From 9c2367538de381435503425c22c4f192c72e282e Mon Sep 17 00:00:00 2001 From: Damien Lespiau Date: Thu, 7 May 2015 18:38:41 +0100 Subject: [PATCH] drm/i915/skl: Use a more idomatic early return We can coalesce the WARN() condition with the WARN() itself and, as we are returning early, we can de-intent the rest of the function. Signed-off-by: Damien Lespiau Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_ddi.c | 121 +++++++++++++++---------------- 1 file changed, 59 insertions(+), 62 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index f10f55690749..c547f03904bc 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1193,76 +1193,73 @@ found: } } - if (min_dco_index > 2) { - WARN(1, "No valid parameters found for pixel clock: %dHz\n", - clock); + if (WARN(min_dco_index > 2, + "No valid parameters found for pixel clock: %dHz\n", clock)) return false; - } else { - wrpll_params->central_freq = dco_central_freq[min_dco_index]; - switch (dco_central_freq[min_dco_index]) { - case 9600000000ULL: - wrpll_params->central_freq = 0; - break; - case 9000000000ULL: - wrpll_params->central_freq = 1; - break; - case 8400000000ULL: - wrpll_params->central_freq = 3; - } + wrpll_params->central_freq = dco_central_freq[min_dco_index]; - switch (candidate_p0[min_dco_index]) { - case 1: - wrpll_params->pdiv = 0; - break; - case 2: - wrpll_params->pdiv = 1; - break; - case 3: - wrpll_params->pdiv = 2; - break; - case 7: - wrpll_params->pdiv = 4; - break; - default: - WARN(1, "Incorrect PDiv\n"); - } + switch (dco_central_freq[min_dco_index]) { + case 9600000000ULL: + wrpll_params->central_freq = 0; + break; + case 9000000000ULL: + wrpll_params->central_freq = 1; + break; + case 8400000000ULL: + wrpll_params->central_freq = 3; + } - switch (candidate_p2[min_dco_index]) { - case 5: - wrpll_params->kdiv = 0; - break; - case 2: - wrpll_params->kdiv = 1; - break; - case 3: - wrpll_params->kdiv = 2; - break; - case 1: - wrpll_params->kdiv = 3; - break; - default: - WARN(1, "Incorrect KDiv\n"); - } + switch (candidate_p0[min_dco_index]) { + case 1: + wrpll_params->pdiv = 0; + break; + case 2: + wrpll_params->pdiv = 1; + break; + case 3: + wrpll_params->pdiv = 2; + break; + case 7: + wrpll_params->pdiv = 4; + break; + default: + WARN(1, "Incorrect PDiv\n"); + } - wrpll_params->qdiv_ratio = candidate_p1[min_dco_index]; - wrpll_params->qdiv_mode = - (wrpll_params->qdiv_ratio == 1) ? 0 : 1; + switch (candidate_p2[min_dco_index]) { + case 5: + wrpll_params->kdiv = 0; + break; + case 2: + wrpll_params->kdiv = 1; + break; + case 3: + wrpll_params->kdiv = 2; + break; + case 1: + wrpll_params->kdiv = 3; + break; + default: + WARN(1, "Incorrect KDiv\n"); + } - dco_freq = candidate_p0[min_dco_index] * - candidate_p1[min_dco_index] * - candidate_p2[min_dco_index] * afe_clock; + wrpll_params->qdiv_ratio = candidate_p1[min_dco_index]; + wrpll_params->qdiv_mode = + (wrpll_params->qdiv_ratio == 1) ? 0 : 1; - /* - * Intermediate values are in Hz. - * Divide by MHz to match bsepc - */ - wrpll_params->dco_integer = div_u64(dco_freq, (24 * MHz(1))); - wrpll_params->dco_fraction = - div_u64(((div_u64(dco_freq, 24) - - wrpll_params->dco_integer * MHz(1)) * 0x8000), MHz(1)); + dco_freq = candidate_p0[min_dco_index] * + candidate_p1[min_dco_index] * + candidate_p2[min_dco_index] * afe_clock; - } + /* + * Intermediate values are in Hz. + * Divide by MHz to match bsepc + */ + wrpll_params->dco_integer = div_u64(dco_freq, (24 * MHz(1))); + wrpll_params->dco_fraction = + div_u64(((div_u64(dco_freq, 24) - + wrpll_params->dco_integer * MHz(1)) * 0x8000), MHz(1)); return true; } -- 2.20.1