diff options
Diffstat (limited to 'drivers/memory')
| -rw-r--r-- | drivers/memory/renesas-rpc-if.c | 75 |
1 files changed, 57 insertions, 18 deletions
diff --git a/drivers/memory/renesas-rpc-if.c b/drivers/memory/renesas-rpc-if.c index 09cd4318a83d..ded80caec167 100644 --- a/drivers/memory/renesas-rpc-if.c +++ b/drivers/memory/renesas-rpc-if.c @@ -163,14 +163,36 @@ static const struct regmap_access_table rpcif_volatile_table = { .n_yes_ranges = ARRAY_SIZE(rpcif_volatile_ranges), }; +struct rpcif_priv { + struct device *dev; + void __iomem *base; + void __iomem *dirmap; + struct regmap *regmap; + struct reset_control *rstc; + struct platform_device *vdev; + size_t size; + enum rpcif_type type; + enum rpcif_data_dir dir; + u8 bus_size; + u8 xfer_size; + void *buffer; + u32 xferlen; + u32 smcr; + u32 smadr; + u32 command; /* DRCMR or SMCMR */ + u32 option; /* DROPR or SMOPR */ + u32 enable; /* DRENR or SMENR */ + u32 dummy; /* DRDMCR or SMDMCR */ + u32 ddr; /* DRDRENR or SMDRENR */ +}; /* * Custom accessor functions to ensure SM[RW]DR[01] are always accessed with - * proper width. Requires rpcif.xfer_size to be correctly set before! + * proper width. Requires rpcif_priv.xfer_size to be correctly set before! */ static int rpcif_reg_read(void *context, unsigned int reg, unsigned int *val) { - struct rpcif *rpc = context; + struct rpcif_priv *rpc = context; switch (reg) { case RPCIF_SMRDR0: @@ -206,7 +228,7 @@ static int rpcif_reg_read(void *context, unsigned int reg, unsigned int *val) static int rpcif_reg_write(void *context, unsigned int reg, unsigned int val) { - struct rpcif *rpc = context; + struct rpcif_priv *rpc = context; switch (reg) { case RPCIF_SMWDR0: @@ -253,13 +275,12 @@ static const struct regmap_config rpcif_regmap_config = { .volatile_table = &rpcif_volatile_table, }; -int rpcif_sw_init(struct rpcif *rpc, struct device *dev) +int rpcif_sw_init(struct rpcif *rpcif, struct device *dev) { struct platform_device *pdev = to_platform_device(dev); + struct rpcif_priv *rpc = dev_get_drvdata(dev); struct resource *res; - rpc->dev = dev; - rpc->base = devm_platform_ioremap_resource_byname(pdev, "regs"); if (IS_ERR(rpc->base)) return PTR_ERR(rpc->base); @@ -280,12 +301,17 @@ int rpcif_sw_init(struct rpcif *rpc, struct device *dev) rpc->type = (uintptr_t)of_device_get_match_data(dev); rpc->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); + if (IS_ERR(rpc->rstc)) + return PTR_ERR(rpc->rstc); - return PTR_ERR_OR_ZERO(rpc->rstc); + rpcif->dev = dev; + rpcif->dirmap = rpc->dirmap; + rpcif->size = rpc->size; + return 0; } EXPORT_SYMBOL(rpcif_sw_init); -static void rpcif_rzg2l_timing_adjust_sdr(struct rpcif *rpc) +static void rpcif_rzg2l_timing_adjust_sdr(struct rpcif_priv *rpc) { regmap_write(rpc->regmap, RPCIF_PHYWR, 0xa5390000); regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000000); @@ -299,8 +325,9 @@ static void rpcif_rzg2l_timing_adjust_sdr(struct rpcif *rpc) regmap_write(rpc->regmap, RPCIF_PHYADD, 0x80000032); } -int