diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-fsl-espi.c | 270 |
1 files changed, 143 insertions, 127 deletions
diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c index 7a903434c881..8539f0584a8a 100644 --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -93,30 +93,49 @@ #define AUTOSUSPEND_TIMEOUT 2000 +struct fsl_espi { + struct device *dev; + void __iomem *reg_base; + + const void *tx; + void *rx; + + unsigned int rx_len; + unsigned int tx_len; + unsigned int rxskip; + + u8 *local_buf; + spinlock_t lock; + + u32 spibrg; /* SPIBRG input clock */ + + struct completion done; +}; + struct fsl_espi_cs { u32 hw_mode; }; -static inline u32 fsl_espi_read_reg(struct mpc8xxx_spi *mspi, int offset) +static inline u32 fsl_espi_read_reg(struct fsl_espi *espi, int offset) { - return ioread32be(mspi->reg_base + offset); + return ioread32be(espi->reg_base + offset); } -static inline u8 fsl_espi_read_reg8(struct mpc8xxx_spi *mspi, int offset) +static inline u8 fsl_espi_read_reg8(struct fsl_espi *espi, int offset) { - return ioread8(mspi->reg_base + offset); + return ioread8(espi->reg_base + offset); } -static inline void fsl_espi_write_reg(struct mpc8xxx_spi *mspi, int offset, +static inline void fsl_espi_write_reg(struct fsl_espi *espi, int offset, u32 val) { - iowrite32be(val, mspi->reg_base + offset); + iowrite32be(val, espi->reg_base + offset); } -static inline void fsl_espi_write_reg8(struct mpc8xxx_spi *mspi, int offset, +static inline void fsl_espi_write_reg8(struct fsl_espi *espi, int offset, u8 val) { - iowrite8(val, mspi->reg_base + offset); + iowrite8(val, espi->reg_base + offset); } static void fsl_espi_memcpy_swab(void *to, const void *from, @@ -146,26 +165,26 @@ static void fsl_espi_memcpy_swab(void *to, const void *from, } static void fsl_espi_copy_to_buf(struct spi_message *m, - struct mpc8xxx_spi *mspi) + struct fsl_espi *espi) { struct spi_transfer *t; - u8 *buf = mspi->local_buf; + u8 *buf = espi->local_buf; list_for_each_entry(t, &m->transfers, transfer_list) { if (t->tx_buf) fsl_espi_memcpy_swab(buf, t->tx_buf, m, t); /* In RXSKIP mode controller shifts out zeros internally */ - else if (!mspi->rxskip) + else if (!espi->rxskip) memset(buf, 0, t->len); buf += t->len; } } static void fsl_espi_copy_from_buf(struct spi_message *m, - struct mpc8xxx_spi *mspi) + struct fsl_espi *espi) { struct spi_transfer *t; - u8 *buf = mspi->local_buf; + u8 *buf = espi->local_buf; list_for_each_entry(t, &m->transfers, transfer_list) { if (t->rx_buf) @@ -176,11 +195,11 @@ static void fsl_espi_copy_from_buf(struct spi_message *m, static int fsl_espi_check_message(struct spi_message *m) { - struct mpc8xxx_spi *mspi = spi_master_get_devdata(m->spi->master); + struct fsl_espi *espi = spi_master_get_devdata(m->spi->master); struct spi_transfer *t, *first; if (m->frame_length > SPCOM_TRANLEN_MAX) { - dev_err(mspi->dev, "message too long, size is %u bytes\n", + dev_err(espi->dev, "message too long, size is %u bytes\n", m->frame_length); return -EMSGSIZE; } @@ -191,7 +210,7 @@ static int fsl_espi_check_message(struct spi_message *m) list_for_each_entry(t, &m->transfers, transfer_list) { if (first->bits_per_word != t->bits_per_word || first->speed_hz != t->speed_hz) { - dev_err(mspi->dev, "bits_per_word/speed_hz should be the same for all transfers\n"); + dev_err(espi->dev, "bits_per_word/speed_hz should be the same for all transfers\n"); return -EINVAL; } } @@ -199,7 +218,7 @@ static int fsl_espi_check_message(struct spi_message *m) /* ESPI supports MSB-first transfers for word size 8 / 16 only */ if (!