On Fri, Jun 21, 2013 at 4:37 AM, Sekhar Nori <nsekhar@xxxxxx> wrote: > 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. Will do. I thought there was just 1 other disagreement. Neverthless I will make it a point to reply upfront next time. > 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. Ok, this really sucks. Somehow I missed the new checkpatch error. Thanks for fixing it & Sorry. Joel > 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-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- 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
