The driver misses including <linux/io.h>, which causes a compilation
error with x86_64 'allmodconfig':
drivers/perf/amlogic/meson_g12_ddr_pmu.c: In function 'dmc_g12_get_freq_quick':
drivers/perf/amlogic/meson_g12_ddr_pmu.c:135:15: error: implicit declaration of function 'readl' [-Werror=implicit-function-declaration]
135 | val = readl(info->pll_reg);
| ^~~~~
drivers/perf/amlogic/meson_g12_ddr_pmu.c: In function 'dmc_g12_counter_enable':
drivers/perf/amlogic/meson_g12_ddr_pmu.c:204:9: error: implicit declaration of function 'writel' [-Werror=implicit-function-declaration]
204 | writel(clock_count, info->ddr_reg[0] + DMC_MON_G12_TIMER);
| ^~~~~~
Add the missing header to fix the build.
Fixes: 2016e2113d ("perf/amlogic: Add support for Amlogic meson G12 SoC DDR PMU driver")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jiucheng Xu <jiucheng.xu@amlogic.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20221122084028.572494-1-jiucheng.xu@amlogic.com
Signed-off-by: Will Deacon <will@kernel.org>
Add support for Amlogic Meson G12 Series SOC - DDR bandwidth PMU driver
framework and interfaces. The PMU can not only monitor the total DDR
bandwidth, but also individual IP module bandwidth.
Signed-off-by: Jiucheng Xu <jiucheng.xu@amlogic.com>
Tested-by: Chris Healy <healych@amazon.com>
Link: https://lore.kernel.org/r/20221121021602.3306998-1-jiucheng.xu@amlogic.com
Signed-off-by: Will Deacon <will@kernel.org>