(m->spi->mode & SPI_LSB_FIRST) && first->bits_per_word != 8 && first->bits_per_word != 16) { - dev_err(mspi->dev, + dev_err(espi->dev, "MSB-first transfer not supported for wordsize %u\n", first->bits_per_word); return -EINVAL; @@ -239,41 +258,41 @@ static unsigned int fsl_espi_check_rxskip_mode(struct spi_message *m) return i == 2 ? rxskip : 0; } -static void fsl_espi_fill_tx_fifo(struct mpc8xxx_spi *mspi, u32 events) +static void fsl_espi_fill_tx_fifo(struct fsl_espi *espi, u32 events) { u32 tx_fifo_avail; /* if events is zero transfer has not started and tx fifo is empty */ tx_fifo_avail = events ? SPIE_TXCNT(events) : FSL_ESPI_FIFO_SIZE; - while (tx_fifo_avail >= min(4U, mspi->tx_len) && mspi->tx_len) - if (mspi->tx_len >= 4) { - fsl_espi_write_reg(mspi, ESPI_SPITF, *(u32 *)mspi->tx); - mspi->tx += 4; - mspi->tx_len -= 4; + while (tx_fifo_avail >= min(4U, espi->tx_len) && espi->tx_len) + if (espi->tx_len >= 4) { + fsl_espi_write_reg(espi, ESPI_SPITF, *(u32 *)espi->tx); + espi->tx += 4; + espi->tx_len -= 4; tx_fifo_avail -= 4; } else { - fsl_espi_write_reg8(mspi, ESPI_SPITF, *(u8 *)mspi->tx); - mspi->tx += 1; - mspi->tx_len -= 1; + fsl_espi_write_reg8(espi, ESPI_SPITF, *(u8 *)espi->tx); + espi->tx += 1; + espi->tx_len -= 1; tx_fifo_avail -= 1; } } -static void fsl_espi_read_rx_fifo(struct mpc8xxx_spi *mspi, u32 events) +static void fsl_espi_read_rx_fifo(struct fsl_espi *espi, u32 events) { u32 rx_fifo_avail = SPIE_RXCNT(events); - while (rx_fifo_avail >= min(4U, mspi->rx_len) && mspi->rx_len) - if (mspi->rx_len >= 4) { - *(u32 *)mspi->rx = fsl_espi_read_reg(mspi, ESPI_SPIRF); - mspi->rx += 4; - mspi->rx_len -= 4; + while (rx_fifo_avail >= min(4U, espi->rx_len) && espi->rx_len) + if (espi->rx_len >= 4) { + *(u32 *)espi->rx = fsl_espi_read_reg(espi, ESPI_SPIRF); + espi->rx += 4; + espi->rx_len -= 4; rx_fifo_avail -= 4; } else { - *(u8 *)mspi->rx = fsl_espi_read_reg8(mspi, ESPI_SPIRF); - mspi->rx += 1; - mspi->rx_len -= 1; + *(u8 *)espi->rx = fsl_espi_read_reg8(espi, ESPI_SPIRF); + espi->rx += 1; + espi->rx_len -= 1; rx_fifo_avail -= 1; } } @@ -281,7 +300,7 @@ static void fsl_espi_read_rx_fifo(struct mpc8xxx_spi *mspi, u32 events) static void fsl_espi_setup_transfer(struct spi_device *spi, struct spi_transfer *t) { - struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master); + struct fsl_espi *espi = spi_master_get_devdata(spi->master); int bits_per_word = t ? t->bits_per_word : spi->bits_per_word; u32 pm, hz = t ? t->speed_hz : spi->max_speed_hz; struct fsl_espi_cs *cs = spi_get_ctldata(spi); @@ -292,16 +311,16 @@ static void fsl_espi_setup_transfer(struct spi_device *spi, cs->hw_mode |= CSMODE_LEN(bits_per_word - 1); - pm = DIV_ROUND_UP(mpc8xxx_spi->spibrg, hz * 4) - 1; + pm = DIV_ROUND_UP(espi->spibrg, hz * 4) - 1; if (pm > 15) { cs->hw_mode |= CSMODE_DIV16; - pm = DIV_ROUND_UP(mpc8xxx_spi->spibrg, hz * 16 * 4) - 1; + pm = DIV_ROUND_UP(espi->spibrg, hz * 16 * 4) - 1; WARN_ONCE(pm > 15, "%s: Requested speed is too low: %u Hz. Will use %u Hz instead.