diff options
Diffstat (limited to 'drivers/i2c')
-rw-r--r-- | drivers/i2c/busses/i2c-at91.c | 3 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-brcmstb.c | 27 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-designware-platdrv.c | 14 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-ismt.c | 5 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-meson.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 30 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-riic.c | 30 |
7 files changed, 91 insertions, 20 deletions
diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c index 0b86c61..c925a69 100644 --- a/drivers/i2c/busses/i2c-at91.c +++ b/drivers/i2c/busses/i2c-at91.c @@ -1180,6 +1180,7 @@ static int at91_twi_suspend_noirq(struct device *dev) static int at91_twi_resume_noirq(struct device *dev) { + struct at91_twi_dev *twi_dev = dev_get_drvdata(dev); int ret; if (!pm_runtime_status_suspended(dev)) { @@ -1191,6 +1192,8 @@ static int at91_twi_resume_noirq(struct device *dev) pm_runtime_mark_last_busy(dev); pm_request_autosuspend(dev); + at91_init_twi_bus(twi_dev); + return 0; } diff --git a/drivers/i2c/busses/i2c-brcmstb.c b/drivers/i2c/busses/i2c-brcmstb.c index 0652281..78792b4 100644 --- a/drivers/i2c/busses/i2c-brcmstb.c +++ b/drivers/i2c/busses/i2c-brcmstb.c @@ -465,6 +465,7 @@ static int brcmstb_i2c_xfer(struct i2c_adapter *adapter, u8 *tmp_buf; int len = 0; int xfersz = brcmstb_i2c_get_xfersz(dev); + u32 cond, cond_per_msg; if (dev->is_suspended) return -EBUSY; @@ -481,10 +482,11 @@ static int brcmstb_i2c_xfer(struct i2c_adapter *adapter, pmsg->buf ? pmsg->buf[0] : '0', pmsg->len); if (i < (num - 1) && (msgs[i + 1].flags & I2C_M_NOSTART)) - brcmstb_set_i2c_start_stop(dev, ~(COND_START_STOP)); + cond = ~COND_START_STOP; else - brcmstb_set_i2c_start_stop(dev, - COND_RESTART | COND_NOSTOP); + cond = COND_RESTART | COND_NOSTOP; + + brcmstb_set_i2c_start_stop(dev, cond); /* Send slave address */ if (!(pmsg->flags & I2C_M_NOSTART)) { @@ -497,13 +499,24 @@ static int brcmstb_i2c_xfer(struct i2c_adapter *adapter, } } + cond_per_msg = cond; + /* Perform data transfer */ while (len) { bytes_to_xfer = min(len, xfersz); - if (len <= xfersz && i == (num - 1)) - brcmstb_set_i2c_start_stop(dev, - ~(COND_START_STOP)); + if (len <= xfersz) { + if (i == (num - 1)) + cond_per_msg = cond_per_msg & + ~(COND_RESTART | COND_NOSTOP); + else + cond_per_msg = cond; + } else { + cond_per_msg = (cond_per_msg & ~COND_RESTART) | + COND_NOSTOP; + } + + brcmstb_set_i2c_start_stop(dev, cond_per_msg); rc = brcmstb_i2c_xfer_bsc_data(dev, tmp_buf, bytes_to_xfer, pmsg); @@ -512,6 +525,8 @@ static int brcmstb_i2c_xfer(struct i2c_adapter *adapter, len -= bytes_to_xfer; tmp_buf += bytes_to_xfer; + + cond_per_msg = COND_NOSTART | COND_NOSTOP; } } diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 0b42a12..b42d95f 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -319,7 +319,7 @@ static void dw_i2c_plat_complete(struct device *dev) #endif #ifdef CONFIG_PM -static int dw_i2c_plat_suspend(struct device *dev) +static int dw_i2c_plat_runtime_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct dw_i2c_dev *i_dev = platform_get_drvdata(pdev); @@ -343,11 +343,21 @@ static int dw_i2c_plat_resume(struct