diff options
| -rw-r--r-- | drivers/memory/ti-aemif.c | 58 | ||||
| -rw-r--r-- | include/linux/platform_data/ti-aemif.h | 25 |
2 files changed, 63 insertions, 20 deletions
diff --git a/drivers/memory/ti-aemif.c b/drivers/memory/ti-aemif.c index 588e58d40d1b..31112f622b88 100644 --- a/drivers/memory/ti-aemif.c +++ b/drivers/memory/ti-aemif.c @@ -339,9 +339,6 @@ static int aemif_probe(struct platform_device *pdev) struct aemif_platform_data *pdata; struct of_dev_auxdata *dev_lookup; - if (np == NULL) - return 0; - aemif = devm_kzalloc(dev, sizeof(*aemif), GFP_KERNEL); if (!aemif) return -ENOMEM; @@ -363,8 +360,10 @@ static int aemif_probe(struct platform_device *pdev) aemif->clk_rate = clk_get_rate(aemif->clk) / MSEC_PER_SEC; - if (of_device_is_compatible(np, "ti,da850-aemif")) + if (np && of_device_is_compatible(np, "ti,da850-aemif")) aemif->cs_offset = 2; + else if (pdata) + aemif->cs_offset = pdata->cs_offset; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); aemif->base = devm_ioremap_resource(dev, res); @@ -373,15 +372,23 @@ static int aemif_probe(struct platform_device *pdev) goto error; } - /* - * For every controller device node, there is a cs device node that - * describe the bus configuration parameters. This functions iterate - * over these nodes and update the cs data array. - */ - for_each_available_child_of_node(np, child_np) { - ret = of_aemif_parse_abus_config(pdev, child_np); - if (ret < 0) - goto error; + if (np) { + /* + * For every controller device node, there is a cs device node + * that describe the bus configuration parameters. This + * functions iterate over these nodes and update the cs data + * array. + */ + for_each_available_child_of_node(np, child_np) { + ret = of_aemif_parse_abus_config(pdev, child_np); + if (ret < 0) + goto error; + } + } else if (pdata && pdata->num_abus_data > 0) { + for (i = 0; i < pdata->num_abus_data; i++, aemif->num_cs++) { + aemif->cs_data[i].cs = pdata->abus_data[i].cs; + aemif_get_hw_params(pdev, i); + } } for (i = 0; i < aemif->num_cs; i++) { @@ -394,14 +401,25 @@ static int aemif_probe(struct platform_device *pdev) } /* - * Create a child devices explicitly from here to - * guarantee that the child will be probed after the AEMIF timing - * parameters are set. + * Create a child devices explicitly from here to guarantee that the + * child will be probed after the AEMIF timing parameters are set. */ - for_each_available_child_of_node(np, child_np) { - ret = of_platform_populate(child_np, NULL, dev_lookup, dev); - if (ret < 0) - goto error; + if (np) { + for_each_available_child_of_node(np, child_np) { + ret = of_platform_populate(child_np, NULL, + dev_lookup, dev); + if (ret < 0) + goto error; + } + } else { + for (i = 0; i < pdata->num_sub_devices; i++) { + pdata->sub_devices[i].dev.parent = dev; + ret = platform_device_register(&pdata->sub_devices[i]); + if (ret) { + dev_warn(dev, "Error register sub device %s\n", + pdata->sub_devices[i].name); + } + } } return 0; diff --git a/include/linux/platform_data/ti-aemif.h b/include/linux/platform_data/ti-aemif.h index ac72e115093c..e6407bafcbf8 100644 --- a/include/linux/platform_data/ti-aemif.h +++ b/include/linux/platform_data/ti-aemif.h @@ -16,8 +16,33 @@ #include <linux/of_platform.h> +/** + * struct aemif_abus_data - Async bus configuration parameters. + * + * @cs - Chip-select number. + */ +struct aemif_abus_data { + u32 cs; +}; + +/** + * struct aemif_platform_data - Data to set up the TI aemif driver. + * + * @dev_lookup: of_dev_auxdata passed to of_platform_populate() for aemif + * subdevices. + * @cs_offset: Lowest allowed chip-select number. + * @abus_data: Array of async bus configuration entries. + * @num_abus_data: Number of abus entries. + * @sub_devices: Array of platform subdevices. + * @num_sub_devices: Number of subdevices. + */ struct aemif_platform_data { struct of_dev_auxdata *dev_lookup; + u32 cs_offset; + struct aemif_abus_data *abus_data; + size_t num_abus_data; + struct platform_device *sub_devices; + size_t num_sub_devices; }; #endif /* __TI_DAVINCI_AEMIF_DATA_H__ */ |