\n", dev_name(&spi->dev), hz, - mpc8xxx_spi->spibrg / (4 * 16 * (15 + 1))); + espi->spibrg / (4 * 16 * (15 + 1))); if (pm > 15) pm = 15; } @@ -310,77 +329,77 @@ static void fsl_espi_setup_transfer(struct spi_device *spi, /* don't write the mode register if the mode doesn't change */ if (cs->hw_mode != hw_mode_old) - fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPMODEx(spi->chip_select), + fsl_espi_write_reg(espi, ESPI_SPMODEx(spi->chip_select), cs->hw_mode); } static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t) { - struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master); + struct fsl_espi *espi = spi_master_get_devdata(spi->master); u32 mask, spcom; int ret; - mpc8xxx_spi->rx_len = t->len; - mpc8xxx_spi->tx_len = t->len; + espi->rx_len = t->len; + espi->tx_len = t->len; - mpc8xxx_spi->tx = t->tx_buf; - mpc8xxx_spi->rx = t->rx_buf; + espi->tx = t->tx_buf; + espi->rx = t->rx_buf; - reinit_completion(&mpc8xxx_spi->done); + reinit_completion(&espi->done); /* Set SPCOM[CS] and SPCOM[TRANLEN] field */ spcom = SPCOM_CS(spi->chip_select); spcom |= SPCOM_TRANLEN(t->len - 1); /* configure RXSKIP mode */ - if (mpc8xxx_spi->rxskip) { - spcom |= SPCOM_RXSKIP(mpc8xxx_spi->rxskip); - mpc8xxx_spi->tx_len = mpc8xxx_spi->rxskip; - mpc8xxx_spi->rx_len = t->len - mpc8xxx_spi->rxskip; - mpc8xxx_spi->rx = t->rx_buf + mpc8xxx_spi->rxskip; + if (espi->rxskip) { + spcom |= SPCOM_RXSKIP(espi->rxskip); + espi->tx_len = espi->rxskip; + espi->rx_len = t->len - espi->rxskip; + espi->rx = t->rx_buf + espi->rxskip; if (t->rx_nbits == SPI_NBITS_DUAL) spcom |= SPCOM_DO; } - fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPCOM, spcom); + fsl_espi_write_reg(espi, ESPI_SPCOM, spcom); /* enable interrupts */ mask = SPIM_DON; - if (mpc8xxx_spi->rx_len > FSL_ESPI_FIFO_SIZE) + if (espi->rx_len > FSL_ESPI_FIFO_SIZE) mask |= SPIM_RXT; - fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPIM, mask); + fsl_espi_write_reg(espi, ESPI_SPIM, mask); /* Prevent filling the fifo from getting interrupted */ - spin_lock_irq(&mpc8xxx_spi->lock); - fsl_espi_fill_tx_fifo(mpc8xxx_spi, 0); - spin_unlock_irq(&mpc8xxx_spi->lock); + spin_lock_irq(&espi->lock); + fsl_espi_fill_tx_fifo(espi, 0); + spin_unlock_irq(&espi->lock); /* Won't hang up forever, SPI bus sometimes got lost interrupts... */ - ret = wait_for_completion_timeout(&mpc8xxx_spi->done, 2 * HZ); + ret = wait_for_completion_timeout(&espi->done, 2 * HZ); if (ret == 0) - dev_err(mpc8xxx_spi->dev, + dev_err(espi->dev, "Transaction hanging up (left %u tx bytes, %u rx bytes)\n", - mpc8xxx_spi->tx_len, mpc8xxx_spi->rx_len); + espi->tx_len, espi->rx_len); /* disable rx ints */ - fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPIM, 0); + fsl_espi_write_reg(espi, ESPI_SPIM, 0); return ret == 0 ? -ETIMEDOUT : 0; } static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans) { - struct mpc8xxx_spi *mspi = spi_master_get_devdata(m->spi->master); + struct fsl_espi *espi = spi_master_get_devdata(m->spi->master); struct spi_device *spi = m->spi; int ret; - mspi->rxskip = fsl_espi_check_rxskip_mode(m); - if (trans->rx_nbits == SPI_NBITS_DUAL && !mspi->rxskip) { - dev_err(mspi->dev, "Dual output mode requires RXSKIP mode!