diff options
Diffstat (limited to 'sound/soc/fsl/p1022_ds.c')
-rw-r--r-- | sound/soc/fsl/p1022_ds.c | 49 |
1 files changed, 36 insertions, 13 deletions
diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c index 2c064a9824a..a5d4e80a9cf 100644 --- a/sound/soc/fsl/p1022_ds.c +++ b/sound/soc/fsl/p1022_ds.c @@ -14,6 +14,7 @@ #include <linux/interrupt.h> #include <linux/of_device.h> #include <linux/slab.h> +#include <linux/of_i2c.h> #include <sound/soc.h> #include <asm/fsl_guts.h> @@ -252,8 +253,9 @@ static int get_parent_cell_index(struct device_node *np) static int codec_node_dev_name(struct device_node *np, char *buf, size_t len) { const u32 *iprop; - int bus, addr; + int addr; char temp[DAI_NAME_SIZE]; + struct i2c_client *i2c; of_modalias_node(np, temp, DAI_NAME_SIZE); @@ -263,11 +265,12 @@ static int codec_node_dev_name(struct device_node *np, char *buf, size_t len) addr = be32_to_cpup(iprop); - bus = get_parent_cell_index(np); - if (bus < 0) - return bus; + /* We need the adapter number */ + i2c = of_find_i2c_device_by_node(np); + if (!i2c) + return -ENODEV; - snprintf(buf, len, "%s.%u-%04x", temp, bus, addr); + snprintf(buf, len, "%s.%u-%04x", temp, i2c->adapter->nr, addr); return 0; } @@ -540,12 +543,6 @@ static struct platform_driver p1022_ds_driver = { .probe = p1022_ds_probe, .remove = __devexit_p(p1022_ds_remove), .driver = { - /* The name must match the 'model' property in the device tree, - * in lowercase letters, but only the part after that last - * comma. This is because some model properties have a "fsl," - * prefix. - */ - .name = "snd-soc-p1022", .owner = THIS_MODULE, }, }; @@ -559,13 +556,39 @@ static int __init p1022_ds_init(void) { struct device_node *guts_np; struct resource res; + const char *sprop; + + /* + * Check if we're actually running on a P1022DS. Older device trees + * have a model of "fsl,P1022" and newer ones use "fsl,P1022DS", so we + * need to support both. The SSI driver uses that property to link to + * the machine driver, so have to match it. + */ + sprop = of_get_property(of_find_node_by_path("/"), "model", NULL); + if (!sprop) { + pr_err("snd-soc-p1022ds: missing /model node"); + return -ENODEV; + } + + pr_debug("snd-soc-p1022ds: board model name is %s\n", sprop); - pr_info("Freescale P1022 DS ALSA SoC machine driver\n"); + /* + * The name of this board, taken from the device tree. Normally, this is a* + * fixed string, but some P1022DS device trees have a /model property of + * "fsl,P1022", and others have "fsl,P1022DS". + */ + if (strcasecmp(sprop, "fsl,p1022ds") == 0) + p1022_ds_driver.driver.name = "snd-soc-p1022ds"; + else if (strcasecmp(sprop, "fsl,p1022") == 0) + p1022_ds_driver.driver.name = "snd-soc-p1022"; + else + return -ENODEV; /* Get the physical address of the global utilities registers */ guts_np = of_find_compatible_node(NULL, NULL, "fsl,p1022-guts"); if (of_address_to_resource(guts_np, 0, &res)) { - pr_err("p1022-ds: missing/invalid global utilities node\n"); + pr_err("snd-soc-p1022ds: missing/invalid global utils node\n"); + of_node_put(guts_np); return -EINVAL; } guts_phys = res.start; |