diff options
| author | Ajay Singh <ajay.kathat@microchip.com> | 2021-09-16 19:49:21 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2021-09-21 18:08:17 +0300 |
| commit | 29f7393e02aceab1ae7fad75c76c3717b5196bf8 (patch) | |
| tree | 983135879bd89fa1fcaed17a9b41c8bcd988c007 /drivers/net/wireless/microchip | |
| parent | aa3fda4fcf63b717e195ca92537da05db55e01a6 (diff) | |
| download | linux-29f7393e02aceab1ae7fad75c76c3717b5196bf8.tar.xz | |
wilc1000: invoke chip reset register before firmware download
Add the chip reset command to initialize the WILC chip before downloading
the firmware. Also, put the chip in wake-up mode so it is ready to receive
the firmware binary from the host.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210916164902.74629-9-ajay.kathat@microchip.com
Diffstat (limited to 'drivers/net/wireless/microchip')
| -rw-r--r-- | drivers/net/wireless/microchip/wilc1000/wlan.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/net/wireless/microchip/wilc1000/wlan.c b/drivers/net/wireless/microchip/wilc1000/wlan.c index f9256c1bad45..de5287cd8652 100644 --- a/drivers/net/wireless/microchip/wilc1000/wlan.c +++ b/drivers/net/wireless/microchip/wilc1000/wlan.c @@ -1080,6 +1080,7 @@ int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer, u32 addr, size, size2, blksz; u8 *dma_buffer; int ret = 0; + u32 reg = 0; blksz = BIT(12); @@ -1088,10 +1089,22 @@ int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer, return -EIO; offset = 0; + pr_debug("%s: Downloading firmware size = %d\n", __func__, buffer_size); + + acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); + + wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®); + reg &= ~BIT(10); + ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg); + wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®); + if (reg & BIT(10)) + pr_err("%s: Failed to reset\n", __func__); + + release_bus(wilc, WILC_BUS_RELEASE_ONLY); do { addr = get_unaligned_le32(&buffer[offset]); size = get_unaligned_le32(&buffer[offset + 4]); - acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY); + acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP); offset += 8; while (((int)size) && (offset < buffer_size)) { if (size <= blksz) @@ -1109,10 +1122,13 @@ int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer, offset += size2; size -= size2; } - release_bus(wilc, WILC_BUS_RELEASE_ONLY); + release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP); - if (ret) + if (ret) { + pr_err("%s Bus error\n", __func__); goto fail; + } + pr_debug("%s Offset = %d\n", __func__, offset); } while (offset < buffer_size); fail: |