pwrdm_disable_hdwr_sar(9)

💅 pwrdm_disable_hdwr_sar(9) 💅

okay bestie, welcome to the Kernel API Manual glow-up for pwrdm_disable_hdwr_sar(9). this is the page where we turn off automatic hardware SAR for a powerdomain, and yes we’re keeping every detail because facts are the main character too ✨

🌸 NAME 🌸

pwrdm_disable_hdwr_sar — disable automatic hardware SAR for a pwrdm 💅

✨ SYNOPSIS ✨

int pwrdm_disable_hdwr_sar (struct powerdomain *pwrdm );

🎀 ARGUMENTS 🎀

• pwrdm — a struct powerdomain *. that’s the powerdomain bestie we’re talking about 🫶

🦋 DESCRIPTION 🦋

okay so this one disables automatic context save-and-restore upon power state change for some devices in the powerdomain pwrdm. literally only some devices, though.

⚠️ warning, bestie: this only affects a subset of devices in a powerdomain. check the TRM closely — no cap, don’t skip that part. 👀

Return vibes: it returns -EINVAL if the powerdomain pointer is null, or if the powerdomain does not support automatic save-and-restore. on success it returns 0. periodt. 💖

🌈 SEE ALSO 🌈

Kernel file ./arch/arm/mach-omap2/powerdomain.c and the whole friend group:

• _pwrdm_register(9)
• _pwrdm_save_clkdm_state_and_activate(9)
• _pwrdm_restore_clkdm_state(9)
• pwrdm_register_platform_funcs(9)
• pwrdm_register_pwrdms(9)
• pwrdm_complete_init(9)
• pwrdm_lock(9)
• pwrdm_unlock(9)
• pwrdm_lookup(9)
• pwrdm_for_each(9)
• pwrdm_add_clkdm(9)
• pwrdm_get_mem_bank_count(9)
• pwrdm_set_next_pwrst(9)
• pwrdm_read_next_pwrst(9)
• pwrdm_read_pwrst(9)
• pwrdm_read_prev_pwrst(9)
• pwrdm_set_logic_retst(9)
• pwrdm_set_mem_onst(9)
• pwrdm_set_mem_retst(9)
• pwrdm_read_logic_pwrst(9)
• pwrdm_read_prev_logic_pwrst(9)
• pwrdm_read_logic_retst(9)
• pwrdm_read_mem_pwrst(9)
• pwrdm_read_prev_mem_pwrst(9)
• pwrdm_read_mem_retst(9)
• pwrdm_clear_all_prev_pwrst(9)
• pwrdm_enable_hdwr_sar(9)
• pwrdm_has_hdwr_sar(9)
• pwrdm_get_valid_lp_state(9)
• omap_set_pwrdm_state(9)
• pwrdm_save_context(9)
• pwrdm_restore_context(9)

and that’s the whole page, bestie! brought to you by the ./arch/arm/mach-omap2 source vibe and dated October 2026 — mwah 💋💖