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-rw-r--r--drivers/memory/atmel-ebi.c13
-rw-r--r--drivers/mfd/atmel-smc.c67
-rw-r--r--drivers/mtd/nand/atmel/nand-controller.c10
-rw-r--r--include/linux/mfd/syscon/atmel-smc.h32
4 files changed, 92 insertions, 30 deletions
diff --git a/drivers/memory/atmel-ebi.c b/drivers/memory/atmel-ebi.c
index ebf69ff..c00a7c7 100644
--- a/drivers/memory/atmel-ebi.c
+++ b/drivers/memory/atmel-ebi.c
@@ -51,6 +51,7 @@ struct atmel_ebi {
struct {
struct regmap *regmap;
struct clk *clk;
+ const struct atmel_hsmc_reg_layout *layout;
} smc;
struct device *dev;
@@ -84,8 +85,8 @@ static void at91sam9_ebi_get_config(struct atmel_ebi_dev *ebid,
static void sama5_ebi_get_config(struct atmel_ebi_dev *ebid,
struct atmel_ebi_dev_config *conf)
{
- atmel_hsmc_cs_conf_get(ebid->ebi->smc.regmap, conf->cs,
- &conf->smcconf);
+ atmel_hsmc_cs_conf_get(ebid->ebi->smc.regmap, ebid->ebi->smc.layout,
+ conf->cs, &conf->smcconf);
}
static const struct atmel_smc_timing_xlate timings_xlate_table[] = {
@@ -287,8 +288,8 @@ static void at91sam9_ebi_apply_config(struct atmel_ebi_dev *ebid,
static void sama5_ebi_apply_config(struct atmel_ebi_dev *ebid,
struct atmel_ebi_dev_config *conf)
{
- atmel_hsmc_cs_conf_apply(ebid->ebi->smc.regmap, conf->cs,
- &conf->smcconf);
+ atmel_hsmc_cs_conf_apply(ebid->ebi->smc.regmap, ebid->ebi->smc.layout,
+ conf->cs, &conf->smcconf);
}
static int atmel_ebi_dev_setup(struct atmel_ebi *ebi, struct device_node *np,
@@ -527,6 +528,10 @@ static int atmel_ebi_probe(struct platform_device *pdev)
if (IS_ERR(ebi->smc.regmap))
return PTR_ERR(ebi->smc.regmap);
+ ebi->smc.layout = atmel_hsmc_get_reg_layout(smc_np);
+ if (IS_ERR(ebi->smc.layout))
+ return PTR_ERR(ebi->smc.layout);
+
ebi->smc.clk = of_clk_get(smc_np, 0);
if (IS_ERR(ebi->smc.clk)) {
if (PTR_ERR(ebi->smc.clk) != -ENOENT)
diff --git a/drivers/mfd/atmel-smc.c b/drivers/mfd/atmel-smc.c
index 20cc0ea..7d77948 100644
--- a/drivers/mfd/atmel-smc.c
+++ b/drivers/mfd/atmel-smc.c
@@ -258,19 +258,21 @@ EXPORT_SYMBOL_GPL(atmel_smc_cs_conf_apply);
* atmel_hsmc_cs_conf_apply - apply an SMC CS conf
* @regmap: the HSMC regmap
* @cs: the CS id
+ * @layout: the layout of registers
* @conf the SMC CS conf to apply
*
* Applies an SMC CS configuration.
* Only valid on post-sama5 SoCs.
*/
-void atmel_hsmc_cs_conf_apply(struct regmap *regmap, int cs,
- const struct atmel_smc_cs_conf *conf)
+void atmel_hsmc_cs_conf_apply(struct regmap *regmap,
+ const struct atmel_hsmc_reg_layout *layout,
+ int cs, const struct atmel_smc_cs_conf *conf)
{
- regmap_write(regmap, ATMEL_HSMC_SETUP(cs), conf->setup);
- regmap_write(regmap, ATMEL_HSMC_PULSE(cs), conf->pulse);
- regmap_write(regmap, ATMEL_HSMC_CYCLE(cs), conf->cycle);
- regmap_write(regmap, ATMEL_HSMC_TIMINGS(cs), conf->timings);
- regmap_write(regmap, ATMEL_HSMC_MODE(cs), conf->mode);
+ regmap_write(regmap, ATMEL_HSMC_SETUP(layout, cs), conf->setup);
+ regmap_write(regmap, ATMEL_HSMC_PULSE(layout, cs), conf->pulse);
+ regmap_write(regmap, ATMEL_HSMC_CYCLE(layout, cs), conf->cycle);
+ regmap_write(regmap, ATMEL_HSMC_TIMINGS(layout, cs), conf->timings);
+ regmap_write(regmap, ATMEL_HSMC_MODE(layout, cs), conf->mode);
}
EXPORT_SYMBOL_GPL(atmel_hsmc_cs_conf_apply);
@@ -297,18 +299,55 @@ EXPORT_SYMBOL_GPL(atmel_smc_cs_conf_get);
* atmel_hsmc_cs_conf_get - retrieve the current SMC CS conf
* @regmap: the HSMC regmap
* @cs: the CS id
+ * @layout: the layout of registers
* @conf: the SMC CS conf object to store the current conf
*
* Retrieve the SMC CS configuration.