\n"); + espi->rxskip = fsl_espi_check_rxskip_mode(m); + if (trans->rx_nbits == SPI_NBITS_DUAL && !espi->rxskip) { + dev_err(espi->dev, "Dual output mode requires RXSKIP mode!\n"); return -EINVAL; } - fsl_espi_copy_to_buf(m, mspi); + fsl_espi_copy_to_buf(m, espi); fsl_espi_setup_transfer(spi, trans); ret = fsl_espi_bufs(spi, trans); @@ -389,7 +408,7 @@ static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans) udelay(trans->delay_usecs); if (!ret) - fsl_espi_copy_from_buf(m, mspi); + fsl_espi_copy_from_buf(m, espi); return ret; } @@ -397,7 +416,7 @@ static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans) static int fsl_espi_do_one_msg(struct spi_master *master, struct spi_message *m) { - struct mpc8xxx_spi *mspi = spi_master_get_devdata(m->spi->master); + struct fsl_espi *espi = spi_master_get_devdata(m->spi->master); unsigned int delay_usecs = 0, rx_nbits = 0; struct spi_transfer *t, trans = {}; int ret; @@ -420,8 +439,8 @@ static int fsl_espi_do_one_msg(struct spi_master *master, trans.speed_hz = t->speed_hz; trans.bits_per_word = t->bits_per_word; trans.delay_usecs = delay_usecs; - trans.tx_buf = mspi->local_buf; - trans.rx_buf = mspi->local_buf; + trans.tx_buf = espi->local_buf; + trans.rx_buf = espi->local_buf; trans.rx_nbits = rx_nbits; if (trans.len) @@ -439,7 +458,7 @@ out: static int fsl_espi_setup(struct spi_device *spi) { - struct mpc8xxx_spi *mpc8xxx_spi; + struct fsl_espi *espi; u32 loop_mode; struct fsl_espi_cs *cs = spi_get_ctldata(spi); @@ -453,12 +472,11 @@ static int fsl_espi_setup(struct spi_device *spi) spi_set_ctldata(spi, cs); } - mpc8xxx_spi = spi_master_get_devdata(spi->master); + espi = spi_master_get_devdata(spi->master); - pm_runtime_get_sync(mpc8xxx_spi->dev); + pm_runtime_get_sync(espi->dev); - cs->hw_mode = fsl_espi_read_reg(mpc8xxx_spi, - ESPI_SPMODEx(spi->chip_select)); + cs->hw_mode = fsl_espi_read_reg(espi, ESPI_SPMODEx(spi->chip_select)); /* mask out bits we are going to set */ cs->hw_mode &= ~(CSMODE_CP_BEGIN_EDGECLK | CSMODE_CI_INACTIVEHIGH | CSMODE_REV); @@ -471,16 +489,16 @@ static int fsl_espi_setup(struct spi_device *spi) cs->hw_mode |= CSMODE_REV; /* Handle the loop mode */ - loop_mode = fsl_espi_read_reg(mpc8xxx_spi, ESPI_SPMODE); + loop_mode = fsl_espi_read_reg(espi, ESPI_SPMODE); loop_mode &= ~SPMODE_LOOP; if (spi->mode & SPI_LOOP) loop_mode |= SPMODE_LOOP; - fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPMODE, loop_mode); + fsl_espi_write_reg(espi, ESPI_SPMODE, loop_mode); fsl_espi_setup_transfer(spi, NULL); - pm_runtime_mark_last_busy(mpc8xxx_spi->dev); - pm_runtime_put_autosuspend(mpc8xxx_spi->dev); + pm_runtime_mark_last_busy(espi->dev); + pm_runtime_put_autosuspend(espi->dev); return 0; } @@ -493,52 +511,52 @@ static void fsl_espi_cleanup(struct spi_device *spi) spi_set_ctldata(spi, NULL); } -static void