diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-pxa.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-pxa.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c index e28b825b0433..6cf333ecc8b8 100644 --- a/drivers/i2c/busses/i2c-pxa.c +++ b/drivers/i2c/busses/i2c-pxa.c @@ -48,6 +48,8 @@ struct pxa_reg_layout { u32 isar; u32 ilcr; u32 iwcr; + u32 fm; + u32 hs; }; enum pxa_i2c_types { @@ -55,8 +57,12 @@ enum pxa_i2c_types { REGS_PXA3XX, REGS_CE4100, REGS_PXA910, + REGS_A3700, }; +#define ICR_BUSMODE_FM (1 << 16) /* shifted fast mode for armada-3700 */ +#define ICR_BUSMODE_HS (1 << 17) /* shifted high speed mode for armada-3700 */ + /* * I2C registers definitions */ @@ -91,6 +97,15 @@ static struct pxa_reg_layout pxa_reg_layout[] = { .ilcr = 0x28, .iwcr = 0x30, }, + [REGS_A3700] = { + .ibmr = 0x00, + .idbr = 0x04, + .icr = 0x08, + .isr = 0x0c, + .isar = 0x10, + .fm = ICR_BUSMODE_FM, + .hs = ICR_BUSMODE_HS, + }, }; static const struct platform_device_id i2c_pxa_id_table[] = { @@ -98,6 +113,7 @@ static const struct platform_device_id i2c_pxa_id_table[] = { { "pxa3xx-pwri2c", REGS_PXA3XX }, { "ce4100-i2c", REGS_CE4100 }, { "pxa910-i2c", REGS_PXA910 }, + { "armada-3700-i2c", REGS_A3700 }, { }, }; MODULE_DEVICE_TABLE(platform, i2c_pxa_id_table); @@ -193,6 +209,8 @@ struct pxa_i2c { unsigned char master_code; unsigned long rate; bool highmode_enter; + u32 fm_mask; + u32 hs_mask; }; #define _IBMR(i2c) ((i2c)->reg_ibmr) @@ -503,8 +521,8 @@ static void i2c_pxa_reset(struct pxa_i2c *i2c) writel(i2c->slave_addr, _ISAR(i2c)); /* set control register values */ - writel(I2C_ICR_INIT | (i2c->fast_mode ? ICR_FM : 0), _ICR(i2c)); - writel(readl(_ICR(i2c)) | (i2c->high_mode ? ICR_HS : 0), _ICR(i2c)); + writel(I2C_ICR_INIT | (i2c->fast_mode ? i2c->fm_mask : 0), _ICR(i2c)); + writel(readl(_ICR(i2c)) | (i2c->high_mode ? i2c->hs_mask : 0), _ICR(i2c)); #ifdef CONFIG_I2C_PXA_SLAVE dev_info(&i2c->adap.dev, "Enabling slave mode\n"); @@ -1137,6 +1155,7 @@ static const struct of_device_id i2c_pxa_dt_ids[] = { { .compatible = "mrvl,pxa-i2c", .data = (void *)REGS_PXA2XX }, { .compatible = "mrvl,pwri2c", .data = (void *)REGS_PXA3XX }, { .compatible = "mrvl,mmp-twsi", .data = (void *)REGS_PXA910 }, + { .compatible = "marvell,armada-3700-i2c", .data = (void *)REGS_A3700 }, {} }; MODULE_DEVICE_TABLE(of, i2c_pxa_dt_ids); @@ -1234,6 +1253,9 @@ static int i2c_pxa_probe(struct platform_device *dev) i2c->reg_idbr = i2c->reg_base + pxa_reg_layout[i2c_type].idbr; i2c->reg_icr = i2c->reg_base + pxa_reg_layout[i2c_type].icr; i2c->reg_isr = i2c->reg_base + pxa_reg_layout[i2c_type].isr; + i2c->fm_mask = pxa_reg_layout[i2c_type].fm ? : ICR_FM; + i2c->hs_mask = pxa_reg_layout[i2c_type].hs ? : ICR_HS; + if (i2c_type != REGS_CE4100) i2c->reg_isar = i2c->reg_base + pxa_reg_layout[i2c_type].isar; |