clk: ti: Add functions to save/restore clk context commit d6e7bbc148f9fbec8a0117b0d0f420c9710e6d81 upstream SoCs like AM43XX lose clock registers context during RTC-only suspend. Hence add functions to save/restore the clock registers context. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Russ Dill <Russ.Dill@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Tero Kristo <t-kristo@ti.com>
clk: ti: Drop legacy clk-3xxx-legacy code We have now had omap3 booting in device tree only mode for a while and all this code is unused. Acked-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
clk: ti: convert to use proper register definition for all accesses Currently, TI clock driver uses an encapsulated struct that is cast into a void pointer to store all register addresses. This can be considered as rather nasty hackery, and prevents from expanding the register address field also. Instead, replace all the code to use proper struct in place for this, which contains all the previously used data. This patch is rather large as it is touching multiple files, but this can't be split up as we need to avoid any boot breakage. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com>
clk: ti: gate: export gate_clk_ops locally These are going to be used by the clkctrl support that will be introduced later. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com>
clk: ti: divider: convert TI divider clock to use its own data representation Instead of using the generic clock driver data struct, use one internal for the TI clock driver itself. This allows modifying the register access parts in subsequent patch. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com>
clk: ti: drop unnecessary MEMMAP_ADDRESSING flag This has been superceded by the usage of ti_clk_ll_ops for now. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com>
clk: ti: use automatic clock alias generation framework Generate clock aliases automatically for all TI clock drivers. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com>
clk: move the common clock's to_clk_*(_hw) macros to clk-provider.h to_clk_*(_hw) macros have been repeatedly defined in many places. This patch moves all the to_clk_*(_hw) definitions in the common clock framework to public header clk-provider.h, and drop the local definitions. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
clk: ti: Convert to clk_hw based provider APIs We're removing struct clk from the clk provider API, so switch this code to using the clk_hw based provider APIs. Acked-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
clk: ti: fix ti_clk_get_reg_addr error handling There is a case where NULL can be a valid return value for ti_clk_get_reg_addr, specifically the case where both the provider index and register offsets are zero. In this case, the current error checking against a NULL pointer will fail. Thus, change the API to return a ERR_PTR value in an error case, and change all the users of this API to check against IS_ERR instead. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Michael Turquette <mturquette@linaro.org>
clk: omap: compile legacy omap3 clocks conditionally The 'ARM: OMAP3: legacy clock data move under clk driver' patch series causes build errors when CONFIG_OMAP3 is not set: drivers/clk/ti/dpll.c: In function 'ti_clk_register_dpll': drivers/clk/ti/dpll.c:199:31: error: 'omap3_dpll_ck_ops' undeclared (first use in this function) const struct clk_ops *ops = &omap3_dpll_ck_ops; ^ drivers/clk/ti/dpll.c:199:31: note: each undeclared identifier is reported only once for each function it appears in drivers/clk/ti/dpll.c:259:10: error: 'omap3_dpll_per_ck_ops' undeclared (first use in this function) ops = &omap3_dpll_per_ck_ops; ^ drivers/built-in.o: In function `ti_clk_register_gate': drivers/clk/ti/gate.c:179: undefined reference to `clkhwops_omap3430es2_dss_usbhost_wait' drivers/clk/ti/gate.c:179: undefined reference to `clkhwops_am35xx_ipss_module_wait' -in.o: In function `ti_clk_register_interface': drivers/clk/ti/interface.c:100: undefined reference to `clkhwops_omap3430es2_iclk_hsotgusb_wait' drivers/clk/ti/interface.c:100: undefined reference to `clkhwops_omap3430es2_iclk_dss_usbhost_wait' drivers/clk/ti/interface.c:100: undefined reference to `clkhwops_omap3430es2_iclk_ssi_wait' drivers/clk/ti/interface.c:100: undefined reference to `clkhwops_am35xx_ipss_wait' drivers/built-in.o: In function `ti_clk_register_composite': :(.text+0x3da768): undefined reference to `ti_clk_build_component_gate' In order to fix that problem, this patch makes the omap3 legacy code compiled only when both CONFIG_OMAP3 and CONFIG_ATAGS are set. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Michael Turquette <mturquette@linaro.org>
clk: ti: interface: add support for legacy interface clock init Legacy clock data is initialized slightly differently compared to DT clocks, thus add support for this. The interface clock descriptor itself is overloading the gate clock descriptor, thus it needs to be called from the gate setup. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Michael Turquette <mturquette@linaro.org>
clk: ti: gate: add support for legacy gate init Legacy clock data is initialialized slightly differently compared to DT clocks, thus add support for this. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Michael Turquette <mturquette@linaro.org>
Merge branch 'for-v3.16/ti-clk-drv' of github.com:t-kristo/linux-pm into clk-next
CLK: TI: gate: add composite interface clock to OMAP2 only build Composite interface clock is needed by OMAP2, but it was only built in for OMAP3. Fixed the conditional build flag checks for this. Signed-off-by: Tero Kristo <t-kristo@ti.com>
clk: ti: add missing semi-colon on CLK_OF_DECLARE With common OF_DECLARE macros, a semi-colon will be required for CLK_OF_DECLARE. Add the missing semi-colon to ti,gate-clock. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Mike Turquette <mturquette@linaro.org>
CLK: TI: add support for gate clock This patch adds support for TI specific gate clocks. These behave as basic gate-clock, but have different ops / hw-ops for controlling the actual gate, for example waiting until the clock is ready. Several sub-types are supported: - ti,gate-clock: basic gate clock with default ops/hwops - ti,clkdm-gate-clock: clockdomain level gate control - ti,dss-gate-clock: gate clock with DSS specific hardware handling - ti,am35xx-gate-clock: gate clock with AM35xx specific hardware handling - ti,hsdiv-gate-clock: gate clock with OMAP36xx hardware errata handling Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>