diff options
| author | Herve Codina <herve.codina@bootlin.com> | 2024-08-08 10:11:28 +0300 |
|---|---|---|
| committer | Christophe Leroy <christophe.leroy@csgroup.eu> | 2024-09-03 08:49:21 +0300 |
| commit | 8655b76b7004d53bfa3c921ad9c4bf03dc952dc7 (patch) | |
| tree | 584c81b5fb50a95dfa73b010dc47e20229e399e9 /drivers/soc | |
| parent | eb680d563089e55b20cb7730ed881638fe4425b7 (diff) | |
| download | linux-8655b76b7004d53bfa3c921ad9c4bf03dc952dc7.tar.xz | |
soc: fsl: cpm1: qmc: Handle QUICC Engine (QE) soft-qmc firmware
The QUICC Engine (QE) QMC can use a firmware to have the QMC working in
'soft-qmc' mode.
Handle this optional 'soft-qmc' firmware.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20240808071132.149251-36-herve.codina@bootlin.com
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/fsl/qe/qmc.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c index b3a9534441ee..3dffebb48b0d 100644 --- a/drivers/soc/fsl/qe/qmc.c +++ b/drivers/soc/fsl/qe/qmc.c @@ -10,6 +10,7 @@ #include <soc/fsl/qe/qmc.h> #include <linux/bitfield.h> #include <linux/dma-mapping.h> +#include <linux/firmware.h> #include <linux/hdlc.h> #include <linux/interrupt.h> #include <linux/io.h> @@ -1649,6 +1650,66 @@ static irqreturn_t qmc_irq_handler(int irq, void *priv) return IRQ_HANDLED; } +static int qmc_qe_soft_qmc_init(struct qmc *qmc, struct device_node *np) +{ + struct qe_firmware_info *qe_fw_info; + const struct qe_firmware *qe_fw; + const struct firmware *fw; + const char *filename; + int ret; + + ret = of_property_read_string(np, "fsl,soft-qmc", &filename); + switch (ret) { + case 0: + break; + case -EINVAL: + /* fsl,soft-qmc property not set -> Simply do nothing */ + return 0; + default: + dev_err(qmc->dev, "%pOF: failed to read fsl,soft-qmc\n", + np); + return ret; + } + + qe_fw_info = qe_get_firmware_info(); + if (qe_fw_info) { + if (!strstr(qe_fw_info->id, "Soft-QMC")) { + dev_err(qmc->dev, "Another Firmware is already loaded\n"); + return -EALREADY; + } + dev_info(qmc->dev, "Firmware already loaded\n"); + return 0; + } + + dev_info(qmc->dev, "Using firmware %s\n", filename); + + ret = request_firmware(&fw, filename, qmc->dev); + if (ret) { + dev_err(qmc->dev, "Failed to request firmware %s\n", filename); + return ret; + } + + qe_fw = (const struct qe_firmware *)fw->data; + + if (fw->size < sizeof(qe_fw->header) || + be32_to_cpu(qe_fw->header.length) != fw->size) { + dev_err(qmc->dev, "Invalid firmware %s\n", filename); + ret = -EINVAL; + goto end; + } + + ret = qe_upload_firmware(qe_fw); + if (ret) { + dev_err(qmc->dev, "Failed to load firmware %s\n", filename); + goto end; + } + + ret = 0; +end: + release_firmware(fw); + return ret; +} + static int qmc_cpm1_init_resources(struct qmc *qmc, struct platform_device *pdev) { struct resource *res; @@ -1855,6 +1916,12 @@ static int qmc_probe(struct platform_device *pdev) if (ret) return ret; + if (qmc_is_qe(qmc)) { + ret = qmc_qe_soft_qmc_init(qmc, np); + if (ret) + return ret; + } + /* Parse channels informationss */ ret = qmc_of_parse_chans(qmc, np); if (ret) |