XMMUpstreaming » History » Version 3
Denis 'GNUtoo' Carikli, 06/20/2020 01:53 AM
fix typo
| 1 | 1 | Denis 'GNUtoo' Carikli | h1. XMMUpstreaming |
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| 2 | |||
| 3 | {{toc}} |
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| 4 | |||
| 5 | h2. Analysis of Replicant 9 Linux 5.2 modem branch |
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| 6 | |||
| 7 | These were cleaned up and ported from forkbomb's code: |
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| 8 | <pre> |
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| 9 | b4c2df98ed6f misc: xmm6262: Add Samsung IPC USB modem firmware download module |
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| 10 | 77b55273bd6e net: usb: add Samsung IPC-over-HSIC driver |
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| 11 | f9ae2d1697fa net: add Samsung IPC interface driver |
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| 12 | 7806adad4507 HACK: usb: host: ehci-exynos: add ehci_power sysfs node |
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| 13 | 82c317b0da5e HACK: add modem power on/off driver |
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| 14 | 28e5b460f920 HACK: usb: ehci_exynos: enable OHCI_SUSP_LEGACY |
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| 15 | e7c122b770c1 ARM: dts: EXYNOS: add 3G modem nodes to midas boards |
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| 16 | c3201527f7ea ARM: dts: split Exynos 4412 N710x boards up |
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| 17 | 5b55f03cda8c ARM: dts: EXYNOS: add Samsung IPC modem support |
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| 18 | eca381876d5e ARM: dts: EXYNOS: enable HSIC0 on midas boards |
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| 19 | 7ec9129e3221 replicant_*_defconfig: extend cmdline to get IMSI and other information |
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| 20 | 54c196380507 replicant_*_defconfig: Add modem support |
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| 21 | [...] |
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| 22 | 0ecfebd2b524 Linux 5.2 |
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| 23 | </pre> |
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| 24 | |||
| 25 | If we look at the drivers only (not the dts or config changes, or hacks in pre-existing code, we are left with): |
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| 26 | <pre> |
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| 27 | b4c2df98ed6f misc: xmm6262: Add Samsung IPC USB modem firmware download module |
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| 28 | 77b55273bd6e net: usb: add Samsung IPC-over-HSIC driver |
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| 29 | f9ae2d1697fa net: add Samsung IPC interface driver |
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| 30 | 82c317b0da5e HACK: add modem power on/off driver |
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| 31 | </pre> |
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| 32 | |||
| 33 | We'd also need to find a way to fix these: |
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| 34 | <pre> |
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| 35 | 7806adad4507 HACK: usb: host: ehci-exynos: add ehci_power sysfs node |
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| 36 | 28e5b460f920 HACK: usb: ehci_exynos: enable OHCI_SUSP_LEGACY |
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| 37 | </pre> |
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| 38 | |||
| 39 | |||
| 40 | So we'd probably need to have something like that instead: |
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| 41 | 3 | Denis 'GNUtoo' Carikli | 1. A driver for the SIPC (Samsung IPC) protocol (f9ae2d1697fa net: add Samsung IPC interface driver) |
| 42 | 2. A driver for the SIPC (Samsung IPC) transport on top of HSIC and the protocol (77b55273bd6e net: usb: add Samsung IPC-over-HSIC driver). |
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| 43 | 1 | Denis 'GNUtoo' Carikli | 3. A modem driver with: |
| 44 | ** The GPIO handling like drivers/hsi/clients/nokia-modem.c (some GPIOs probably cannot be handled in userspace like gpio_pda_active (see [[XMMBoot#GPIOs-usage]] for more details) (82c317b0da5e HACK: add modem power on/off driver) |
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| 45 | ** The firmware loading code (b4c2df98ed6f misc: xmm6262: Add Samsung IPC USB modem firmware download module) |