kernel/linux.git/drivers/memory/tegra/mc.c, branch v5.15.7

memory: tegra: Implement SID override programming

2021-06-03T19:50:43+00:00

Instead of programming all SID overrides during early boot, perform the operation on-demand after the SMMU translations have been set up for a device. This reuses data from device tree to match memory clients for a device and programs the SID specified in device tree, which corresponds to the SID used for the SMMU context banks for the device. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210603164632.1000458-2-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Unify drivers

2021-06-03T19:49:41+00:00

The Tegra210 (and earlier) driver now supports all the functionality that the Tegra186 (and later) driver does, so they can be unified. Note that previously the Tegra186 (and later) driver could be unloaded, even if that was perhaps not very useful. Older chips don't support that yet, but once they do this code can be reenabled. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-11-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Only initialize reset controller if available

2021-06-03T19:49:41+00:00

The memory controller hot resets are implemented in the BPMP on Tegra186 and later, so there's no need to provide an implementation via the memory controller driver. Conditionally register the reset controller only if needed. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-10-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Make IRQ support opitonal

2021-06-03T19:49:41+00:00

Make IRQ support optional to help unify the Tegra186 memory controller driver with this one. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-9-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Parameterize interrupt handler

2021-06-03T19:49:41+00:00

Tegra20 requires a slightly different interrupt handler than Tegra30 and later, so parameterize the handler, so that each SoC implementation can provide its own. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-8-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Extract setup code into callback

2021-06-03T19:49:41+00:00

Separate the setup code for Tegra30 and later into a ->setup() callback and set it for all applicable chips. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-7-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Make per-SoC setup more generic

2021-06-03T19:49:41+00:00

The current per-SoC setup code runs at a fairly arbitrary point during probe, thereby making it less flexible for other SoC generations. Move the call around slightly (after only the very basic, common setup that applies to all SoC generations has been performed), which will allow it to be used for other implementations. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-6-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Push suspend/resume into SoC drivers

2021-06-03T19:49:41+00:00

Continuing the scheme of unification, push suspend/resume callbacks into per-SoC driver so that they can be properly parameterized. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-5-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Introduce struct tegra_mc_ops

2021-06-03T19:49:40+00:00

Subsequent patches will introduce further callbacks, so create a new struct tegra_mc_ops to collect all of them in a single place. Move the existing ->init() callback into the new structure. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-4-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Consolidate register fields

2021-06-03T19:49:40+00:00

Subsequent patches will add more register fields to the tegra_mc_client structure, so consolidate all register field definitions into a common sub-structure for coherency. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-2-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski