kernel/git/stable/linux.git/drivers/spi, branch linux-4.19.y

spi: Fix acpi deferred irq probe

2024-12-05T09:59:39+00:00

commit d24cfee7f63d6b44d45a67c5662bd1cc48e8b3ca upstream. When probing spi device take care of deferred probe of ACPI irq gpio similar like for OF/DT case. >From practical standpoint this fixes issue with vsc-tp driver on Dell XP 9340 laptop, which try to request interrupt with spi->irq equal to -EPROBE_DEFER and fail to probe with the following error: vsc-tp spi-INTC10D0:00: probe with driver vsc-tp failed with error -22 Suggested-by: Hans de Goede Fixes: 33ada67da352 ("ACPI / spi: attach GPIO IRQ from ACPI description to SPI device") Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka Reviewed-by: Hans de Goede Tested-by: Alexis Lothoré # Dell XPS9320, ov01a10 Link: https://patch.msgid.link/20241122094224.226773-1-stanislaw.gruszka@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

spi: bcm63xx: Fix module autoloading

2024-11-08T15:19:13+00:00

commit 909f34f2462a99bf876f64c5c61c653213e32fce upstream. Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based on the alias from platform_device_id table. Fixes: 44d8fb30941d ("spi/bcm63xx: move register definitions into the driver") Cc: stable@vger.kernel.org Signed-off-by: Jinjie Ruan Reviewed-by: Jonas Gorski Link: https://patch.msgid.link/20240819123349.4020472-2-ruanjinjie@huawei.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

spi: s3c64xx: fix timeout counters in flush_fifo

2024-11-08T15:19:13+00:00

[ Upstream commit 68a16708d2503b6303d67abd43801e2ca40c208d ] In the s3c64xx_flush_fifo() code, the loops counter is post-decremented in the do { } while(test && loops--) condition. This means the loops is left at the unsigned equivalent of -1 if the loop times out. The test after will never pass as if tests for loops == 0. Signed-off-by: Ben Dooks Fixes: 230d42d422e7 ("spi: Add s3c64xx SPI Controller driver") Reviewed-by: Andi Shyti Link: https://patch.msgid.link/20240924134009.116247-2-ben.dooks@codethink.co.uk Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

spi: ppc4xx: Avoid returning 0 when failed to parse and map IRQ

2024-11-08T15:19:04+00:00

[ Upstream commit 7781f1d120fec8624fc654eda900fc8748262082 ] 0 is incorrect error code when failed to parse and map IRQ. Replace OF specific old API for IRQ retrieval with a generic one to fix this issue. Fixes: 0f245463b01e ("spi: ppc4xx: handle irq_of_parse_and_map() errors") Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20240814144525.2648450-1-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

spi: ppc4xx: handle irq_of_parse_and_map() errors

2024-11-08T15:19:04+00:00

[ Upstream commit 0f245463b01ea254ae90e1d0389e90b0e7d8dc75 ] Zero and negative number is not a valid IRQ for in-kernel code and the irq_of_parse_and_map() function returns zero on error. So this check for valid IRQs should only accept values > 0. Fixes: 44dab88e7cc9 ("spi: add spi_ppc4xx driver") Signed-off-by: Ma Ke Link: https://patch.msgid.link/20240724084047.1506084-1-make24@iscas.ac.cn Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

spi: bcm63xx: Enable module autoloading

2024-11-08T15:19:03+00:00

[ Upstream commit 709df70a20e990d262c473ad9899314039e8ec82 ] Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based on the alias from of_device_id table. Signed-off-by: Liao Chen Link: https://patch.msgid.link/20240831094231.795024-1-liaochen4@huawei.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

spi: spi-fsl-lpspi: Fix scldiv calculation

2024-08-19T03:32:15+00:00

[ Upstream commit 730bbfaf7d4890bd99e637db7767dc68cfeb24e7 ] The effective SPI clock frequency should never exceed speed_hz otherwise this might result in undefined behavior of the SPI device. Currently the scldiv calculation could violate this constraint. For the example parameters perclk_rate = 24 MHz and speed_hz = 7 MHz, the function fsl_lpspi_set_bitrate will determine perscale = 0 and scldiv = 1, which is a effective SPI clock of 8 MHz. So fix this by rounding up the quotient of perclk_rate and speed_hz. While this never change within the loop, we can pull this out. Fixes: 5314987de5e5 ("spi: imx: add lpspi bus driver") Signed-off-by: Stefan Wahren Link: https://patch.msgid.link/20240804113611.83613-1-wahrenst@gmx.net Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

spi: fsl-lpspi: remove unneeded array

2024-08-19T03:32:14+00:00

[ Upstream commit 2fa98705a9289c758b6154a22174aa8d4041a285 ] - replace the array with the shift operation - remove the extra comparing operation. Signed-off-by: Oleksandr Suvorov Link: https://lore.kernel.org/r/20200220141143.3902922-2-oleksandr.suvorov@toradex.com Signed-off-by: Mark Brown Stable-dep-of: 730bbfaf7d48 ("spi: spi-fsl-lpspi: Fix scldiv calculation") Signed-off-by: Sasha Levin

spi: lpspi: add the error info of transfer speed setting

2024-08-19T03:32:14+00:00

[ Upstream commit 77736a98b859e2c64aebbd0f90b2ce4b17682396 ] Add a error info when set a speed which greater than half of per-clk of spi module. The minimum SCK period is 2 cycles(CCR[SCKDIV]). So the maximum transfer speed is half of spi per-clk. Signed-off-by: Clark Wang Signed-off-by: Mark Brown Stable-dep-of: 730bbfaf7d48 ("spi: spi-fsl-lpspi: Fix scldiv calculation") Signed-off-by: Sasha Levin

spi: lpspi: Add i.MX8 boards support for lpspi

2024-08-19T03:32:14+00:00

[ Upstream commit f5e5afdb0e56e81123e02b6a64dd32adc19a90d4 ] Add both ipg and per clock for lpspi to support i.MX8QM/QXP boards. Signed-off-by: Clark Wang Signed-off-by: Mark Brown Stable-dep-of: 730bbfaf7d48 ("spi: spi-fsl-lpspi: Fix scldiv calculation") Signed-off-by: Sasha Levin