rpcif_hw_init(struct rpcif *rpc, bool hyperflash) +int rpcif_hw_init(struct rpcif *rpcif, bool hyperflash) { + struct rpcif_priv *rpc = dev_get_drvdata(rpcif->dev); u32 dummy; pm_runtime_get_sync(rpc->dev); @@ -364,7 +391,7 @@ int rpcif_hw_init(struct rpcif *rpc, bool hyperflash) } EXPORT_SYMBOL(rpcif_hw_init); -static int wait_msg_xfer_end(struct rpcif *rpc) +static int wait_msg_xfer_end(struct rpcif_priv *rpc) { u32 sts; @@ -373,7 +400,7 @@ static int wait_msg_xfer_end(struct rpcif *rpc) USEC_PER_SEC); } -static u8 rpcif_bits_set(struct rpcif *rpc, u32 nbytes) +static u8 rpcif_bits_set(struct rpcif_priv *rpc, u32 nbytes) { if (rpc->bus_size == 2) nbytes /= 2; @@ -386,9 +413,11 @@ static u8 rpcif_bit_size(u8 buswidth) return buswidth > 4 ? 2 : ilog2(buswidth); } -void rpcif_prepare(struct rpcif *rpc, const struct rpcif_op *op, u64 *offs, +void rpcif_prepare(struct rpcif *rpcif, const struct rpcif_op *op, u64 *offs, size_t *len) { + struct rpcif_priv *rpc = dev_get_drvdata(rpcif->dev); + rpc->smcr = 0; rpc->smadr = 0; rpc->enable = 0; @@ -472,8 +501,9 @@ void rpcif_prepare(struct rpcif *rpc, const struct rpcif_op *op, u64 *offs, } EXPORT_SYMBOL(rpcif_prepare); -int rpcif_manual_xfer(struct rpcif *rpc) +int rpcif_manual_xfer(struct rpcif *rpcif) { + struct rpcif_priv *rpc = dev_get_drvdata(rpcif->dev); u32 smenr, smcr, pos = 0, max = rpc->bus_size == 2 ? 8 : 4; int ret = 0; @@ -593,7 +623,7 @@ exit: err_out: if (reset_control_reset(rpc->rstc)) dev_err(rpc->dev, "Failed to reset HW\n"); - rpcif_hw_init(rpc, rpc->bus_size == 2); + rpcif_hw_init(rpcif, rpc->bus_size == 2); goto exit; } EXPORT_SYMBOL(rpcif_manual_xfer); @@ -640,8 +670,9 @@ static void memcpy_fromio_readw(void *to, } } -ssize_t rpcif_dirmap_read(struct rpcif *rpc, u64 offs, size_t len, void *buf) +ssize_t rpcif_dirmap_read(struct rpcif *rpcif, u64 offs, size_t len, void *buf) { + struct rpcif_priv *rpc = dev_get_drvdata(rpcif->dev); loff_t from = offs & (rpc->size - 1); size_t size = rpc->size - from; @@ -676,6 +707,7 @@ static int rpcif_probe(struct platform_device *pdev) { struct platform_device *vdev; struct device_node *flash; + struct rpcif_priv *rpc; const char *name; int ret; @@ -696,11 +728,18 @@ static int rpcif_probe(struct platform_device *pdev) } of_node_put(flash); + rpc = devm_kzalloc(&pdev->dev, sizeof(*rpc), GFP_KERNEL); + if (!rpc) + return -ENOMEM; + vdev = platform_device_alloc(name, pdev->id); if (!vdev) return -ENOMEM; vdev->dev.parent = &pdev->dev; - platform_set_drvdata(pdev, vdev); + + rpc->dev = &pdev->dev; + rpc->vdev = vdev; + platform_set_drvdata(pdev, rpc); ret = platform_device_add(vdev); if (ret) { @@ -713,9 +752,9 @@ static int rpcif_probe(struct platform_device *pdev) static int rpcif_remove(struct platform_device *pdev) { - struct platform_device *vdev = platform_get_drvdata(pdev); + struct rpcif_priv *rpc = platform_get_drvdata(pdev); - platform_device_unregister(vdev); + platform_device_unregister(rpc->vdev); return 0; } |