diff options
| -rw-r--r-- | Documentation/arm/keystone/knav-qmss.txt | 26 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt | 1 | ||||
| -rw-r--r-- | drivers/soc/ti/knav_qmss.h | 1 | ||||
| -rw-r--r-- | drivers/soc/ti/knav_qmss_queue.c | 47 |
4 files changed, 54 insertions, 21 deletions
diff --git a/Documentation/arm/keystone/knav-qmss.txt b/Documentation/arm/keystone/knav-qmss.txt index 79946d184d76..da34a5babfbe 100644 --- a/Documentation/arm/keystone/knav-qmss.txt +++ b/Documentation/arm/keystone/knav-qmss.txt @@ -22,3 +22,29 @@ pool management. knav qmss driver provides a set of APIs to drivers to open/close qmss queues, allocate descriptor pools, map the descriptors, push/pop to queues etc. For details of the available APIs, please refers to include/linux/soc/ti/knav_qmss.h + +DT documentation is available at +Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt + +Accumulator QMSS queues using PDSP firmware +============================================ +The QMSS PDSP firmware support accumulator channel that can monitor a single +queue or multiple contiguous queues. drivers/soc/ti/knav_qmss_acc.c is the +driver that interface with the accumulator PDSP. This configures +accumulator channels defined in DTS (example in DT documentation) to monitor +1 or 32 queues per channel. More description on the firmware is available in +CPPI/QMSS Low Level Driver document (docs/CPPI_QMSS_LLD_SDS.pdf) at + git://git.ti.com/keystone-rtos/qmss-lld.git + +k2_qmss_pdsp_acc48_k2_le_1_0_0_9.bin firmware supports upto 48 accumulator +channels. This firmware is available under ti-keystone folder of +firmware.git at + git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git + +To use copy the firmware image to lib/firmware folder of the initramfs or +ubifs file system and provide a sym link to k2_qmss_pdsp_acc48_k2_le_1_0_0_9.bin +in the file system and boot up the kernel. User would see + + "firmware file ks2_qmss_pdsp_acc48.bin downloaded for PDSP" + +in the boot up log if loading of firmware to PDSP is successful. diff --git a/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt b/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt index d8e8cdb733f9..d1ce21a4904d 100644 --- a/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt +++ b/Documentation/devicetree/bindings/soc/ti/keystone-navigator-qmss.txt @@ -221,7 +221,6 @@ qmss: qmss@2a40000 { #size-cells = <1>; ranges; pdsp0@0x2a10000 { - firmware = "keystone/qmss_pdsp_acc48_k2_le_1_0_0_8.fw"; reg = <0x2a10000 0x1000>, <0x2a0f000 0x100>, <0x2a0c000 0x3c8>, diff --git a/drivers/soc/ti/knav_qmss.h b/drivers/soc/ti/knav_qmss.h index 51da2341280d..c31b8d826794 100644 --- a/drivers/soc/ti/knav_qmss.h +++ b/drivers/soc/ti/knav_qmss.h @@ -135,7 +135,6 @@ struct knav_pdsp_info { }; void __iomem *intd; u32 __iomem *iram; - const char *firmware; u32 id; struct list_head list; }; diff --git a/drivers/soc/ti/knav_qmss_queue.c b/drivers/soc/ti/knav_qmss_queue.c index 6d8646db52cc..06d9de826758 100644 --- a/drivers/soc/ti/knav_qmss_queue.c +++ b/drivers/soc/ti/knav_qmss_queue.c @@ -68,6 +68,12 @@ static DEFINE_MUTEX(knav_dev_lock); idx < (kdev)->num_queues_in_use; \ idx++, inst = knav_queue_idx_to_inst(kdev, idx)) +/* All firmware file names end up here. List the firmware file names below. + * Newest followed by older ones. Search is done from start of the array + * until a firmware file is found. + */ +const char *knav_acc_firmwares[] = {"ks2_qmss_pdsp_acc48.bin"}; + /** * knav_queue_notify: qmss queue notfier call * @@ -1439,7 +1445,6 @@ static int knav_queue_init_pdsps(struct knav_device *kdev, struct device *dev = kdev->dev; struct knav_pdsp_info *pdsp; struct device_node *child; - int ret; for_each_child_of_node(pdsps, child) { pdsp = devm_kzalloc(dev, sizeof(*pdsp), GFP_KERNEL); @@ -1448,17 +1453,6 @@ static int knav_queue_init_pdsps(struct knav_device *kdev, return -ENOMEM; } pdsp->name = knav_queue_find_name(child); - ret = of_property_read_string(child, "firmware", - &pdsp->firmware); - if (ret < 0 || !pdsp->firmware) { - dev_err(dev, "unknown firmware for pdsp %s\n", - pdsp->name); - devm_kfree(dev, pdsp); - continue; - } - dev_dbg(dev, "pdsp name %s fw name :%s\n", pdsp->name, - pdsp->firmware); - pdsp->iram = knav_queue_map_reg(kdev, child, KNAV_QUEUE_PDSP_IRAM_REG_INDEX); @@ -1489,9 +1483,9 @@ static int knav_queue_init_pdsps(struct knav_device *kdev, } of_property_read_u32(child, "id", &pdsp->id); list_add_tail(&pdsp->list, &kdev->pdsps); - dev_dbg(dev, "added pdsp %s: command %p, iram %p, regs %p, intd %p, firmware %s\n", + dev_dbg(dev, "added pdsp %s: command %p, iram %p, regs %p, intd %p\n", pdsp->name, pdsp->command, pdsp->iram, pdsp->regs, - pdsp->intd, pdsp->firmware); + pdsp->intd); } return 0; } @@ -1518,14 +1512,29 @@ static int knav_queue_load_pdsp(struct knav_device *kdev, { int i, ret, fwlen; const struct firmware *fw; + bool found = false; u32 *fwdata; - ret = request_firmware(&fw, pdsp->firmware, kdev->dev); - if (ret) { - dev_err(kdev->dev, "failed to get firmware %s for pdsp %s\n", - pdsp->firmware, pdsp->name); - return ret; + for (i = 0; i < ARRAY_SIZE(knav_acc_firmwares); i++) { + if (knav_acc_firmwares[i]) { + ret = request_firmware(&fw, + knav_acc_firmwares[i], + kdev->dev); + if (!ret) { + found = true; + break; + } + } + } + + if (!found) { + dev_err(kdev->dev, "failed to get firmware for pdsp\n"); + return -ENODEV; } + + dev_info(kdev->dev, "firmware file %s downloaded for PDSP\n", + knav_acc_firmwares[i]); + writel_relaxed(pdsp->id + 1, pdsp->command + 0x18); /* download the firmware */ fwdata = (u32 *)fw->data; |