device *dev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int dw_i2c_plat_suspend(struct device *dev) +{ + pm_runtime_resume(dev); + return dw_i2c_plat_runtime_suspend(dev); +} +#endif + static const struct dev_pm_ops dw_i2c_dev_pm_ops = { .prepare = dw_i2c_plat_prepare, .complete = dw_i2c_plat_complete, SET_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume) - SET_RUNTIME_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume, NULL) + SET_RUNTIME_PM_OPS(dw_i2c_plat_runtime_suspend, + dw_i2c_plat_resume, + NULL) }; #define DW_I2C_DEV_PMOPS (&dw_i2c_dev_pm_ops) diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c index f573448..7aea288 100644 --- a/drivers/i2c/busses/i2c-ismt.c +++ b/drivers/i2c/busses/i2c-ismt.c @@ -340,6 +340,11 @@ static int ismt_process_desc(const struct ismt_desc *desc, data->word = dma_buffer[0] | (dma_buffer[1] << 8); break; case I2C_SMBUS_BLOCK_DATA: + if (desc->rxbytes != dma_buffer[0] + 1) + return -EMSGSIZE; + + memcpy(data->block, dma_buffer, desc->rxbytes); + break; case I2C_SMBUS_I2C_BLOCK_DATA: memcpy(&data->block[1], dma_buffer, desc->rxbytes); data->block[0] = desc->rxbytes; diff --git a/drivers/i2c/busses/i2c-meson.c b/drivers/i2c/busses/i2c-meson.c index 2aa61bb..73b97c7 100644 --- a/drivers/i2c/busses/i2c-meson.c +++ b/drivers/i2c/busses/i2c-meson.c @@ -175,7 +175,7 @@ static void meson_i2c_put_data(struct meson_i2c *i2c, char *buf, int len) wdata1 |= *buf++ << ((i - 4) * 8); writel(wdata0, i2c->regs + REG_TOK_WDATA0); - writel(wdata0, i2c->regs + REG_TOK_WDATA1); + writel(wdata1, i2c->regs + REG_TOK_WDATA1); dev_dbg(i2c->dev, "%s: data %08x %08x len %d\n", __func__, wdata0, wdata1, len); diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index c21ca7b..8f1c5f2 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -94,6 +94,12 @@ #define SB800_PIIX4_PORT_IDX_ALT 0x2e #define SB800_PIIX4_PORT_IDX_SEL 0x2f #define SB800_PIIX4_PORT_IDX_MASK 0x06 +#define SB800_PIIX4_PORT_IDX_SHIFT 1 + +/* On kerncz, SmBus0Sel is at bit 20:19 of PMx00 DecodeEn */ +#define SB800_PIIX4_PORT_IDX_KERNCZ 0x02 +#define SB800_PIIX4_PORT_IDX_MASK_KERNCZ 0x18 +#define SB800_PIIX4_PORT_IDX_SHIFT_KERNCZ 3 /* insmod parameters */ @@ -149,6 +155,8 @@ static const struct dmi_system_id piix4_dmi_ibm[] = { */ static DEFINE_MUTEX(piix4_mutex_sb800); static u8 piix4_port_sel_sb800; +static u8 piix4_port_mask_sb800; +static u8 piix4_port_shift_sb800; static const char *piix4_main_port_names_sb800[PIIX4_MAX_ADAPTERS] = { " port 0", " port 2", " port 3", " port 4" }; @@ -347,7 +355,19 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, /* Find which register is used for port selection */ if (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD) { - piix4_port_sel_sb800 = SB800_PIIX4_PORT_IDX_ALT; + switch (PIIX4_dev->device) { + case PCI_DEVICE_ID_AMD_KERNCZ_SMBUS: + piix4_port_sel_sb800 = SB800_PIIX4_PORT_IDX_KERNCZ; + piix4_port_mask_sb800 = SB800_PIIX4_PORT_IDX_MASK_KERNCZ; + piix4_port_shift_sb800 = SB800_PIIX4_PORT_IDX_SHIFT_KERNCZ; + break; + case PCI_DEVICE_ID_AMD_HUDSON2_SMBUS: + default: + piix4_port_sel_sb800 = SB800_PIIX4_PORT_IDX_ALT; + piix4_port_mask_sb800 = SB800_PIIX4_PORT_IDX_MASK; + piix4_port_shift_sb800 = SB800_PIIX4_PORT_IDX_SHIFT; + break; + } } else { mutex_lock(&piix4_mutex_sb800); outb_p(SB800_PIIX4_PORT_IDX_SEL, SB800_PIIX4_SMB_IDX); @@ -355,6 +375,8 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, piix4_port_sel_sb800 = (port_sel & 0x01) ? SB800_PIIX4_PORT_IDX_ALT : SB800_PIIX4_PORT_IDX; + piix4_port_mask_sb800 = SB800_PIIX4_PORT_IDX_MASK; + piix4_port_shift_sb800 = SB800_PIIX4_PORT_IDX_SHIFT; mutex_unlock(&piix4_mutex_sb800); } @@ -616,8 +638,8 @@ static s32 piix4_access_sb800(struct i2c_adapter *adap, u16 addr, smba_en_lo = inb_p(SB800_PIIX4_SMB_IDX + 1); port = adapdata->port; - if ((smba_en_lo & SB800_PIIX4_PORT_IDX_MASK) != port) - outb_p((smba_en_lo & ~SB800_PIIX4_PORT_IDX_MASK) | port, + if ((smba_en_lo & piix4_port_mask_sb800) != port) + outb_p((smba_en_lo & ~piix4_port_mask_sb800) | port, SB800_PIIX4_SMB_IDX + 1); retval = piix4_access(adap, addr, flags, read_write, @@ -706,7 +728,7 @@ static int piix4_add_adapter(struct pci_dev *dev, unsigned short smba, adapdata->smba = smba; adapdata->sb800_main = sb800_main; - adapdata->port = port << 1; + adapdata->port = port << piix4_port_shift_sb800; /* set up the sysfs linkage to our parent device */ adap->dev.parent = &dev->dev; diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index 6263ea8..8f11d34 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -80,6 +80,7 @@ #define ICIER_TEIE 0x40 #define ICIER_RIE 0x20 #define ICIER_NAKIE 0x10 +#define ICIER_SPIE 0x08 #define ICSR2_NACKF 0x10 @@ -216,11 +217,10 @@ static irqreturn_t riic_tend_isr(int irq, void *data) return IRQ_NONE; } - if (riic->is_last || riic->err) + if (riic->is_last || riic->err) { + riic_clear_set_bit(riic, 0, ICIER_SPIE, RIIC_ICIER); writeb(ICCR2_SP, riic->base + RIIC_ICCR2); - - writeb(0, riic->base + RIIC_ICIER); - complete(&riic->msg_done); + } return IRQ_HANDLED; } @@ -240,13 +240,13 @@ static irqreturn_t riic_rdrf_isr(int irq, void *data) if (riic->bytes_left == 1) { /* STOP must come before we set ACKBT! */ - if (riic->is_last) + if (riic->is_last) { + riic_clear_set_bit(riic, 0, ICIER_SPIE, RIIC_ICIER); writeb(ICCR2_SP, riic->base + RIIC_ICCR2); + } riic_clear_set_bit(riic, 0, ICMR3_ACKBT, RIIC_ICMR3); - writeb(0, riic->base + RIIC_ICIER); - complete(&riic->msg_done); } else { riic_clear_set_bit(riic, ICMR3_ACKBT, 0, RIIC_ICMR3); } @@ -259,6 +259,21 @@ static irqreturn_t riic_rdrf_isr(int irq, void *data) return IRQ_HANDLED; } +static irqreturn_t riic_stop_isr(int irq, void *data) +{ + struct riic_dev *riic = data; + + /* read back registers to confirm writes have fully propagated */ + writeb(0, riic->base + RIIC_ICSR2); + readb(riic->base + RIIC_ICSR2); + writeb(0, riic->base + RIIC_ICIER); + readb(riic->base + RIIC_ICIER); + + complete(&riic->msg_done); + + return IRQ_HANDLED; +} + static u32 riic_func(struct i2c_adapter *adap) { return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; @@ -326,6 +341,7 @@ static struct riic_irq_desc riic_irqs[] = { { .res_num = 0, .isr = riic_tend_isr, .name = "riic-tend" }, { .res_num = 1, .isr = riic_rdrf_isr, .name = "riic-rdrf" }, { .res_num = 2, .isr = riic_tdre_isr, .name = "riic-tdre" }, + { .res_num = 3, .isr = riic_stop_isr, .name = "riic-stop" }, { .res_num = 5, .isr = riic_tend_isr, .name = "riic-nack" }, }; |