Joel, Looks like you have not addressed all comments from last time. For now, in the interest of time, I have fixed them myself. But next time on, if you are not going to fix any comment, then please reply upfront before sending out *any* new versions. Also, *please* run checkpatch and fix all build warnings before you send the patch out. You seem to have introduced new checkpatch errors and compile warnings with this version. On 6/21/2013 2:36 AM, Joel A Fernandes wrote: > From: Matt Porter <mporter@xxxxxx> > > Adds support for parsing the TI EDMA DT data into the required EDMA > private API platform data. Enables runtime PM support to initialize > the EDMA hwmod. Enables build on OMAP. > > Changes by Joel: > * Setup default one-to-one mapping for queue_priority and queue_tc > mapping as discussed in [1]. > * Split out xbar stuff to separate patch. [1] > * Dropped unused DT helper to convert to array > > [1] https://patchwork.kernel.org/patch/2226761/ > > Signed-off-by: Matt Porter <mporter@xxxxxx> > Acked-by: Sekhar Nori <nsekhar@xxxxxx> > Signed-off-by: Joel A Fernandes <joelagnel@xxxxxx> > --- > arch/arm/common/edma.c | 180 +++++++++++++++++++++++++++++++++--- > include/linux/platform_data/edma.h | 4 +- > 2 files changed, 169 insertions(+), 15 deletions(-) > > diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c > index 7658874..407e01e 100644 > --- a/arch/arm/common/edma.c > +++ b/arch/arm/common/edma.c > @@ -25,6 +25,13 @@ > #include <linux/platform_device.h> > #include <linux/io.h> > #include <linux/slab.h> > +#include <linux/edma.h> > +#include <linux/err.h> > +#include <linux/of_address.h> > +#include <linux/of_device.h> > +#include <linux/of_dma.h> > +#include <linux/of_irq.h> > +#include <linux/pm_runtime.h> > > #include <linux/platform_data/edma.h> > > @@ -1369,13 +1376,102 @@ void edma_clear_event(unsigned channel) > } > EXPORT_SYMBOL(edma_clear_event); > > -/*-----------------------------------------------------------------------*/ > +static int edma_of_read_u32_to_s16_array(const struct device_node *np, > + const char *propname, s16 *out_values, > + size_t sz) > +{ > + int ret; > + > + ret = of_property_read_u16_array(np, propname, out_values, sz); > + if (ret) > + return ret; > + > + /* Terminate it */ > + *out_values++ = -1; > + *out_values++ = -1; > + > + return 0; > +} I asked you to get rid of unused functions last time around. This function is unused here. > + > +static int edma_of_parse_dt(struct device *dev, > + struct device_node *node, > + struct edma_soc_info *pdata) > +{ > + int ret = 0, i; > + u32 value; > + struct property *prop; > + size_t sz; sz and prop are not used in this function and result in unused variable warnings. > + struct edma_rsv_info *rsv_info; > + s8 (*queue_tc_map)[2], (*queue_priority_map)[2]; > + > + memset(pdata, 0, sizeof(struct edma_soc_info)); > + > + ret = of_property_read_u32(node, "dma-channels", &value); > + if (ret < 0) > + return ret; > + pdata->n_channel = value; > + > + ret = of_property_read_u32(node, "ti,edma-regions", &value); > + if (ret < 0) > + return ret; > + pdata->n_region = value; > + > + ret = of_property_read_u32(node, "ti,edma-slots", &value); > + if (ret < 0) > + return ret; > + pdata->n_slot = value; > + > + pdata->n_cc = 1; > + pdata->n_tc = 3; n_tc setting is not used in driver as I mentioned last time. I dropped this line. > + > + rsv_info = > + devm_kzalloc(dev, sizeof(struct edma_rsv_info), GFP_KERNEL); > + if (!rsv_info) > + return -ENOMEM; > + pdata->rsv = rsv_info; > + > + queue_tc_map = devm_kzalloc(dev, 8*sizeof(s8), GFP_KERNEL); > + if (!queue_tc_map) > + return -ENOMEM; > + > + for (i = 0; i < 3; i++) { > + queue_tc_map[i][0] = i; > + queue_tc_map[i][1] = i; > + } > + queue_tc_map[i][0] = -1; > + queue_tc_map[i][1] = -1; > + > + pdata->queue_tc_mapping = queue_tc_map; > + > + queue_priority_map = devm_kzalloc(dev, 8*sizeof(s8), GFP_KERNEL); > + if (!queue_priority_map) > + return -ENOMEM; > + > + for (i = 0; i < 3; i++) { > + queue_priority_map[i][0] = i; > + queue_priority_map[i][1] = i; > + } > + queue_priority_map[i][0] = -1; > + queue_priority_map[i][1] = -1; > + > + pdata->queue_priority_mapping = queue_priority_map; > + > + pdata->default_queue = 0; > + > + return ret; > +} > + > +static struct of_dma_filter_info edma_filter_info = { > + .filter_fn = edma_filter_fn, > +}; > > -static int __init edma_probe(struct platform_device *pdev) > +static int edma_probe(struct platform_device *pdev) > { > struct edma_soc_info **info = pdev->dev.platform_data; > - const s8 (*queue_priority_mapping)[2]; > - const s8 (*queue_tc_mapping)[2]; > + struct edma_soc_info *ninfo[EDMA_MAX_CC] = {NULL}; > + struct edma_soc_info tmpinfo; > + s8 (*queue_priority_mapping)[2]; > + s8 (*queue_tc_mapping)[2]; > int i, j, off, ln, found = 0; > int status = -1; > const s16 (*rsv_chans)[2]; > @@ -1383,17 +1479,56 @@ static int __init edma_probe(struct platform_device *pdev) > int irq[EDMA_MAX_CC] = {0, 0}; > int err_irq[EDMA_MAX_CC] = {0, 0}; > struct resource *r[EDMA_MAX_CC] = {NULL}; > + struct resource res[EDMA_MAX_CC]; > char res_name[10]; > char irq_name[10]; > + struct device_node *node = pdev->dev.of_node; > + struct device *dev = &pdev->dev; > + int ret; > + > + if (node) { > + /* Check if this is a second instance registered */ > + if (arch_num_cc) { > + dev_err(dev, "only one EDMA instance is supported via DT\n"); > + return -ENODEV; > + } > + info = ninfo; > + edma_of_parse_dt(dev, node, &tmpinfo); As I mentioned last time, this potentially leaks memory since you need to return error for the memory allocated through devres APIs to get freed. > + info[0] = &tmpinfo; > + > + dma_cap_set(DMA_SLAVE, edma_filter_info.dma_cap); > + of_dma_controller_register(dev->of_node, > + of_dma_simple_xlate, > + &edma_filter_info); It turns out this patch fails to build if CONFIG_DMADEVICES is not enabled. I fixed that in my version. And no, forcing DMADEVICES to be on all the time is not right. More on that later. > + } > > if (!info) > return -ENODEV; > > + pm_runtime_enable(dev); > + ret = pm_runtime_get_sync(dev); > + if (ret < 0) { > + dev_err(dev, "pm_runtime_get_sync() failed\n"); > + return ret; > + } > + > for (j = 0; j < EDMA_MAX_CC; j++) { > - sprintf(res_name, "edma_cc%d", j); > - r[j] = platform_get_resource_byname(pdev, IORESOURCE_MEM, > + if (!info[j]) { > + if (!found) > + return -ENODEV; > + break; > + } > + if (node) { > + ret = of_address_to_resource(node, j, &res[j]); > + if (!ret) > + r[j] = &res[j]; > + } else { > + sprintf(res_name, "edma_cc%d", j); > + r[j] = platform_get_resource_byname(pdev, > + IORESOURCE_MEM, > res_name); > - if (!r[j] || !info[j]) { > + } > + if (!r[j]) { > if (found) > break; > else > @@ -1440,7 +1575,7 @@ static int __init edma_probe(struct platform_device *pdev) > off = rsv_chans[i][0]; > ln = rsv_chans[i][1]; > clear_bits(off, ln, > - edma_cc[j]->edma_unused); > + edma_cc[j]->edma_unused); > } > } > > @@ -1456,8 +1591,14 @@ static int __init edma_probe(struct platform_device *pdev) > } > } > > - sprintf(irq_name, "edma%d", j); > - irq[j] = platform_get_irq_byname(pdev, irq_name); > + > + if (node) { > + irq[j] = irq_of_parse_and_map(node, 0); > + } > + else { > + sprintf(irq_name, "edma%d", j); > + irq[j] = platform_get_irq_byname(pdev, irq_name); > + } You ended up introducing checkpatch error here.. > edma_cc[j]->irq_res_start = irq[j]; > status = devm_request_irq(&pdev->dev, irq[j], > dma_irq_handler, 0, "edma", > @@ -1469,8 +1610,13 @@ static int __init edma_probe(struct platform_device *pdev) > return status; > } > > - sprintf(irq_name, "edma%d_err", j); > - err_irq[j] = platform_get_irq_byname(pdev, irq_name); > + if (node) { > + err_irq[j] = irq_of_parse_and_map(node, 2); > + } > + else { > + sprintf(irq_name, "edma%d_err", j); > + err_irq[j] = platform_get_irq_byname(pdev, irq_name); > + } .. and here. > edma_cc[j]->irq_res_end = err_irq[j]; > status = devm_request_irq(&pdev->dev, err_irq[j], > dma_ccerr_handler, 0, > @@ -1516,9 +1662,17 @@ static int __init edma_probe(struct platform_device *pdev) > return 0; > } > > +static const struct of_device_id edma_of_ids[] = { > + { .compatible = "ti,edma3", }, > + {} > +}; > > static struct platform_driver edma_driver = { > - .driver.name = "edma", > + .driver = { > + .name = "edma", > + .of_match_table = edma_of_ids, > + }, > + .probe = edma_probe, > }; > > static int __init edma_init(void) > diff --git a/include/linux/platform_data/edma.h b/include/linux/platform_data/edma.h > index 2344ea2..317f2be 100644 > --- a/include/linux/platform_data/edma.h > +++ b/include/linux/platform_data/edma.h > @@ -175,8 +175,8 @@ struct edma_soc_info { > /* Resource reservation for other cores */ > struct edma_rsv_info *rsv; > > - const s8 (*queue_tc_mapping)[2]; > - const s8 (*queue_priority_mapping)[2]; > + s8 (*queue_tc_mapping)[2]; > + s8 (*queue_priority_mapping)[2]; So the warnings/errors introduced in this patch must be fixed in this patch only. I merged your 07/11 into this. But that does not solve all the problems since you ignored non-DA8XX platforms. I fixed those. Also, Arnd acked the whole series so I added his ack to this. I have tested the updated on non-DT DM644x board. That means a large part of the patch is actually untested. Can you please test it and let me know it works? I will sent the patch as a reply to this mail. Thanks, Sekhar -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
