Hi all,
Today's linux-next merge of the arm-soc tree got a conflict in
drivers/i2c/busses/i2c-nomadik.c between commit af97bace2cca
("i2c-nomadik: move header to <linux/platform_data/i2c-nomadik.h>") from
the i2c-embedded tree and commits 32e42c687e0a ("ARM: ux500: Remove
unused i2c platform_data initialisation code") and 8214fd238a66 ("i2c:
Add Device Tree support to the Nomadik I2C driver") from the arm-soc tree.
I fixed it up (I think - see below) and can carry the fix as necessary.
Please check this and talk to each other ...
--
Cheers,
Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
diff --cc drivers/i2c/busses/i2c-nomadik.c
index e6b93f3,5471303..0000000
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@@ -24,8 -23,10 +24,9 @@@
#include <linux/io.h>
#include <linux/regulator/consumer.h>
#include <linux/pm_runtime.h>
+#include <linux/platform_data/i2c-nomadik.h>
+ #include <linux/of.h>
-#include <plat/i2c.h>
-
#define DRIVER_NAME "nmk-i2c"
/* I2C Controller register offsets */
@@@ -911,23 -896,93 +908,94 @@@ static const struct i2c_algorithm nmk_i
.functionality = nmk_i2c_functionality
};
+ static struct nmk_i2c_controller u8500_i2c = {
+ /*
+ * Slave data setup time; 250ns, 100ns, and 10ns, which
+ * is 14, 6 and 2 respectively for a 48Mhz i2c clock.
+ */
+ .slsu = 0xe,
+ .tft = 1, /* Tx FIFO threshold */
+ .rft = 8, /* Rx FIFO threshold */
+ .clk_freq = 400000, /* std. mode operation */
+ .timeout = 200, /* Slave response timeout(ms) */
+ .sm = I2C_FREQ_MODE_FAST,
+ };
+
+ static int __devinit
+ nmk_i2c_of_probe(struct device_node *np, struct nmk_i2c_controller *pdata)
+ {
+ of_property_read_u32(np, "clock-frequency", (u32*)&pdata->clk_freq);
+ if (!pdata->clk_freq) {
+ pr_warn("%s: Clock frequency not found\n", np->full_name);
+ return -EINVAL;
+ }
+
+ of_property_read_u32(np, "stericsson,slsu", (u32*)&pdata->slsu);
+ if (!pdata->slsu) {
+ pr_warn("%s: Data line delay not found\n", np->full_name);
+ return -EINVAL;
+ }
+
+ of_property_read_u32(np, "stericsson,tft", (u32*)&pdata->tft);
+ if (!pdata->tft) {
+ pr_warn("%s: Tx FIFO threshold not found\n", np->full_name);
+ return -EINVAL;
+ }
+
+ of_property_read_u32(np, "stericsson,rft", (u32*)&pdata->rft);
+ if (!pdata->rft) {
+ pr_warn("%s: Rx FIFO threshold not found\n", np->full_name);
+ return -EINVAL;
+ }
+
+ of_property_read_u32(np, "stericsson,timeout", (u32*)&pdata->timeout);
+ if (!pdata->timeout) {
+ pr_warn("%s: Timeout not found\n", np->full_name);
+ return -EINVAL;
+ }
+
+ /*
+ * This driver only supports fast and standard frequency
+ * modes. If anything else is requested fall-back to standard.
+ */
+ if (of_get_property(np, "stericsson,i2c_freq_mode_fast", NULL))
+ pdata->sm = I2C_FREQ_MODE_FAST;
+ else
+ pdata->sm = I2C_FREQ_MODE_STANDARD;
+
+ return 0;
+ }
+
-static int __devinit nmk_i2c_probe(struct platform_device *pdev)
+static atomic_t adapter_id = ATOMIC_INIT(0);
+
+static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id)
{
int ret = 0;
- struct nmk_i2c_controller *pdata =
- adev->dev.platform_data;
- struct resource *res;
- struct nmk_i2c_controller *pdata = pdev->dev.platform_data;
- struct device_node *np = pdev->dev.of_node;
++ struct nmk_i2c_controller *pdata = adev->dev.platform_data;
++ struct device_node *np = adev->dev.of_node;
struct nmk_i2c_dev *dev;
struct i2c_adapter *adap;
- if (!pdata) {
- dev_warn(&adev->dev, "no platform data\n");
- return -ENODEV;
+ if (np) {
+ if (!pdata) {
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
++ pdata = devm_kzalloc(&adev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ ret = -ENOMEM;
+ goto err_no_mem;
+ }
+ }
+ ret = nmk_i2c_of_probe(np, pdata);
+ if (ret)
+ kfree(pdata);
}
+
+ if (!pdata)
+ /* No i2c configuration found, using the default. */
+ pdata = &u8500_i2c;
+
dev = kzalloc(sizeof(struct nmk_i2c_dev), GFP_KERNEL);
if (!dev) {
- dev_err(&pdev->dev, "cannot allocate memory\n");
+ dev_err(&adev->dev, "cannot allocate memory\n");
ret = -ENOMEM;
goto err_no_mem;
}
@@@ -969,12 -1037,12 +1037,11 @@@
adap->owner = THIS_MODULE;
adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
adap->algo = &nmk_i2c_algo;
- adap->timeout = pdata->timeout ? msecs_to_jiffies(pdata->timeout) :
- msecs_to_jiffies(20000);
+ adap->timeout = msecs_to_jiffies(pdata->timeout);
+ adap->nr = atomic_read(&adapter_id);
snprintf(adap->name, sizeof(adap->name),
- "Nomadik I2C%d at %lx", pdev->id, (unsigned long)res->start);
-
- /* fetch the controller id */
- adap->nr = pdev->id;
+ "Nomadik I2C%d at %pR", adap->nr, &adev->res);
+ atomic_inc(&adapter_id);
/* fetch the controller configuration from machine */
dev->cfg.clk_freq = pdata->clk_freq;
@@@ -1040,29 -1110,20 +1107,35 @@@ static int nmk_i2c_remove(struct amba_d
return 0;
}
+static struct amba_id nmk_i2c_ids[] = {
+ {
+ .id = 0x00180024,
+ .mask = 0x00ffffff,
+ },
+ {
+ .id = 0x00380024,
+ .mask = 0x00ffffff,
+ },
+ {},
+};
+
+MODULE_DEVICE_TABLE(amba, nmk_i2c_ids);
+
+ static const struct of_device_id nmk_gpio_match[] = {
+ { .compatible = "st,nomadik-i2c", },
+ {},
+ };
+
-static struct platform_driver nmk_i2c_driver = {
- .driver = {
+static struct amba_driver nmk_i2c_driver = {
+ .drv = {
.owner = THIS_MODULE,
.name = DRIVER_NAME,
.pm = &nmk_i2c_pm,
+ .of_match_table = nmk_gpio_match,
},
+ .id_table = nmk_i2c_ids,
.probe = nmk_i2c_probe,
- .remove = __devexit_p(nmk_i2c_remove),
+ .remove = nmk_i2c_remove,
};
static int __init nmk_i2c_init(void)
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