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Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next

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This commit is contained in:
Mark Brown
2014-03-30 00:51:17 +00:00
parent 3bcbc14911 8fc39b5166 3a44623d5e 3d8c869796 5c5989ccd3 cdd1945bde fb534f1075 14c48ab2d9 7984b5ca5c
commit 6e07b9179a
30 changed files with 29 additions and 146 deletions
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78
drivers/spi/spi-octeon.c
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@ -11,7 +11,6 @@
#include <linux/spi/spi.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/of.h>
@ -33,13 +32,6 @@ struct octeon_spi {
u64 cs_enax;
};
struct octeon_spi_setup {
u32 max_speed_hz;
u8 chip_select;
u8 mode;
u8 bits_per_word;
};
static void octeon_spi_wait_ready(struct octeon_spi *p)
{
union cvmx_mpi_sts mpi_sts;
@ -57,6 +49,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
struct spi_transfer *xfer,
bool last_xfer)
{
struct spi_device *spi = msg->spi;
union cvmx_mpi_cfg mpi_cfg;
union cvmx_mpi_tx mpi_tx;
unsigned int clkdiv;
@ -68,18 +61,11 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
int len;
int i;
struct octeon_spi_setup *msg_setup = spi_get_ctldata(msg->spi);
speed_hz = msg_setup->max_speed_hz;
mode = msg_setup->mode;
mode = spi->mode;
cpha = mode & SPI_CPHA;
cpol = mode & SPI_CPOL;
if (xfer->speed_hz)
speed_hz = xfer->speed_hz;
if (speed_hz > OCTEON_SPI_MAX_CLOCK_HZ)
speed_hz = OCTEON_SPI_MAX_CLOCK_HZ;
speed_hz = xfer->speed_hz ? : spi->max_speed_hz;
clkdiv = octeon_get_io_clock_rate() / (2 * speed_hz);
@ -93,8 +79,8 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
mpi_cfg.s.cslate = cpha ? 1 : 0;
mpi_cfg.s.enable = 1;
if (msg_setup->chip_select < 4)
p->cs_enax |= 1ull << (12 + msg_setup->chip_select);
if (spi->chip_select < 4)
p->cs_enax |= 1ull << (12 + spi->chip_select);
mpi_cfg.u64 |= p->cs_enax;
if (mpi_cfg.u64 != p->last_cfg) {
@ -114,7 +100,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
cvmx_write_csr(p->register_base + OCTEON_SPI_DAT0 + (8 * i), d);
}
mpi_tx.u64 = 0;
mpi_tx.s.csid = msg_setup->chip_select;
mpi_tx.s.csid = spi->chip_select;
mpi_tx.s.leavecs = 1;
mpi_tx.s.txnum = tx_buf ? OCTEON_SPI_MAX_BYTES : 0;
mpi_tx.s.totnum = OCTEON_SPI_MAX_BYTES;
@ -139,7 +125,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
}
mpi_tx.u64 = 0;
mpi_tx.s.csid = msg_setup->chip_select;
mpi_tx.s.csid = spi->chip_select;
if (last_xfer)
mpi_tx.s.leavecs = xfer->cs_change;
else
@ -169,17 +155,9 @@ static int octeon_spi_transfer_one_message(struct spi_master *master,
int status = 0;
struct spi_transfer *xfer;
/*
* We better have set the configuration via a call to .setup
* before we get here.
*/
if (spi_get_ctldata(msg->spi) == NULL) {
status = -EINVAL;
goto err;
}
list_for_each_entry(xfer, &msg->transfers, transfer_list) {
bool last_xfer = &xfer->transfer_list == msg->transfers.prev;
bool last_xfer = list_is_last(&xfer->transfer_list,
&msg->transfers);
int r = octeon_spi_do_transfer(p, msg, xfer, last_xfer);
if (r < 0) {
status = r;
@ -194,41 +172,6 @@ err:
return status;
}
static struct octeon_spi_setup *octeon_spi_new_setup(struct spi_device *spi)
{
struct octeon_spi_setup *setup = kzalloc(sizeof(*setup), GFP_KERNEL);
if (!setup)
return NULL;
setup->max_speed_hz = spi->max_speed_hz;
setup->chip_select = spi->chip_select;
setup->mode = spi->mode;
setup->bits_per_word = spi->bits_per_word;
return setup;
}
static int octeon_spi_setup(struct spi_device *spi)
{
struct octeon_spi_setup *new_setup;
struct octeon_spi_setup *old_setup = spi_get_ctldata(spi);
new_setup = octeon_spi_new_setup(spi);
if (!new_setup)
return -ENOMEM;
spi_set_ctldata(spi, new_setup);
kfree(old_setup);
return 0;
}
static void octeon_spi_cleanup(struct spi_device *spi)
{
struct octeon_spi_setup *old_setup = spi_get_ctldata(spi);
spi_set_ctldata(spi, NULL);
kfree(old_setup);
}
static int octeon_spi_probe(struct platform_device *pdev)
{
struct resource *res_mem;
@ -264,10 +207,9 @@ static int octeon_spi_probe(struct platform_device *pdev)
SPI_LSB_FIRST |
SPI_3WIRE;
master->setup = octeon_spi_setup;
master->cleanup = octeon_spi_cleanup;
master->transfer_one_message = octeon_spi_transfer_one_message;
master->bits_per_word_mask = SPI_BPW_MASK(8);
master->max_speed_hz = OCTEON_SPI_MAX_CLOCK_HZ;
master->dev.of_node = pdev->dev.of_node;
err = devm_spi_register_master(&pdev->dev, master);