fsl_espi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events) +static void fsl_espi_cpu_irq(struct fsl_espi *espi, u32 events) { - if (mspi->rx_len) - fsl_espi_read_rx_fifo(mspi, events); + if (espi->rx_len) + fsl_espi_read_rx_fifo(espi, events); - if (mspi->tx_len) - fsl_espi_fill_tx_fifo(mspi, events); + if (espi->tx_len) + fsl_espi_fill_tx_fifo(espi, events); - if (mspi->tx_len || mspi->rx_len) + if (espi->tx_len || espi->rx_len) return; /* we're done, but check for errors before returning */ - events = fsl_espi_read_reg(mspi, ESPI_SPIE); + events = fsl_espi_read_reg(espi, ESPI_SPIE); if (!(events & SPIE_DON)) - dev_err(mspi->dev, + dev_err(espi->dev, "Transfer done but SPIE_DON isn't set!\n"); if (SPIE_RXCNT(events) || SPIE_TXCNT(events) != FSL_ESPI_FIFO_SIZE) - dev_err(mspi->dev, "Transfer done but rx/tx fifo's aren't empty!\n"); + dev_err(espi->dev, "Transfer done but rx/tx fifo's aren't empty!\n"); - complete(&mspi->done); + complete(&espi->done); } static irqreturn_t fsl_espi_irq(s32 irq, void *context_data) { - struct mpc8xxx_spi *mspi = context_data; + struct fsl_espi *espi = context_data; u32 events; - spin_lock(&mspi->lock); + spin_lock(&espi->lock); /* Get interrupt events(tx/rx) */ - events = fsl_espi_read_reg(mspi, ESPI_SPIE); + events = fsl_espi_read_reg(espi, ESPI_SPIE); if (!events) { - spin_unlock(&mspi->lock); + spin_unlock(&espi->lock); return IRQ_NONE; } - dev_vdbg(mspi->dev, "%s: events %x\n", __func__, events); + dev_vdbg(espi->dev, "%s: events %x\n", __func__, events); - fsl_espi_cpu_irq(mspi, events); + fsl_espi_cpu_irq(espi, events); /* Clear the events */ - fsl_espi_write_reg(mspi, ESPI_SPIE, events); + fsl_espi_write_reg(espi, ESPI_SPIE, events); - spin_unlock(&mspi->lock); + spin_unlock(&espi->lock); return IRQ_HANDLED; } @@ -547,12 +565,12 @@ static irqreturn_t fsl_espi_irq(s32 irq, void *context_data) static int fsl_espi_runtime_suspend(struct device *dev) { struct spi_master *master = dev_get_drvdata(dev); - struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(master); + struct fsl_espi *espi = spi_master_get_devdata(master); u32 regval; - regval = fsl_espi_read_reg(mpc8xxx_spi, ESPI_SPMODE); + regval = fsl_espi_read_reg(espi, ESPI_SPMODE); regval &= ~SPMODE_ENABLE; - fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPMODE, regval); + fsl_espi_write_reg(espi, ESPI_SPMODE, regval); return 0; } @@ -560,12 +578,12 @@ static int fsl_espi_runtime_suspend(struct device *dev) static int fsl_espi_runtime_resume(struct device *dev) { struct spi_master *master = dev_get_drvdata(dev); - struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(master); + struct fsl_espi *espi = spi_master_get_devdata(master); u32 regval; - regval = fsl_espi_read_reg(mpc8xxx_spi, ESPI_SPMODE); + regval = fsl_espi_read_reg(espi, ESPI_SPMODE); regval |= SPMODE_ENABLE; - fsl_espi_write_reg(mpc8xxx_spi, ESPI_SPMODE, regval); + fsl_espi_write_reg(espi, ESPI_SPMODE, regval); return 0; } @@ -579,16 +597,16 @@ static size_t fsl_espi_max_message_size(struct spi_device *spi) static void fsl_espi_init_regs(struct device *dev, bool initial) { struct spi_master *master = dev_get_drvdata(dev); - struct mpc8xxx_spi *mspi = spi_master_get_devdata(master); + struct fsl_espi *espi = spi_master_get_devdata(master); struct device_node *nc; u32 csmode, cs, prop; int ret; /* SPI controller initializations */ - fsl_espi_write_reg(mspi, ESPI_SPMODE, 0); - fsl_espi_write_reg(mspi, ESPI_SPIM, 0); - fsl_espi_write_reg(mspi, ESPI_SPCOM, 0); - fsl_espi_write_reg(mspi, ESPI_SPIE, 0xffffffff); + fsl_espi_write_reg(espi, ESPI_SPMODE, 0); + fsl_espi_write_reg(espi, ESPI_SPIM, 0); + fsl_espi_write_reg(espi, ESPI_SPCOM, 0); + fsl_espi_write_reg(espi, ESPI_SPIE, 0xffffffff); /* Init eSPI CS mode register */ for_each_available_child_of_node(master->dev.of_node, nc) { @@ -613,24 +631,24 @@ static void fsl_espi_init_regs(struct device *dev, bool initial) csmode |= CSMODE_AFT(prop); } - fsl_espi_write_reg(mspi, ESPI_SPMODEx(cs), csmode); + fsl_espi_write_reg(espi, ESPI_SPMODEx(cs), csmode); if (initial) dev_info(dev, "cs=%u, init_csmode=0x%x\n", cs, csmode); } /* Enable SPI interface */ - fsl_espi_write_reg(mspi, ESPI_SPMODE, SPMODE_INIT_VAL | SPMODE_ENABLE); + fsl_espi_write_reg(espi, ESPI_SPMODE, SPMODE_INIT_VAL | SPMODE_ENABLE); } static int fsl_espi_probe(struct device *dev, struct resource *mem, unsigned int irq, unsigned int num_cs) { struct spi_master *master; - struct mpc8xxx_spi *mpc8xxx_spi; + struct fsl_espi *espi; int ret; - master = spi_alloc_master(dev, sizeof(struct mpc8xxx_spi)); + master = spi_alloc_master(dev, sizeof(struct fsl_espi)); if (!master) return -ENOMEM; @@ -647,35 +665,33 @@ static int fsl_espi_probe(struct device *dev, struct resource *mem, master->max_message_size = fsl_espi_max_message_size; master->num_chipselect = num_cs; - mpc8xxx_spi = spi_master_get_devdata(master); - spin_lock_init(&mpc8xxx_spi->lock); + espi = spi_master_get_devdata(master); + spin_lock_init(&espi->lock); - mpc8xxx_spi->dev = dev; - mpc8xxx_spi->spibrg = fsl_get_sys_freq(); - if (mpc8xxx_spi->spibrg == -1) { + espi->dev = dev; + espi->spibrg = fsl_get_sys_freq(); + if (espi->spibrg == -1) { dev_err(dev, "Can't get sys frequency!\n"); ret = -EINVAL; goto err_probe; } - init_completion(&mpc8xxx_spi->done); + init_completion(&espi->done); - mpc8xxx_spi->local_buf = - devm_kmalloc(dev, SPCOM_TRANLEN_MAX, GFP_KERNEL); - if (!mpc8xxx_spi->local_buf) { + espi->local_buf = devm_kmalloc(dev, SPCOM_TRANLEN_MAX, GFP_KERNEL); + if (!espi->local_buf) { ret = -ENOMEM; goto err_probe; } - mpc8xxx_spi->reg_base = devm_ioremap_resource(dev, mem); - if (IS_ERR(mpc8xxx_spi->reg_base)) { - ret = PTR_ERR(mpc8xxx_spi->reg_base); + espi->reg_base = devm_ioremap_resource(dev, mem); + if (IS_ERR(espi->reg_base)) { + ret = PTR_ERR(espi->reg_base); goto err_probe; } /* Register for SPI Interrupt */ - ret = devm_request_irq(dev, irq, fsl_espi_irq, 0, "fsl_espi", - mpc8xxx_spi); + ret = devm_request_irq(dev, irq, fsl_espi_irq, 0, "fsl_espi", espi); if (ret) goto err_probe; @@ -691,7 +707,7 @@ static int fsl_espi_probe(struct device *dev, struct resource *mem, if (ret < 0) goto err_pm; - dev_info(dev, "at 0x%p (irq = %u)\n", mpc8xxx_spi->reg_base, irq); + dev_info(dev, "at 0x%p (irq = %u)\n", espi->reg_base, irq); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); |