->sc_mtx)
66 #define	A37X0_SPI_UNLOCK(_sc)	mtx_unlock(&(_sc)->sc_mtx)
72  * to retrieve the actual TBG and PLL settings.
107 	{ "marvell,armada-3700-spi",	1 },
134 	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)  in a37x0_spi_probe()
150 	sc->sc_dev = dev;  in a37x0_spi_attach()
153 	sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,  in a37x0_spi_attach()
155 	if (!sc->sc_mem_res) {  in a37x0_spi_attach()
160 	sc->sc_bst = rman_get_bustag(sc->sc_mem_res);  in a37x0_spi_attach()
161 	sc->sc_bsh = rman_get_bushandle(sc->sc_mem_res);  in a37x0_spi_attach()
164 	sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,  in a37x0_spi_attach()
166 	if (!sc->sc_irq_res) {  in a37x0_spi_attach()
167 		bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);  in a37x0_spi_attach()
181 		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);  in a37x0_spi_attach()
182 		bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);  in a37x0_spi_attach()
201 	if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE,  in a37x0_spi_attach()
202 	    NULL, a37x0_spi_intr, sc, &sc->sc_intrhand)) {  in a37x0_spi_attach()
203 		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);  in a37x0_spi_attach()
204 		bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);  in a37x0_spi_attach()
209 	mtx_init(&sc->sc_mtx, "a37x0_spi", NULL, MTX_DEF);  in a37x0_spi_attach()
211 	/* Read the controller max-frequency. */  in a37x0_spi_attach()
212 	if (OF_getencprop(ofw_bus_get_node(dev), "spi-max-frequency", &maxfreq,  in a37x0_spi_attach()
213 	    sizeof(maxfreq)) == -1)  in a37x0_spi_attach()
215 	sc->sc_maxfreq = maxfreq;  in a37x0_spi_attach()
233 	mtx_destroy(&sc->sc_mtx);  in a37x0_spi_detach()
234 	if (sc->sc_intrhand)  in a37x0_spi_detach()
235 		bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intrhand);  in a37x0_spi_detach()
236 	if (sc->sc_irq_res)  in a37x0_spi_detach()
237 		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);  in a37x0_spi_detach()
238 	if (sc->sc_mem_res)  in a37x0_spi_detach()
239 		bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);  in a37x0_spi_detach()
249 	uint8_t *p;  in a37x0_spi_rx_byte()  local
251 	if (sc->sc_read == sc->sc_len)  in a37x0_spi_rx_byte()
253 	cmd = sc->sc_cmd;  in a37x0_spi_rx_byte()
254 	p = (uint8_t *)cmd->rx_cmd;  in a37x0_spi_rx_byte()
255 	read = sc->sc_read++;  in a37x0_spi_rx_byte()
256 	if (read >= cmd->rx_cmd_sz) {  in a37x0_spi_rx_byte()
257 		p = (uint8_t *)cmd->rx_data;  in a37x0_spi_rx_byte()
258 		read -= cmd->rx_cmd_sz;  in a37x0_spi_rx_byte()
260 	p[read] = A37X0_SPI_READ(sc, A37X0_SPI_DATA_IN) & 0xff;  in a37x0_spi_rx_byte()
268 	uint8_t *p;  in a37x0_spi_tx_byte()  local
270 	if (sc->sc_written == sc->sc_len)  in a37x0_spi_tx_byte()
272 	cmd = sc->sc_cmd;  in a37x0_spi_tx_byte()
273 	p = (uint8_t *)cmd->tx_cmd;  in a37x0_spi_tx_byte()
274 	written = sc->sc_written++;  in a37x0_spi_tx_byte()
275 	if (written >= cmd->tx_cmd_sz) {  in a37x0_spi_tx_byte()
276 		p = (uint8_t *)cmd->tx_data;  in a37x0_spi_tx_byte()
277 		written -= cmd->tx_cmd_sz;  in a37x0_spi_tx_byte()
279 	A37X0_SPI_WRITE(sc, A37X0_SPI_DATA_OUT, p[written]);  in a37x0_spi_tx_byte()
287 	if (sc->sc_maxfreq > 0 && clock > sc->sc_maxfreq)  in a37x0_spi_set_clock()
288 		clock = sc->sc_maxfreq;  in a37x0_spi_set_clock()
346 	if ((sc->sc_flags & A37X0_SPI_BUSY) == 0) {  in a37x0_spi_intr()
359 	if (sc->sc_written == sc->sc_len && sc->sc_read == sc->sc_len)  in a37x0_spi_intr()
360 		wakeup(sc->sc_dev);  in a37x0_spi_intr()
374 	KASSERT(cmd->tx_cmd_sz == cmd->rx_cmd_sz,  in a37x0_spi_transfer()
376 	KASSERT(cmd->tx_data_sz == cmd->rx_data_sz,  in a37x0_spi_transfer()
407 	while (sc->sc_flags & A37X0_SPI_BUSY)  in a37x0_spi_transfer()
408 		mtx_sleep(dev, &sc->sc_mtx, 0, "a37x0_spi", 0);  in a37x0_spi_transfer()
411 	sc->sc_flags = A37X0_SPI_BUSY;  in a37x0_spi_transfer()
421 	/* Save a pointer to the SPI command. */  in a37x0_spi_transfer()
422 	sc->sc_cmd = cmd;  in a37x0_spi_transfer()
423 	sc->sc_read = 0;  in a37x0_spi_transfer()
424 	sc->sc_written = 0;  in a37x0_spi_transfer()
425 	sc->sc_len = cmd->tx_cmd_sz + cmd->tx_data_sz;  in a37x0_spi_transfer()
431 	while ((sc->sc_len - sc->sc_written) > 0) {  in a37x0_spi_transfer()
438 		while (--timeout > 0) {  in a37x0_spi_transfer()
455 	sc->sc_flags = 0;  in a37x0_spi_transfer()