diff options
| author | Tero Kristo <t-kristo@ti.com> | 2023-08-02 12:19:25 +0530 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2023-08-21 15:19:28 -0600 |
| commit | 18cf4fcd7bdc1864e75127f4fd15abc0bc76ec7f (patch) | |
| tree | da18b5a4bedc25d48fe0a9ef3b277a0af0621337 /drivers | |
| parent | fb2bdd32b231b70e6a3f1054528692f604db25d8 (diff) | |
remoteproc: pru: add support for configuring GPMUX based on client setup
The GPMUX config value for a PRU device can now be configured by client
by specifying it in the device node ti,pruss-gp-mux-sel.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Link: https://lore.kernel.org/r/20230802064925.1895750-1-danishanwar@ti.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/remoteproc/pru_rproc.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index 5b2dc75836fc..327f0c7ee3d6 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -110,6 +110,7 @@ struct pru_private_data { * @dbg_single_step: debug state variable to set PRU into single step mode * @dbg_continuous: debug state variable to restore PRU execution mode * @evt_count: number of mapped events + * @gpmux_save: saved value for gpmux config */ struct pru_rproc { int id; @@ -128,6 +129,7 @@ struct pru_rproc { u32 dbg_single_step; u32 dbg_continuous; u8 evt_count; + u8 gpmux_save; }; static inline u32 pru_control_read_reg(struct pru_rproc *pru, unsigned int reg) @@ -229,6 +231,7 @@ struct rproc *pru_rproc_get(struct device_node *np, int index, struct device *dev; const char *fw_name; int ret; + u32 mux; rproc = __pru_rproc_get(np, index); if (IS_ERR(rproc)) @@ -253,6 +256,23 @@ struct rproc *pru_rproc_get(struct device_node *np, int index, if (pru_id) *pru_id = pru->id; + ret = pruss_cfg_get_gpmux(pru->pruss, pru->id, &pru->gpmux_save); + if (ret) { + dev_err(dev, "failed to get cfg gpmux: %d\n", ret); + goto err; + } + + /* An error here is acceptable for backward compatibility */ + ret = of_property_read_u32_index(np, "ti,pruss-gp-mux-sel", index, + &mux); + if (!ret) { + ret = pruss_cfg_set_gpmux(pru->pruss, pru->id, mux); + if (ret) { + dev_err(dev, "failed to set cfg gpmux: %d\n", ret); + goto err; + } + } + ret = of_property_read_string_index(np, "firmware-name", index, &fw_name); if (!ret) { @@ -291,6 +311,8 @@ void pru_rproc_put(struct rproc *rproc) pru = rproc->priv; + pruss_cfg_set_gpmux(pru->pruss, pru->id, pru->gpmux_save); + pru_rproc_set_firmware(rproc, NULL); mutex_lock(&pru->lock); |