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-rw-r--r--drivers/i2c/busses/i2c-davinci.c26
-rw-r--r--drivers/i2c/busses/i2c-omap.c48
-rw-r--r--drivers/i2c/busses/i2c-s3c2410.c5
-rw-r--r--drivers/i2c/busses/i2c-sh_mobile.c4
-rw-r--r--drivers/i2c/busses/i2c-simtec.c2
-rw-r--r--drivers/i2c/chips/tsl2550.c17
6 files changed, 68 insertions, 34 deletions
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 3fae3a91ce5..c89687a1083 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -187,6 +187,11 @@ static int i2c_davinci_init(struct davinci_i2c_dev *dev)
davinci_i2c_write_reg(dev, DAVINCI_I2C_CLKH_REG, clkh);
davinci_i2c_write_reg(dev, DAVINCI_I2C_CLKL_REG, clkl);
+ /* Respond at reserved "SMBus Host" slave address" (and zero);
+ * we seem to have no option to not respond...
+ */
+ davinci_i2c_write_reg(dev, DAVINCI_I2C_OAR_REG, 0x08);
+
dev_dbg(dev->dev, "input_clock = %d, CLK = %d\n", input_clock, clk);
dev_dbg(dev->dev, "PSC = %d\n",
davinci_i2c_read_reg(dev, DAVINCI_I2C_PSC_REG));
@@ -387,7 +392,7 @@ static void terminate_write(struct davinci_i2c_dev *dev)
davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, w);
if (!dev->terminate)
- dev_err(dev->dev, "TDR IRQ while no data to send\n");
+ dev_dbg(dev->dev, "TDR IRQ while no data to send\n");
}
/*
@@ -473,9 +478,14 @@ static irqreturn_t i2c_davinci_isr(int this_irq, void *dev_id)
break;
case DAVINCI_I2C_IVR_AAS:
- dev_warn(dev->dev, "Address as slave interrupt\n");
- }/* switch */
- }/* while */
+ dev_dbg(dev->dev, "Address as slave interrupt\n");
+ break;
+
+ default:
+ dev_warn(dev->dev, "Unrecognized irq stat %d\n", stat);
+ break;
+ }
+ }
return count ? IRQ_HANDLED : IRQ_NONE;
}
@@ -505,7 +515,7 @@ static int davinci_i2c_probe(struct platform_device *pdev)
return -ENODEV;
}
- ioarea = request_mem_region(mem->start, (mem->end - mem->start) + 1,
+ ioarea = request_mem_region(mem->start, resource_size(mem),
pdev->name);
if (!ioarea) {
dev_err(&pdev->dev, "I2C region already claimed\n");
@@ -523,7 +533,7 @@ static int davinci_i2c_probe(struct platform_device *pdev)
dev->irq = irq->start;
platform_set_drvdata(pdev, dev);
- dev->clk = clk_get(&pdev->dev, "I2CCLK");
+ dev->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(dev->clk)) {
r = -ENODEV;
goto err_free_mem;
@@ -568,7 +578,7 @@ err_free_mem:
put_device(&pdev->dev);
kfree(dev);
err_release_region:
- release_mem_region(mem->start, (mem->end - mem->start) + 1);
+ release_mem_region(mem->start, resource_size(mem));
return r;
}
@@ -591,7 +601,7 @@ static int davinci_i2c_remove(struct platform_device *pdev)
kfree(dev);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(mem->start, (mem->end - mem->start) + 1);
+ release_mem_region(mem->start, resource_size(mem));
return 0;
}
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index ad8d2010c92..d258b02aef4 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -672,9 +672,10 @@ omap_i2c_isr(int this_irq, void *dev_id)
break;
}
+ err = 0;
+complete:
omap_i2c_write_reg(dev, OMAP_I2C_STAT_REG, stat);
- err = 0;
if (stat & OMAP_I2C_STAT_NACK) {
err |= OMAP_I2C_STAT_NACK;
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG,
@@ -685,16 +686,19 @@ omap_i2c_isr(int this_irq, void *dev_id)
err |= OMAP_I2C_STAT_AL;
}
if (stat & (OMAP_I2C_STAT_ARDY | OMAP_I2C_STAT_NACK |
- OMAP_I2C_STAT_AL))
+ OMAP_I2C_STAT_AL)) {
omap_i2c_complete_cmd(dev, err);
+ return IRQ_HANDLED;
+ }
if (stat & (OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR)) {
u8 num_bytes = 1;
if (dev->fifo_size) {
if (stat & OMAP_I2C_STAT_RRDY)
num_bytes = dev->fifo_size;
- else
- num_bytes = omap_i2c_read_reg(dev,
- OMAP_I2C_BUFSTAT_REG);
+ else /* read RXSTAT on RDR interrupt */
+ num_bytes = (omap_i2c_read_reg(dev,
+ OMAP_I2C_BUFSTAT_REG)
+ >> 8) & 0x3F;
}
while (num_bytes) {
num_bytes--;
@@ -731,9 +735,10 @@ omap_i2c_isr(int this_irq, void *dev_id)
if (dev->fifo_size) {
if (stat & OMAP_I2C_STAT_XRDY)
num_bytes = dev->fifo_size;
- else
+ else /* read TXSTAT on XDR interrupt */
num_bytes = omap_i2c_read_reg(dev,
- OMAP_I2C_BUFSTAT_REG);
+ OMAP_I2C_BUFSTAT_REG)
+ & 0x3F;
}
while (num_bytes) {
num_bytes--;
@@ -760,6 +765,27 @@ omap_i2c_isr(int this_irq, void *dev_id)
"data to send\n");
break;
}
+
+ /*
+ * OMAP3430 Errata 1.153: When an XRDY/XDR
+ * is hit, wait for XUDF before writing data
+ * to DATA_REG. Otherwise some data bytes can
+ * be lost while transferring them from the
+ * memory to the I2C interface.
