From afea21c9174e555defd55f488df2a99117457b4e Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Wed, 1 Jun 2016 17:39:26 +0900 Subject: drm/nouveau/clk/gk20a: factorize n_lo computation code Use a dedicated function instead of always calculating n_lo on the fly. Signed-off-by: Alexandre Courbot Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/clk') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c index a95eda7c5df4..cc46e3abac97 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c @@ -160,6 +160,13 @@ gk20a_pllg_calc_rate(struct gk20a_clk *clk, struct gk20a_pll *pll) return rate / divider / 2; } +static u32 +gk20a_pllg_n_lo(struct gk20a_clk *clk, struct gk20a_pll *pll) +{ + return DIV_ROUND_UP(pll->m * clk->params->min_vco, + clk->parent_rate / KHZ); +} + static int gk20a_pllg_calc_mnp(struct gk20a_clk *clk, unsigned long rate, struct gk20a_pll *pll) @@ -341,7 +348,6 @@ _gk20a_pllg_program_mnp(struct gk20a_clk *clk, struct gk20a_pll *pll, struct nvkm_device *device = subdev->device; u32 val, cfg; struct gk20a_pll old_pll; - u32 n_lo; /* get old coefficients */ gk20a_pllg_read_mnp(clk, &old_pll); @@ -357,10 +363,7 @@ _gk20a_pllg_program_mnp(struct gk20a_clk *clk, struct gk20a_pll *pll, if (allow_slide && (cfg & GPCPLL_CFG_ENABLE)) { int ret; - n_lo = DIV_ROUND_UP(old_pll.m * clk->params->min_vco, - clk->parent_rate / KHZ); - ret = gk20a_pllg_slide(clk, n_lo); - + ret = gk20a_pllg_slide(clk, gk20a_pllg_n_lo(clk, &old_pll)); if (ret) return ret; } @@ -391,8 +394,7 @@ _gk20a_pllg_program_mnp(struct gk20a_clk *clk, struct gk20a_pll *pll, old_pll = *pll; if (allow_slide) - old_pll.n = DIV_ROUND_UP(pll->m * clk->params->min_vco, - clk->parent_rate / KHZ); + old_pll.n = gk20a_pllg_n_lo(clk, pll); gk20a_pllg_write_mnp(clk, &old_pll); gk20a_pllg_enable(clk); @@ -628,8 +630,7 @@ gk20a_clk_fini(struct nvkm_clk *base) u32 n_lo; gk20a_pllg_read_mnp(clk, &pll); - n_lo = DIV_ROUND_UP(pll.m * clk->params->min_vco, - clk->parent_rate / KHZ); + n_lo = gk20a_pllg_n_lo(clk, &pll); gk20a_pllg_slide(clk, n_lo); } -- cgit v1.2.3