* Only valid on post-sama5 SoCs.
*/
-void atmel_hsmc_cs_conf_get(struct regmap *regmap, int cs,
- struct atmel_smc_cs_conf *conf)
+void atmel_hsmc_cs_conf_get(struct regmap *regmap,
+ const struct atmel_hsmc_reg_layout *layout,
+ int cs, struct atmel_smc_cs_conf *conf)
{
- regmap_read(regmap, ATMEL_HSMC_SETUP(cs), &conf->setup);
- regmap_read(regmap, ATMEL_HSMC_PULSE(cs), &conf->pulse);
- regmap_read(regmap, ATMEL_HSMC_CYCLE(cs), &conf->cycle);
- regmap_read(regmap, ATMEL_HSMC_TIMINGS(cs), &conf->timings);
- regmap_read(regmap, ATMEL_HSMC_MODE(cs), &conf->mode);
+ regmap_read(regmap, ATMEL_HSMC_SETUP(layout, cs), &conf->setup);
+ regmap_read(regmap, ATMEL_HSMC_PULSE(layout, cs), &conf->pulse);
+ regmap_read(regmap, ATMEL_HSMC_CYCLE(layout, cs), &conf->cycle);
+ regmap_read(regmap, ATMEL_HSMC_TIMINGS(layout, cs), &conf->timings);
+ regmap_read(regmap, ATMEL_HSMC_MODE(layout, cs), &conf->mode);
}
EXPORT_SYMBOL_GPL(atmel_hsmc_cs_conf_get);
+
+static const struct atmel_hsmc_reg_layout sama5d3_reg_layout = {
+ .timing_regs_offset = 0x600,
+};
+
+static const struct atmel_hsmc_reg_layout sama5d2_reg_layout = {
+ .timing_regs_offset = 0x700,
+};
+
+static const struct of_device_id atmel_smc_ids[] = {
+ { .compatible = "atmel,at91sam9260-smc", .data = NULL },
+ { .compatible = "atmel,sama5d3-smc", .data = &sama5d3_reg_layout },
+ { .compatible = "atmel,sama5d2-smc", .data = &sama5d2_reg_layout },
+ { /* sentinel */ },
+};
+
+/**
+ * atmel_hsmc_get_reg_layout - retrieve the layout of HSMC registers
+ * @np: the HSMC regmap
+ *
+ * Retrieve the layout of HSMC registers.
+ *
+ * Returns NULL in case of SMC, a struct atmel_hsmc_reg_layout pointer
+ * in HSMC case, otherwise ERR_PTR(-EINVAL).
+ */
+const struct atmel_hsmc_reg_layout *
+atmel_hsmc_get_reg_layout(struct device_node *np)
+{
+ const struct of_device_id *match;
+
+ match = of_match_node(atmel_smc_ids, np);
+
+ return match ? match->data : ERR_PTR(-EINVAL);
+}
+EXPORT_SYMBOL_GPL(atmel_hsmc_get_reg_layout);
diff --git a/drivers/mtd/nand/atmel/nand-controller.c b/drivers/mtd/nand/atmel/nand-controller.c
index ceec21b..1913ce1 100644
--- a/drivers/mtd/nand/atmel/nand-controller.c
+++ b/drivers/mtd/nand/atmel/nand-controller.c
@@ -247,6 +247,7 @@ struct atmel_hsmc_nand_controller {
void __iomem *virt;
dma_addr_t dma;
} sram;
+ const struct atmel_hsmc_reg_layout *hsmc_layout;
struct regmap *io;
struct atmel_nfc_op op;
struct completion complete;
@@ -1442,12 +1443,12 @@ static int atmel_hsmc_nand_setup_data_interface(struct atmel_nand *nand,
int csline,
const struct nand_data_interface *conf)
{
- struct atmel_nand_controller *nc;
+ struct atmel_hsmc_nand_controller *nc;
struct atmel_smc_cs_conf smcconf;
struct atmel_nand_cs *cs;
int ret;
- nc = to_nand_controller(nand->base.controller);
+ nc = to_hsmc_nand_controller(nand->base.controller);
ret = atmel_smc_nand_prepare_smcconf(nand, conf, &smcconf);
if (ret)
@@ -1462,7 +1463,8 @@ static int atmel_hsmc_nand_setup_data_interface(struct atmel_nand *nand,
if (cs->rb.type == ATMEL_NAND_NATIVE_RB)
cs->smcconf.timings |= ATMEL_HSMC_TIMINGS_RBNSEL(cs->rb.id);
- atmel_hsmc_cs_conf_apply(nc->smc, cs->id, &cs->smcconf);
+ atmel_hsmc_cs_conf_apply(nc->base.smc, nc->hsmc_layout, cs->id,
+ &cs->smcconf);
return 0;
}
@@ -2177,6 +2179,8 @@ atmel_hsmc_nand_controller_init(struct atmel_hsmc_nand_controller *nc)
return -EINVAL;
}
+ nc->hsmc_layout = atmel_hsmc_get_reg_layout(np);
+
nc->irq = of_irq_get(np, 0);
of_node_put(np);
if (nc->irq < 0) {
diff --git a/include/linux/mfd/syscon/atmel-smc.h b/include/linux/mfd/syscon/atmel-smc.h
index afa2661..7a367f3 100644
--- a/include/linux/mfd/syscon/atmel-smc.h
+++ b/include/linux/mfd/syscon/atmel-smc.h
@@ -15,21 +15,26 @@
#define _LINUX_MFD_SYSCON_ATMEL_SMC_H_
#include <linux/kernel.h>
+#include <linux/of.h>
#include <linux/regmap.h>
#define ATMEL_SMC_SETUP(cs) (((cs) * 0x10))
-#define ATMEL_HSMC_SETUP(cs) (0x600 + ((cs) * 0x14))
+#define ATMEL_HSMC_SETUP(layout, cs) \
+ ((layout)->timing_regs_offset + ((cs) * 0x14))
#define ATMEL_SMC_PULSE(cs) (((cs) * 0x10) + 0x4)
-#define ATMEL_HSMC_PULSE(cs) (0x600 + ((cs) * 0x14) + 0x4)
+#define ATMEL_HSMC_PULSE(layout, cs) \
+ ((layout)->timing_regs_offset + ((cs) * 0x14) + 0x4)
#define ATMEL_SMC_CYCLE(cs) (((cs) * 0x10) + 0x8)
-#define ATMEL_HSMC_CYCLE(cs) (0x600 + ((cs) * 0x14) + 0x8)
+#define ATMEL_HSMC_CYCLE(layout, cs) \
+ ((layout)->timing_regs_offset + ((cs) * 0x14) + 0x8)
#define ATMEL_SMC_NWE_SHIFT 0
#define ATMEL_SMC_NCS_WR_SHIFT 8
#define ATMEL_SMC_NRD_SHIFT 16
#define ATMEL_SMC_NCS_RD_SHIFT 24
#define ATMEL_SMC_MODE(cs) (((cs) * 0x10) + 0xc)
-#define ATMEL_HSMC_MODE(cs) (0x600 + ((cs) * 0x14) + 0x10)
+#define ATMEL_HSMC_MODE(layout, cs) \
+ ((layout)->timing_regs_offset + ((cs) * 0x14) + 0x10)
#define ATMEL_SMC_MODE_READMODE_MASK BIT(0)
#define ATMEL_SMC_MODE_READMODE_NCS (0 << 0)
#define ATMEL_SMC_MODE_READMODE_NRD (1 << 0)
@@ -59,7 +64,8 @@
#define ATMEL_SMC_MODE_PS_16 (2 << 28)
#define ATMEL_SMC_MODE_PS_32 (3 << 28)
-#define ATMEL_HSMC_TIMINGS(cs) (0x600 + ((cs) * 0x14) + 0xc)
+#define ATMEL_HSMC_TIMINGS(layout, cs) \
+ ((layout)->timing_regs_offset + ((cs) * 0x14) + 0xc)
#define ATMEL_HSMC_TIMINGS_OCMS BIT(12)
#define ATMEL_HSMC_TIMINGS_RBNSEL(x) ((x) << 28)
#define ATMEL_HSMC_TIMINGS_NFSEL BIT(31)
@@ -69,6 +75,10 @@
#define ATMEL_HSMC_TIMINGS_TRR_SHIFT 16
#define ATMEL_HSMC_TIMINGS_TWB_SHIFT 24
+struct atmel_hsmc_reg_layout {
+ unsigned int timing_regs_offset;
+};
+
/**
* struct atmel_smc_cs_conf - SMC CS config as described in the datasheet.
* @setup: NCS/NWE/NRD setup timings (not applicable to at91rm9200)
@@ -98,11 +108,15 @@ int atmel_smc_cs_conf_set_cycle(struct atmel_smc_cs_conf *conf,
unsigned int shift, unsigned int ncycles);
void atmel_smc_cs_conf_apply(struct regmap *regmap, int cs,
const struct atmel_smc_cs_conf *conf);
-void atmel_hsmc_cs_conf_apply(struct regmap *regmap, int cs,
- const struct atmel_smc_cs_conf *conf);
+void atmel_hsmc_cs_conf_apply(struct regmap *regmap,
+ const struct atmel_hsmc_reg_layout *reglayout,
+ int cs, const struct atmel_smc_cs_conf *conf);
void atmel_smc_cs_conf_get(struct regmap *regmap, int cs,
struct atmel_smc_cs_conf *conf);
-void atmel_hsmc_cs_conf_get(struct regmap *regmap, int cs,
- struct atmel_smc_cs_conf *conf);
+void atmel_hsmc_cs_conf_get(struct regmap *regmap,
+ const struct atmel_hsmc_reg_layout *reglayout,
+ int cs, struct atmel_smc_cs_conf *conf);
+const struct atmel_hsmc_reg_layout *
+atmel_hsmc_get_reg_layout(struct device_node *np);
#endif /* _LINUX_MFD_SYSCON_ATMEL_SMC_H_ */
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