+ */
+
+ if (cpu_is_omap34xx()) {
+ while (!(stat & OMAP_I2C_STAT_XUDF)) {
+ if (stat & (OMAP_I2C_STAT_NACK | OMAP_I2C_STAT_AL)) {
+ omap_i2c_ack_stat(dev, stat & (OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR));
+ err |= OMAP_I2C_STAT_XUDF;
+ goto complete;
+ }
+ cpu_relax();
+ stat = omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG);
+ }
+ }
+
omap_i2c_write_reg(dev, OMAP_I2C_DATA_REG, w);
}
omap_i2c_ack_stat(dev,
@@ -806,7 +832,7 @@ omap_i2c_probe(struct platform_device *pdev)
return -ENODEV;
}
- ioarea = request_mem_region(mem->start, (mem->end - mem->start) + 1,
+ ioarea = request_mem_region(mem->start, resource_size(mem),
pdev->name);
if (!ioarea) {
dev_err(&pdev->dev, "I2C region already claimed\n");
@@ -879,7 +905,7 @@ omap_i2c_probe(struct platform_device *pdev)
i2c_set_adapdata(adap, dev);
adap->owner = THIS_MODULE;
adap->class = I2C_CLASS_HWMON;
- strncpy(adap->name, "OMAP I2C adapter", sizeof(adap->name));
+ strlcpy(adap->name, "OMAP I2C adapter", sizeof(adap->name));
adap->algo = &omap_i2c_algo;
adap->dev.parent = &pdev->dev;
@@ -905,7 +931,7 @@ err_free_mem:
platform_set_drvdata(pdev, NULL);
kfree(dev);
err_release_region:
- release_mem_region(mem->start, (mem->end - mem->start) + 1);
+ release_mem_region(mem->start, resource_size(mem));
return r;
}
@@ -925,7 +951,7 @@ omap_i2c_remove(struct platform_device *pdev)
iounmap(dev->base);
kfree(dev);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(mem->start, (mem->end - mem->start) + 1);
+ release_mem_region(mem->start, resource_size(mem));
return 0;
}
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 8f42a4536cd..20bb0ceb027 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -763,11 +763,6 @@ static int s3c24xx_i2c_init(struct s3c24xx_i2c *i2c)
dev_info(i2c->dev, "bus frequency set to %d KHz\n", freq);
dev_dbg(i2c->dev, "S3C2410_IICCON=0x%02lx\n", iicon);
- /* check for s3c2440 i2c controller */
-
- if (s3c24xx_i2c_is2440(i2c))
- writel(0x0, i2c->regs + S3C2440_IICLC);
-
return 0;
}
diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index 1c01083b01b..820487d0d5c 100644
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -563,7 +563,7 @@ static int sh_mobile_i2c_probe(struct platform_device *dev)
goto err_irq;
}
- size = (res->end - res->start) + 1;
+ size = resource_size(res);
pd->reg = ioremap(res->start, size);
if (pd->reg == NULL) {
@@ -637,7 +637,7 @@ static void __exit sh_mobile_i2c_adap_exit(void)
platform_driver_unregister(&sh_mobile_i2c_driver);
}
-module_init(sh_mobile_i2c_adap_init);
+subsys_initcall(sh_mobile_i2c_adap_init);
module_exit(sh_mobile_i2c_adap_exit);
MODULE_DESCRIPTION("SuperH Mobile I2C Bus Controller driver");
diff --git a/drivers/i2c/busses/i2c-simtec.c b/drivers/i2c/busses/i2c-simtec.c
index 042fda295f3..6407f47bda8 100644
--- a/drivers/i2c/busses/i2c-simtec.c
+++ b/drivers/i2c/busses/i2c-simtec.c
@@ -92,7 +92,7 @@ static int simtec_i2c_probe(struct platform_device *dev)
goto err;
}
- size = (res->end-res->start)+1;
+ size = resource_size(res);
pd->ioarea = request_mem_region(res->start, size, dev->name);
if (pd->ioarea == NULL) {
diff --git a/drivers/i2c/chips/tsl2550.c b/drivers/i2c/chips/tsl2550.c
index 1a9cc135219..b96f3025e58 100644
--- a/drivers/i2c/chips/tsl2550.c
+++ b/drivers/i2c/chips/tsl2550.c
@@ -27,7 +27,7 @@
#include <linux/delay.h>
#define TSL2550_DRV_NAME "tsl2550"
-#define DRIVER_VERSION "1.1.1"
+#define DRIVER_VERSION "1.1.2"
/*
* Defines
@@ -189,13 +189,16 @@ static int tsl2550_calculate_lux(u8 ch0, u8 ch1)
u8 r = 128;
/* Avoid division by 0 and count 1 cannot be greater than count 0 */
- if (c0 && (c1 <= c0))
- r = c1 * 128 / c0;
+ if (c1 <= c0)
+ if (c0) {
+ r = c1 * 128 / c0;
+
+ /* Calculate LUX */
+ lux = ((c0 - c1) * ratio_lut[r]) / 256;
+ } else
+ lux = 0;
else
- return -1;
-
- /* Calculate LUX */
- lux = ((c0 - c1) * ratio_lut[r]) / 256;
+ return -EAGAIN;
/* LUX range check */
return lux > TSL2550_MAX_LUX ? TSL2550_MAX_LUX : lux;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 23:59:40 +0000