*
* Derived from drivers/spi/mpc8xxx_spi.c
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
#include <spi.h>
#include <asm/io.h>
-#include <asm/arch/kirkwood.h>
-#include <asm/arch/spi.h>
+#include <asm/arch/soc.h>
+#ifdef CONFIG_KIRKWOOD
#include <asm/arch/mpp.h>
+#endif
+#include <asm/arch-mvebu/spi.h>
-static struct kwspi_registers *spireg = (struct kwspi_registers *)KW_SPI_BASE;
+static struct kwspi_registers *spireg =
+ (struct kwspi_registers *)MVEBU_SPI_BASE;
-u32 cs_spi_mpp_back[2];
+#ifdef CONFIG_KIRKWOOD
+static u32 cs_spi_mpp_back[2];
+#endif
struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
unsigned int max_hz, unsigned int mode)
{
struct spi_slave *slave;
u32 data;
- u32 kwspi_mpp_config[] = { 0, 0 };
+#ifdef CONFIG_KIRKWOOD
+ static const u32 kwspi_mpp_config[2][2] = {
+ { MPP0_SPI_SCn, 0 }, /* if cs == 0 */
+ { MPP7_SPI_SCn, 0 } /* if cs != 0 */
+ };
+#endif
if (!spi_cs_is_valid(bus, cs))
return NULL;
- slave = malloc(sizeof(struct spi_slave));
+ slave = spi_alloc_slave_base(bus, cs);
if (!slave)
return NULL;
- slave->bus = bus;
- slave->cs = cs;
-
- writel(~KWSPI_CSN_ACT | KWSPI_SMEMRDY, &spireg->ctrl);
+ writel(KWSPI_SMEMRDY, &spireg->ctrl);
/* calculate spi clock prescaller using max_hz */
data = ((CONFIG_SYS_TCLK / 2) / max_hz) + 0x10;
/* program spi clock prescaller using max_hz */
writel(KWSPI_ADRLEN_3BYTE | data, &spireg->cfg);
- debug("data = 0x%08x \n", data);
+ debug("data = 0x%08x\n", data);
writel(KWSPI_SMEMRDIRQ, &spireg->irq_cause);
writel(KWSPI_IRQMASK, &spireg->irq_mask);
+#ifdef CONFIG_KIRKWOOD
/* program mpp registers to select SPI_CSn */
- if (cs) {
- kwspi_mpp_config[0] = MPP7_SPI_SCn;
- } else {
- kwspi_mpp_config[0] = MPP0_SPI_SCn;
- }
- kirkwood_mpp_conf(kwspi_mpp_config, cs_spi_mpp_back);
+ kirkwood_mpp_conf(kwspi_mpp_config[cs ? 1 : 0], cs_spi_mpp_back);
+#endif
return slave;
}
void spi_free_slave(struct spi_slave *slave)
{
+#ifdef CONFIG_KIRKWOOD
kirkwood_mpp_conf(cs_spi_mpp_back, NULL);
+#endif
free(slave);
}
/* set new spi mpp and save current mpp config */
kirkwood_mpp_conf(spi_mpp_config, spi_mpp_backup);
-
#endif
return board_spi_claim_bus(slave);
*/
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
- return (bus == 0 && (cs == 0 || cs == 1));
+ return bus == 0 && (cs == 0 || cs == 1);
}
#endif
void spi_cs_activate(struct spi_slave *slave)
{
- writel(readl(&spireg->ctrl) | KWSPI_IRQUNMASK, &spireg->ctrl);
+ setbits_le32(&spireg->ctrl, KWSPI_CSN_ACT);
}
void spi_cs_deactivate(struct spi_slave *slave)
{
- writel(readl(&spireg->ctrl) & KWSPI_IRQMASK, &spireg->ctrl);
+ clrbits_le32(&spireg->ctrl, KWSPI_CSN_ACT);
}
int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
* handle data in 8-bit chunks
* TBD: 2byte xfer mode to be enabled
*/
- writel(((readl(&spireg->cfg) & ~KWSPI_XFERLEN_MASK) |
- KWSPI_XFERLEN_1BYTE), &spireg->cfg);
+ clrsetbits_le32(&spireg->cfg, KWSPI_XFERLEN_MASK, KWSPI_XFERLEN_1BYTE);
while (bitlen > 4) {
debug("loopstart bitlen %d\n", bitlen);
/* Shift data so it's msb-justified */
if (dout)
- tmpdout = *(u32 *) dout & 0x0ff;
+ tmpdout = *(u32 *)dout & 0xff;
- writel(~KWSPI_SMEMRDIRQ, &spireg->irq_cause);
+ clrbits_le32(&spireg->irq_cause, KWSPI_SMEMRDIRQ);
writel(tmpdout, &spireg->dout); /* Write the data out */
debug("*** spi_xfer: ... %08x written, bitlen %d\n",
tmpdout, bitlen);
if (readl(&spireg->irq_cause) & KWSPI_SMEMRDIRQ) {
isread = 1;
tmpdin = readl(&spireg->din);
- debug
- ("spi_xfer: din %p..%08x read\n",
- din, tmpdin);
+ debug("spi_xfer: din %p..%08x read\n",
+ din, tmpdin);
if (din) {
- *((u8 *) din) = (u8) tmpdin;
+ *((u8 *)din) = (u8)tmpdin;
din += 1;
}
if (dout)
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